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s2000
Mar 08, 2007, 08:20 PM
Anyone put one of these together yet? Looks like a perfect model to go electric.

cooper998
Mar 08, 2007, 08:51 PM
I have the 40 size kit laying around here somewhere and when I saw the large arf I started drooling, but like you I am waiting til someone else convert ones before taking the plunge.

cooper998

P-51C
Mar 09, 2007, 09:03 AM
In looking at the manual, it gives instructions and setup for electric.

Coastwatcher
Mar 09, 2007, 09:18 AM
I've been eyeballing this one too, I think it is a really good canidate for electric flight. Too many to build as is, and I can't get parts to build the ones I have now ......which is frustrating the heck out of me !!

Fred

s2000
Mar 09, 2007, 09:30 AM
Anyone seen a better price than $279 at Tower? I have a feeling an RV-4 will be arriving at my house in the near future.

P-51C
May 24, 2007, 10:54 AM
So, has anyone actually done one of these in electric yet?

Looking at the weight, I am wondering if the recommended 6s setup is enough for decent performance.

I am wondering if the recommended motor gets anywhere the 1480 watts it is spec'd for. An Axi 4130-16 on 6s and a 17x8 e-prop gets around 1150.

mpope1
May 26, 2007, 12:29 AM
Looks like a good flap trainer.

sun.flyer
May 27, 2007, 11:19 PM
Looking at the weight, I am wondering if the recommended 6s setup is enough for decent performance.


Agreed!!

Tim

cooper998
Aug 06, 2007, 04:34 PM
So...
Anybody fly one electric yet? sure would like to know how she was setup.

cooper998

Michael in Toronto
Nov 02, 2007, 04:47 PM
I bought one and will fly it electric.

Build in Decemeber '07, fly in April '08.

modest-master
Nov 03, 2007, 09:51 AM
Here you go:
Good: AXI 4130/20, 15x10
Better: Hacker A50 14L, 16x10
Engine: .60-1.2
EVO FP5000 8S
82mm/3 1/4" spinner

http://www.espritmodel.com/index.asp?PageAction=VIEWPROD&ProdID=6292

Michael in Toronto
Dec 02, 2007, 03:38 PM
Wings all done - ailerons, flaps, servos, linkages, low and high rates, and exponential.

Stabilizer and fin installed. Main and tail landing gear installed.

Overall, a nice kit and good value.

I'm now thinking about how to install an E-Flite 60 motor: commercial motor mount or home-made plywood-box motor mount.

Michael in Toronto
Dec 04, 2007, 06:43 PM
Kept It Simple (Stupid).

KISS principle.

Bolts, nuts and spacers.

I also found an adapter to use the aluminum spinner with the E-Flite prop adapter.

Michael in Toronto
Dec 17, 2007, 09:05 AM
Speed control and all wiring installed.

This is a beautiful kit: exceptionally well built, superb cowl, sturdy landing gear, removable top, and expertly covered.

Michael in Toronto
Dec 23, 2007, 09:22 PM
Rudder and elevator servos and linkages installed. I used 2 servos for the elevator, 1 for each half, and heavy-duty push-rod connectors.

1/4 scale pilot, dash and canopy installed.

This is a very straight forward, well engineered kit. The fact that the fuselage-top comes off makes this perfect for changing / charging batteries.

I'm really taking my time; I want to drag this out as long as I can.

Cowl installation is next.

Michael in Toronto
Dec 27, 2007, 07:51 AM
All done.

Simplest big electric I've ever assembled.

The only custom work done was to cut an air-flow exit hole. Everything else, including all electric installation, was covered in the instructions.

I'll find this thread in spring and post flight pictures.

Michael in Toronto
Apr 06, 2008, 12:05 PM
Maiden flight today.

Took of nicely, and once trimmed, flew great. Very smooth, and capable of flying on very little power. Did rolls and slow, low passes.

It glides very well, and I needed flaps to get it down for the first landing.

Makes a great electric.

tommyeflight89
Apr 06, 2008, 01:36 PM
Would I be nuts to consider this as an electric float conversion?
See, I have a 1500w electric setup that needs a home (HXT motor and 8s4200mah pack.. more than enough power).
Over the summer I plan to build a scale warbird for it, but while I wait I might aswell put it to some use.

Lets see some pics! This is a good looking airplane...

Michael in Toronto
Apr 06, 2008, 01:43 PM
This ARF is really NOT a conversion kit; it is built for glow or gas or electric.

