1975 CB125 Tracker project

Forks. Now brake is sorted pulled forks. Pretty squishy. There is rust but not on the slider part. Cleaned up ok. Dumped the chocolate milk, cleaned insides with brake cleaner till it came out clear. Blew air and the put the called for 10W-30 in. Pumped them. Much better and after multiple pumps. Sit, pump. Sit. No leaks at the seals which actually look brand new. More cleaning then decide, polish or paint and done.
 

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One fork actually had red better looking fluid. My guess PO did ATF. The manual calls for 10W 30 which is much thicker and makes for a better feeling fork.
 
Maritime said:
One fork actually had red better looking fluid. My guess PO did ATF. The manual calls for 10W 30 which is much thicker and makes for a better feeling fork.
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I read somewhere that ATF is supposed to be somewhere around a 7 weight. Maybe you can correct me kn this? I've been using ATF as air tool oil forever and I can at least attest that it works well for that. I have seen manuals that call for ATF, is it common for people to do this?
 
Yep, my GL calls for ATF in the manual for forks. I run 20 W fork oil though as I want stiffer forks. In the PO's de-fence, I doubt he had a service manual, he would have just probably assumed the bike used ATF like tons of 70's JDM's. I was actually surprised the manual called for 10w-30 OIL. After putting the 4.4 ozs in though and working them they were way better than the ATF as it was way to light weight. So the 30W makes perfect sense to firm up the little spindle forks.
 
Back in the 70's and 80's, we would go as high as straight 30wt in the standard forks for our roadrace bikes. I think I ended up with 20 wt in my CB400f and my brother had 30wt in his RD400 and my other brother had 30 wt in his CB550F with Ceriani fork tubes and aftermarket springs (he had more money than us).
 
ex119x said:
Back in the 70's and 80's, we would go as high as straight 30wt in the standard forks for our roadrace bikes. I think I ended up with 20 wt in my CB400f and my brother had 30wt in his RD400 and my other brother had 30 wt in his CB550F with Ceriani fork tubes and aftermarket springs (he had more money than us).
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Ha, cool. I actually used straight 30W as the 10W was moot but the book said 10W-30. I had 3 full quarts of small engine 30W on the shelf. I was worried when we first got the bike we may need to put better forks on it as he put miles on it but with the right weight oil they are way better.
 
Well, got the rear mounted, then aired up to find out I pinched the tube. Dammit I hardly ever do that, anyway in my pissed off state while pulling it out to patch it I dropped the 3' steel pole that comes with the tire change stand right on my foot, right where I had a mild gout flare up starting, well it's not mild today. I can barely hobble around and Advils are barely helping. So may not get the tires on for a few days.
 
Called the local shop. they have a tube so I will grab that later today on lunch break. don't want patches to start out with, Will patch the tube I pinched as a back up though.
 
Good luck with the tube, i always seem to pinch them no matter how careful i try to be!
 
Sderbyshire said:
Good luck with the tube, i always seem to pinch them no matter how careful i try to be!
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Thanks, I've done 20+ tube type tyres and this is the second time I pinched a tube. It sucks, I was rushing a bit to try and get the tires mounted in the 30 min I had between supper and other things needing done and that was a mistake.
 
This is the stand. Normally there is a bar in the middle to hold the wheel. This bike is so small the bar wont go in the bearings.
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This is what fell on my foot. It's thick steel.
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That's a nice setup you have there. I guess the one good thing about wrestling with tire changes on your hands and knees on the shop floor is when you drop stuff it has a lot less further to fall.

The last time I pinched a tube, it was re-installing a brand new one I'd just installed and removed minutes prior, after realizing I'd forgotten to replace the old rim strip I discarded. Ooof. I stuffed the used tube back in and I'm still riding on it- third time's a charm.
 
iatethepeach said:
That's a nice setup you have there. I guess the one good thing about wrestling with tire changes on your hands and knees on the shop floor is when you drop stuff it has a lot less further to fall.

The last time I pinched a tube, it was re-installing a brand new one I'd just installed and removed minutes prior, after realizing I'd forgotten to replace the old rim strip I discarded. Ooof. I stuffed the used tube back in and I'm still riding on it- third time's a charm.
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I re-use a tube 2-3 times depending on age. My GL gets a new tire every season generally so new tube every 3.
 
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Removed 2.5 oz of stock on weights and put 1/4 back in a different spot. Valvs stem stops random now. 10 spins and it didn't stop in the same place twice. Bought thay HF stand almost 2 years ago and just now used it.
 
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