liveforphysics wrote:The worst possible thing you can do for a trailer is to make it long and put the weight over the back/rear axle area. This make a device that requires almost no influences to start swinging, and something that will be very difficult to stop swinging.
Actually, the worst possible thing you can do for your trailer is build it & test it (correction: not "test it" but just "race" it) like LFP does for his first race bike build.
Man, tricking out a race bike or doing a long-haul trailer trip on a unique design probably demands a week or two or three leeway for mods & re-dodos.
[At least I can't run on 24/7 fumes anymore... but it sure is hell is fun reading all the live updates & excitement of the immediate adventure & creation in the moment...
Not say'n it's destined for failure as in LFP taking 3rd place!!!
BUT, LFP burned his candles at all ends to barely get 'there' & 'do' it. The awesome luxury of youth and boundless energy.]
I'm being a smart-ass
, I guess, but I was reading your thread from start to finish believing I was 2 weeks behind your start & would see lots of road trip pics by now. Bummer to find it stalled out by the unforeseen need for shakedown pre-trip.
Now, you're at that 1-2-3 week shakedown phase, but no time appears to have been allotted for it. I'm really not bitching but I do believe you have to be prepared like your boyscout motto says, otherwise be prepared for the inevitable delays for "the shakedown" for actual road worthiness.
Hope you find a happy solution that works. Hasn't anyone else on ES done some long-haul trailer trips w/posts? If you got the $$$ maybe you could just copycat 'that' & go with something known to work from another *already* completed shakedown road trip?
When I built the first one-wheel trailer, I loaded it up with camping gear for a shakedown cruise, and it scared the bejeebers out of me going down a big hill. Wobbling back and forth out of control. I reinforced some key parts of it with some triangulation and some more rigid steel and the wobbling stopped. Grab the trailer in your hands and try to bend it at various weak points. Can you make it deflect, even a tiny amount? Say by twisting the parts that connect to the bike frame? That deflection can add up and feedback into a major fishtail under heavy loads.
Can you mod your trailer to take-out the twisting? Install a light weight base/bottom with cross support or use 90 degree angle around the perimeter, attach rib(s)/bars at the mid points on each side, or at both front & end, and triangulate that up in height for vertical no-twist "stiffness" attaching to the frame "center-rib", clamp/epoxy or weld it, and then have the rigidity transferring the twisting forces into the trailer frame & base preventing that "rope twist" motion? Or, steal from the Bob-trailer design adding that vertical tri-structural component. You can even tension cables & triangulate that too saving space & weight. Or, is the rear suspension on the bike itself the devil in the details; maybe too much play in the attachment hardware allowing for that "rope twist"? Hey, I'm shooting in the dark blind here.
Anyway, best of luck to you... & I look forward to your solution & adventure...