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mxracin · 07-31-2004, 07:18 AM

I have a 30' Haulmark on a Columbia chassis. It's true that they leave the air ride in, but to be honest I have not observed more than an inch of movement between the cab and the box, well within the limits of the boot. We race MX, and many of our pit areas are on very rough, uneven ground, often accessed by less than smooth roads. I have watched closely as my son drove over one of the roughest access roads I've seen, and the movement was very slight up and down, a bit more pronounced side to side.

We have 7,000 miles this season, and haven't observed any water intrusion. The seal they use seems to be more than adequate for the movement. Time will tell. Renegade also leaves the air ride in, but they put a travel limiter on it.

07-31-2004, 07:18 AM	#12
mxracin Junior Member Join Date: Dec 2003 Posts: 13	I have a 30' Haulmark on a Columbia chassis. It's true that they leave the air ride in, but to be honest I have not observed more than an inch of movement between the cab and the box, well within the limits of the boot. We race MX, and many of our pit areas are on very rough, uneven ground, often accessed by less than smooth roads. I have watched closely as my son drove over one of the roughest access roads I've seen, and the movement was very slight up and down, a bit more pronounced side to side. We have 7,000 miles this season, and haven't observed any water intrusion. The seal they use seems to be more than adequate for the movement. Time will tell. Renegade also leaves the air ride in, but they put a travel limiter on it.