Shop_Guy

There is no real technical name for rims that have been drilled or cnc'd. The tube will never come through the hole as long as you run the right rime tape for the size diameter wheel your buying or have. When it comes to tire pressure as long as you don't exceed the manufactures recommended high and low pressure you should be fine. Trials moves = low pressure usually 30-40 psi depends on your weight. street and urban park riders 60-80 psi depending on your weight. your biggest concern while spinning will be folding the tire over the rim and getting a blow out, but if you keep your psi at what you say you like it at your fine. Good luck!

Take all information as if your standing over the bike , so as not to cause confusion. the left hand cup ( non drive side) is better known as the "guide cup" at first you must only thread it in half way. Then begin installing the drive side, by installing the non drive side first you give the right side a guide so as not to cross thread the drive side. Install the drive side tight to the frame, as tight as you can manage then if you feel it needed get a cheater bar and give it that little extra. after the drive side is snug as can be finish installing the non drive side, so not over tighten if you have a plastic cup. Once this is all complete assemble the cranks onto the bike, tighten them to torque speck by your manufactures recommendation. grab both cranks and rock them to see if there is play, if not go ride it for a few minutes. Then re check for play, hopefully this has helped. A really good cleaner use white lightning able to be purchase in most bike shops. Also known as Clean streak or metal prep. make sure to remove all residue with a rag after doing this. If you find yourself unable to complete this task you might seek professional help as to not damage your bike. The bottom bracket is the heart of the bike if you damage it she wont run. good luck from Canada. Ben.

I currently run a reset titanium bottom bracket cost 108$ weight 221 grams including all the hardware 68mmx128mm so far no issues, seems pretty smooth bearing are user replaceable so it's fixable at home assuming you own a crank arm puller and bottom bracket extractor good luck