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No the distance between frame 2 and the transom is 4 feet so the sheer change to the transom is very subtle. I modified the top of the transom and frame 2 for a more integrated 20" transom look, but didn't change the sheer position of frame 2 (see modified Zip transom post).

I am using Khaya mahogany and have read that it is dried without excessive heat so the lignan that bonds to the cellulose in the wood can be softened. It takes steam to do this, about 1 hour per inch of thickness. I watched a video of a shipwright who used polyethylene sleeving to steam the pieces h...

Increased radius bend, I went from 16"" to 17" so it should be easier.

Thanks for your comments/concerns, sent me scurrying to the garage this morning to make sure I hadn't messed up :lol: . My sheer is cut to size, but needs to be planed to 5/8". Was able to bend it around frame 2 and 4 to get these shots. The sheer only rises about 1/2" so the change is very subtle a...

I had my transom all fabricated when I decided I wanted to increase the tumblehome. I settled on taking 1.7" off each side. I also had concerns with the original radius that the side planking needs to bend around, so I made this more subtle. The shear ends up higher on the transom and forms more of ...

Hi all, thanks for your replies! I think I have put the cart before the horse in not explaining what I am up to, so I started another thread that better addresses the entire modification. I have added a gallery with some pictures that should be up shortly. My term boot should probably read vinyl sna...

As I started getting into my Zip build, I knew that I wanted a Mercury 50 HP Redband outboard (1968-1972) and that a long shaft would be easier to come by. It also leaves the door open for a newer 4 cycle outboard in the future. The long shaft modifications that I have seen don’t look totally integr...

When using a long shaft (20") motor on the Zip, the transom is 5" taller at the motor well location. Aside from using the motor well for strength, do people with this configuration see water coming over the transom or does it stay pretty dry except for splashing? Would a vinyl boot also do the trick?

Yes my understanding is 15" = short, 20" = long, 25" = extra long. They still make short available in modern engines, but only for the smaller horsepower motors like 25 hp.

Hi James, I am just getting to the point where you were 10 months ago. I wanted a long shaft motor because they are easier to find and also in the future it does not preclude using a modern 4 cycle engine if the boat is built correctly to take the added weight (typical 40 hp 2 cycle = 150 lbs, 4 cyc...

Thanks for the encouragement all! I worked in the computer industry for years, then a design for hire house where we design everything and anything. Still working there part time but I have time to start the build. I am used to long term projects, so not a problem. I enjoy the design and build phase...

I am a 63 old mechanical engineer that build a Glen-L Tiny Titan with my Dad back in 1967. I then got into cars and motorcycles once I got my license. Just finished building a Cobra replica last year, need another project, and wanted to get back to the boat I miss so much! But I need something more ...