Thank you very much for this!
Raisedeyebrows wrote:I have a set of the BB7 brakes on one of my bikes and although I'm a real dummy when it comes to properly adjusting them luckily I have a next door neighbor who has sold and adjusted a lot of them. He told me to carefully break in the rotors by repeatedly getting up to about 5-10 mph and brake firmly until ALMOST coming to a stop, then rinse and repeat about 20 times. I too had trouble getting them to let the wheel spin freely without a tiny bit of rubbing but after following his advise on the break-in procedure the rubbing went away.
...I got the Avid BB7s as a used pair of rotors, calipers, cables, etc, from a guy who posts here named Tom - his full posting name escapes me at the moment. I got the idea that maybe the pads were worn some, so I bought a new pair - just two since I only intend to run one of the calipers. So, given your input, I think I'm going to install the new pair in the front caliper first, then do this. But I'll dismount the caliper for now while I work out the brake lever system details.
Raisedeyebrows wrote:Good to see you've turned the corner to using disks, you're going to love it and I doubt you're going to have any problems with the rotors getting hot-unless you're going down a steep mountain pass braking constantly with a large amount of touring gear and you happen to weigh 280 lbs. If that happens get 203mm rotors-they dissipate heat better due to more surface area.
I can see here you're a big fan of disks!
In my experience with bike brakes so far, which does not include disks, the only really crappy ones are rim brakes with old, hard shoes on steel rims! Step up to Kool-Stops on those and they then fall into the acceptable category. Make it an aluminum rim with those Kool-Stops, and it's now in the pretty awesome territory! BUT, to my great surprise, the "OEM" shoes that came with my brand-new Origin8 set I put on this bike, mated with an AL rim resulted in braking that easily rivaled the Kool-Stops!
... Of course, I never bothered to try the new Origin8 shoes on steel rims!
Anyway, it's hard to imagine needing more than rim brakes on level ground. I haven't done a really heavy hill-ride in months due to my bum knee, but it's healing - I might be up for a good hill ride in the next week or three!
For the record, I'm a pretty big guy at 6'3", broad shouldered, etc., and typically turn the scales at 210 to 220, depending on the season. (I am taller in the torso than legs than the average guy, but only modestly so.)And, my bike has all this extra burden to carry - the big 12.76 ah battery, the TSDZ2 and the rear bike rack and basket probably having more mass than the whole rest of the bike combined! At some point, when I consider it "done," I'll weight it and me together - I'll just stand on a scale holding it in my hands. My wild bet is it'll be over 250, maybe over 270, especially including all the tools, spares, electrical extras and the front basket I'm planning. ... I'm a firm believer in taking vehicle measurements - like "curb weight" - including absolutely everything, as ridden / driven / flown / sailed, etc.
Raisedeyebrows wrote:With the dual brake system you definitely should be able to stop effectively, especially with the addition of the Kook-stops, they in themselves are very effective, have them on one of my bikes and they really grab nicely coming down monster hills at speed. Have fun!
I quite agree. ... With the dual fronts, I should be able to dissipate a lot of energy in a damned hurry if desired. Might even risk flipping over on the front wheel with them both in operation - a feat I haven't done since I was around 10 or 12 and don't care to repeat!
You talk about "203" mm rotors. ... Do these mount the same and use the same caliper but using a different caliper mounting bracket?
Raisedeyebrows wrote:Added:auto-correct always turns Kool Stop into Kook Stop, I'll just leave it since it always gives me a chuckle.
I noticed that! I also noticed that when just typing along, one can make the same typo since k and l are adjacent.
Meanwhile, in skimming over past remarks I notice that I might have given a mistaken impression about the color: I meant to say that I wasn't choosing based on color, just frame details and there really was no choice, but that I liked both the silver and this "smoke". The more I work with it, the more the smoke color is growing on me - purple as you call it! ...I kinda wish I had some rattle-can paint in that same color. If I did, I'd probably have some of the accessories painted in the same color, such as the rear rack. As it is, I think I'm going to just use either grey, when available, or silver / chrome / unpainted aluminum as accents. For example, I'm thinking I'll leave my front derailleur's mounting bracketry I made plain ole AL, though I'll paint it in clear to prevent oxidation.
Oh, and BTW, the 50mm long M5 button-head bolts I ordered for the front derailleur's mount have NOT been received and they are long over due!
... I'll have to follow up on that!