Sine

Waiting for a swing arm axle, snail cams. Bar is definitely not a trials bar, some cheap eBay bars to start getting things sorted. Controls are cheapo eBay units, the Piston size is larger than the AJPs, hopefully doesn't ruin clutch and brake feel too much. They're useful as they have integrated micro switches on the clutch and brake. Also, they look cool and the build quality for the dollar is excellent. Still deciding on electronics.

Thanks! I ended up getting a used axle from eBay across the pond. I think I see how to bleed the rear brake. The bushes that go into the swing arm needle bearings are present. However, they narrow the gap between the swingarm bearing yokes so that they line up for the motor mount point. This seems to agree with the caliper measurements. Is the swingarm centered on the axle perhaps by the motor vs the frame? If this is the case then the gap between the swingarm and the frame makes sense. I think this makes sense there's a lower mount point that centers the motor to the frame. The parts diagram implied the bushes are inserted from the inside towards out.

Have the bike into almost a roller. Rear suspension mostly sorted. Some things I'm not clear on: Found that I'm missing the swingarm axle (not the rear wheel axle). Does anyone know the material the axle is made out of from factory? Assume it's aluminum. If so I can probably make one myself. Further, there seems to be a bit of space between pivot area of the swingarm and the inside of the frame. However, there doesn't appear to be any washers/spacers in this area in the factory parts list. Am I supposed to torque this down tight enough to close the gap? Snail Cams/chain adjusters, I'm missing them. The aftermarket ones seem to have ridges on them that don't match the cuts in the cam block on the swing arm, does it matter? The rear brake caliper doesn't seem like it has a bleed screw? How does one bleed the brakes on these? Pending: Finish the getting the motor/clutch back together and installed in frame. Get the handlebar (missing) sorted and clutch/brake levers. All the EV parts =D

A parts bin bike if there ever was one! You mean I can't attach them all and get super mega extra stopping? ?

I was more a fan of Legos and kludging together my own things. Consequently, I'm a square peg in a round hole kind of guy.

I bought a 1998 TX 320 as donor bike for an electric conversion. Problem is it's in parts and I'm not the one disassembled it (long story). Because I'm doing an EV conversion there are a lot of parts I don't need, and many that I do. I don't have any prior experience with Trials bikes at all, so it's all new. From the previous owner I was given reprint of the factor parts/schematic from Jim Snell / Rising Sun Imports, but it being in Spanish and diagrams not super helpful in seeing exactly what bolt is what or how parts fit together, wondering if I can get some pointers on how to assemble this bike back into a roller. The near term goal is to get the swing arm,/rear wheel motor (without top end) and bash plate in. Basically, enough that it can roll/brake/clutch in under its own doing, but it doesn't need to be propelled by the motor so I can start sizing things up for a battery pack and motor/electronics install. I know I'm missing a handlebar, exhaust, fuel tank, generator motor cover, etc. I've attached pictures of what I have. If you have TX or similar model I could use pictures of the swing arm axle area on both sides, the suspension linkages top/bottom, motor mounting points/brackets/hardware, from there I should be able to get the remainder from the diagrams and trial/error. Scribbling/circling my photos if you can ID a specific related part works as well. It's a mess, but thanks for the help!

Many OEMs or many owners?

Indeed. Fortunately motors, controllers and batteries have come way down in price.

I would expect something like a polymer insert, Silicone, etc. for an OEM job. Cork/Wood just seems out of place, but as you indicate, it's a 21 year old motor and it's still there can't be too bad.

I bought a bucket of parts 1998 (US) Gas Gas TX 320 that I'm using for an EV conversion (longer story here) I was looking at the motor and saw what appears to be wood or cork in the crank counterweight, its feels like soggy wood when I touched it with a probe. Is this OE? I haven't owned a 2T since I was a teenager with a gas stand up scooter. There used to be home made or aftermarket "Stuffed" cranks that reduced the crank case volume to increase the intake velocity and primary compression. That said, wood still seems to be an odd choice if this was the goal of GG or someone else. It doesn't matter for my purposes as I'm doing an EV conversion, but curious nonetheless.

I'm a 12 year street bike rider that's just now getting into Trials. Coming from -0- experience in anything remotely resembling dirt or obstacles. To make things even more interesting, my bike is 1998 Gas Gas TX 320..... that I bought as a pile of parts. Story from previous owner was that his friend was a GG dealer and was cleaning up shop and got this TX with a new frame. The problem is *I* am not the one that disassembled it, nor am I familiar with the construction of these bikes even tangentially. However, Previous Owner did give me a binder that has the GG parts catalogs/schematics for the model year. I'm not sure if I have 120% of a bike or 80% of a bike however, as I have about 5 brake calipers, some bags labelled for Bultaco, etc. It's basically a puzzle I'm not sure is solvable. To make things even MORE fun, I'll be doing an electric conversion on this (why missing parts doesn't concern me too much). Thus, I'll be learning mototrials on a bike I will have built. As I have no frame of reference of what these bikes should or should not do, I haven't a clue if what I will make is any good. I'll be leaning on the board to hopefully help me get this thing pieced back into a roller.