bushong572

My Feedback: (59)

I have a 1/6 F-16 (31 lbs unfueled) that has a Jet Central 140n in it. I am very happy with the way the 140 pushes it around. I am building a F-18 (just a tad smaller and maybe 1 lb less) that I planned on putting a Kingtech 140n in . I would like similar performance to the F-16. My questions: Do you lose some thrust with a bifurcated pipe? Should I go to a 160n-180n on the F-18 because of the pipe?

Thanks

ravill

My Feedback: (11)

I've had quite a few F-18's. Charlies, Foxtrots and Echo's.

Which F-18 do you have? And who makes it?

The "smaller" C's will fly around ok with a 120N engine and better with a 140N engine. But if you have the bigger "supas" or want better vertical performance (like real 18's! LOL) 160+ all the way.

And yes, you loose power through a bifurcated pipe. Last time I read about power losses, they were in the 5-10%, but don't quote me on that please!

Good luck!

bushong572

My Feedback: (59)

Thanks for the reply.
It's a Fei Bao 1/8 F-18F (super).

It sounds like I need to go with a 160.

mongo

My Feedback: (15)

there is a K-160 or 180 in the classifieds here. guy in grandbury TX has it.

make that a K-210, the k-170 is in GA.

bushong572

My Feedback: (59)

I saw them. A 210 is too big and the 170 is propane. I've been looking for a good deal on a kero start 160 for a while.

Thanks

bidrseed2

My Feedback: (2)

I thought the thrust loss was greater than that. Back in the day, I thought I’d read a 120N straight pipe Eurosport performed like a 160N Eurosport with a bifurcated pipe.