RCU Forums

RCU Forums (https://www.rcuniverse.com/forum/)
-   Questions and Answers (https://www.rcuniverse.com/forum/questions-answers-154/)
-   -   Can I Raise The Height Of Engine?? (https://www.rcuniverse.com/forum/questions-answers-154/5294277-can-i-raise-height-engine.html)

Michden 01-20-2007 10:15 AM

Can I Raise The Height Of Engine??
 
Hi--I am building a Yak-18 military trainer 40 size ARF from Hobby People. Invert, 40 Magnum does not line up well with the fiberglass cowl. I would like to raise the engine about 3/8" --As it sits now to line up the center of the crank shaft with the hole in the cowl, the cowl has a downward slant looking from the side view and looks stupid. Side to Side is good. What effect will raising this engine- 3/8" -have on flight??

aerowoof 01-20-2007 10:31 AM

RE: Can I Raise The Height Of Engine??
 
when you raise the engine you also raise the thrust line,there may be a slight change in pitch control at certain power settings,probaly not even noticeable.

ho2zoo 01-21-2007 03:13 AM

RE: Can I Raise The Height Of Engine??
 
I have the same plane and did the same thing. Except I used an MDS .46 engine and re-mounted the engine mount to the firewall so that the engine would be upright instead of inverted. Knocked the blind nuts out of the firewall, filled the holes with hardwood, and redrilled the holes for the new mount position.

The plane flies very well. But I hate the stupid MDS engine! Runs too hot and surges back and forth. Need to replace it.

It is a good flying plane though.

pt19 flyer 01-22-2007 04:14 PM

RE: Can I Raise The Height Of Engine??
 
hi

when you raise the engine you will also have to adjust the fuel tank position to be centerline or 1/4 to 1/2 inch below needle valve for proper engine operation.

good luck and happy flying

pt19 flyer


All times are GMT -8. The time now is 08:59 PM.


Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.