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Posted by nickden | Today @ 05:08 AM | 26 Views
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Posted by Bunnyshooter223 | Today @ 01:14 AM | 135 Views
I finally got the bearings out my FA-72A "#2" (i sold the first one)

Usually... i use blocks of wood to set case upon. Then a ratchet extension and rubber mallet to knock bearings out (after applying heat and oil)

Well, the rubber mallet was not enough. Lots of heat and oil, but the front bearing was stuck!
So I switched to a small hammer instead of rubber mallet, to strike the ratchet extension. I was careful too, no need to crack the aluminum case with excessive hammer blows... and it worked! Easy peazy

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I finally cleaned my FA-72A '#2'
tonight


The FA-72A has a new metal back plate, pretty sure i have proper metal screws to mount the carb...
Only thing missing is set of bearings and a the 'A' version cam case gasket. The gasket set i ordered is for the 'B' (i can make a gasket)

The cherry, Saito's gasket set came with new head-intake O-ring!
This is great, will likely eliminate any head-intake leaks i was having. The intake leaks were due to excessive vibration caused by (the original) plastic backplate, methinks.

I have a nice brass pipe, that Gary Cee made me, to test on video. So i am eager to get this engine going. I have run this FA-72 with his pipe before it lost compression--and it sounded great!

Balsa Plane:
I own a GP Easy Sport 40 ARF (MKI) model airplane. It is my entry into balsa/ glow flying. I have decided to go with my FA-56 or FA-72. Either would fly it well

I have enough rc experience ...ground-running Saito thumpers and flying...Continue Reading
Posted by dsquad | Yesterday @ 10:14 PM | 187 Views
I have this module for almost a month now and is working good, is cheaper True-D V3 module!
AKK Diversity Module a Cheaper True-D V3? (5 min 4 sec)

Posted by old4570 | Yesterday @ 09:55 PM | 205 Views
A quick recap !

Fasttech.com sent me a 50mm EDF for review testing ..
To really test it , it should go into a plane ..
The plane is the Prime Jet pro from HobbyKing , and be one of those foam board cut out's ...
It took a long time for the EDF to get here , so the model did nothing for a while ..

Obviously for a EDF to replace a pusher prop , a little tweaking is required ..
Fuselage was shortened , and a cut out made for the EDF ..
Vertical stabilisers were moved inboard to stiffen the area around the EDF ..

Since then ...
The larger carbon spar was installed , epoxied each end .
When the epoxy dried I ran a bead of white glue along the spar for contact with the wing ( more stiffness )
Also I added some runners underneath to which I attached a skid plate for the EDF .. ( Keep it out of the dirt )
Also I used some budget 9g servos I got (?) a long time ago for projects ( Just like this ) ..

Needs doing ...
Solder the connecting pins to a 4ch Rx ( FS2A )
Bind the Rx and locate the 2s battery ...

Ooooh yeah !
After installing the EDF , I gave it a run on the intended 2s battery
Looks like 2s will power this project just fine ...

That elusive G Spot !
Where Oh where will the Centre Of Gravity go ?
Anyone watch the Chucky Video ?


Posted by Tahoed | Yesterday @ 04:12 PM | 340 Views
Just a few more things to tidy up......Comes in at 3 lb. 2 oz. nicely balanced...
Posted by simages | Yesterday @ 03:53 PM | 366 Views
Wing Span | 40 in
Overall Length | 19 in
Wing Area | 220 in2
Flying Weight | 9.5 oz
Wing Loading | 6.2 oz/ft2

Controls Required | 4 channel, R/E/A/A/T
Construction | Balsa / Ply
Category | Park Flyer

Build Log Thread HERE
Posted by RC Roundtable | Yesterday @ 02:17 PM | 379 Views
Episode 72: "The Champ of Theseus" is now live!
http://rcroundtable.com/podcasts/mp3/RCR_episode_72.mp3

The gang got together for a live video chat. We talked about:
-Old School Model Works Racers (2:06)
-Light Controller for Night Radian (9:42)
-Spektrum Smart Tech Batteries (18:10)
-Magazine Hat Trick (28:03)
-The Champ of Theseus (35:32)
-Programming SAFE (41:09)
-Christmas loot (48:10)
-Upcoming event plans (57:18)

You can visit our website at RCRoundtable.com to listen over the web or download an MP3 of the show. Or, you can subscribe to RC Roundtable on iTunes.