The plane flies easily on 6 cells; an 8 cell system should be plenty.

Someone else took in-flight photos. I'm waiting for an email.

Michael in Toronto
Apr 06, 2008, 05:24 PM
Photo

guyaneze
Apr 20, 2008, 11:34 PM
hi michael, what was your final setup?
I'm interested in details such as esc, prop, batteries and servos used.
we've got one sitting in the lhs.....
if i use a power 60 i think i can use an 80amp phoenix i have....any info on how many amps your setup pulls?

mpope1
May 06, 2008, 10:08 AM
Just started building this Arf, won it in a raffle. Looks real nice. Was wondering what servos some of you were using?

Michael in Toronto
May 06, 2008, 01:03 PM
I'm using an E-Flite 60 with an 85 amp speed control and 6S-5000mah, 15/8 prop. This plane will fly with any system that flies any of the 60-size Hangar 9 warbirds.

I don't know how many amps are being drawn, but it flies really well at less than full throttle.

I'm using standard servos throughout.

mpope1
May 07, 2008, 12:37 AM
I mounted a a60-16m, probably a little to much power for this plane. I will try 8s with a 20x10 prop and see what kind of numbers I get. I already had the motor, just waiting on the esc. Hopefully its not to nose heavy.

Michael in Toronto
May 07, 2008, 07:47 AM
... 8s with a 20x10 prop ...

Wow! It'll probably fly very well at 1/3 throttle.

mpope1
May 09, 2008, 07:58 PM
Still waiting on the esc, but everything else is done. Came out a little nose heavy with the a60 motor, gonna try to move the receiver pack as far back as possilble.

mpope1
May 10, 2008, 05:01 PM
Got my esc, ran up some numbers on the hacker a60-16m. On 10s prodigies(10c) 48 amps, 1500 watts with a 20x10e apc prop. One weird thing that I am noticing is when I spool up the motor real quick it seems to squeal and loose power, almost like its missing. I have had this happen with my cc 85's usually when I am over propping with a high cell count. Anybody ever experience this, is it a timing issue?

Yardbee
May 10, 2008, 05:49 PM
Hello: Sounds Like a Timing Issue!I Read Where Hacker Motors Optimum Performance Timed @ 2-5 Degrees @ a Frequency of 8 KHZ: Hope This Helps! After Seeing Your RV-4 I Couldn't Resist It!! Place My Order Today. Planning On Using a AXI 4130-16:

Good Luck: Joe

mpope1
May 19, 2008, 03:00 PM
Got to maiden my rv-4 this morning. This plane flies rock solid, no trim needed. Full flaps with 11% down elevator has the plane slowing down and settling nice on the mains for landings. A60-16m on 10s with a 18x12e apc prop about 1500 watts on my 10c prodigies, about 2500 watts on my xps 20c batt. No need for 2500 watts plane flies very scale with 1500 watts.

BingWing
Jun 05, 2008, 01:19 AM
Hi Guys - I have an RV-8 that I wanted to model but am really not a builder. I thought this would be a good choice to make it look like my full size aircraft. I fly electric ( large scale to park flyers ) and have asked GPs if I can order one uncovered. I plan to power it with a hacker motor and 6cells. Would it be easy enough to repaint the cowl / wheels pants etc ? Here is a picture of my full scale version ( an 8 not a 4 )

Thanks in advance

mpope1
Jun 06, 2008, 09:35 AM
You should have no problem painting the parts to match yours. Nice looking plane!

Eplane65
Jun 07, 2008, 11:42 AM
Got my esc, ran up some numbers on the hacker a60-16m. On 10s prodigies(10c) 48 amps, 1500 watts with a 20x10e apc prop. One weird thing that I am noticing is when I spool up the motor real quick it seems to squeal and loose power, almost like its missing. I have had this happen with my cc 85's usually when I am over propping with a high cell count. Anybody ever experience this, is it a timing issue?

I had a Hacker outrunner that squeeled like that. On take off, the motor froze up and ripped itself off the front of the airplane. Needless to say, the airplane trashed itself. Your motor may have a bad bearing or too much axial play. Hackers may be designed in Germany, but they are manufactured in China.

