My slightly bigger disc brakes came in today. 160mm vs 203mm discs.
Not to worry, the front is getting the exact same brakes. The main reason for the huge rotors is for sprocket, chain, and caliper clearance. The chain on the 40 tooth is going to create a potential contact point with the calipers, but it will hopefully be just close enough.
I am still going to have to space the rotor out, but with the new style of dual pull calipers I have, that has to be done anyway since the new caliper positions the pads further out than the original unit. Thankfully, I have a lot of room to work with on the brake side, so I actually think this will work out rather well.
You can also see in that last picture how far the caliper sticks in toward the hub. The new calipers I bought are a dual pull style instead of the single that the original units are, and as I mentioned previous the pad centerline is moved outward as well, but on top of that, they also stick inward less than the original units too.
So, my plan to to setup the bike and just start with the rear wheel and work my way forward. I plan to pull the rear wheel anyway to actually check the wheel bearings and make sure they have proper lubrication, it will be a good time to work on the rest of the setup. I just don't trust whomever assembled it.
The "OCC" sized sprocket hub adapter is sized perfectly for this bikes rear hub. My plan to hopefully prevent issues with slipping is to to key the surface of both the adapter and hub with a little sanding and then utilize some Loctite 638 retaining compound which has a shear strength over 4000psi and is also decently high temp and oil resistant. Thankfully this adapter is also machined properly and a nice snug fit with the hub, which will really help.
If you are thinking that the retaining compound won't be enough, I have watched that stuff hold a bearing race in place when the breaing locked on up an enormous 480V motor and ended up spinning the shaft on the inner race and wrecking it. It's some impressively strong stuff.
One nice thing about buying a cheap bike like this is my entire lack of guilt in buying cheap ebay parts to upgrade it. The parts on the bike are just as cheap and shitty
