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John Henry
Aug 30, 2008, 09:55 AM
Hi,what outrunner motor would be a good replacement for a 50cc petrol engine. The model is a Westland Lysander with a wingspan of 110 inches and an empty wheight of about 17 pounds. so needs good performance but not 3D.

AllBread
Aug 30, 2008, 10:53 AM
I'd consider going with a gas engine. Much better than petrol, IMHO.



Sorry, I couldn't resist.

Ron101
Aug 30, 2008, 11:39 AM
There's lots of options..
I'm doing a giant scale P-51 so I've been looking what to go with also

I have a neu motor 1521 geared inrunner in my 30% extra it's 17.5 pounds ready to fly.. with a 24x12 prop and 12s 5000 mah packs it's a beast with about 4100 watts.. it makes a DA 50 look silly

Hacker has a few outrunners that would work well.. the A60 and A80 series would more than do the trick

also the Axi 5345/16 is a good settup

look at my post here in giant scale planes and you can see some links to a few settups and videos:http://www.rcgroups.com/forums/showthread.php?t=915922

I'm a huge fan of the Neu motors..they sound cool..sorta like a turbo prop

Ron

Jocke
Aug 30, 2008, 12:22 PM
Maby the Terminator, 10s and 3 blade 24x12 5+kw. Or the Hacker A80, both good with the SPIN200.

LBJ
Aug 30, 2008, 02:09 PM
Look at the 20% Jenny below!

BoneDoc
Aug 31, 2008, 01:40 PM
Allbread, petrol is gas :D.

Economical would be Hacker A60 18L or 16L depending on what prop you're using.

Michael in Toronto
Sep 01, 2008, 09:48 AM
E-Flite 160 brushless motor. Reasonable price, excellent performance, very reliable, easy to mount and operate, and maintenance-free for many years.

drstillpatient
Sep 01, 2008, 10:39 AM
Hyperion 5045 is excellent too. 12S, 24x12 APC-e prop on it rivals a DA-50 with tuned pipe.

appleflyer
Sep 04, 2008, 11:41 AM
this might work:

http://www.aero-model.com/powersetdetails.aspx?id=eps50

sun.flyer
Sep 04, 2008, 03:17 PM
this might work:

http://www.aero-model.com/powersetdetails.aspx?id=eps50


If you don't need 3D performance this would be the ticket. Very reliable setup and you'll get 9+ mins. of sport type flying on this setup.

Tim

jfetter
Sep 04, 2008, 07:51 PM
Hi,what outrunner motor would be a good replacement for a 50cc petrol engine. The model is a Westland Lysander with a wingspan of 110 inches and an empty wheight of about 17 pounds. so needs good performance but not 3D.

Hacker has a new motor (A80) that's supposed to be a direct replacement for 50cc gas engines. From what I've read it should hit the US market in a month or so, 7,000 watts max, pricing somewhere between $550 and $650...

Jack

Ron101
Sep 04, 2008, 08:04 PM
The A 80 is out now.. call hacker it's $669

Jeffery
Sep 04, 2008, 08:08 PM
Hacker has a new motor (A80) that's supposed to be a direct replacement for 50cc gas engines. From what I've read it should hit the US market in a month or so, 7,000 watts max, pricing somewhere between $550 and $650...

Jack


According to the link given above http://www.aero-model.com/powersetdetails.aspx?id=eps50

the A60 is supposed to be the 50cc equivalent. I'd say it was pretty close to a 50cc gasser, I don't think there are many 50cc engines that'll do 7000 watts (that's over 9hp).

jfetter
Sep 04, 2008, 08:09 PM
The A 80 is out now.. call hacker it's $669

Sorry "readily available" is what I should have said, it hasn't hit any of my normal vendors yet...

Jack

jfetter
Sep 04, 2008, 08:18 PM
According to the link given above http://www.aero-model.com/powersetdetails.aspx?id=eps50

the A60 is supposed to be the 50cc equivalent. I'd say it was pretty close to a 50cc gasser, I don't think there are many 50cc engines that'll do 7000 watts (that's over 9hp).

