Good to see another woodchuck on the forum.. Carry on
This is a discussion on Another UJM cruiser into something it's not build! within the Project Builds forums, part of the Caferacer.net Forums category; Originally Posted by jcw I am having a GREAT deal of trouble with cognito moto with my drop triple tree and stem for my R75. ...
i mean that is just plain dumb it wont hold at all like a clamping situation and using it on upsidown forks will dent the fucking tubes and right at the cap threads
it just goes to show making simple pretty parts on your cnc means fuck all as far as being a designer of good working parts
Good to see another woodchuck on the forum.. Carry on
prohibitively expensive drunk
Wanted to post an update even though there hasn't been any progress that could show in a picture. Still waiting on parts from Lithuania to convert the rear wheel to 17" and some other odd and end like a steering damper. (going to use the same system the gsxr used)
I finally got the reworked head swapped on to the engine. I was pretty sure the RFY shocks would still be just spring holders even after a rebuild and recharge, but for the money and time I'm a bit surprised at how adequate they perform. I had been thinking that the bike was overpowered without all the bodywork and weight removed from the rear of the bike it would feel a bit loose coming out of turns, especially left hand turns.
After installing a hoop in the rear and a lot of testing and adjusting the forks and shocks I was almost ready to put a stock front end and shocks back on the bike. I put it back on the lift and saw the stamped steel brace on the swingarm has torn away right under the driveshaft and more the swingarm bushing on the same side is already oval trash.
I can't get the camera in there right now to show the extent of the tear.
I need to figure what has gone wrong. Are these two unrelated problems coincidentally located next to each other? Did one lead to the other? Is it something else I did that affected the swingarm? The bike was buried well over the swingarm in mud but looked intact when I changed the bushes initially. It's possible I damaged the bushing when installing it. At this point, since the bike now runs and rides and stops I think upgrading to needle bearings would be a good option. Problem is I don't have either the skills to determine if there is some tiny bend or kink to the frame that would be damaging the swingarm. I can tell the wheels, forks and neck tube are straight but that's as far as I can get right now as I'm between shop spaces. (long story involving my boss, booze and the police). I ordered a used swingarm to use once I give up trying to repair this one with my crappy flux core welder.
I'm not sure about running a splash guard in the back or some fender and all the electrical is still homeless. I haven't even decided whether to use a keyed ignition switch or just a toggle. I'm pretty happy putting the battery between the rear motor mounts at a 45 degree angle. For some weird reason I don't like the idea of putting any more weight on the swingarm as I've seen people put batteries there. I also need to finish the bodywork on the seat cowl and then finish the upholstery which I am wholly unqualified to do.
Are the frame and swing arm straight? Looks like it's had a hit in its day. That's pretty much the only way that bracing could be damaged like that. Would explain the fubar'd bearing as well.
*I may be going overly critical on this 30 something year old bike with the modern front tire and forks, but the rear has never felt as planted as I would like. It rides great at the legal limits, it's when really pushed hard that it gets a bit dance happy.
Judging from your photo, that swing arm looks awfully rotten. Maybe all the rust perforation has something to do with it. I wouldn't ride that the way it is. You might also want to take a small hammer with a pointy end and tap around the lower part of the frame. If there are any spots on the frame that look like the swing arm, you might want to put the whole thing back where you found it.
"Non urinat in ventum"
Sorry but, you've built the kind of Bitsa that I just don't get. The front forks, wheel and brakes look way too beefy, the motor is massive and everything behind that quickly turns to shite.
It's not weight that is tearing the marginal bits apart it's torsion.
... steering damper is great in concept but what are you going to attach it to that doesn't already flex and wiggle?
Last edited by TrialsRider; 09-26-2017 at 07:57 PM.
I'm going to attach the steering damper from the stock mount in the gsxr lower yolk to a beefed up version of the steering stop on the neck tube. I don't want to do that until the new shop is in order because all I have is a crap Lincoln flux core welder. It's fine for an exhaust repair on a 96 civic but not this.
2 things that will test your swingarm integrity real fast; on a chain drive bike having the chain too tight and on a shaft drive bike having a spline joint seized up.
oh make that 3; getting rear ended by a truck.
:| it's a cruiser frame so occasionally you need to remind yourself that Honda designed, spec'd and intended it for bopping down to Dairy Queen not for go fast.
Last edited by TrialsRider; 09-27-2017 at 04:09 PM.
open your eyes ya dopes fer fucks sake dont go blaming the war on a soldier
rust has eaten that swingarm.period
lesson learned? you got it out of mud
its junk nothing but scrap
the frame is very likely similar condition unless it was bat acid that was focused on the area of the torn ujoint boot
acid migrating then to the caverness interior lol
but yeah check the frame any place where liquids could settle drill 3mm holes to check wall thickness of tubes and formed sealed gusset structures
goddamit how could you not ........