Mounting 4 strokes inverted or sideways
02-07-2002, 07:54 PM
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Mounting 4 strokes inverted or sideways
Hello again to everybody, I have a question that I know somebody can answer. I have been flying RC planes since 1985 and just recently got my first 4 stroke engine, short of a problem with the muffler nuts, I love it.
I have a new Giant Fly Baby kit on the way and a new Saito 91 ordered for it.
My question is this, can the 4 stroke engines be mounted on side or inverted without any problems? Do i need to make any special provisions for fuel delivery or exhaust?
I feel rather dumb asking this after so many years in the hobby, but overlook my ignorance as I am new to 4 strokes.
Thanks in advance for your help.
I have a new Giant Fly Baby kit on the way and a new Saito 91 ordered for it.
My question is this, can the 4 stroke engines be mounted on side or inverted without any problems? Do i need to make any special provisions for fuel delivery or exhaust?
I feel rather dumb asking this after so many years in the hobby, but overlook my ignorance as I am new to 4 strokes.
Thanks in advance for your help.
02-07-2002, 10:08 PM
#2
Mounting 4 strokes inverted or sideways
MrTim;
They Only bad question is the one not asked! : )
4 Strokes, Saito, YS, OS etc. will all run just fine inverted or sideways.
Saito 90% I see other people fly are mounted sideways.
YS (5) I Fly are all mounted inverted.
OS I've mounted sideways, upright, and inverted all ran fine.
OS inverted took some work till I got it right but then it was just as reliable as any other engine I run.
They Only bad question is the one not asked! : )
4 Strokes, Saito, YS, OS etc. will all run just fine inverted or sideways.
Saito 90% I see other people fly are mounted sideways.
YS (5) I Fly are all mounted inverted.
OS I've mounted sideways, upright, and inverted all ran fine.
OS inverted took some work till I got it right but then it was just as reliable as any other engine I run.
02-08-2002, 02:20 AM
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Mounting 4 strokes inverted or sideways
Ihave a magnum 91fs mounted inverted in my flybaby and it runs just fine the only thing i did is put a remote glow plug so i wouldn't have to reach under the plane for the glow starter.
02-08-2002, 04:47 AM
#4
Mounting 4 strokes inverted or sideways
I have an OS FS-70 II mounted inverted in a World Models P-51 and have no problems at all with the running of the engine.
The only thing to be careful of is to turn the engine over a couple of times before starting it to make sure it isn't in hydraulic lock. Just in case some fuel has pooled in the head.
The only thing to be careful of is to turn the engine over a couple of times before starting it to make sure it isn't in hydraulic lock. Just in case some fuel has pooled in the head.
02-08-2002, 07:02 AM
#5
Mounting 4 strokes inverted or sideways
Same as experience as everyone above....running 3 four-strokes myself.
1-OS70 inverted.....no prob
1- OS120 inverted.....no prob
1 Magnum91 side mounted......no prob
Also have close friend running YS91FZ inverted...no prob
None of the above set-ups have any sort of on-board glow system.......no prob
1-OS70 inverted.....no prob
1- OS120 inverted.....no prob
1 Magnum91 side mounted......no prob
Also have close friend running YS91FZ inverted...no prob
None of the above set-ups have any sort of on-board glow system.......no prob