I don't buy it, I've used a lot of Hacker motors but the A60 long series tops out @ 2,600 watts (around 3 1/2 HP, and that's input, not counting output loss) while a well tuned 50cc engine easily produces some 5+ HP at the shaft. You can get power from the A60 in bursts but not a sustained 50cc equivalent...

Jack

sun.flyer
Sep 04, 2008, 08:24 PM
I don't buy it, I've used a lot of Hacker motors but the A60 long series tops out @ 2,600 watts (less close to 3 1/2 HP, and that's input, not counting output loss) while a well tuned 50cc engine easily produces some 5+ HP at the shaft. You can get power from the A60 in bursts but not a sustained 50cc equivalent...

Jack


What you are seeing is POSTED max output numbers listed by Hacker. I can tell you that Sean Plummer himself has told me that the Hacker line of motors are underrated and can be pushed past the posted max output numbers. I have over 100 flights on a A60-18L/Hacker Spin 99/12s 5350mah/APC 24 x 12E that puts out close to 4,000W and have ZERO issues with it.

Yes that is very close to 50cc gas motor output numbers.

Just talking from experience.

Tim

Jeffery
Sep 04, 2008, 08:26 PM
I don't buy it, I've used a lot of Hacker motors but the A60 long series tops out @ 2,600 watts (less close to 3 1/2 HP, and that's input, not counting output loss) while a well tuned 50cc engine easily produces some 5+ HP at the shaft. You can get power from the A60 in bursts but not a sustained 50cc equivalent...

Jack

Several of the guys on here are doing more like 3500 watt input bursts with A60Ls, but that's on 3D planes that don't run WOT on the gassers for more than a burst, either. If you are running continuous WOT with a 50cc engine, then yeah, you are definitely going to need more than an A60L to keep up.

Jeffery
Sep 04, 2008, 08:28 PM
I have over 100 flights on a A60-18L/Hacker Spin 99/12s 5350mah/APC 24 x 12E that puts out close to 4,000W and have ZERO issues with it.



Just a slight correction, it puts in close to 4000W (if you are drawing 95A@42V).

jfetter
Sep 04, 2008, 08:44 PM
What you are seeing is POSTED max output numbers listed by Hacker. I can tell you that Sean Plummer himself has told me that the Hacker line of motors are underrated and can be pushed past the posted max output numbers. I have over 100 flights on a A60-18L/Hacker Spin 99/12s 5350mah/APC 24 x 12E that puts out close to 4,000W and have ZERO issues with it.

Yes that is very close to 50cc gas motor output numbers.

Just talking from experience.

Tim

Tim,

I hear you that the motor "can" do it but let's be real, we shouldn't be recommending someone buy a motor rated @ x watts and routinely pushing it to 115% should we?

I have a few large planes too, I run Axi 5330/F3A motors @ 12S 5350's on 3 of them, the most powerful @ 3,850 watts but I also tell folks I am pushing them beyond the stated specs. Likewise I bet if you return a burned out motor and tell them you over amped it, they likely won't replace it.

I'm not trying to argue, I just think we should stay within factory specs when recomending electronics. One final note, your power is watts in, not out and even the most efficient outrunner is only close to 90% (at best!) efficient meaning you are really only seeing maybe 3,600 watts out...

Jack

sun.flyer
Sep 04, 2008, 09:14 PM
Sorry I don't sit and push numbers on a calculator like many here do. I get my numbers the old fashion way, out of a wattmeter on a real setup (no motocalc/P-Calc for me).

When a manufacture tells me that they underrate there motors like Hacker does I have NO problem pushing them beyond the stated online specs. Heck, Sean likes to run the APC 25 x 12.5E on his 12s setups with the A60-18L. My setup is putting out/in/whatever less watts/amps then his on my little 24" prop.

Talk is talk until you actually take a 17lb. 3D airplane and hover it inches off the ground and know that your power setup won't let you down. There are many videos on this website that show the power of this setup.

Tim

jfetter
Sep 04, 2008, 09:20 PM
Sorry I don't sit and push numbers on a calculator like many here do. I get my numbers the old fashion way, out of a wattmeter on a real setup (no motocalc/P-Calc for me).

