YS160 Power Issues
06-15-2010, 05:29 PM
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YS160 Power Issues
My YS160 (Mej 19x8 prop) used to happily sit in a 74" EF Yak, loads of power and vertical performance.
Had to go away for a check up (bearings and crank replaced, plus tuned) after the Yak went in and it now resides in my Capiche 140. 3 people had now flown it and everyone commented how it runs out of power when climbing. Stuck a tacho on it this afternoon and its come back at 7800. Looking on line and back through previous posts i reckon it should be up around 8600-8800.
Its been suggested i'm possibly running the wrong prop (told to try a 17 x 10)but like i said it was really happy on the Yak. Both models are similar weight so takes that out the equation.
Any help appreciated.
Gary
Had to go away for a check up (bearings and crank replaced, plus tuned) after the Yak went in and it now resides in my Capiche 140. 3 people had now flown it and everyone commented how it runs out of power when climbing. Stuck a tacho on it this afternoon and its come back at 7800. Looking on line and back through previous posts i reckon it should be up around 8600-8800.
Its been suggested i'm possibly running the wrong prop (told to try a 17 x 10)but like i said it was really happy on the Yak. Both models are similar weight so takes that out the equation.
Any help appreciated.
Gary
06-16-2010, 08:14 AM
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RE: YS160 Power Issues
quite a few.
be real pi**ed if it does as its just come back from being repaired and it was serviced at the same time!!
be real pi**ed if it does as its just come back from being repaired and it was serviced at the same time!!
06-16-2010, 09:44 AM
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RE: YS160 Power Issues
Other thoughts are that it could just be a tad lean on the HS needle.
If it's just a bit lean, the response will be great but it will sag to lower RPM's as the cylinder heats up rapidly.
Try a slightly richer setting and see if the top end climbs some.
If it's just a bit lean, the response will be great but it will sag to lower RPM's as the cylinder heats up rapidly.
Try a slightly richer setting and see if the top end climbs some.
