coker monster again. brakes and large wheel inertia?
02-12-15, 10:08 AM
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coker monster again. brakes and large wheel inertia?
still playing with the idea of modding a coker monster. i think i've decided on a sturmey archer 5sp hub (still working out gear ratios to decide if it's a good choice). they come in coaster, rim, drum and disc. yes i know a monster isn't going to be high performance bike, but i'd still like to make a good choice for braking.
i don't really want a coaster brake, because it might interfere with other ideas, and i'm not interested in rim brakes. for the moment i'm seeing a decent deal on a drum brake model, but wondering if discs would be best, since i can go with a larger rotor to compensate for the larger wheel (saw a 255mm that would be interesting). i can weld well enough to put the caliper where i need it. at this particular moment the disc model i'm seeing is a good bit higher than the drum (just roaming ebay).
i'm in no hurry, so i might find a better deal, but if i can't close that price gap, do you think i'd lose much braking power if i settled on the drum (the front will be disc also)? thanks for any help.
i don't really want a coaster brake, because it might interfere with other ideas, and i'm not interested in rim brakes. for the moment i'm seeing a decent deal on a drum brake model, but wondering if discs would be best, since i can go with a larger rotor to compensate for the larger wheel (saw a 255mm that would be interesting). i can weld well enough to put the caliper where i need it. at this particular moment the disc model i'm seeing is a good bit higher than the drum (just roaming ebay).
i'm in no hurry, so i might find a better deal, but if i can't close that price gap, do you think i'd lose much braking power if i settled on the drum (the front will be disc also)? thanks for any help.
02-12-15, 10:19 AM
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still playing with the idea of modding a coker monster. i think i've decided on a sturmey archer 5sp hub (still working out gear ratios to decide if it's a good choice). they come in coaster, rim, drum and disc. yes i know a monster isn't going to be high performance bike, but i'd still like to make a good choice for braking.
i don't really want a coaster brake, because it might interfere with other ideas, and i'm not interested in rim brakes. for the moment i'm seeing a decent deal on a drum brake model, but wondering if discs would be best, since i can go with a larger rotor to compensate for the larger wheel (saw a 255mm that would be interesting). i can weld well enough to put the caliper where i need it. at this particular moment the disc model i'm seeing is a good bit higher than the drum (just roaming ebay).
i'm in no hurry, so i might find a better deal, but if i can't close that price gap, do you think i'd lose much braking power if i settled on the drum (the front will be disc also)? thanks for any help.
i don't really want a coaster brake, because it might interfere with other ideas, and i'm not interested in rim brakes. for the moment i'm seeing a decent deal on a drum brake model, but wondering if discs would be best, since i can go with a larger rotor to compensate for the larger wheel (saw a 255mm that would be interesting). i can weld well enough to put the caliper where i need it. at this particular moment the disc model i'm seeing is a good bit higher than the drum (just roaming ebay).
i'm in no hurry, so i might find a better deal, but if i can't close that price gap, do you think i'd lose much braking power if i settled on the drum (the front will be disc also)? thanks for any help.
Rim brakes may be the best choice because you're not exerting more torque on anything that way.
02-12-15, 01:29 PM
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The torque differential isn't going to be much of a factor either way. You will have to squeeze the lever harder for the same stopping rate, but the total heat generated relates to the mass being braked (you and the bike) not the wheel size.
If you look at the coaster brake world, they normally used identical brakes on bikes from 16" to 26", so you should feel free to use the brake of your choice.
If you look at the coaster brake world, they normally used identical brakes on bikes from 16" to 26", so you should feel free to use the brake of your choice.
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02-12-15, 02:48 PM
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I'll add that the large rotor diameters make for far more disk rub potentials. Just ask any modern tandem team. But I do like keeping the disk size proportional to the tire diameter. Andy.
02-13-15, 02:28 PM
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Spoke fatigue may also be worse with such large rims and hub brakes.