When a manufacture tells me that they underrate there motors like Hacker does I have NO problem pushing them beyond the stated online specs. Heck, Sean likes to run the APC 25 x 12.5E on his 12s setups with the A60-18L. My setup is putting out/in/whatever less watts/amps then his on my little 24" prop.

Talk is talk until you actually take a 17lb. 3D airplane and hover it inches off the ground and know that your power setup won't let you down. There are many videos on this website that show the power of this setup.

Tim

Tim,

All I said is I think you do an injustice when you recommend folks push their setup past the rated limits, no need to go off on people using math and MotoCalc, they are just additional tools for figuring out what works and what doesn't, no?

Now if you can get Hacker to agree to replace any burned out motors because "Sean" does it, that would be nice but my feeling is they rate those motors based on what they feel is fair and would say "pass" on the replacement offer...

Jack

blucor basher
Sep 04, 2008, 09:36 PM
Jack - It's definitely a personal decision that a user has to make for himself...but for pilots who are interested in top performance, the Hackers are much stronger than the "pulled out of thin air" ratings on their website. Nobody seems to know where the website ratings came from...Sean tells most anyone who calls how far he pushes his personal motors over those phony ratings...we have hundreds and hundreds of failure-free flights at the higher power levels...Tim isn't exactly speaking out of school.

It is a maddening situation, but that's just the way it is.

Jeffery
Sep 04, 2008, 09:57 PM
Jack - It's definitely a personal decision that a user has to make for himself...but for pilots who are interested in top performance, the Hackers are much stronger than the "pulled out of thin air" ratings on their website. Nobody seems to know where the website ratings came from...Sean tells most anyone who calls how far he pushes his personal motors over those phony ratings...we have hundreds and hundreds of failure-free flights at the higher power levels...Tim isn't exactly speaking out of school.

It is a maddening situation, but that's just the way it is.

And how it's used. I've seen how Ben and Tim have been pushing their A60Ls well past the recommended limits for quite some time, but it's in a "Burst/3D" mode. You put an A60L on a racer and push it for 10 laps at 3500~4000 watts and it's likely toast. A 50cc gasser would do laps until it ran out of fuel. But in the "burst/3D" mode that they are running, the same mode a 50cc gasser would operate in on the same plane, they have proven to be durable. I'll bet that if either Ben or Tim melted their A60L tomorrow, they'd buy another out of their pocket based on past performance.

jfetter
Sep 04, 2008, 09:58 PM
Jack - It's definitely a personal decision that a user has to make for himself...but for pilots who are interested in top performance, the Hackers are much stronger than the "pulled out of thin air" ratings on their website. Nobody seems to know where the website ratings came from...Sean tells most anyone who calls how far he pushes his personal motors over those phony ratings...we have hundreds and hundreds of failure-free flights at the higher power levels...Tim isn't exactly speaking out of school.

It is a maddening situation, but that's just the way it is.

I certainly respect your opinion and I absolutely push many of my own electronics as hard as anyone. I've burned my share of motors, swelled LiPo packs at 170 degrees and have even had planes come down with ESC's on fire, I just don't tell someone asking for advice that it's OK without warning them. I suspect motors are generally under-rated but I've seen Hacker motors burn out within 100 cycles first-hand by being over amp'ed.

I find it somewhat odd that people think you can't design a power setup within specs though, it's not impossible. When challenged I always hear "well, we really push our stuff" (the Tim Taylor philosphy) but the truth is there are many possible combinations to choose from. Don't assume someone designing within specs is any less concerned about performance, it's not "un-manly" to be concerned about smoking a motor or ESC, it's called being a good engineer ;-)

Jack

blucor basher
Sep 04, 2008, 10:11 PM
OK, I'm bowing out. Y'all enjoy.

sukhoi26mx
Sep 04, 2008, 10:26 PM
I have over 100 flights on a A60-18L/Hacker Spin 99/12s 5350mah/APC 24 x 12E that puts out close to 4,000W and have ZERO issues with it.

Yes that is very close to 50cc gas motor output numbers.

Just talking from experience.