BingWing
Jun 09, 2008, 07:56 PM
I have used Hackers in 4 planes and can say first hand I find them about the best brushless outthere. Perhaps your set up was wrong as I have never heard of that happening before

Eplane65
Jun 09, 2008, 09:33 PM
The motor was definitely defective. Hacker replaced it under the warranty. It had excessive axial play in the bearings. You can't set it up wrong. In my opinion, AXI motors are far better than Hackers.

BingWing
Jun 09, 2008, 09:41 PM
Well what I meant is as you said it ripped itself of the motor mount which could indicate incorrect setup of your motor mount asemberly. I have not tried Axi motors yet but am about to build a Donuts Models Nexus with the tiny brushless Axi so keen to find out how they run.

mpope1
Jun 09, 2008, 10:53 PM
I changed the timing on the esc and that cured the squeal. I agree hacker motors are excellent motors, and can take a beating.

Michael in Toronto
Aug 16, 2008, 09:42 AM
Still a terrific looking and flying plane.

Mine (an electric) won Contest Director's Choice Award at a recent Funfly here in Canada. I was surprised, especially considering that ARF's don't usually win such prizes.

mpope1
Aug 17, 2008, 03:20 PM
I got lucky and won mine in a raffle at a giant scale fly in. This plane is a lot of fun to fly and flaps really add to fun.

caesar95
Dec 04, 2008, 04:43 PM
Hi,
I'm surprised there isn't much discussion on this nice kit (for E-powered, of course!)
I wonder what flight time I would get with a E-flite 60 + 6S-5000mah (or similar).
Also, can anyone give comments on a choice among E-flite 60, AXI 4130, and RimFire 50-65-450 (suggested by GP) for this RV-4?
Thanks!

BingWing
Dec 04, 2008, 05:29 PM
Yes, i too am interested as have my kit ready to start building and plan on using an e-flite 60 i think... would be interested to hear other epowered success stories ?

Smash McCrash
Dec 04, 2008, 06:20 PM
I have been looking at this for a while. I have also become a convert to Zippy-H battery packs. I have a couple of 6S 4000's that I am going to run a Power 60 on. I can collect the data with the prop that I have on it (APC 16×8) and post the numbers. I have run the battery up on another .60 sized plane and the battery numbers look good. 50A at 21+ V for 1200 W. Should be more than enough for the RV. I believe that the Power 60 should pull just about the same numbers. Definitely interested in the build and conversion discussions.

Mike

Michael in Toronto
Dec 04, 2008, 06:32 PM
I wonder what flight time I would get with a E-flite 60 + 6S-5000mah (or similar).


I usually get 2 x 6 minute flights on a full charge, and usually have 1,000 or more mah left in the pack.

I rarely fly more than 3/4 throttle, because the plane won't accelerate beyond that (the fuselage and wing are fat).

mpope1
Dec 10, 2008, 12:13 AM
I get about 8-10 min. per flight. I have a hacker a60-m in mine. Spins a 18x12e apc prop. I get close to 2000 watts, plane flies great at 1/2 throtte. I use xps 5000 packs(2-5s) for a 10s set up. I think a eflight 60 would work fine.

caesar95
Dec 10, 2008, 09:36 AM
Thanks for the info guys! I ordered mine. I think I'm going to go with E-flite 60 and 6s-5000. If I go over 6s, I will need an upgrade on ESC, since CC Phoenix 80 won't do.

Smash McCrash
Dec 10, 2008, 12:01 PM
Its considered a 60 sized plane, so the Power 60 on 6S should be just fine. I have a Power 60 that I like a 15×10 or 16×8 on 6S. I would think that the 15×10 would be a pretty good match for this airframe, as long as your batteries can take it. :D

Mike

caesar95
Dec 10, 2008, 01:47 PM
Mike, yes the MotoCalc prediction with 15x10 looks promising, better than 15x8 or even 16x8, on 6s. Thanks for the input.

Smash McCrash
Dec 10, 2008, 07:27 PM
I am using my Power 60 on a Hangar 9 Fokker DVII. It needs the extra thrust from the 16×8, but my brother is using one on his BTE Venture 60 and another on a Hangar 9 .60 size Thunderbolt. We have used all of the above props and all are within the capabilities of this motor.

I can't wait to hear what the performance is like. I would still like to get one and use this or an equivalent power system.

Mike

caesar95
Dec 18, 2008, 10:38 PM
Kept It Simple (Stupid).

KISS principle.

Bolts, nuts and spacers.

I also found an adapter to use the aluminum spinner with the E-Flite prop adapter.

