Do I need a short cage rear derailleur?
03-24-09, 05:57 PM
#26
Cat 3 Meter - Don't Care
Thread Starter
If it makes you feel any better, Ben, the kid that was travelling with us over the weekend bent his derailer hanger warming up for the RR on Saturday. Raced the RR and the crit with crappy shifting. I think it mostly worked but would not go into all of the gears. Anyway, he got I think 7th in the cat 4 crit. So no excuses Nick!
[training]
03-27-09, 03:15 PM
#31
Cat 3 Meter - Don't Care
Thread Starter
So i figured out what's causing this problem. I played with it last night and as soon as I'm in the big ring up front and I shift up into the 19-20-21 range it sticks because the top jockey wheel on the rear derailleur is too far away from the cassette. I don't have this problem with the 12-26 because at that point in shifting the gears are obviously bigger. I guess this cassette just isn't made to be cross chained that much, well no cassette is but others seem to handle it better. Oh well the only way I figure I could get the jockey wheel closer is by adding more chain maybe which I don't want to do.
03-27-09, 03:50 PM
#32
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So i figured out what's causing this problem. I played with it last night and as soon as I'm in the big ring up front and I shift up into the 19-20-21 range it sticks because the top jockey wheel on the rear derailleur is too far away from the cassette. I don't have this problem with the 12-26 because at that point in shifting the gears are obviously bigger. I guess this cassette just isn't made to be cross chained that much, well no cassette is but others seem to handle it better. Oh well the only way I figure I could get the jockey wheel closer is by adding more chain maybe which I don't want to do.
03-27-09, 04:00 PM
#33
Cat 3 Meter - Don't Care
Thread Starter
I tried playing with the b tension it doesn't absolutely nothing, it doesn't even seem to move the derailleur. I took a look at the set up last night and watched it really carefully and it's pretty obvious that on those top gears that with the distance of the jockey wheel the change of movement in the derailleur just isn't enough to get it to switch. The problem doesn't happen when I'm in 39 just 53, I guess this cassette just can't handle the cross chaining.
03-27-09, 04:28 PM
#35
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I tried playing with the b tension it doesn't absolutely nothing, it doesn't even seem to move the derailleur. I took a look at the set up last night and watched it really carefully and it's pretty obvious that on those top gears that with the distance of the jockey wheel the change of movement in the derailleur just isn't enough to get it to switch. The problem doesn't happen when I'm in 39 just 53, I guess this cassette just can't handle the cross chaining.
Shift it into 21 and adjust the B screw while turning the cranks until the jockey pulley is as close as you can get it to the cog without rubbing. I would be surprised if this doesn't fix it because based on your description, this screams "B-tension problem." Of course, sometimes it's hard to diagnose these things over the internet.
03-27-09, 04:43 PM
#36
Cat 3 Meter - Don't Care
Thread Starter
There doesn't seem to be any jockey distance issue anywhere, just 19-20-21, maybe there's just not enough chain in the system to go 53-21 effectively that close to the hub.
03-27-09, 04:56 PM
#38
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Medium and long cage work better for compacts and triples, where there is a huge in gearing.
My short cage just barely cuts it for my 50/34 and 11-26 combo. The chain is barely long enough to get into the 50x36 and pretty damn slack in the 34x11.
(PS- I know you never use those gear combos, but you should be able to get into them with the drive train still operating properly).
The long cage basically lets you run a longer chain.
My short cage just barely cuts it for my 50/34 and 11-26 combo. The chain is barely long enough to get into the 50x36 and pretty damn slack in the 34x11.
(PS- I know you never use those gear combos, but you should be able to get into them with the drive train still operating properly).
The long cage basically lets you run a longer chain.
03-27-09, 05:43 PM
#41
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03-27-09, 09:10 PM
#42
well hello there
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Not to pile on, but I can't even imagine having this type of reaction to someone's derailleur while in a paceline.
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03-27-09, 09:35 PM
#43
Cat 3 Meter - Don't Care
Thread Starter
Man if I followed the general thought process of people in the road cycling forum I would have been laughing at my buddy for running too many spacers on his new look 585. Thankfully I was too busy trying to keep up while he dropped everyone he came in contact with. This forum cracks me up sometimes, I think I'm going to post everything in the racing sub forum now.
