I have the shop quality single-arm Park repair stand, which is about 20 years old or so, and I see that the new ones now have an additional height adjustment that brings them up to 62". At that height, clamping to the seatpost lends a more comfortable work height. I'm not challenging your statement Tom, but it's hard for me to see how the ISC-1 could damage a frame. It does not expand at the seat lug, so shouldn't affect clamping of the seatpost, and the multiple plastic wedges seem to grip the inside of the tube very well with minimal clamping force. I suppose if a gorilla really reefed on it, they might do some damage, but a modicum of attention should avoid any problems.
Steve Barner, Bolton, Vermont
> List:
>
> I would not recommend the internal seat tube clamp (ISC-1). I have seen
the
> seat tubes expanded out so much on some frames that the original post no
> longer clamps in the frame. It's better to use a cheapo alloy post as a
> dummy in the frame and then clamp it to the repair stand.
> Park tool now has extensions for all their stands so you don't have to
stoop
> over if you are a giant. The park clamps are bombproof and easily
repairable
> and are in use in every last bike shop in the US- some for 30 years and
> more. I like the Ultimates too, they have a broader range of adjustment
and
> a good and simple clamp. They are just not vintage enough for me I
> guess......
>
> Tom Martin
> Oakland CA
> No on topic bikes (yet), but I do have on topic tools and stands