Originally Posted by
trapper7
Thanks for the feedback-the aluminum appears to be 1/16" so I guess we will consider what to do there. For pylon/engine position it would be easy to slide the engine mount further back. With engine and boat we are at 5 lbs.
Yeah, I would step the aluminum up to 1/8" which will add some weight, but I assure you it's worth it. My little .35 on my SI3 mini cracked the 1/16" aluminum within 6-7 tanks of fuel. If your prop is out of balance, it could happen sooner. I suggest being better safe than sorry.
5lbs is great. Hopefully it doesn't get too much heavier once fully rigged. A .40 will be good for reasonable performance up to about 6.5lbs. Above that, you might need to step it up to a .60.