Michael, what size bolts are you using for your motor mount? It seems 6-32 is the maximum the back plate for the E-flite motor can take, but I just cannot find bolts that are long enough (they should be 3-1/4" according to my measurement). I tried some of my local hardware stores but no luck.
Thanks.

Michael in Toronto
Dec 19, 2008, 12:20 AM
I drilled the back-plate to accept thicker bolts.

BingWing
Jan 08, 2009, 01:53 AM
Ok - Mine is almost done - Will be useing an eflite Power 60 with the Electrifly / Great planes motor mount and 3s 6600 mah ( 2 x 3 3300 ) for power with a BEC spinning a 16x8 APC e prop. Think this should give me very good performance ? Will post picture and video when done. The only proplem so far is i can not find a 1/4 scale pilot bustin Australia that looks good enough. Wish i could simply order one but importer says not available from Great planes !

caesar95
Jan 10, 2009, 04:47 PM
Michael, belated thanks for your input.

BingWing, do you mean this mount? http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXLCL5&P=7
I looked at it but the front plate is not large enough to fit the screw holes of Power 60. So I've decided to use the simple screw+spacer method. Mine is still right out of the box. My plan is to build it light with some carbon fiber parts - control rods, wing tubes, etc. Also wondering if I want to install nav. and landing lights.

BingWing
Jan 11, 2009, 04:38 AM
Yes Caesar, thats the one ! so it will not fit the power 60s X mount ?? In that case i may have to use the same method as you and Michael has used. Could you give us some info on that method Michael ? Which size screws etc ? Landing light ! Now that would be great.... How will you plumb that in ?

caesar95
Jan 11, 2009, 10:20 AM
As far as I can see, there is no way of using the X mount of Power 60 on the great planes mount. You could go without the X mount and drill holes in the front plate. But the pre-drilled holes kind of get in the way.

For the screw+spacer mount, the screws need to be about 3 1/4" length (depending on prop adapters used), but screws of this size beyond 3" are hard to find. I ended up getting 4", 8-32 screws from Hobby Lobby. http://www.hobby-lobby.com/motor-mount.htm
Alternatively I could have got a custom mount from here http://www.espritmodel.com/index.asp?PageAction=VIEWCATS&Category=678
but it's more expensive.

I've used lights from Lazertoys http://www.ncweb.com/biz/dan/RCLights.html in my 48" Aero Subaru. They are fun! A little surgery in the RV-4 would do it, though making the clear cover for the wingtip lighting would be interesting. Perhaps I could use a soda bottle.

BingWing
Jan 12, 2009, 04:46 AM
Love it ! Ok, will get back to you all next week as need to build my Yak 55 for a mag review first. RV all done but need to do engine / elrectrics....still waiting for the LMS to find me a quility 25% pilot. So hard ! any suggestions ?

BingWing
Jul 11, 2009, 07:43 AM
Still thread interest ? Shelved my project due to other planes that neeed to be finished first but now need help.... Still sure about power choice. AS GP recommend, got 2 x 3s 3300 25c but really want as much power as i can get from this.

What Watt draw and amp draw you getting ??? Thanks

lashmett75
Jul 11, 2009, 03:32 PM
I think so. I start my build this week. Another electric conversion.

Hacker A50-12L
8s 2-4s 4000 30/50c XPS batteries
16x10 apc e prop
castle creation phoenix 80 amp esc
Hacker calculated WOT watts at 1600+
Got a 1/5 scale pilot

Just need to locate the servos. Hopefully someone here on RCG has them they are willing to sell. Or looks like I will have to buy new from servo city. Oh ya I forgot for rcvr pack a 2s a123 2300mah battery. Should fly nicely.

James

BingWing
Jul 11, 2009, 08:16 PM
might see what hc have on offer by way of a powerplant

mpope1
Jul 13, 2009, 10:54 AM
James you need to use a HV controller if you plan on running 8s, the 80 amp won't cut it!

lashmett75
Jul 13, 2009, 09:57 PM
James you need to use a HV controller if you plan on running 8s, the 80 amp won't cut it!


Really? Ok, so what is considered high voltage? I have a turnigy 100amp HV I could use instead. I assume anything over 6s is high voltage..? I am running 6s in the spit on a CC phoenic 80. I hope that is ok.

