I was remodeling my electric skateboard and bought some new parts. Those pulleys, those bogies (https://smile.amazon.com/gp/product/B00NY3Q5Q8/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1) and those motor mounts (https://smile.amazon.com/gp/product/ B073C6TJC5/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1) will see their reviews in their list. In any case, these pulleys worked very well. They were an upgrade on my plastic and were great value for money. Easy to mount on a wheel, but it proved a bit tricky to get perfect spin without wobbling, after all they don't really have to be perfect anyway. Also, don't over-tighten them or you'll start flexing the little plate that's attached to the outside of the wheel and make sure to tighten it a little at a time by sliding back and forth between the plates jump over here so that it is evenly tightened. There was a slight tolerance problem when installed in trucks. Inside, on the roll, only barley fell on the cart. It wasn't a big problem, but if you have a Dremel you can use a file as well. If using a Dremel use WOOD bits, aluminum is soft and clogs other bits. After removing a small amount of material, they rolled without any problems. Well, that was until I installed the motor mount. That little wobble I mentioned earlier caused a small problem here. After everything was tightened, the pulley lightly touched a bolt. If you have this problem that you may not have, there are several ways to fix it. You can pull the dremel back out, try moving the pulley mount on the truck a little more if you can (which I couldn't), or do what I did and just add another shim to the truck for a little more to make space. although it worked out great in the end.
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