Tim

Realistically, Tim, we're talking about thousands of flights if you include all of those from you, me, Josh, Ben, Noah... (and the list goes on) - I'll take real world testing anyday over any other form. I've flown them, and like you believe that the Hacker A60 is the equivalent of 50cc.

Scott

sukhoi26mx
Sep 04, 2008, 10:27 PM
Now if you can get Hacker to agree to replace any burned out motors because "Sean" does it, that would be nice but my feeling is they rate those motors based on what they feel is fair and would say "pass" on the replacement offer...

Jack

Thousands of flights - no "burned out" motors. Do what you want to do, but the rest of us are quite pleased with that performance.

Scott

sun.flyer
Sep 04, 2008, 10:27 PM
OK, I'm bowing out. Y'all enjoy.


Ditto

Jocke
Sep 05, 2008, 01:48 AM
Why argue about the A60 when you simply can go for the A80 thats designed for 50-80cc conversions, or the lighter Terminator, aim for 5kw and you will have loads of power within the specs of the motors !? both spins a 26x12 Mejzlik to 6000rpm thats up to 17kg of trust and you only need a good 10s setup.

sukhoi26mx
Sep 05, 2008, 09:31 AM
Why argue about the A60 when you simply can go for the A80 thats designed for 50-80cc conversions, or the lighter Terminator, aim for 5kw and you will have loads of power within the specs of the motors !? both spins a 26x12 Mejzlik to 6000rpm thats up to 17kg of trust and you only need a good 10s setup.

As I see it, the argument would go in this order for the A60 vs. A80:

1. Weight -many/most 50cc models won't balance with an additional pound on the nose.

2. $$ - $269 vs $500 is a huge difference

3. Prop diameter - 50cc models are designed to swing a 22-23" prop, not 26-28. Beyond ground clearance issues, aerodynamically that isn't really ideal.

Why mess with something when it works? This is a direct quote off of the Hacker Aero-Model website about the A60 -

"Designed for 14-18lbs. Sport, Scale or 3D-Aerobatic models with 10 cell 8000mah LiPoly batteries."

That sounds pretty much 50cc to me.

On the Terminator - is that really nearly $1000? I'm sure it is fantastic, but $1000? Holy Smokes.

Scott

Jocke
Sep 05, 2008, 10:04 AM
You could use 26", but they work good on smaler props to depending on winds and Volts, simple as that, up to the pilot to decide if he prefers big props for 3D or smaler for less torq movement.

Yes the Terminator is fantastic no doubt ;) same goes for the Predator series, power/weight/eff.

larryross
Sep 06, 2008, 03:01 PM
Hi
I am scratch building a 72" WS Pitts foamy. I am by no means recommending this motor, but if price is important to you as it is with me, it is what I am planing to use. :D
Go to Hobbycity click here (http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idproduct=6231) read the customer reviews at the bottom of the page it some times help me chose a power setup. :) It's a little less than 1 to 1 ratio so no 3D or prop hanging.

Larry

ditchit
Sep 07, 2008, 05:14 AM
I tried the largest Turnigy motors from Hobby City on my 30% Yak with disasterous results. Both motors that I purchased suffered bearing failures and subsequent landings caused damage to the airframe. Sending the motors back to get a refund was expensive. Also seems these motors could be being rebadged. I think the top Overtec Thumper motor is the same motor and I know of one guy who also had the motor fail.

I moved up to an A60-18L on 12S and 24x12 it was great but not brilliant. The motor got fairly hot even though it was in clean air. On a 17-18Lb AUW model it didn't have the power to pull out of hover with authority. On the fifth flight I had a heavy(ish) landing and the birch prop clipped the grass and the shaft snapped like it was cream cheese without breaking the prop! Have sent back to Hacker and am hoping they replace under warranty.

I'm waiting for an A80-10...already got the recommended 170 ESC. The additional weight of the A80 over the A60 will suit my CG requirements as well. Will post results when I get it.

