It's time to start a winter Project. The Red Bike

You lube the rubber bush the caliper mounts to it's carrier through. This allows it to slide left and right a little bit as you use it (right when you apply the brake, left when you release it). So yes, lack of lube there may be your issue. When it gets really hot it may be hanging, sticking and not moving as it should. There's only one bolt and rubber bush that holds the caliper to it's bracket, the one with the yellow paint on it here .....

View attachment 250743

You can kind of test it by grabbing the caliper and seeing if you can move it in and out a little bit, check to see if it's sliding in the rubber bush as it should.
Thank you. This has happened only when it is over 95F. Today at 90 it did not happen. I will smear it with red rubber grease.
 
There's a steel sleeve inside the rubber bush. This keeps the bolt from squashing it when you tighten it down. Remove the metal sleeve and apply red rubber grease to the hole in the rubber bush and the outside of the steel sleeve. Re-assemble and you should be good to go.
 
There's a steel sleeve inside the rubber bush. This keeps the bolt from squashing it when you tighten it down. Remove the metal sleeve and apply red rubber grease to the hole in the rubber bush and the outside of the steel sleeve. Re-assemble and you should be good to go.
I dont wonder if that is the cause of a shudder in both my XS650s when braking. Shudder only occurs at lower speeds as I approach a stop. 60 down to 15 or so all is good, then a shudder 15 to 5 or so.?
 
There's a steel sleeve inside the rubber bush. This keeps the bolt from squashing it when you tighten it down. Remove the metal sleeve and apply red rubber grease to the hole in the rubber bush and the outside of the steel sleeve. Re-assemble and you should be good to go.
That steal sleave was really tight, virtually no movement, and tough to remove. A quick clean-up and a dose of grease and it moves freely now. I did a quick deglaze of the pads on a belt sander while it was apart.
 
For cleaning pads and brake shoes, I like to bead blast them. I think it does a wonderful job .....

SuzHeadShoes.jpg
 
I spent some time giving the Red Bike some love today. A weeping base gasket was a disappointment. I retorqued the 8 head bolts to 29 lb/ft, up from 27.
More dumbassery on my part. There continues to be just a little oil under the carbs. Of course when on the side stand eventually it finds it's way down the side cover and onto the new headpipes. I checked several times before but a few days ago I checked and there was a drip hanging off the guide adjuster acorn nut. I know I checked that several time...
Hopefully a clean-up and new 20mm x3mm o-ring ($2.49 at Trilling Tru Value, in same location since 1850) does the job.
 
More dumbassery on my part. There continues to be just a little oil under the carbs. Of course when on the side stand eventually it finds it's way down the side cover and onto the new headpipes. I checked several times before but a few days ago I checked and there was a drip hanging off the guide adjuster acorn nut. I know I checked that several time...
Hopefully a clean-up and new 20mm x3mm o-ring ($2.49 at Trilling Tru Value, in same location since 1850) does the job.
have you carefully snugged the 10mm bolt head above the cam chain adjuster?
10mm bolt retorque cam chain tensioner.jpg
 
douse the area around the adjuster housing with talcum powder: it'll leave a trail from the source

This is the way....

We used to use specifically manufactured red talcum powder in 12 oz plastic squeezable tubes for tracking fuel leaks on aircraft when I was in the Air Force.

There were times in confined areas like flap wells, wheel wells, etc...that you'd go home at night blowing pink boogers out of your nose from the dust in the air from talcuming everything over and over. :er:

It was a very, very effective method for pinpointing exact leak exit points. 👍
 
There happens to be an American o-ring that fits that tensioner cap nut perfectly, and it's cheap too, lol. You can get a lifetime supply for less than $5 .....

CamChainAdj.Cap O-ring.jpg


And it's nice to have extras on hand because I've found this o-ring goes flat and leaks rather quickly because it doesn't protrude very much from it's groove in the cap nut. I find I need to change this o-ring every few years.
 
So... I probably lack the full skills needed to "Search" on this thread. I played with my jetting on the VM34 and got the Red Bike running pretty good. I ended up at 20 pilots and 190 mains. A couple of links posted to me on this thread helped me direct my moves but it seems I was misinterpretting results. I did still have too much dark on the plugs and assumed it was the pilot jet because I always wander back into town at a relaxed pace. This thread from 2012 showed up recently. I hadn't found it before. As I followed it (cooming home from the Smokies 2023 Rally) realized the error of my ways.
https://www.xs650.com/threads/mikuni-vm34s-tuning-help.19322/
I went to 180 mains and 25 pilots, synced and played the air mix and the bike is better than ever.
 
So... I probably lack the full skills needed to "Search" on this thread. I played with my jetting on the VM34 and got the Red Bike running pretty good. I ended up at 20 pilots and 190 mains. A couple of links posted to me on this thread helped me direct my moves but it seems I was misinterpretting results. I did still have too much dark on the plugs and assumed it was the pilot jet because I always wander back into town at a relaxed pace. This thread from 2012 showed up recently. I hadn't found it before. As I followed it (cooming home from the Smokies 2023 Rally) realized the error of my ways.
https://www.xs650.com/threads/mikuni-vm34s-tuning-help.19322/
I went to 180 mains and 25 pilots, synced and played the air mix and the bike is better than ever.
Forum skills? At least you're tech savvy enough to post photo's, that's far more than I can do.
 
Earlier in this thread I expressed how this bike felt "Livelier", "lighter" than my tracker. Any body who is curious, I can post yet another picture of either. But... in another thread "Tyre wear" ( must be someone from Saskatoon) as I responded and checked MY tires (Tyres) I realized that a 100/90 18 is a much bigger tyre(?) than a 3.50 18 and the difference between the two is noticeable to an old non rider (for 25 years) like me.
 
Yes, fatter tires steer and turn slower. My '78 Standard came to me with a 120 rear. After I wore it out, I went back to the more correct 110 and what a difference. It steered and turned so much easier and better.
 
Yes, fatter tires steer and turn slower. My '78 Standard came to me with a 120 rear. After I wore it out, I went back to the more correct 110 and what a difference. It steered and turned so much easier and better.
Indeed. One time I picked up a couple of bargain Dunlops at an autojumble and fitted one to the front. Nothing wrong with it, perfectly good tyre, but it was just a size too tall/wide and as soon as it wore out I gave the second one away to a sidecarist, who needed that size.
I mean, I got used to it, the slower steering, just had to wrestle the bike into the corner more, but it was far from enjoyable.
 
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