VVRC 40cc Twin

[Lojik]

My Mean Green VVRC Machine

Having a little trouble getting a stable lower idle, will do some more fiddling but I didn't realize my fuel was over 6 months old so that may have been the main reason.

 

[Flyingjon]

I would suggest fresh fuel, but it will idle better with a little more run time. Ten flights isn't much time to break in. [emoji4]

 

[Lojik]

The guys said that too, they said if you can live with it for now best to run the higher idle until at least another 15L is through the engine, better than risking a mid air cut, although I fly gliders so handling a dead stick should be fine

 

[bigblueswope]

I would expect break in to continue take 10-12 gallons now that you've switched to synthetic.

 

[Flyingjon]

I don't know how you have your throttle set up, but I would suggest an idle up switch. I use one all the time on mine. You can run the idle higher in the air to prevent a dead stick and then switch to low idle for landing.

 

[Alky6]

+1 on the idle up. I have 8 gallons (redline @ 40:1) through mine now and it idles quite nicely at about 1050. I still use an idle up switch as an insurance policy.

 

[Lojik]

Thanks guys, will get that done on the next outing

 

[witchfingers]

I have one of the small plug versions in a cub. It starts easy but I am dealing with heat issues. The idle is awesome. The control surfaces don't shake while sitting on the ground like a single does.

 

[Flyingjon]

I've heard of other guys having the same problems. Mine is in a freestyle 260 and I have a very large opening in the bottom of the cowl from when I had a dle 35 in it. So I have no heating issues. I have a cowl on back order but I'm wondering how much I need to remove because I really hate to remove as much as it now. Maybe we could baffle these babies?

 

[Alky6]

I've heard of other guys having the same problems. Mine is in a freestyle 260 and I have a very large opening in the bottom of the cowl from when I had a dle 35 in it. So I have no heating issues. I have a cowl on back order but I'm wondering how much I need to remove because I really hate to remove as much as it now. Maybe we could baffle these babies?

Mine is baffled-on an EF78 Extra 300. It really didn't run consistently and was a booger to jet until I did baffle it. Cylinders also run evenly after baffling. Just directed flow from the inlets of the cowl over the fins. Have a deflector in front of the opening on the bottom of the cowl.