Tmx100 horrible clunking rattle in gear

[mikefink]

Hi I'm new here with my 1969 tmx100. I just got it running good but as soon as I put her in gear there is a horrible clunking and rattle.  The previous owner replaced the plastic shifter drum locator... Are the trannys easy to disassemble without special bridgestone tools? I work at a bike shop so I have all the resources. Any help would be greatly appreciated!

Regards, Mikey

[coxy]

i am not sure about the tmx but the 175 and 350 you don't need the special tools if you have everything at hand i think you will be fine

[mikefink]

Thanks dude, it's weird the noise only happens IN gear, in neutral it sounds great. Clutch? Trans? Shifter drum?

[reed]

Mikefink
If you work for a motorcycle shop you will have all the tools to repair it and there are plenty of people on the site
To help you out.
Thanks.
Steve.

[mikefink]

Ya we mostly work on harleys and American v-twins but I still have my antique metrics! Do I have to split the cases to get to the trans? Or is there a trap door or something behind the clutch?

[reed]

mikefink
Yes you have to split the cases to get to the gears etc.
Thanks.
Steve.

[mikefink]

Got it fixed with a few hours of work, it turned out to be the flywheel/rotor was loose! Tightened it down and it still came loose, then again with loctite. Turned out the woodruff key was smashed and flared out the groove. A little filing later it fit fine guess it wasn't letting the rotor fit on the tapered shaft true. Just got it driveable and I love it to death! I kind of have to get a running start to get goin in first, and I know it doesn't have a lot of torque and I'm on my street sprocket.

 Is this typical?

[mcseitz]

I'd try the trail sprocket. Mine had plenty of torque when I was a lanky lad of 135lb. Now packing about 100lb additional (how is that possible?) the TMX still pulls away nicely with the trail sprocket. No running starts necessary. You lose about 5-10mph top end but as a trail bike that shouldn't be an issue.

[mikefink]

I'm actually planning on riding it to work and back. Top speed limit is 55 on the way here so I wanna be able to at least go that fast!