We would love to read your comments and ideas. Please drop us a line here, our facebook page, or email: contact@rcroundtable.com.
Posted by Ssayer | Yesterday @ 01:33 PM | 397 Views
I finally finished my case (too many other 3D projects going on. Must be winter, eh? ). I'm just waiting on the .040" 3M double sided sticky pads to bind all the inserts together for a tighter look.

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...Continue Reading
Posted by Ssayer | Yesterday @ 11:11 AM | 510 Views
Through trial and error using rubber bands, I found that I can use the larger (450mAh and 550mAh batteries) in this quad without issue so long as I wasn't doing a lot of flips and rolls. I get double the flight time and can still fly aggressively through my gates and chicanes, which is my preferred flying style. So, it was time to look for a battery bay that would do what I wanted. I searched Thingiverse and found a number of designs that met some of my criteria, but none that did everything I want (the joy of 3D Printing is that you really CAN have it YOUR way!). So, here is what I came up with that works for me...

The 3D Printed Battery Bay
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How it looks attached to the quad
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The batteries that I designed it for
...Continue Reading
Posted by GroundControlRC | Yesterday @ 09:33 AM | 490 Views
Review Part 2 - RacerStar BR2208 1400kv Motor Thrust Test with 9x5 Prop



Here is a link to the Video:
https://www.youtube.com/watch?v=OGnyTx8I3fM

This is a very inexpensive motor and I purchased it for $4.99 US
The Manufacturer's Stated Thrust Data is higher than what my Motor was able to provide with an 8x4 Prop which is what they used in their Thrust Test with a 3S LIPO.
I had a comment on my initial Review & Thrust Test of this Motor and was told that the Motor performed better with a 9x5 Prop.
I purchased a couple of 9x5 Props to conduct this Thrust Test again.
Let's see how it performs with this Prop and then I will state my conclusions.

Here is a link to this Motor:

Racerstar BR2208 1400KV 2-4S Brushless Motor
https://www.banggood.com/Racerstar-B...47791920140372

Here is a link to these Props:

JXF Poly Composite Propeller 9x5 (2pcs)
https://hobbyking.com/en_us/jxf-poly..._asc=857965178


Manufacturers Test Data:

LIPO Prop Amps Thrust Power Efficiency
--------------------------------------------------------------------
3S 8040 11.5 630 128 4.9 g/W


Here is My Original Thrust Data using an 8x4 Prop:

Motor: RacerStar BR2208 1400kv
ESC : HTIRC 20A 2S-4S w/5V2A BEC
LIPO : DualSky ECO S 3S 800mah 25C

Prop : Gemfan ABS 8040 (8x4) Prop
Thrust: 590.3 grams
Amps : 9.1
g/W : 5.1

Here is My New Thrust Data using a 9x5 Prop:

