Carbon Bike

[OakLeaf]

I'm not sure of the OP's terminology. I don't quite understand "the frame rests on two extended arms" in connection with a fork mount, unless by the "arms" you mean the fork itself?

Can you post pictures of the racks in question?

[Aggie_Ama]

DH and I both have Cannondale's with carbon forks. We have used fork mount Yakima Locking Bedheads for years. His bike is a 2005 and mine is a 2006. So far the forks seem happy? I think the drop outs are possibly metal but we have used this carrier for 2 trips to New Mexico (1,300 miles each way) and numerous trips to rides. So I guess ignorance is bliss?

I find taking the front wheel off a slight advantage for theft, we lock the wheels in the car. Then the thief can only sell an incomplete bike and can't ride it away. One of the local LBS owners discourages people from the full bike mounts for the same reason, his wrench had a bike lifted off a supposedly locked hitch rack (although the wrench couldn't remember if he took the time to lock it) and judging by tire marks through the sand in the lot the thief rode it away.