AllanU

I have been running Nelson short stroke in Q40 and have heard that you can get increased performance out of a short stroke by running the long stroke muffler and prop the motor like a long stroke (7.4 x 7.5). I hear it provides slightly better power than the normal short stroke, but below what the long stroke puts out. Has anyone comments on this or tried it?

Al

s-10promod

It helps, but use a 7.4x7.7

fizzwater2

My Feedback: (61)

Eddie - in this this pea soup we call air in Kansas, what would be a decent prop for a SS Q40 with SS muffler?

Seems like I have one now..

blindfaithnogod

7.4x8.0 is what i've been using

daven

My Feedback: (1)

I always liked the 7.4 x 7.8 with the short stroke, but they do vary, so you try several.

s-10promod

I'm with Dave on this one, I had better luck with the 7.8. I think Paul's SS is stronger that the one I run with a SS muffler.

Randy Smith

Hi Al,
Ted Ellefson was running the LS muffler on the SS Nelson just today at the field. It seemed to be running well. He was running a 7.4 x 7.6 prop but we told him to go to the standard 7.4 x 7.8 SS prop.
I think it will perform better. It's worth a try. You should try it in Calgary at our races.


Randy