> Well that's as good a reason as I can think of to do this but I > would not expect that to hold on my bicycle where Italian BB's > came loose unless I tightened them until I could smell onions as > they say in other languages (make your eyes water).
Quoted message said:
Quoted message said:
Quoted message said:
>> So, you see the RH cup chronically loosening up as the only >> downside? What about a thread lock compound on the BB shell, >> cup and lockring?
Quoted message said:
Quoted message said:
Quoted message said:
> Not hard enough. But just the same, to not unload the off side > of the force the thread must have a high preload, something that > thread lock does not offer and why it doesn't work in many > applications. That is why right hand cups with RH thread must be > extremely tight.
Quoted message said:
Quoted message said:
Quoted message said:
Well, from your comments and those of others, it seems that the RH cup loosening is the only downside. I guess I'll give it a try and see what happens. Worst case is I put the fixed cup in and tighten the bugger 'til my eyes tear up. 🙂 Thanks for your help!
Quoted message said:
Quoted message said:
I don't know how much you want to move to the right, but in the past people have used a single suitably thick flat washer, specifically made to move the chainline to the right. I think they came in 1mm increments to about 3mm. That way the cup can be made as tight as it needs to be.
Quoted message said:
My goal is to use the shortest spindle within reason whilst having the inner (on a triple) chainring just clear the chainstay. Do you think using spacers under the fixed cup is a better way to do this?
Yes certainly. A lock ring cannot be made as tight as a fixed cup. I'm sure one of the shops that read this must have such washers. Yellow Jersey, Harris Cyclery, or any number of others must have remnants from the days of yore. Some of them may not even know what those washers were for, there having been no call for them. You might also try the BO who are tandem specialists:
My goal is to use the shortest spindle within reason whilst having the inner (on a triple) chainring just clear the chainstay. Do you think using spacers under the fixed cup is a better way to do this?
Quoted message said:
Yes certainly. A lock ring cannot be made as tight as a fixed cup. I'm sure one of the shops that read this must have such washers. Yellow Jersey, Harris Cyclery, or any number of others must have remnants from the days of yore. Some of them may not even know what those washers were for, there having been no call for them. You might also try the BO who are tandem specialists:
The Sturmey Archer HMW127 ground and hardened spacer is perfect for this: http://www.yellowjersey.org/hardware.html item #10 At one time every LBS had these in all three thicknesses but alas they are now uncommon.
O tempora, O mores. -- Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971
When you make a peanut butter sandwich, you only need to spread peanut butter on one of the slices of bread...
However, the peanut butter in a peanut butter sandwich does not need to be aligned in order to hit a "peanut butter line" that exists halfway between the upper and lower teeth. However, a bottom bracket suffers from said problem.
But, I suspect Jobst will point out that the right hand ("drive-side"😉 cup uses a left hand thread. It appears that it is the right hand thread of the right hand cup (i.e., French/Italian threading) that is the fly in the ointment of my scheme.
But, I suspect Jobst will point out that the right hand ("drive-side"😉 cup uses a left hand thread. It appears that it is the right hand thread of the right hand cup (i.e., French/Italian threading) that is the fly in the ointment of my scheme.
Royce offers English, French, or Italian threads. They are not cheap, however.
Yes certainly. A lock ring cannot be made as tight as a fixed cup. I'm sure one of the shops that read this must have such washers. Yellow Jersey, Harris Cyclery, or any number of others must have remnants from the days of yore.
One of the Sturmey Archer spacer washers for the rear cogs is a very good fit in the ID for this purpose. I'm not sure of the thickness, but it's between 1mm and 1.5mm.
- ----------------------------------------------- Jim Adney [email hidden] Madison, WI 53711 USA -----------------------------------------------
Yes certainly. A lock ring cannot be made as tight as a fixed cup. I'm sure one of the shops that read this must have such washers. Yellow Jersey, Harris Cyclery, or any number of others must have remnants from the days of yore.
Jim Adney wrote: One of the Sturmey Archer spacer washers for the rear cogs is a very
Quoted message said:
good fit in the ID for this purpose. I'm not sure of the thickness, but it's between 1mm and 1.5mm.
Sturmey's HMW127 is 1/8" The other two (#?) are 1/16"and 1/4" Those are dead flat, good steel and cyanide hardened. -- Andrew Muzi www.yellowjersey.org Open every day since 1 April, 1971
Yes certainly. A lock ring cannot be made as tight as a fixed cup. I'm sure one of the shops that read this must have such washers. Yellow Jersey, Harris Cyclery, or any number of others must have remnants from the days of yore.
Jim Adney wrote: One of the Sturmey Archer spacer washers for the rear cogs is a very
Quoted message said:
good fit in the ID for this purpose. I'm not sure of the thickness, but it's between 1mm and 1.5mm.
Sturmey's HMW127 is 1/8" The other two (#?) are 1/16"and 1/4" Those are dead flat, good steel and cyanide hardened.
Dear Andrew,
I hear that these Sturmey Archer spacer washers can be ordered online or by phone from this bicycle shop for the hard-to-beat price of $1 plus shipping:
