The High Performance Props of RCG - Page 6 - RC Groups
Thread Tools
Jan 13, 2013, 06:01 AM
I am actually really slow
Originally Posted by Allan S
Would it be possible to also add suitable spinners and hubs to the prop list.
Regards, Allan.
What do you mean by suitable Spinners? There's been some confusion about shaft sizes lately. But you'll find the props can be made to fit almost any size spinners and hubs with the exception of the folding props which are designed around a certian sized yoke. I'll update the orginal post with shaft sizes to avoid any further confusion though.
Sign up now
to remove ads between posts
Jan 13, 2013, 06:11 AM
I am actually really slow
Originally Posted by Adrian_M
Great looking props there SlowBarless, what is the biggest size you do for a non folding prop?
The biggest I sell currently is a 7x10, but it's a bit of a strange prop as it only has a 5mm shaft hole. One of these days Ill be doing one with a bigger hub and an 8mm shaft size.
Jan 13, 2013, 03:17 PM
KC Racing Team
Allan S's Avatar
What do you mean by suitable Spinners?
Spinners which will handle the high rpm on direct drive (ie. good balance and retaining method).
Back in 2009 I purchased some 30mm CNC Aluminium spinners from the UK for 1/8" (3.175mm) shaft dia, but will be needing more in the future to suit 5mm shafts.

Regards, Allan.
Jan 15, 2013, 09:00 AM
I am actually really slow
I've had good luck with the MPJet Spinners. They are pretty much all I've ever used! The machining on them is first class but you can get a wobbly one every now and then. I believe people have had good success with the Graupner spinners and the pylon ones available from soaring USA too.
Jan 17, 2013, 01:41 AM
I am actually really slow
Big hub 7x10! 8mm prop shaft, 20mm hub diameter. Just what the doctor ordered

Last edited by SB7; Jan 18, 2013 at 07:35 AM.
Jan 28, 2013, 06:09 PM
Aka: Tom Jenkins
ApexAero's Avatar
Hi guys,
new to folders questions, I believe I need a 38-40mm spinner for a 4035. Am I understanding correctly that a 45mm yoke would be needed? New wing cores came in made of some very dense foam, now for the motor test stand and airframe build. After studying the threads that pertain to my build I've self winded a 550Kv 5+6 yy 1.5mm Scorpion 4035 and plan on 11s/12s packs. I think this motor will turn a 10 x 17 at 18k for that 250 goal on 12s and have fun all day on 11s. Feedback?
Jan 28, 2013, 06:33 PM
2012 NZ Speedcup - 231 MPH
DownUnderPilot's Avatar
Hey Tom,

The Grapuner 38mm works with 42mm and 45mm hubs. It depends a little on the size of the root of the blade, but that's hard to tell without trial and error.
Jan 28, 2013, 07:59 PM
Carbon fiber is our friend
Steve C's Avatar
I used an RFM 38mm on my 4020, but I don't worry about the blades folding flat to the sides of the fuse. The only time I did any damage to my blades was from the plane spinning around and sliding backwards. Even then it was minor on the trailing edge and I flew it afterward.
Last edited by Steve C; Jan 28, 2013 at 08:05 PM.
Feb 05, 2013, 09:12 PM
Registered User
Do you have a link to these props?
Feb 06, 2013, 06:16 AM
Aka: Tom Jenkins
ApexAero's Avatar
A thought this thread was the link! see beginning of it all
Feb 22, 2013, 05:15 AM
I am actually really slow
Just keeping this thread alive. First photo of the new layup sawtooth blades. Testing will be hopefully tomorrow. I'll report back with how things went. Improvements are.

1. Higher carbon content, will be able to handle more power for sport flying
2. Torsionally stiffer, hopefully to minimise powerspikes and cavitation during initial acceleration
3. Same weight as the older blades

Feb 22, 2013, 05:29 AM
Registered User
Darron's Avatar
Looks good Ben.
What layup are you using?
Feb 22, 2013, 09:09 AM
I am actually really slow
A fairly heavy one. Forcing out as much excess resin I can and replacing it with more carbon! Ive managed to get about 20% higher carbon content at the same weight.

Layup is spread tow skins and just standard modulus rovings. Quality carbon straight out of japan all round though. But other then that, nothing to special
Feb 22, 2013, 03:08 PM
Livin it UP when Im goin DOWN
Arcteryxxx's Avatar
Has anyone tried the M.Koch 8x23 prop in a sport setup?
I'm wondering how well it will work on a sub-warpdrive power level and how well it will push a 990g Reverb/miniHawk.
Just finished a static test with a 2221-6/KPG5.2 on 4S and 5S.
It was easy on the amps, and if it can push the model to about 80% of the pitch speed.......
1300W, 85A, 254mph pitch speed static.
Feb 22, 2013, 04:02 PM
"The Judge"
sebbe's Avatar
Arcteryxxx , I think peter M has tried that prop in his plasma....

thanks for the numbers...

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion 4S 8" props vs 3S 10" props Performance & Flight Times GuerillaFilm Multirotor Drone Talk 12 Sep 16, 2012 07:50 PM
Discussion Prop Balancer for High Performance TheBlood+ High Performance 27 Apr 04, 2012 04:58 PM
Sold NIB Aquacraft GrimRacer High Performance Prop L42x66 sgil2001 Boats (FS/W) 2 Jul 27, 2010 12:12 AM
Sold 2 Graupner CAM high performance props new in original packages -- $7 shipped for both SPasierb Aircraft - Electric - Power Systems (FS/W) 2 Jan 14, 2009 06:09 PM
For Sale High Performance Prodigy wing kits ,with or w/o motor/prop sylair Aircraft - Electric - Airplanes (FS/W) 2 Aug 20, 2008 02:44 PM