Smash McCrash
Jul 14, 2009, 05:39 PM
"High Voltage" is determined by the ESC you are using, if its rated for less than you want to run, you need the "High Voltage" version. Case in point: Castle Thunderbird ESC's are rated for 3S, the larger standard Phoenix controllers are 6S, and the HV's go to 12-14S. But, If you can wait for the Phoenix ICE controllers, they are good to 8S. So, its a matter of perspective.

Mike

lashmett75
Jul 20, 2009, 09:01 PM
"High Voltage" is determined by the ESC you are using, if its rated for less than you want to run, you need the "High Voltage" version. Case in point: Castle Thunderbird ESC's are rated for 3S, the larger standard Phoenix controllers are 6S, and the HV's go to 12-14S. But, If you can wait for the Phoenix ICE controllers, they are good to 8S. So, its a matter of perspective.

Mike



Thanks Mike. I think i had a brain fart thinking i would use a CC Phoenix on 8s.... :eek: ! Sure glad I didnt hook that up.

Got to fly one this weekend, and all I can say is rock solid. It was a 10s setup and was very easy to handle. Did some inverted passes and nice slow rolls. Cant wait to get mine done and flying, I am sure she will become a favorite very quickly.

James

lashmett75
Jul 24, 2009, 08:07 PM
Ok, so today I got the motor and mount from Hacker. Going to run a A50-16s on 8s (2 4s 4000 30/50c XPS) batteries. Swinging a 16x8 prop should yield at WOT 1600 watts at about 70amps. And I am hoping to build her light, @ about 10lbs. So that will be 160 watts per lbs. Should have plenty of power, and yet very light for slower flying. The build starts this weekend.
Running a Turnigy 100amp HV esc from HC.

James

mpope1
Jul 25, 2009, 09:28 AM
James, this is way off topic but check this out! http://www.rcgroups.com/forums/showthread.php?t=1084941

Alex J
Jul 26, 2009, 10:24 AM
In our club it seems that every other pilot has one RV-4 in his hangar, but all IC.

Not wanting to be left behind, but totally commited to electrics, I ordered my RV-4 and a HobbyCity TGY AerodriveXp SK Series 50-55 580Kv / 1580w motor, a TURNIGY Plush 80A w/ UBEC Speed Controller and some BMS-631 Super Fast Servo 5.0kg / .10sec / 43g servos.

I have plenty of 5000 mAh 5s and 4000 mAh 6s lipos to power up this plane.

Hope to have it flying sometime in August...

Alex

lashmett75
Jul 29, 2009, 12:03 AM
Got my esc today. Now just wanting for the servos. Should be starting the build this weekend. Maybe even maiden next week.

James

BingWing
Jul 29, 2009, 12:16 AM
Mine is about finished, Just decided on my motor / Will be using a Duelsky 80 Amp ESC ( use them in my 3D planes and they are super smooth ) and waiting on a full scale lighting kit and custom graphics have been fitted ( by litepilots.com ) and a 25% Tont pilot. Fitting nav light and flashing strobe.

lashmett75
Jul 29, 2009, 08:13 PM
Got the servos in today. The build starts this Sat. I am "On-Call". So we will see how much I can get done. Hopefully between Sat and Sun I can get her 100% completed. Tonight i will get all the motor/esc soldering done.

8s baby. This will be fun.

James

chalmrast
Jul 29, 2009, 08:36 PM
Start Saturday & finish Sunday???? Not in my wildest dreams.... for me it's more like start Saturday, finish 5 Sundays from now!!

But, that's the way it is with two yungin's running around & a wife whose days off don't coincide with mine!

James, If you're ever bored and looking for something to do, youcan put gether my H&M Corsair some weekend :p :p :p

lashmett75
Jul 29, 2009, 09:09 PM
Start Saturday & finish Sunday???? Not in my wildest dreams.... for me it's more like start Saturday, finish 5 Sundays from now!!

But, that's the way it is with two yungin's running around & a wife whose days off don't coincide with mine!

James, If you're ever bored and looking for something to do, youcan put gether my H&M Corsair some weekend :p :p :p



Chad,

I would be happy to build it for you. I could probably finish it during the week like I did my Spitfire. It took 3 nights of 4 hours. Let me know. Only after I finish the RV-4. But even with that I should be able to build yours faster then your stated time frame... :p :p

James

lashmett75
Aug 02, 2009, 12:06 AM
Okay today i started the "real building" of the RV-4. Very straight forward. that manual is very complete, and only left me guessing on a couple of things.

Thanks to Mike Pope for the help and some guidance. Looks like the maiden will be on Thursday of this week.

