Engine center problem
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Engine center problem
I placed an OS70 in my GP RV4 and find it is well right of center with the offset built into the kit.... I am looking for the best way to correct since significant shimmying might be in order. Any tricks on how to properly center an offset? The distance from Firewall to aft spinner is right-on but the offset is way off.
Thanks.
Thanks.
#5
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RE: Engine center problem
You best check the fit of the cowling before making any corrections. On mine, the front of the cowling is canted to give proper fit with the engine angle.
Les
Les
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RE: Engine center problem
With the cowl in-place, I have 1/2 inch right of centerline..... the correct thrust line appears to be set but the spinner will be out-of-center much too far.... I am guessing this is a typical problem with the OS70 on this plane. I will take the offset out and then have to use rudder to fly straight.... quite a shame.
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RE: Engine center problem
I believe to be geometrically correct where you have x degrees offset the vertical centerline moves a calculated distance the other way (left for right offset). This keeps the crankshaft centered in the vertical plane. I have the formula to calculate that somewhere around the shop - but God knows where. I will see if I can locate it this weekend.
Dan
Dan