CRM114 said:
As our good friend Joseph Stalin once said, "Better is the enemy of good enough." :busted:
Actually, I was thinking that the hauler like yours (2PLY) would work well with a spring. The spring could have an adjustable preload that when properly set would compensate for the weight of the bike. You could then lift it either up or down with just a gentle push. The only real design change would be some kind of retaining pin to hold the thing in place when it was in it's unloaded position.
John
That might end up even more complicated than the bottle jack. Sounds like it would be fine with the bike attached, but how would you get it back down after unloading the bike? Could end up acting like a giant mouse trap. :eek:
With my rack, I don't have to pump the jack to get it in the up position, I can just lift it to the top and lock it there. The jack is not positively attached to the upper arm, it rests into a socket and stays there as long as there is pressure or weigh on the rack. I store it this way so that the jack's piston and shaft is not exposed to rain and rust.
One of the dangers of this type of rack is that if you have a road strike, it's your bike's wheels that hit. With a tray style rack, the rack would take the beating first. For this reason, a high lift is important. I opted for the optional extra 2" lift when I bought mine and if I build a new one, I'll work more lift into it. Another feature I like is that the bike is relatively close to the vehicle. With the front tire turned to one side, the bike can be closer to my van and still not touch anything. With a tray style rack, the handle bars can get in the way if the bike is mounted too close.
My VW Van is a Syncro Model (AWD) so I do explore some Jeep roads and ground clearance of the bike on the back is important. So far, so good. :thumbsup: