VVRC 40cc Twin

[Ohio AV8TOR]

So there has been a great thread going on this motor and hope to get it started here as well. The moment I saw the videos of this I knew I wanted one. I am building a 83" Extreme Flight MXS right now for it and hope to have it finished soon. I went with the smaller 1/4x32 plug for the compact fit and I am glad I did because it is now reported that this adds 200 rpms. Review in Fly RC magazine

 

[BarracudaHockey]

Cool article

 

[HELLFIRE]

Just bought one of these little gems for my 3DHS 74" Edge. Got to see a handful of these engines flying at the Wenatchee Huckefest!! I was very impressed! Can't wait to try it out first hand!!

 

[SleepyC]

Hows the vibration? Noticeably less than a single?

 

[Islandflyer]

This little twin rocks!

Our Edge prototype in this video has one of these, running great, very low vibration

 

[SleepyC]

Nice!!

 

[Flyingjon]

I was just getting ready to start a thread on this engine when I glanced at the recent posts and saw this! I have 1 in an AW 30cc freestyle 260. It's an awesome engine! Is Tim or Tom from VVRC here yet?

 

[Ohio AV8TOR]

SleepyC;1942 wrote: Hows the vibration? Noticeably less than a single?

I have not run mine yet but this thing is smooth from what many say. Here is a video showing a smooth 1400 rpm idle



https://www.youtube.com/watch?v=nsUznFG-vek

 

[Ohio AV8TOR]

So I could use some advice from those with more gas experience. I completed the engine install today for the VVRC40 on my Extreme Flight 83" MXS. I still need to do the baffling but right now I am concerned with exit air. This cowl has three large 1.79 dia. inlets. As you can see there is a raised tunnel on the bottom of the cowl with a rear exhaust. I am thinking of adding an additional deflector to the rear of this but this volume is just shy of 1X the inlet so it needs more air out.



I see three options. Cut an opening in the raised cowl tunnel. I don't like that as I think it will reduce the natural suction of this aft cowl tunnel. The other two options are cutting a outlet in the canister tunnel either front or aft, what would be best?



Thanks in advance.

1996=977-photo 1.jpg

1996=978-photo 2.jpg

 

[Astrohog]

Flyingjon;1979 wrote: Is Tim or Tom from VVRC here yet?

SupaTim is registered here now.



I have about a dozen flights on my VVRC 40 powered H9 Super Cub and I am absolutely loving it so far! Next up is to install the floats and enjoy some lake flying!



Regards,



Astro