MarkF
Sep 07, 2008, 01:37 PM
All of the motors here will fly a 30% but if you want the best weight to power ratio than you need to use a Neu motor. The 1521 1.5 y will hover at half throttle and pull out with authority better than the Hacker. If you guys running Hackers were to try this motor I think you would agree. If you want balliatic power than a 1527 1y will be more than enough. I have a 1521 3d motor in my 30% magic hand yak and it hovers at 1/3 throttle swinging a vess 26B prop. The neu motors are also more efficient, will run cooler, and tolerate higher amp draws if you so desire.

Mark

Jocke
Sep 07, 2008, 03:46 PM
Have you tryed and compared with the A80 ? what amp, Volt, rpm and prop do you have with the Neu?

MarkF
Sep 07, 2008, 04:14 PM
My Neu is not the normal motor people use. Its is a 1521 3d [950 kv] versus a 1521 1.5y [1050 kv]. I only use this motor because it was what I had laying around from another project. In the picture I have an apc 25 x 12.5 prop which works very well and pulls only 72 amps. The vess prop is a 26B which means its a 26 x 10 and pulls 75 amps on the ground and 90 amps in the air acording to the spin 99 controller. If I wanted something to compete against the A80 I would use a Neu 1527 2d motor and a 26 or 27' prop. If the guy with the carden had bought a Neu I dont think he would be complaining about the marginal power. If Jeffry would post his video of his 30% 300 extra I think you would see what I'm talking about.

Mark

ditchit
Sep 07, 2008, 04:48 PM
You have to use a gearbox with these direct drive Neu motors right? That would rule it out for me, right there.

jfetter
Sep 07, 2008, 05:46 PM
You have to use a gearbox with these direct drive Neu motors right? That would rule it out for me, right there.

Yeah I spent the first half of my electric flight time using Hacker, Jeti and Mega inrunners, some geared others not, I don't miss the geared ones at all! I moved to outrunners a few years back and never looked back, quiet, smooth, no maintenance and generally less expensive...

Jack

Jeffery
Sep 07, 2008, 05:51 PM
You have to use a gearbox with these direct drive Neu motors right? That would rule it out for me, right there.


Strictly speaking, if it's got a gearbox, then it's not direct drive.

Considering what you've been through with reliability and power of the 3 outrunners you've had on your plane, it's strange that you'd be so opposed to geared Neu motors. Not all geared inrunners are created equal.

ditchit
Sep 07, 2008, 05:59 PM
I'm opposed to gearboxes purely because they've given me so much grief in the past. The Turnigy motors I had were cheap and you get what you pay for. I'd never cut corners again. The shaft on the Hacker I put down to bad luck. So not strange at all. From what I've seen of electric conversions, gearboxes are in the minority. Not saying I couldn't be converted back but I'd like full details on where the motor and the gearbox come from if possible.

Jeffery
Sep 07, 2008, 06:09 PM
I'm opposed to gearboxes purely because they've given me so much grief in the past. The Turnigy motors I had were cheap and you get what you pay for. I'd never cut corners again. The shaft on the Hacker I put down to bad luck. So not strange at all. From what I've seen of electric conversions, gearboxes are in the minority. Not saying I couldn't be converted back but I'd like full details on where the motor and the gearbox come from if possible.

That's the deal. Lots of people have had trouble with gear drives in the past. You couldn't give me a geared Hacker. Thing is, the Neu P42 geardrive wasn't around back then. It's not even remotely in the same class as something like the Hacker Acro gear drive. As for maintenence, you got me there. I lie awake at nights dreading that 30 minutes every 2 years I have to put into gearbox maintenece. :)

jfetter
Sep 07, 2008, 06:26 PM
That's the deal. Lots of people have had trouble with gear drives in the past. You couldn't give me a geared Hacker. Thing is, the Neu P42 geardrive wasn't around back then. It's not even remotely in the same class as something like the Hacker Acro gear drive. As for maintenence, you got me there. I lie awake at nights dreading that 30 minutes every 2 years I have to put into gearbox maintenece. :)

Not to start an "inrunner versus outrunner" argument but the outrunner design really is superior, it's the way electric motors should have been designed from day one (magnets held in place by increasing centrifugal force rotating around a stator). The number of magnet issues alone in my early inrunner history was enough to make me never want to go back. They are more efficient and you can get more power from a lighter package, no argument but unless you are severely limited and can't add weight and power to offset, I don't see the big deal with a larger outrunner...

