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-   -   YS 45 RF??? (https://www.rcuniverse.com/forum/glow-engines-114/8563023-ys-45-rf.html)

iflyg450 03-10-2009 11:36 AM
YS 45 RF???
 
I just got this engine off RCU, I was wondering what kinda of HP are we talking, what is a good prop, and what is a good header lenght. I plan on using a MACS 1250 pipe. The aircraft is a MK Arrow 40

SpeedBoy 03-11-2009 02:57 AM
RE: YS 45 RF???
 
1 Attachment(s)
I have been running YS 45 for more than 6 years , they are very powerful engines , not sure about the HP but with a 10x7 APC , macs quiet tuned pipe 7.5 cc and 10% nitro ( yes 10 % ) I'm getting 15,500 RPM on the ground , they run well with 10x8 APC (shaved ) and 20% nitro , but I haven't tach it with that prop.

If my mind is correct the length of the header is something about 4 1/5 " or 5 ".

UPSSS !!!!! sorry I missed the "RF" part , I was talking from side exhaust version . Probably not much difference between both but I just wanted to point it out . :eek:


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