Fiveniner, look at the pictures of teh Jabiru2200 mount and it is evident that there is definitely space for the extra two cylinders of the 3300 keeping the same distance from the firewall to the prop. To do this you will shorten the mount as Oren mentions but you are also adding another 20-30 pounds to the nose.
So what you have now is an even more nose heavy plane. The firewall is about 45" from the datum and even if you add a 25lbs weight at 40" from the datum corresponding to the 3300'd added weight the CG worsens from 78.8" for 2200 to 77.5" for 3300.
Again, to me the engine mount needs to take care of the W&B on paper first, once that is in place you calculate what your firewall can support and then once you are satisfied going back and forth with these two considerations......make the engine mount. Just my 2 cents worth!
I hope this helps as this will decide between a safe plane and a hot rod!
Rahul
Quote:
Originally Posted by FiveNinerTIM
There is mention in the KitPlanes Dec 2011 article that the Jab 2200 was located 4 inches farther forward than ideal for W&B to allow the same cowling to be used for a follow on Jab 3300 installation.
(dont mean to get thread off topic- but refers to prior response on Jab 2200 W&B)
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