Jack

Ron101
Sep 07, 2008, 06:44 PM
If you look on page one.. post #3
you can see the numbers I put up with my 1521 nue motor with a 24x12 prop..
I have many outrunners and have helped many guys fly there planes

and nothing competes weight to power as the Nue motor....

instead of a huge 3 lbs outtrunner put a 1 lbs Nue motor and put a higher Mah pack.. better use of dead weight...

I put 5 flights on my dietrich 50 cc with the nue today... I have over 50 flightsd on it and just love it.. the power is unreal

but hey stick with the outrunners it will make it easier for me to get more for myself :D

I'm just dreading next year when I have to take off four bolt and grease the gears ;)

Ron

MarkF
Sep 07, 2008, 07:22 PM
The geared motors today dont even compare to what we use to have. I have seen more failures with outrunners and there bearings letting go or the magnets comming apart which destroys the whole motor. When a gearbox starts to go bad it whines or grinds and lets you know its time to service. As far as outrunners being more efficent then you dont have much knowledge about electric motors if you believe that. Just like outrunners are better today than they use to be and so are geared inrunners. I would love to see somebody who runs a hacker A60 switch out there motor for a 1521 1.5y Neu and come on here and say what they really think of the two.
Mark

jfetter
Sep 07, 2008, 08:07 PM
The geared motors today dont even compare to what we use to have. I have seen more failures with outrunners and there bearings letting go or the magnets comming apart which destroys the whole motor. When a gearbox starts to go bad it whines or grinds and lets you know its time to service. As far as outrunners being more efficent then you dont have much knowledge about electric motors if you believe that. Just like outrunners are better today than they use to be and so are geared inrunners. I would love to see somebody who runs a hacker A60 switch out there motor for a 1521 1.5y Neu and come on here and say what they really think of the two.
Mark

Easy there... It may not have been clear but I never said outrunners were more efficient, I conceeded inrunners were more efficient and you can get more from a lighter package. I also said that unless you are constricted or limited by weight, a larger outrunner can be used to offset that...

Jack

MarkF
Sep 07, 2008, 09:39 PM
In my case a heavier motor would have helped with cg but I wanted to try and keep my plane light. The hacker weighs 31.9 oz and the Neu is 21oz. I had to take the 2 servos in the elevator out and then I only used 1 inside the fuse and made it a double pull pull. This saved even more wieght but was a little bit of a pain to do. Now I have a 30% yak that weighs in at 18.5 lbs. I think most of the Hackers come in at over 19lbs. I do have several hackers in other planes and they are great and Ive seen the predator and it works great but again at a much higher amp draw than the Neu. But when it comes to the big stuff the geared Neu motors just dont compare with better performance, less amps and cooler temps than any outrunner can give. I'm not trying to convert Hacker runners, I just want someone who is looking to convert a plane this size and wants the best performing motor money can buy then he or she should know what else is available. OK now I'm done.

Mark

Ron101
Sep 07, 2008, 10:56 PM
Don't agree .. but to each there own

if we all did the same thing this hobby would be a bore... hacker makes a good motor..

I know it's off track .. but look at almost every high power expenisive 120 mm edf jet.. they all have Nue motors

these planes need the most efficent, highest power and lowest weight motor on the market..

All of BVM's $5000 + jets run them ... 1521 and 1527 on 16s over 6000 watts

I have a Tam jets A-4 and F-16... Nue motor pushes these jets over 150 mph

There tough ... these are direct .. but the gear box is the highest quailty I have seen

Ron

jfetter
Sep 07, 2008, 11:26 PM
Don't agree .. but to each there own

if we all did the same thing this hobby would be a bore... hacker makes a good motor..

I know it's off track .. but look at almost every high power expenisive 120 mm edf jet.. they all have Nue motors

these planes need the most efficent, highest power and lowest weight motor on the market..

