Racer
Senior Member
- Joined
- Oct 9, 2006
- Messages
- 1,594
- Location
- Colorado Springs, Colorado USA
- Aircraft
- Air Command CLT N7512X
Here are some pictures of my Yamaha Genesis 120hp engine I installed in my Air Command.
The reason I chose this motor is there are so many things on this motor that come stock that I absolutely love.
This is a four stroke, water cooled, duel overhead cam engine with an excellent reliability and longevity record to back it up. The engine has a smooth wide torque curve that gives good even power without the unpredictable power band of a two stroke sled motor. This engine comes stock with a dry sump oil system and also has a divider in the center of the pan with two separate oil pickups, one on each side of the divider, that way it can still pump oil at a steep uphill or steep downhill angle. The oil pan is also "V" shaped so it can pickup oil even if laying at a severe angle in either direction, You almost cannot starve this engine for oil at any angle.
The crank shaft has a huge extra roller bearing at the end of the crank because in the snowmobile the variable clutch is supported and driven directly off the crank, It is beefed up a bunch.
This engine has altitude compensating carbs with coolant heat running through them to keep them from icing up. You can turn the coolant heat on or off manually. duel fuel pumps also stock.
It has a remote kill switch that you just hit down and it kills the motor, I mounted this on the opposite side of my gyro as the main ignition so now I can turn the gyro off from either side in case of an emergency.
I also have a digital dash that tells me everything from engine RPM, fuel level, to engine oil getting low, all engine warning signals etc. I can even get engine trouble codes. (Says on the trouble code now that my hand grip heat is malfunctioning)
For prop reduction I have a Rotax 3.0 to 1 "C Box" re drive on it with a new 68" Warp Drive HP-L hub and Prop blades on the way for it.
I have high hopes for this power plant but I must be honest with everyone, it was a big job transplanting this engine. Making a way for the C Box to attach to the motor in a strong way that will hold the power was a challenge. The flywheel I had to build to connect the engine power to the reduction box, the motor mounts and the exhaust system all cost me about $1,500.00 and I did most of the work myself.
Please note that I am not recommending, trying to convince, or trying to sell anyone on this engine, I am only sharing what I have done, that is all.
The reason I chose this motor is there are so many things on this motor that come stock that I absolutely love.
This is a four stroke, water cooled, duel overhead cam engine with an excellent reliability and longevity record to back it up. The engine has a smooth wide torque curve that gives good even power without the unpredictable power band of a two stroke sled motor. This engine comes stock with a dry sump oil system and also has a divider in the center of the pan with two separate oil pickups, one on each side of the divider, that way it can still pump oil at a steep uphill or steep downhill angle. The oil pan is also "V" shaped so it can pickup oil even if laying at a severe angle in either direction, You almost cannot starve this engine for oil at any angle.
The crank shaft has a huge extra roller bearing at the end of the crank because in the snowmobile the variable clutch is supported and driven directly off the crank, It is beefed up a bunch.
This engine has altitude compensating carbs with coolant heat running through them to keep them from icing up. You can turn the coolant heat on or off manually. duel fuel pumps also stock.
It has a remote kill switch that you just hit down and it kills the motor, I mounted this on the opposite side of my gyro as the main ignition so now I can turn the gyro off from either side in case of an emergency.
I also have a digital dash that tells me everything from engine RPM, fuel level, to engine oil getting low, all engine warning signals etc. I can even get engine trouble codes. (Says on the trouble code now that my hand grip heat is malfunctioning)
For prop reduction I have a Rotax 3.0 to 1 "C Box" re drive on it with a new 68" Warp Drive HP-L hub and Prop blades on the way for it.
I have high hopes for this power plant but I must be honest with everyone, it was a big job transplanting this engine. Making a way for the C Box to attach to the motor in a strong way that will hold the power was a challenge. The flywheel I had to build to connect the engine power to the reduction box, the motor mounts and the exhaust system all cost me about $1,500.00 and I did most of the work myself.
Please note that I am not recommending, trying to convince, or trying to sell anyone on this engine, I am only sharing what I have done, that is all.
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