So its been awhile since I've needed to order a dual wall pipe. Now that Tam is out of business..(or so I heard). Where are you guys shopping.
I need a pipe for a 100n engine... however I also need it to be slightly smaller than the off the shelf sizes that you would get at Grumania. By that I mean they offer one pipe for 100n to 160N. Well I'm pretty sure if its good for a 160n then its way larger in diameter than is needed for a 100n.
Ideally I would like the outer pipe dia to be around 85mm or smaller if possible. I already have one that is 90mm.. but its tight

So.. What's a SMALL dia pipe that will work with a 100 and where to get it.

Thanks!

How about RC Pete in Toronto?

the jet central owners manual .pdf has a page with rating sizes and diameters for pipes for their motors, which should be rather across the board usable.

Didn't know Pete was still making them. Thanks Peter.

Thanks for the heads up mongo!

You can go smaller then the Jetcat chart. I run 40mm on "P20", even up to 35N. Jetcat says 45mm. I run 46mm on a 55N engine, Jetcat says 65mm for 60N....

I happen to just have tested a bifurcated thrust tube where I have a Kolibri T25 making 2.8kg, with dual 28mm outlets I got 2.25kg out, with dual 30mm I got 1.9kg. Bigger got significantly less(!) jetcat says dual 40mm?!....

With that said I can not help on a 100N engine, but smaller is usually much better and runs cooler. Even though you would guess the opposite.