First eSk8 Build - eMTB
Wanted to make a city cruiser with 8 inch slick pneumies for lower rolling resistance and to be able to roll over cracks, sticks, etc. Got inspired after seeing some great eMTB builds here. Going with VESCs (when they arrive) and probably 10S LiPo set up for now. Started by making a Trampa-like deck using CNC machine. Used a piece of cherry that was laying around and fused it with some birch? ply for the curved risers. Used to have an old school G&S solid wood deck; I guess that’s why I’m going solid here. Not intending this for jumps or anything so don’t care about flex or curvature. Just city cruizing.
Cherry center. Cut our some “fingers” using CNC joinery techniques (curved inside corners).
Ply cutouts. Didn’t have single ply veneers so had to go with triple ply. Laid out so the 2/3 of plies had grain going with bend. Wasn’t sure at this point if this would work or if it would be strong enough.
Glued top ply piece (no fingers) on cherry edge.
Glue up on one side at a time.
Using a couple clamps allowed good control of the curvature. It also gave control along X and Y. Didn’t have time to create a form. This method turned out to work quite well. Added more clamps to make sure plies were well connected to each other.
Both sides glued up.
Bottom. Added some channels for light weighting. Forgot to zero bit so channels are deeper than planned. Looks to be okay though. Feels strong enough (did a couple short test rolling rides with no motors.) Might make channels circular next time and see about putting batteries in them. Still needs a coat or two of polyurethane.
With wheels and trucks.
Box o’ parts. Still waiting for VESCs. Bought a coulometer on eBay. Updates to come. Can’t wait to get this thing motorized.