Premium DIY Electric Skateboard Motor Mount (Caliber II Truck Compatible)

The mount is very nicely made, however there are a number of issues that make this not workable:1) the mount is next to impossible to get colinear with the axel, what this ultimately means is that the motor pulley doesn't align with the wheel pulley and so the belt tries to drive either into the wheel or off the pulley itself2) stock caliber trucks don't have long enough axles to accommodate a wheel with a pulley attached. You can try to hollow out the pulley so it sits over the aluminum truck, but then the belt tension will twist the bearings in the wheel and cause a ton of friction and ultimately bearing failure. If you're set on making it work, you'll need to cut away some of the truck to expose more of the axle, which is doable but certainly not easy. Unless you have access to real machining tools, I'd suggest staying away from caliber trucks to do an electric skateboard build.

Mounts work well. I did a rebuild on my electric board and ordered these mounts, these pulleys (https://smile.amazon.com/gp/product/B07FCVY4SF/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1), and these trucks (https://smile.amazon.com/gp/product/B00NY3Q5Q8/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1). See those listing for my review on them.Anyway, the mounts worked nice. I ended up purchasing 2 of the 50 and 63mm ones because I was unsure which one I needed. The mounts are the same size with the only difference being the distance between the actual motor mount holes. I forgot to take a comparison photo with the actual measurements of them because I could not figure out where the 50 and 63mm actually came from. From memory the 50mm, which ended up being what I needed, had hole mounts about 26mm or so from center to center.The kit is good and comes with all the allen keys that you need to set it up. They fit the trucks I got perfectly, not sure why that one other review said they don't. The trucks tapper off as you get closer to the axial so I bet he did not slide them on all the way. The one issue that came up was that with the pulley I had just slightly hit one of the mounting screws. I ended up just adding another washer to give everything the clearance it needed. See my review on the pulley for more info. Another note is to use loctite (the blue one) when putting everything together. This not only makes sure the screws done back out but also give a little bit of lubrication when tightening everything down. This lubrication was needed to get the one big screw tight enough to hold onto the truck without moving.In the end all the parts worked together. It is no a DIY board unless you need to make some tweaks yourself.

I'm seeing a few people complain about the size of the mount, but it's really the best option.I would rather have the D-clamp be just slightly too large and use a shim instead of it being too small and forcing me to grind down my trucks to fit. If I had to guess, there's approximately 1mm of difference between the truck and the mount.In order to properly mount it, I've placed a sliver of heat shrink between them to make sure the mount is tight when sitting on the truck, then I screw the tightening bolt to keep it completely immobile. Overall, this mount is basically the same as one you would buy from any of the DIY skateboard suppliers, the only main difference is the curved shape of the mount.(There's another review on here with photos where it looks like the truck is about half the size of this mount, and I can only say that that person probably bought the wrong trucks)

The material and density of the metal composition could be improved. My mount snapped causing a misalignment with my motor and gearing roughly 10 miles in.I almost ate it as I was going half throttle and all of a sudden carnage. It was scary and I almost lost my balance.Buyer beware.

Please do not buy this product it's expensive I prefer something that would not break in two days it did not stand up to anything the screws are not a good fit and it literally broke the mount to the engine my engine fell off and I paid $150 for my engine and my engine broke cuz I dragged it when I couldn't stop was one of the scariest things that has ever happened to me

Really well built clamp. Put it on a Caliber CAL5010-MIDNIGHT GREEN truck. Needed to use my dremmel to slightly grind out the rounded surface in the clamp(~0.5mm), but this wasn't a Cal II truck.Dont waste your time with that other clamp that has the three set screws...just get this one and buy some Caliber trucks. You will be happy you did!

Good motor mount kit for my 50mm motor but only complaint is that the clamp is a little too large making me have to really crank down on the clamp screw which can be pretty hard.

After roughly 80 miles of riding, the mount broke and snapped.EDIT: while it did break, their customer service is amazing and shipped out a replacement part immediately for free!