Morning Nic...
Looks like your on your way to making progress. I use 30min Z-Poxy on a lot of the mounting and gluing of the various components in the boat such as the motor mounting plate, servo ply plate, stuffing tube (with west system filler additive), battery trays...etc. I also use the West System epoxy with 205 hardener with a bit bigger jobs like coating the tub sections or coating other wood parts where I can use the full amount of epoxy that the West System pumps put out. The Pump systems for West System are great....they measure out the correct amount each time the pump is fully depressed. The bad thing is that if its a small job you will be wasting a lot of good epoxy. So you have to plan well in advance so to eliminate as much waste as possible. I have been using Z-Poxy for quite some time on aircraft also and it has worked very well. You can also thin it down if needed with some denatured alcohol for coating purposes. I only use 5min epoxy or JB Weld in areas that are not high stress areas but have good bonding qualities to other epoxied or fiberglass surfaces.
It appears that the bottom of the hull is pretty well reinforced with the foam core and all. On my wood build I used just some light glass cloth on the motor mounting plate and over the stuffing tube and the hull bottom is only 1/16". Its actually quite strong. Now I did add some carbon fiber in the rear section for the strut mount to help reinforce that whole area.
I had tried to bend the stuffing tube with a tubing bender and I did not like how it came out. It left small little ridges in the tubing and I figured that was just more surface friction on the shaft. So I cut another piece of 5/16 and bent it by hand. You will be surprised on how easy it will bend in your hand. Not much force needed at all. TAKE YOUR TIME!....LOL Insert the straight 5/16 into the 11/32 log tube within 1/4 inch of the motor shaft coupler and have your shaft strut inserted to the appropriate height. [Mine was at about 1 1/8" from the bottom of the boat to the bottom of the strut, but confer with Phil on this particular boat]
Then mark the stuffing tube exiting the log tube below the boat on where you want to start the approximate bend to make a gradual bend that will meet on a straight line to the strut. Bend a little....fit, Bend a little and trial fit until it fits perfectly for you. It was actually quite easy. No Heating is necessary.
Hope this helps..
Mike
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