VVRC 40 Twin Props

[Ohio AV8TOR]

That looks nice Tim. Can't wait to hear ah see your video.

 

[Ohio AV8TOR]

@SupaTim I don't see this listed yet on your site, has a cost been established yet?

 

[SupaTim]

Had a guy ask somewhere else so here's the graphic that explains the drop. It is 25mm from the flange to the top of the exit (would be 37.5mm to center of the exit.)

Bolted up the ProFlow small smooth pipe and was stoked to see how much more power I got out of the little 40! Picked up about 700rpm more than stock muffs and Pinnacle canister!! I've got my eyes on a certain Dec release 30cc plane that'll get a 40 twin with the pipe as well as a 21x8 Mejzlik...

 

[Alky6]

Very nice! Awesome news on the smooth pipe. Thanks for the update!
-Paul

 

[SupaTim]

@SupaTim I don't see this listed yet on your site, has a cost been established yet?

Not my "department" but when they do get them online, my guess will be only around $50 for the header and another $6 for the coupler and clamps. Haven't heard about drop spacers yet though but can't imagine they'll be more than a couple bucks.

 

[Ohio AV8TOR]

Good stuff @SupaTim , thanks for the update. Awesome on the 700 rpm gain.

Would you please confirm something, the small ProFlow smooth pipe has an inlet of 7/8" and I thought your header was reported as 1" diameter.

Have you weighed everything to see what the net gain is over the stock muffler?

 

[SupaTim]

Hmm, I'll look at it tomorrow. It's whatever Dave sent me 6 or so months ago. Haven't weighed anything as the dramatic increase in power will easily outweigh the little weight a pipe and mount will add.

 

[SupaTim]

Would you please confirm something, the small ProFlow smooth pipe has an inlet of 7/8" and I thought your header was reported as 1" diameter.

25mm

 

[SupaTim]

Regarding weight, here we go...

Stock exhaust: 4oz.


Header with clamps, coupler, and medium mount for either pipe or canister: 6.1oz.


Pinnacle medium canister: 9.2oz


ProFlow small pipe: 9.6oz


Soooo, a basic 2 in 1 header/canister/necessary mounting hardware will be 11.3 oz or 11.7oz with the pipe.

 

[Ohio AV8TOR]

25mm

View attachment 4121

Thanks Tim so that must be a medium size smooth pipe from Planebender because the small is 7/8" diameter. Much appreciated for checking and on the weight.