Motor: RacerStar BR2208 1400kv
ESC :...Continue Reading
Posted by Pierre_de’ Loop | Yesterday @ 09:19 AM | 497 Views
The Balsa USA website says the Taube should weigh in at 5 Lbs. and I confess being skeptical, but so far I'm at 3.3 Lbs. That weight includes the engine, landing gear, wheels, radio and airborne battery plus all the built up parts. The only stuff missing is push rods, control horns, sheeting on the bottom of the fuselage and the "cowling" plus the covering. The plans call for 1/8" sheeting but I'll use 1/16" along the bottom and 3/32" up by the engine.
Posted by BEAMRC | Yesterday @ 01:26 AM | 769 Views
New BEAM Helicopter which will be going to release very soon.....
This is the picture of the 550 Class BEAM Helicopter,
The AQUILA Helicopter. (Tail Part only)
Posted by Slyser | Yesterday @ 01:21 AM | 712 Views
So I put a brand new span f4 Tower in my latest build everything was working fine and the night after BF flashing and configuration I plugged in a battery to test my switches and next time around the Lipo wouldn’t power it. I Plugged usb in and suddenly it turned on but only with usb. I looked for a solution for probably a week and a half I even ordered a new Tower. Finally after emailing GEPRC they sent me detailed instructions on what to do. So if this happens to you here’s the fix. Basically shorting out where the faulty component was by soldering the two pads.
Posted by rclad | Yesterday @ 01:16 AM | 737 Views
To determine the minimum thrust I need (or would be happy with) for my 104" Extra 300 V2, I needed an accurate measurement of the thrust I have been getting out of my 95" Extra. The electric set up in that plane has been very good for most conditions in which I practiced and competed in 2018, flying scale aerobatics. While the thrust could have been improved with a different prop or bigger motor, that setup struck a good balance between weight, thrust and flying time. After more than 150 cycles on the batteries, I can still get a ten minute flight performing two Intermediate IMAC sequences, with time left over for extra maneuvers.

Once I knew what thrust I was currently getting and happy with, I could calculate a thrust to weight ratio, then work backwards from an expected all up weight on the 104" to calculate the minimum thrust I would need from an electric power system. Adding 2 lbs for the additional parasitic drag of the bulkier airframe should get me close to the same vertical performance I had with the 95".

After borrowing some climber's tubular webbing from a co-worker I finally had what I needed to stake the 95" Extra to the ground and run her up to full throttle. Unfortunately, the weather turned cold and more than half a foot of snow landed by Sunday morning, so I moved the test indoors. Here are the results:

95" Extra 330SC-E
Motrolfly DM5335 189Kv
Jeti Mezon 135 Opto ESC
Falcon 24x10 CFE
2x Glacier 6s 8000mAh (...Continue Reading
Posted by old4570 | Jan 15, 2019 @ 10:27 PM | 801 Views
I havent put in any RC gear ..
But I thought I might Chuck it some more ...
It does seem to like / favour a forward CG , perhaps it's that Canard ? Lifting the nose ?

Prime Jet pro Back Yard Chuck's (4 min 22 sec)



Next I will start installing the RC goodies , I will start with the 9g servos , then solder up a 4ch FS2A Rx and then install the ESC and EDF .

Hmmmm , I might Park it before I try to apply power ( The little hill = test glide )
Posted by PeterVRC | Jan 15, 2019 @ 07:14 PM | 855 Views
Not exactly RC aircraft modeling, but if you LIKE aircraft then you might very well like Flight Simulators also. If you like Flight Simulators then you will LOVE VR !!!! "Incredible" is a good description of it.....

There are not really many VR Headset choices. The main two are the Oculus Rift and the HTC Vive in plain or Pro versions. The Rift and plain Vive are the same specs pretty well, and the Vive pro is higher resolution but COSTS a fortune then!
So for various other reasons in the equations, the Oculus Rift is a clear winner in my totals of all aspects.

It cost AUD$529 for the "Occulus Rift with Touch" set at Amazon.com.au, which is pretty well $100 or more lower than anyone else sells them! And it was with free shipping. You WANT that 'Touch set', not just an Occulus Rift on its own! The extras it gives cost a FORTUNE to buy later, and you actually need EVERY item they have in that set!

