Bicycle Mechanics - slipping ACS Claws ss freewheel
Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.
09-01-09, 10:44 PM
Just put one of these on my bike today. http://shop.vendio.com/benscycle/item/965859472/index.html
Anyone have experience with this brand and model?
I greased the threads, used the appropriate Park tool and tightened it down quite snugly with a huge wrench. And then took it out for a test ride. It slips whenever I really step on it. And it continued to slip for the entire 20 min test. I had a neighbor/mechanic verify it. There are two variables however, because I mounted it to a brand new rear wheel with Formula f/f hubs. But I don't see the hub causing this - just want to mention for completeness.
Are these ACS freewheels sensitive to chain tension? My cottered crank is not completely round, so at two points in the revolution, the chain is a bit tighter, but it doesn't seem excessive. Oh yeah, and I'm using a SRAM ss chain, that works with 1/4" cogs, but this is a 3/32" freewheel. Is that mismatch important? I'm thinking it is a defective freewheel, but maybe someone can enlighten me.
Btw, I've used a Shimano SF-MX30 ss freewheel, and a Dicta, so I've successfully installed these brands before, and put plenty of miles on them without a problem.
09-01-09, 10:49 PM
It's slipping because you didn't tighten it on enough on initial installation (nor do you need to). Not noteworthy or even interesting. You'd be hard pressed to put more torque on a freewheel installation off the bike then you can while you're riding it.
That's assuming "slipping" means the entire freewheel is slipping on the hub and no that it's freewheeling forward by itself or that the actual chain is skipping over the freewheel (which indicates other things).
If you're putting a new freewheel on a worn chain, it's entirely possible for the chain to be skipping, also not surprising.
Please be more descriptive if you want help.
09-01-09, 11:28 PM
Hmmm, it's a new chain, and no it's definitely not skipping. It's not freewheeling forward either. With normal pedaling pressure, everything is fine. But when I start out, or stand on the pedals, it slips. I understand what you're saying, and figured if it were slipping/tightening on the hub that it would eventually stop after a 20 min ride, but it didn't.
So no, I didn't mean the freewheel was slipping on the hub, I meant internally. That's why I think it may be defective.
Btw, this symptom did not appear with my other ss freewheels, one of which was only hand tight because I did not have the odd tool Dicta required.
09-01-09, 11:36 PM
Here's my Dicta. What tool do I need to remove it? I thought I could use a punch in one of those holes, but it did not begin to move. I hand-tightened it initially, then probably put 300 miles on it before I decided I really needed a 22T.
09-02-09, 06:23 AM
It is entirely possible you have a defective freewheel. Dealing with rental bikes at work, there have been a few over the years. The trailercycles use them and I replace them yearly as preventive maintenance.
As for the Dicta freewheel, hammer and punch with some penetrating oil on the threads. Hopefully yhe threads were greased before installation.
09-02-09, 07:40 AM
Your ACS sounds defective. I have a silver one on one bike and a black one on another. No issues with either.
And the removal issue is why I've never used a Dicta or similar style SS freewheel.
09-02-09, 10:53 AM
a lot of freewheels have a clip/ spring that goes all the way round the inside of the freewheel. Theres slots in the pawls for it.
the clip can break up, and that gives no tension on the pawls so you get slipping.
had a cheap brand of BMX at the shop I used to work at. It had crummy freewheels. Had to change the freewheels on all the BMXs for the customers. Some when they were picking up the new bike. :(
the hammer and punch is what takes them off. If you put the punch in the hole above the Lida word. Then hammer towards the Lida word. Should come off.
09-02-09, 05:34 PM
If you put the punch in the hole above the Lida word. Then hammer towards the Lida word. Should come off.
Very well put. It came off easily. And yes, it was greased before installation.
And surprise, surprise - the ACS stopped slipping overnight (so maybe Operator was right). I fiddled with chain tension today, and the freewheel was making all kinds of funky racket when I first installed it, so I'm still a little wary.
09-03-09, 11:31 AM
ACS freewheels are loud.
09-03-09, 11:40 AM
On all my ACS freewheels I had the tight-loose-tight-loose problem.
Couldn't solve it via the chainring, so I dealt with it.
Put on a White Industries & now my chain is same tension all 360°.
Powered by vBulletin® Version 4.1.12 Copyright © 2013 vBulletin Solutions, Inc. All rights reserved.