The only thing to complete if the soldering of the motor/esc bullets, mounting the rcvr on/off switch, and mounting the arming plug. Other then that stickers and CG check...and recheck.

James

chalmrast
Aug 02, 2009, 01:15 AM
OK, I'll start rounding up the stuff for the H&M Corsair :p :p ;) ;)

Chad Veich
Aug 02, 2009, 01:31 AM
Great to see some fellow AZ RC'ers on the boards, and especially those named Chad! I live on the far west side and fly with the ARCS. We just put down a brand new 600' x 65' runway and I would love to see you guys and your RV's at our FEAR event in October.

Pics of the facilities and the new runway on our web site:
http://www.arcs1.com/

Info on the FEAR fly-in here:
http://www.arcs1.com/club/comingevents.html

Although not electric, I put the first flight on my brother's RV-4 today and all I can say is what a sweet airplane this is. In 20 years of RC flying I don't think I've ever gotten so comfortable with a new airplane as fast I did with this one. Half a lap around the field and I knew it was winner.

http://i23.photobucket.com/albums/b376/CVEICH/RV-4/FRONTQTR.jpg

Chad Veich
www.cwvmodels.com
Scale Model Design & Construction

lashmett75
Aug 02, 2009, 12:55 PM
Thanks for the info Chad. I will definately be out this year, and with my Electric converted RV-4!!!1

James



Great to see some fellow AZ RC'ers on the boards, and especially those named Chad! I live on the far west side and fly with the ARCS. We just put down a brand new 600' x 65' runway and I would love to see you guys and your RV's at our FEAR event in October.

Pics of the facilities and the new runway on our web site:
http://www.arcs1.com/

Info on the FEAR fly-in here:
http://www.arcs1.com/club/comingevents.html

Although not electric, I put the first flight on my brother's RV-4 today and all I can say is what a sweet airplane this is. In 20 years of RC flying I don't think I've ever gotten so comfortable with a new airplane as fast I did with this one. Half a lap around the field and I knew it was winner.

http://i23.photobucket.com/albums/b376/CVEICH/RV-4/FRONTQTR.jpg

Chad Veich
www.cwvmodels.com
Scale Model Design & Construction

chalmrast
Aug 02, 2009, 01:44 PM
Great to see some fellow AZ RC'ers on the boards, and especially those named Chad! I live on the far west side and fly with the ARCS. We just put down a brand new 600' x 65' runway and I would love to see you guys and your RV's at our FEAR event in October.

Pics of the facilities and the new runway on our web site:
http://www.arcs1.com/

Info on the FEAR fly-in here:
http://www.arcs1.com/club/comingevents.html

Although not electric, I put the first flight on my brother's RV-4 today and all I can say is what a sweet airplane this is. In 20 years of RC flying I don't think I've ever gotten so comfortable with a new airplane as fast I did with this one. Half a lap around the field and I knew it was winner.


Chad Veich
www.cwvmodels.com
Scale Model Design & Construction

Chad,

Looking forward to perhaps coming to FEAR for the first time.....

Chad :cool:

mpope1
Aug 02, 2009, 01:53 PM
Its alot like the flagstaff fly-in, laid back, lots of flying and no waiting in line. I liked the runway before so anything more is a big plus!

BingWing
Aug 02, 2009, 08:00 PM
Good to see some activity here again ! After my Model 12 is finiashed and my Nemisis i will finish off my RV... its 90% done...90% to go lol.. ;-)

Chad Veich
Aug 02, 2009, 11:27 PM
Looking forward to putting faces to names at the FEAR event guys, thanks for the replies.

Chad Veich
www.cwvmodels.com
Scale Model Design & Construction

lashmett75
Aug 03, 2009, 12:41 AM
Today was very productive. I got all the electronics installed, minus the rcvr pack and main batteries. I got the rcvr switch installed, and the motor arming plug done. Hooked everything up and centered (manually from the clevis) up the control surfaces.
motor and esc installed as well. I decided to do a watts / run up test. Man at 3/4 throttle I saw 1593 watts. :eek: Full throttle was vibrated the heck out of the plane, so will have to look into that. The amp draw was really low in the mid 50's, if I recal correctly. :)
Setup the flaps for takeoff and landing. Need to mix in some elevator.