Now you might think "That is quite an expensive thing", and in some ways it is, but you are getting stuff made like 'Mercedes" or "Apple" quality! This stuff is made 10/10 in no compromise, cover all needs to the Nth degree and in QUALITY.... and even the packaging and box are premium in every way you could do so! (Which Apple do, and this might exceed typical Apple packaging 'luxury' too!)
Also, consider the cost of a good monitor for a PC and then this whole Oculus Rift cost is very reasonable and I think worth every cent!
More so...Continue Reading
Posted by Ssayer | Jan 15, 2019 @ 06:48 PM | 948 Views
The M7 is made to work 1S or 2S, but I can't see me running it 1S, since all I have to do on 2S inside is to limit throttle a little in my xmtr and I still get the power of 2S. With that in mind, I drew up a battery bay that would hold both large (450mAh and 550mAh) batteries along with the 260mAh stock batteries, including 300mAh batteries. Here's what I came up with for my 2S setups:

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This 3D Printed bay is attached by clipping off the bottom of the current battery bay, leaving 1mm worth of a tab on each of the four arms and simply clipping it in (I use a tiny drop of hot melt glue on each tab just because. Also, it's easy to scrape off the hot melt glue if I want to detach the bay. ). The bay allows easy access to the USB plug.

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Here's what it looks like from the bottom with the large batteries

...Continue Reading
Posted by bnrusso | Jan 15, 2019 @ 04:20 PM | 949 Views
My goal is to update the firmware, and add a multi protocol module.
BACKGROUND:I recently purchased this working TX from an auction. I already owned 2 older 9X, 1 Turnigy and 1 frsky. I decided to try to do a firmware upgrade and after lots of research and you-tube videos (mostly quite old ones) I decided to document these adventures for 2019.
#1 what firmware to use:
This TX came with it's original Turnigy 9x software.
I very much like OPEN-tx (thanks to you-tube edu-macation by R Scott Page) which I have in 2 current radios. A Jumper T12 using a modified version called Jumper TX and a new for Christmas Taranis QX7s. As I now understand https://www.rcgroups.com/forums/atta...d=11564993only an older version 2.0 Open-TX would work on this older radio. Another choice, an even older OS as OPEN-9X.
Since I've been reading about an alternative ER9X and the work of Mike Blandford I decided this will be my go-to first attempt.
Mike also has a version of ER9x that seems to support the T-12 too.

#2.Here are the details of how I went about getting this working.
I purchased a USBasp board from a local US ebay vendor for around $4.click here for my E-BAY link
I could have got it cheaper but CA to AZ was quick for a little more.
I also purchased a 10-pin to 6pin adapter for $.99 click here for E-bay link
When I attempted to use this USBasp on my windows 10 computer it did not install correctly.
Research pointed me to This Zadig website for the correct drivers.
Following the install...Continue Reading
Posted by scousethief | Jan 15, 2019 @ 11:47 AM | 1,069 Views


Most already know that i do enjoy "tools" that Work ! and by work i mean screwdriver inserts that dont break off or bend when you try to dig out that last stubborn screw or the screwdriver itself doesnt fall apart when you use it on anything other than foam. There are a multitude of different options available from pound/dollar shop sets that are a gamble on quality ( ive had some good sets and bad ) to mid-priced general sets and all the way up to expensive high quality sets that look very nice but are out of my price range ( doesnt stop me looking ).

My go-to set has been the Daniu 25in1 set in the 3rd post below and it suits me perfectly fine ( because its CHEAP, $4.44 atm ) the Daniu set is contained in a simple imitation leather wallet and the supplied bits are enough to take care of the majority of jobs you would use a mini screwdriver for. More importantly the bits are reliable and quite sturdy and havent bent or chipped even with my usual heavy handed abuse. The Daniu bits are held in the wallet in an angled slot which helps prevent the bits from falling out or coming loose in your pocket. I have had the Daniu set for quite a while now and its still in excellent condition with all bits in tact and i honestly have ZERO complaints about this set so i will use it as a benchmark to gauge the quality and reliability of all future sets.

The Christmas period left me a few ฃ's in my wallet and having plenty of toys to play with i decided to buy a couple of...Continue Reading