All of BVM's $5000 + jets run them ... 1521 and 1527 on 16s over 6000 watts

I have a Tam jets A-4 and F-16... Nue motor pushes these jets over 150 mph

There tough ... these are direct .. but the gear box is the highest quailty I have seen

Ron

I am not sure this is a valid example of a comparison of inrunner versus outrunner. An inrunner in an EDF is required, you need in excess of 60K - 90K RPM, an outrunner isn't even an option...

Jack

Ron101
Sep 08, 2008, 01:10 AM
:rolleyes:
I said it was off track
but it does show that the Nue motor is very durable was the point

bvm and tam jets run the 1521 up to 16s at over 6000 watts

I dig hacker so it's not a big deal... I just feel your writing off the nue motor with no experiance flying one..

whatever you go with I hope it works out great for you... us electric guys have to stick together :p

Ron

Jocke
Sep 08, 2008, 01:48 AM
Yes an inrunner is more efficient than an outrunner ;) always lighter... i dont even want to start that debate (just making a note) outrunner cant handle high rpm ? (one more note) :)

Back to the topic!

A 50cc gas engine can swing a XXxXX prop at what rpm? 22" maby?

sukhoi26mx
Sep 08, 2008, 02:14 AM
Back to the topic!

A 50cc gas engine can swing a XXxXX prop at what rpm? 22" maby?

A strong 50cc on a can will swing a Mejzlik 22x10 or 23x8 at 6900-7000 rpm.

Scott

spit
Sep 08, 2008, 02:06 PM
When buying a motor, you're also purchasing the service provided by the manufacturer. Neu's are very efficient, no question. But their customer service and motor availability are both lacking. Flame me if you want, but telling people the projected waiting period for motor delivery is a couple weeks when in fact it's three to four months is unacceptable. Steve also comes across very arrogant in a lot of his posts, I guess building the god of all motors gives you that right. :rolleyes:

We need more people like Ben at 3dhobbyshop. I'm not a part of the peanut gallery or kool aid gang, I don't even know the background on those terms and their relation to 3dhobbyshop. I just know Ben is a down to earth humble individual who is willing to go out of his way to make sure you're happy with the products he sells.

For the record, all but one of my planes fly with geared inrunners(including a neu 1110 1.5y).

MarkF
Sep 08, 2008, 02:59 PM
I agree on the lead time to get a motor but there are some dealers with stock if you can find them. But thats because there that good and Steve is building motors as fast as he can. I know Steve personaly and I dont think he means to come off the way some people take it but he is more to the point kind of person and a very nice person to boot. Steve is a manufactor and trys to help people whenever he can. I dont see Mr Hacker or Lehner on these forums trying to help anybody so I guess people dont have opinions about their character to post on open forums.

Mark

jfetter
Sep 08, 2008, 03:05 PM
Let's not get into a brand "X" versus "Y" argument, the guy just wants to know a good electric candidate to replace a 50cc gasser...

Jack

Jocke
Sep 08, 2008, 03:49 PM
So if we continue on topic, the Xtra EVO 30 spinns a 22x10" to over 6000rpm, but that motor i think will be to light for a 50cc conversion, it will be hard to get good CG. Another example is the Terminator that spinns 24x12" to 6000+rpm and the Hacker A80 will do the same but its abit havier, with the A80 or Terminator one could go over the top and prop to 5+kw and leave the 50cc gas left in the dust ;)

Ron101
Sep 08, 2008, 07:55 PM
Well I'm with you guys on that .. I'm starting a gaint scale mustang and if I can't get a neu motor in the next few months then I'll will most likely try out the A80.. I'm sure that purple jewel will do the job just great... but it's pretty heavy and it $670 for the motor.. that hurts pretty bad
I was also told by hacker that you should run there hacker spin 170 ESC.. it was made for the A80 and that castel has the wrong timing for it (this is what hacker told me, who knows maybe they are just pushing there controller)... that bad boy is $640... so it's a $1300 settup

guess you have to pay to play
but you could prop it up and run more cells

Ron

jfetter
Sep 08, 2008, 08:41 PM
I was also told by hacker that you should run there hacker spin 170 ESC...