Only things remaining before the maiden (thurs am) is to epoxy some velcrow onto the battery tray. Add some straps for batteries, and then CG this baby. Only thing I am missing right now is the rcvr pack. Having a fellow club member making me a A123 2s 2300mah. I will post some pics tomorrow.

Oh ya forgot...need to apply the stickers.

James

lashmett75
Aug 06, 2009, 08:02 PM
Today I maidened the 70" WS RV-4 by Great planes. All I can say is this baby flies very well and stable, even at low speeds. After some scratching on my head on some DX7 programming. Mike, Rick and I figured we turned on the "autoland / flap feature. If I had full flaps down the throttle would not work. After about 10 mins or so we figured it out and got it turned off. Range check was perfect. Taxied her out for a LT to RT take off. I was holding some up elevator as I advanced the throttle and in about 50 feet she took off at about 1/3 throttle. Before I even made the first turn we concluded that she was a tad on the tail heavy side, but not enough to make uncontrollable. Actually she flew fine, and I actually did a nice roll on the first pass down the field. Mike did help dial in the down elevator so she would fly straight. Ailerons were alittle twitchy, but not unmanagable. I put the flaps down to full for landing and she tracked straight. Landed tail high and she rolled out not issues.
Only went like 2 mins. Got her in and moved the batts forward 1". The second take off was very nice and scale. The tail came up and she didnt climb until I used some elevator. I had to trim out some down elevator from the nose heavy 1st flight, but not much. I also dialed in more expo for ailerons as I didnt want to lessen throws. As I really liked the throws and roll rate. Flew around for about 2 mins again and did some 4 point rolls and some full throttle passes. Sounds really good and WOT. Has a nice little growl and whistle. If you have ever see/heard Mikes RV-4 then you have pretty much seen/heard mine.

Overall a great flying plane. Slows down to a crawl with full flaps and is a pussycat in the air. It was funny, Rick was like "hows the trim"? about the time I was dead center, I rolled and said "I think it fine". "It must be if your already rolling" commented Rick.

Thanks to Mike Pope and Rick Huerta for the "double check" and maiden support.

Here is the setup:

Hacker A50-16s
APC 16x10e prop
Turnigy 100amp HV ESC
2-XPS 4s 4000 30c batteries
1-Frankenstein A123 2300mah 2s rcvr pack (thanks Rick Disler)
AR7000 rcvr
DX7
6--TowerPro standard double ball bearing servos 90oz torque @ 6v



James

BingWing
Aug 06, 2009, 08:13 PM
sounds like its a very easy stable scale plane. well done. i am adding nav lights to mine.

lashmett75
Aug 06, 2009, 09:03 PM
sounds like its a very easy stable scale plane. well done. i am adding nav lights to mine.



Thanks. She is a GREAT FLYER!! I actually got some stick time prior to my maiden a few weeks ago on mpopes!!! So the maiden gitters were not too bad. Post some pics of the lights when you get then installed.

James

BingWing
Aug 09, 2009, 02:42 AM
Will do... Its modeled after my full scale RV-8 with a few custom graphics so should look nice.

Cessna_Flyer
Aug 10, 2009, 07:48 PM
Nice. I am making a RV8 the same scale as the RV4 but I am going to cover it like my real RV8. Check out my blog with pics of my real RV8.

____________________________
RV8-N810RG

lashmett75
Aug 10, 2009, 09:38 PM
That is a raelly sweet looking RV-8. Are you building a Kit or scrathbuild?

James


PS...I may have to us your paint scheme ;) :D




Nice. I am making a RV8 the same scale as the RV4 but I am going to cover it like my real RV8. Check out my blog with pics of my real RV8.

____________________________
RV8-N810RG

BingWing
Aug 10, 2009, 09:47 PM
Looks great - Our is all Red and a blast to fly. I actualy wanted to model it after the RV-8 but by the time i recover it, make a new cowl it did not seem worth it. That and H9 have an RV-8 ARF out soon so will get that too.

Got any pix of you 25% RV-8 ?

lashmett75
Aug 10, 2009, 10:16 PM
Here you go. Plane Jane right now. Will have to cover her up some to be different.


James

Cessna_Flyer
Aug 10, 2009, 10:31 PM
That is a raelly sweet looking RV-8. Are you building a Kit or scrathbuild?

James


PS...I may have to us your paint scheme ;) :D



I am building it from scratch. Go ahead and use my paint scheme!! When you post a picture of it, be sure to thank me for the scheme lol.

lashmett75
Aug 10, 2009, 10:35 PM
I will for sure. All the gray you have on yours I will just keep white. Less covering. The black tail, checkers wing tip and cowl will get done for sure. Very nice.

