Engine Weight Comparison
 

Hello All,

I am in the process of repairing my brothers' US60 from a minor mishap. the plane currently has a K&B61 with a Perry pump that has a leaking diaphram. I know I can send the motor off to get another diaphram put in it, but I am considering getting an OS75 and putting it in the plane as an early christmas present. What I need is the weight of both motors including mufflers so I can determine how much lead I need to remove from the nose of the plane (assuming the OS is heaver than the K&B, which I am almost positive it is). Any help will be greatly appreciated.

Thanks:D

RE: Engine Weight Comparison
 

Tower lists the weight on their website also if you look here under user reviews at the top pf the page you can find that info.

RE: Engine Weight Comparison
 

Not sure of the weight of the OS 75.
OS61FX one pound 8 ounces with muffler
K&B 61 with twist on head one pound 3 ounces with muffler
K&B 65 Sportster one pound 4 ounces with muffler

RE: Engine Weight Comparison
 

OS75ax is 26.5 oz with muffler according to Tower

RE: Engine Weight Comparison
 

Thanks for the help everyone. Looks to me like the OS75 will help me in two ways. First it make the plane really haul, and second, it will let me take some of the lead out of the nose!:D