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I am a new owner of a Racer X. Feels great! I am seeking input on the risks of transporting it via the attached pics. I have Mini w/ a rear rack that is designed to cradle bikes via the top tube. I cannot do that w/ the Racer X. (No room w/ the rear shock configuration) I can however clamp the down tube just above the bottle cage bosses. (See attached pic and close up).
My question is: Do I need to be worried about stress on the down tube? With a bike cradling the top tube, most of the weight of the bike hangs and thus (I think) the stress is reduced on the top tube itself. In clamping the down tube I fear the stresses are increased perhaps to the point of serious damage.
As an alternative I can drill a new hole on the rack, rotate the clamp 90 degrees and clamp the seatpost. With this I question a just a carbon post holding up $5000 worth of bike. The seat post clamp (on the frame) is the only thing keeping the frame from sliding down off the post and falling off onto the road.

Any input is greatly appreciated. I don't want to lose my bike!
 

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ddesmonts said:
I am a new owner of a Racer X. Feels great! I am seeking input on the risks of transporting it via the attached pics. I have Mini w/ a rear rack that is designed to cradle bikes via the top tube. I cannot do that w/ the Racer X. (No room w/ the rear shock configuration) I can however clamp the down tube just above the bottle cage bosses. (See attached pic and close up).
My question is: Do I need to be worried about stress on the down tube? With a bike cradling the top tube, most of the weight of the bike hangs and thus (I think) the stress is reduced on the top tube itself. In clamping the down tube I fear the stresses are increased perhaps to the point of serious damage.
As an alternative I can drill a new hole on the rack, rotate the clamp 90 degrees and clamp the seatpost. With this I question a just a carbon post holding up $5000 worth of bike. The seat post clamp (on the frame) is the only thing keeping the frame from sliding down off the post and falling off onto the road.

Any input is greatly appreciated. I don't want to lose my bike!
Personally, I would never clamp any part of the frame. I prefer roof mounted fork mounts.

If it has to stay on the back would the adpator that goes from the steerer to the seatube work? Or would it hang too low?

This thing:

http://www.performancebike.com/shop/profile.cfm?SKU=19096&subcategory_ID=4414#

Otherwise you may be looking at a new hitch mount that doesn't clamp the frame.
 
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