Sport 40 engines

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musk-rat

Well-Known Member
Joined
Nov 29, 2005
Messages
128
Hello,

I have been searching the forum, but have not find what I have been looking for. What are some good engines for the Sport 40 class? Is the OS .46 legal for the IMPBA class?

Thanks,

Tim
 
Hello,

I have been searching the forum, but have not find what I have been looking for. What are some good engines for the Sport 40 class? Is the OS .46 legal for the IMPBA class?

Thanks,

Tim
The IMPBA D Class is from 0.301 thru 0.458 which is the 7.5 CC Class and the OS .46 VXM is 0.455 or 7.45. So yes it is legal in Sport 40.

I am hearing that the A/A 45 is a great motor so look into that as well if your budget allows. Al Hobbs is the man to see for the A/A and he is on IW.
 
Hello,

I have been searching the forum, but have not find what I have been looking for. What are some good engines for the Sport 40 class? Is the OS .46 legal for the IMPBA class?

Thanks,

Tim
Tim, At our club we run Mac, Cmb hr & rs but the new AA and CMB Vac should be great also. Scroll down the sport and scale forum to see a video of Robs spt 40 with the AA motor. Parts from the AA motors will interchange with the Mac motors-Al Hobbs is the MAN!

Glenn
 
Put a redhead CMB hr in it, and a AB45 parabolic pipe set at 9 3/4 in, and a x648 2blade prop, 50% nitro Technology fuel,and HOLD ON.....................
 
Last edited by a moderator:
Hello,

I have been searching the forum, but have not find what I have been looking for. What are some good engines for the Sport 40 class? Is the OS .46 legal for the IMPBA class?

Thanks,

Tim
Tim, At our club we run Mac, Cmb hr & rs but the new AA and CMB Vac should be great also. Scroll down the sport and scale forum to see a video of Robs spt 40 with the AA motor. Parts from the AA motors will interchange with the Mac motors-Al Hobbs is the MAN!

Glenn
Al Hobbs is gonna be the guy responsible for keepin ol MAC motors ALIVE& runnin...as a Mac 45 owner, i VERY MUCH appreciate it Al! If i ever destroy my 45 Mac, i will be callin Al! :)
 
Hello,

I have been searching the forum, but have not find what I have been looking for. What are some good engines for the Sport 40 class? Is the OS .46 legal for the IMPBA class?

Thanks,

Tim
Tim, At our club we run Mac, Cmb hr & rs but the new AA and CMB Vac should be great also. Scroll down the sport and scale forum to see a video of Robs spt 40 with the AA motor. Parts from the AA motors will interchange with the Mac motors-Al Hobbs is the MAN!

Glenn
Al Hobbs is gonna be the guy responsible for keepin ol MAC motors ALIVE& runnin...as a Mac 45 owner, i VERY MUCH appreciate it Al! If i ever destroy my 45 Mac, i will be callin Al! :)
You won't .
 

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