drive shaft for a .45 engine...anyone..?
11-11-2007, 05:43 PM
#1
Thread Starter
drive shaft for a .45 engine...anyone..?
Howdy, several years ago I built a canard with a mid mounted Rossi.45 engine and a drive shaft to the pusher prop. Unfortunately the plane crashed before I was able to evaluate the drive shaft (see lousy b/w pics)
Now I would like to try the concept once more but before commencing I seek good input because drive shafts are NOT trivial.
A search on this forum came up with the following thread....
http://www.rcuniverse.com/forum/m_34...tm.htm#3432920
....but I wonder if there is more experience out there to gain....Thanks in advance...Cheers/Harald
Now I would like to try the concept once more but before commencing I seek good input because drive shafts are NOT trivial.
A search on this forum came up with the following thread....
http://www.rcuniverse.com/forum/m_34...tm.htm#3432920
....but I wonder if there is more experience out there to gain....Thanks in advance...Cheers/Harald
11-13-2007, 12:27 AM
#2
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RE: drive shaft for a .45 engine...anyone..?
Well I haven't seen any done that way . I suspect because even the tiniest propeller imbalance would be exponential
ly transfered to the plane. possibly a gear box set up would work tomove the motor forward or just rear mount the motor and balance with battery all the way forward???
ly transfered to the plane. possibly a gear box set up would work tomove the motor forward or just rear mount the motor and balance with battery all the way forward???
11-13-2007, 10:49 AM
#3
Thread Starter
RE: drive shaft for a .45 engine...anyone..?
OzMo, thanks for your reply and suggestions though I do not see why propeller imbalance would be any worse in this case. And why exponential..?
The main reason I would like to test the drive shaft concept again is because it puts the weight where it belongs - both engine and fuel close together at the C.G. - thus minizing turning forces when manuvering - e.g. spinning - the aircraft. Like in a sailing boat, the ends of the ship should be kept light...!
I know it is a bit unusual with drive shafts but that´s also an interesting challenge.....
....Cheers/Harald
The main reason I would like to test the drive shaft concept again is because it puts the weight where it belongs - both engine and fuel close together at the C.G. - thus minizing turning forces when manuvering - e.g. spinning - the aircraft. Like in a sailing boat, the ends of the ship should be kept light...!
I know it is a bit unusual with drive shafts but that´s also an interesting challenge.....
....Cheers/Harald