James



I am building it from scratch. Go ahead and use my paint scheme!! When you post a picture of it, be sure to thank me for the scheme lol.

Cessna_Flyer
Aug 10, 2009, 10:36 PM
Looks great - Our is all Red and a blast to fly. I actualy wanted to model it after the RV-8 but by the time i recover it, make a new cowl it did not seem worth it. That and H9 have an RV-8 ARF out soon so will get that too.

Got any pix of you 25% RV-8 ?




Haha yea. Just get the hanger9 RV8 and take the covering off and recover it. Due to amount of time that I have I dont think I have time to make it from scratch so i just might recover the hanger9 rv8 because right now, i am building a RV12 and RV9 so i have little time lol. I dont have any pictures right now. When i do, I will post them

Cessna_Flyer
Aug 10, 2009, 10:38 PM
I will for sure. All the gray you have on yours I will just keep white. Less covering. The black tail, checkers wing tip and cowl will get done for sure. Very nice.

James



Sounds good! PM me then I can give you some more details

BingWing
Aug 10, 2009, 10:54 PM
A couple of pix of our Full scale RV-8. Enjoy

Cessna_Flyer
Aug 10, 2009, 10:59 PM
A couple of pix of our Full scale RV-8. Enjoy




Looks good! What powerplant do you have in it? and what kind of prop? I have a Supirior Xperimental 200hp engine and a 3 blade whirl wind prop

chrisdas
Aug 11, 2009, 02:15 PM
Hi Guys,

I am currently setting up the RV 4 on electric and with any luck will test fly tomorrow ( Wed ). It has a Turnigy 50-65-270 motor with a 100 amp speed control. Th battery is 6sip 3300mah pack. I will initially fly it on an 18/10 prop.
Needed to junk the spinner that came with the kit due to out of balance, big time. Purchased a True Turn electric with lightened back plate.
This electric stuff is new to me but I have successfully been flying a Pulse 60 and am quite pleased with the results.
Tomorrow will tell.

Tx, chris das

BingWing
Aug 11, 2009, 08:19 PM
I-0-390 ( 200 Hp ) and a Hamilton prop. Get about 170 Nts at 6000 Ft.

lashmett75
Aug 11, 2009, 10:11 PM
Good Luck Chris. The CG in the manual is actually about 1 inch aft. I would go 1 inch forward of the manual. Mine was tail heavy at the manual CG, but didnt have any bad habits.

James



Hi Guys,

I am currently setting up the RV 4 on electric and with any luck will test fly tomorrow ( Wed ). It has a Turnigy 50-65-270 motor with a 100 amp speed control. Th battery is 6sip 3300mah pack. I will initially fly it on an 18/10 prop.
Needed to junk the spinner that came with the kit due to out of balance, big time. Purchased a True Turn electric with lightened back plate.
This electric stuff is new to me but I have successfully been flying a Pulse 60 and am quite pleased with the results.
Tomorrow will tell.

Tx, chris das

lashmett75
Aug 14, 2009, 01:13 AM
Chris...CHRIS any maiden flight report yet????? ;)

James

chrisdas
Aug 14, 2009, 10:36 AM
James,

Have three flights on the new plane. You were right on the GG Left mine nose heavy on the second flight and it performed better. Not a speed demon, but actually great scale speed. Will do the basic manuvers, ie roll,loops,inverted and stall turns. Will be trying the flaps soon. She is very fast on landing. Great airlane on electric.

Tx, Chris d

mpope1
Aug 14, 2009, 11:07 AM
Flaps will slow it down to a crawl on landings!

staggerwing
Aug 14, 2009, 11:24 AM
James,

Have three flights on the new plane. You were right on the GG Left mine nose heavy on the second flight and it performed better. Not a speed demon, but actually great scale speed. Will do the basic manuvers, ie roll,loops,inverted and stall turns. Will be trying the flaps soon. She is very fast on landing. Great airlane on electric.

Tx, Chris d
Glad it's working for you--what flight times are you getting ?
be back there next week---


Bob

lashmett75
Aug 14, 2009, 07:11 PM
I am running mine on 8s @ 11.5lbs.

using 2-4s 4000 25c XPs batteries I am seeing flight times of 6 mins at varied throttle. Batteries come down warm and 15.5 volts.

James