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Workstand and clamping...(4 posts)

Workstand and clamping...UncleMoe
Aug 3, 2001 6:26 PM
This might be a dumb question. I just bought my first workstand so I can do a better job fixing my bikes. I just get frustrated leaning it against a wall and stuff. So I got the Park PCS-1. Basically a lower end model. I also plan on using it as a bike stand to keep it more secure in the garage.

I'm glad I asked the LBS about the clamp. They said to clamp the seatpost to the clamp, not the top tube, because it could damge the top tube.

So I just assembled it and I just about have enough of the seatpost showing to clamp it on with an inch left at the top and bottom. However, the bike isn't as "tight" i guess you could say as I'd like. The clamp is on the tightest setting at 1" - 1"1/8 (I think). The bike is somewhat snug, bike when I wipe it down it still shakes a fair amount and every 10-15 seconds I steady it. I can imagine this might be a pain when adjusting derailers, etc.

My questions are:
- Did I buy a worthless bike stand?
- With the shaking, can I do any damage to the seat post? (Its not violent jerking shaking, its just slight yet irratating).

Thanks.
re: Workstand and clamping...Akirasho
Aug 3, 2001 6:54 PM
I don't have a Park stand (I've got the Ultimate Pro) but imagine, that with 18+ lbs. of bike hanging out on a relatively unsupported arm, that you'd get a bit of "play". Unless you're having a problem with the clamp itself, I wouldn't worry about it too much...

As far as damage is concerned... your weight and motion (when riding) on the saddle and seatpost are much more "active" than a bit of wrenching on the stand... not to worry.

As far as worth is concerned... measure that over time... and the amount of money (and time) you eventually save from easy wrenching.

Be the bike.
Use a ragWoof the dog
Aug 4, 2001 1:14 PM
Just put a rag under it, like they do in a shop.
Take your seatpost out and look how thick it is. Its not made of a very thin alluminum like the frame tube in the middle. It is thicker than a frame. I think you can safely clap it down as hard as you want (to a point). But why would you want to anyway? Just use a rag and you will be all set. Be sure to have enough seatpost in the frame, you don't want to break expensive stuff.
Sincerely

Woof the dog
Good advice aboveWhatever
Aug 4, 2001 6:09 PM
You can clamp down on the seat post firmly so that there is no play coming from the seatpost in the clamp. No problems there. The play you are seeing is almost all from the stand itself twisting around...but also a little from the bike flexing.

The repair stand is to hold the bike at a level where you can work on it...NOT to provide a hold to torque against. Any time you torque a part (taking off the pedals or cranks, for example) you have to apply counter-torque against an appropriate bearing surface on the frame or part. Once you understand this, then the wobble of the frame in your stand can be seen to be annoying, but harmless. Many great builds have been done with the frame hanging from a rope thrown over a ceiling joist...wobbly, for sure, but it works.