Ron

Will they support it with the Jeti Spin 200 (http://www.espritmodel.com/index.asp?PageAction=VIEWPROD&ProdID=5393)? That will save you another $100...

Jack

Ron101
Sep 09, 2008, 12:53 AM
I'm not sure Jack
But I couldn't see why not

that would be there call to make.. I was told if the amps were low and we were proped down then the CC110hv would work.. but the timing was wrong to prop up to the high amps... but it seems like the spin 200 should work

call to be safe

Jocke
Sep 09, 2008, 01:45 AM
The Hacker and Jeti SPINs are the same, so it will work.

ditchit
Sep 10, 2008, 09:21 AM
I get a server timeout whenever I try www.neumotors.com

Would be interested in prices? Does SteveN just sell direct or through other outlets?

Jeffery
Sep 10, 2008, 09:39 AM
I get a server timeout whenever I try www.neumotors.com

Would be interested in prices? Does SteveN just sell direct or through other outlets?

The Neu site is down, and Neu is in Kiev at the hotliner/pylon World Championships for the next couple of weeks.

They distribute through Castle Creations now, there are prices on the Castle site. The Castle site is screwed up, they do not have the option for the P42 gearbox listed on the 15XX motors, add $57 to the cost of the P32 option for the P42.

There are dealers in Europe, but the only dealer list I know of was on the Neu site.

The Reaper
Sep 15, 2008, 07:41 AM
hey guys

scott from www.reaperbrushless.com here for 50cc replacement we have the Reaper GR70cc which is a little more powerful than a DA50. and the nice thing about ours is we have a cf mount to convert mounting to the DA mounting pattern. very easy install. and if thats not enough we have a GR85cc which is a DA100 electric replacement as seen in this video.

http://www.youtube.com/watch?v=IL-Y02WZy6g there are more videos on our youtube page

scott

jfetter
Sep 15, 2008, 10:41 AM
Scott,

You guys show a voltage range and a max amp rating, how much sustained watts do you support for the 70 and 85? I could figure this out myself but I don't want to assume incorrectly...

Thanks,

Jack

The Reaper
Sep 15, 2008, 10:46 AM
hey j

gr70cc runs arround 5000 watts like it not even working hard and the gr85cc we have been running it at 6000 watts without getting warm.

scott

Scott,

You guys show a voltage range and a max amp rating, how much sustained watts do you support for the 70 and 85? I could figure this out myself but I don't want to assume incorrectly...

Thanks,

Jack

Bladerunner1955
Oct 03, 2008, 12:22 AM
Here is a clip of the same size Top Flight 1/5 scale 24 pound P-51's. Big Beautiful Doll is running a AXI 5345 on 12 cells and spinning a 22/12 prop. the Gun fight er is running a DA 50, looks close to me. Even the gas guys said my electric P-51 might have been faster. They close to me.
http://www.youtube.com/watch?v=mn1s5UPZZY4

ditchit
Oct 05, 2008, 10:00 AM
Question for any Hacker A60-18L users out there. Are you bending shafts on a regular basis. I have a 24x10 birch gas prop on mine running on 12S. On landing yesterday the prop tip just caught the grass. Shaft is bent and is going to need repair. Just surprises me this can happen so easily. Big planes so bigger forces at work I guess but the prop didn't even have a scratch. Anyone else get shafts bent on their big outrunners easily?

3Deranged
Oct 05, 2008, 10:54 AM
Mine snapped putting on another prop(?). Didn't really crank down that hard or so I thought. :rolleyes: I'll be more careful in the future though...

jfetter
Oct 05, 2008, 05:45 PM
Question for any Hacker A60-18L users out there. Are you bending shafts on a regular basis. I have a 24x10 birch gas prop on mine running on 12S. On landing yesterday the prop tip just caught the grass. Shaft is bent and is going to need repair. Just surprises me this can happen so easily. Big planes so bigger forces at work I guess but the prop didn't even have a scratch. Anyone else get shafts bent on their big outrunners easily?

I've never bent or snapped the aluminum prop adapter on any of my larger Axi or Hacker motors but I always mount so the bell spins and I use the bolt on adapter...

Jack