| Welcome to The New Coffee Room. We hope you enjoy your visit. You're currently viewing our forum as a guest. This means you are limited to certain areas of the board and there are some features you can't use. If you join our community, you'll be able to access member-only sections, and use many member-only features such as customizing your profile, sending personal messages, and voting in polls. Registration is simple, fast, and completely free. Join our community! If you're already a member please log in to your account to access all of our features: |
| Hey Aqua! | |
|---|---|
| Tweet Topic Started: Aug 3 2010, 06:48 PM (245 Views) | |
| Mark | Aug 3 2010, 06:48 PM Post #1 |
|
HOLY CARP!!!
|
Picked one of these up today. ![]()
|
|
___.___ (_]===* o 0 When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells | |
![]() |
|
| John D'Oh | Aug 3 2010, 07:34 PM Post #2 |
|
MAMIL
|
I wouldn't park my tool in that, ta very much. |
| What do you mean "we", have you got a mouse in your pocket? | |
![]() |
|
| Aqua Letifer | Aug 3 2010, 08:51 PM Post #3 |
|
ZOOOOOM!
|
Somebody's getting serious! Mark, that's awesome, man. A note on tools: Park Tool's an awesome company. They make pretty much everything you'll ever need. However, like a lot of other industries, when you buy multi-tools, the more versatile the multi-tool, the more mediocre a job it does in all of its applications. There's a happy medium between the 40-tools-in-one P.O.S. and the badass BMX chain link adapter you never, ever use. |
| I cite irreconcilable differences. | |
![]() |
|
| Mark | Aug 3 2010, 11:15 PM Post #4 |
|
HOLY CARP!!!
|
Just got done adjusting my daughter's 21 speed. The front derailleur cable was way too loose. High & Low Limit looked good. Shifting good overall but the rear jumps up to the 5th gear (larger) when you click once for 6 from the smallest gear (7) then it almost immediately returns to 6 and stays there. Shift to 5th gear it momentarily jumps to 4th then it returns to 5 and stays there. H & L Limits look good as does the shifting going from largest to smallest. No jumps at all. Now, here is the weird part. It does it more than not but not every time. Also the time spent in the wrong gear is longer sometimes than others. |
|
___.___ (_]===* o 0 When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells | |
![]() |
|
| Aqua Letifer | Aug 4 2010, 06:51 AM Post #5 |
|
ZOOOOOM!
|
Forgive me if these questions seem n00bish to you but hey, not everyone knows this stuff so don't be offended. ![]() Do you know about cable crossover? How it's bad to be in the smallest gear in the front, and the largest gear in the rear and vice versa? That can cause the kinds of problems you're describing and some folks aren't shown proper shifting methods, so I figured I'd ask. Also, just to get it out of the way, the cardinal rule of adjusting the rear derailleur is, make sure your derailleur hanger isn't bent. Doesn't sound like it is here but that's just a heads up. It's gotta be straight as an arrow or your gears will slip from time to time, and you'll be fighting your shifters. Assuming it's neither of these things, it most likely isn't in the limit stops in the rear; doesn't sound like that kind of problem. You may have to play around with the indexing adjustment (which is where about 80% of these problems lie, assuming the derailleur hanger's not bent.) If you want to try totally recalibrating your indexing adjustment, try this: 1. In the rear, shift to your smallest sprocket, and make sure your shifters are set up so that the cable is as loose as it could be. 2. Click the shifter just once and turn the pedals forward. If the chain didn't make it to the next smallest sprocket, the cable's too loose (which it should be, if you loosened it up as far as it's able to go.) Turn the adjusting barrel (the thing by the cable housing near your rear derailleur) counter-clockwise, a half turn at a time. (Most people neglect this, go too far, and then dance back and forth. This will cause the middle gears to work "okay," but the extremes to slip or be messed up.) 3. Once you've found the appropriate tension to make it from the smallest sprocket to the next smallest, go up one more and repeat. You shouldn't have to do much of anything after this point, but you might have to make VERY slight adjustments to the adjusting barrel to really get it tuned in. |
| I cite irreconcilable differences. | |
![]() |
|
| Mark | Aug 4 2010, 09:05 AM Post #6 |
|
HOLY CARP!!!
|
NP! I am a noob! ![]()
Yep! I know about that.
It does not appear to be bent or damaged in any way.
I will give this a try and let you know how it goes. Thanks man! |
|
___.___ (_]===* o 0 When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells | |
![]() |
|
| Mark | Aug 4 2010, 10:24 AM Post #7 |
|
HOLY CARP!!!
|
Working great now! Thanks Aqua!
|
|
___.___ (_]===* o 0 When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells | |
![]() |
|
| Aqua Letifer | Aug 4 2010, 10:29 AM Post #8 |
|
ZOOOOOM!
|
W00t!
|
| I cite irreconcilable differences. | |
![]() |
|
| Axtremus | Aug 4 2010, 10:38 AM Post #9 |
|
HOLY CARP!!!
|
Guys, just idle curiosity on my part now that you're talking about bicycle gear shifting ... what are you thoughts on CVT on bicycles? See any adoption by cyclists? |
![]() |
|
| Aqua Letifer | Aug 4 2010, 10:47 AM Post #10 |
|
ZOOOOOM!
|
Eh, at least for right now I don't see the need, and there would have to be some serious R&D developments to make it worth anyone's while beyond just a novelty. One of the reasons bikes still use a chain is that you can break a chain and reform it perfectly with simple tools. This is important because the chain is actually looped to the drive side chain stay. ![]() If you want to replace your chain, you have to break it first using a chain tool. There are some belt drives out now, both single speed and some with gears. They ride smoother and quieter than a chain, don't have to be lubed but notice where the chain stay converges with the seat stay: ![]() Since you can't break the belt with this kind of bike, there needs to be a removable plate in the frame itself to remove and replace the belt. This is freaking cheap and only works with cruisers, you can't do this with any serious terrain or road bike. Also, the ones with gears have an internal hub shifting mechanism, which sucks ass. At this point, CVT is not only unnecessary but seriously inferior to chain-and-sprocket transmissions. |
| I cite irreconcilable differences. | |
![]() |
|
| Axtremus | Aug 4 2010, 06:11 PM Post #11 |
|
HOLY CARP!!!
|
Thanks for your insight on CVT in the bicycle world, man. In other news, biking is now a well-disguised scheme that aims to covert an American city into a UN community: http://www.huffingtonpost.com/2010/08/04/dan-maes-colorado-guberna_n_670479.html
|
![]() |
|
| « Previous Topic · The New Coffee Room · Next Topic » |











4:23 PM Jul 10