So I want to convert this bike, which currently is a single speed with a coaster brake, to a bike with an internal gear hub (7 or 8 speed) and disc brakes. Here are the specs:
Frame: HandCrafted 4130 Chromoly Steel and 1x H2O boss, Rear rack mounts, rear fender mounts
Fork: Dura Forte Chromoly Unicrown with Fender Mounts, 1" threaded steerer
Stem: Aluminum alloy Threaded, 1" quill
Handlebar: Aluminum alloy Comfort Swept-back
Brakes: Rear Coaster Brake (pedal backwards for braking)
Hubs Front: Aluminum ALLOY SILVER NUTTED
R/HUB: SHIMANO COASTER CBE110
Rims: DA17, Aluminum ALLOY SILVER, 700c with 36 holes
14G STAINLESS Spokes W/BRASS NIPPLES
Crank LSC 44T Chainring, 170MM Aluminum ALLOY SILVER Arms
Cartridge Bearing Bottom bracket
Tires: Kenda 700x32C BLACK wall
And because pictures sometimes help:
My question is, what all will I need to do to convert this bike to disc brakes? I could deal with just the front being disc and the back being either a drum brake or rim, if the rear conversion would prove really difficult/expensive, but would prefer both front and back being disc.
What I think I know so far is: For the front, I will need a disc compatible fork (with a 1" threaded steerer??), disc compatible hub, and of course, the brake components themselves. However, I don't think 1" threaded steerer forks for disc exist (I can't find any, anyway) so what would I need to do to make this work? But a new stem, headset, what size, etc?
For the back, I thought I just needed a disc compatible hub (I was going to get the Sturmey Archer internal 8 speed) and the brake system. However, seeing something on the interwebz made me think I might need disc brake tabs on the rear dropouts/seat-stay/chain-stay intersection too. Is that true? Will it even be possible to use disc brakes on the back without being exorbitantly expensive? If it would be a huge hassle and cost me an arm and a leg, I'll just do a drum or rim brake in the back...so how would I convert from a coaster brake to that?
Thank you all for your help!