Canadian.
Paralever bushings vs. OEM needle bearings
- Thread starter dancata
- Start date
Canadian.
dancata
Registered user
Mo2S4
They aren't sealed - just a plastic cage retaining the needles and two races (they do clip together via the plastic race but there are no seals). They come pre-greased with 'special' BMW white grease (which has a German name I can't remember
). To regrease them you can just unclip them and wodge some moly bearing grease in.niko
Registered user
cheers mateThey aren't sealed - just a plastic cage retaining the needles and two races (they do clip together via the plastic race but there are no seals). They come pre-greased with 'special' BMW white grease (which has a German name I can't remember
niko
Registered user
dancata
Registered user
Use: for large , slowly rotating bearings under extremely heavy loads. Good water resistance. Suitable for extreme vibration applications. Contains molybdenum disulphide.
cheers mate
A tip I was given from someone on here (can't remember who it was now) for fitting either new or regreased bearings: It's such a low pre-load on the bearing that the stiff grease can disrupt the torque reading, so when you have assembled everything and are torquing the adjustable pinion (8Nm), slightly over torque it and work the swingarm up and down a few times to bed the bearing. Then back it off and re-set your final torque and lock it with the big lock nut, together with your choice of threadlock (or no threadlock - many opinions about this
).niko
Registered user
cheers guys , time for me to get on the case 
...or just do it by feel 
...or just do it by feel
Quite right.
Having not done it before I didn't have the muscle memory and wasn't confident in 'feeling' the low torque. Having done it a few times now, I'd happily do it by feel if I didn't have a torque wrench handy. If I did have a torque wrench handy, I'd use it - why not?
dancata
Registered user
Quite right.
Having not done it before I didn't have the muscle memory and wasn't confident in 'feeling' the low torque. Having done it a few times now, I'd happily do it by feel if I didn't have a torque wrench handy. If I did have a torque wrench handy, I'd use it - why not?
What about torquing the screw until the wheel has no mere play in it?
What about torquing the screw until the wheel has no mere play in it?
True, but it's just a little bit more than enough torque to eliminate play
...In the end, I'm happy to admit that I'm obviously not a 'real engineer' and I bought a low range torque wrench so that I could confidently set the adjustable pinions correctly
That said, having 'felt' 8Nm on those bearings a few times now, I'd confidently do them at the roadside with no torque wrench available if I had to.In the end, I guess it's down to experience - I'm sure Steptoe doesn't use a torque wrench for paralever pinions, but then again it's his bread and butter and I'd bet he's done hundreds of them. On the other hand, for me doing them for the first time, a torque wrench was a nice confidence booster.
what a mess! Grease nipples are the real answer, but BMW don’t fit them as they used to, very satisfying going round the bike every few months with a grease gun, nothing ever seized up on my old airhead. happy days
what a mess! Grease nipples are the real answer, but BMW don’t fit them as they used to, very satisfying going round the bike every few months with a grease gun, nothing ever seized up on my old airhead. happy days
Is that why you've still got yer airhead
Bored out to 1200Do the 12's get a chance to wear out the pivot bearings?
I have changed the bearings and it's not too difficult. Once you have done it it's not too bad to take it apart once in a while either. Orig's are not too expensive and they are better without the usual jetwash to death treatment.
waldo
Guest
grease nipples
drill/tap/fit grease nipples? Should say still looking for GS to buy so blissful ignorance of practicality of this idea!
Ps. Collapse of staff in Portuguese bearing shop into unstoppable hilarity recently when I tried mimeing when attempting purchase of grease nipples....
drill/tap/fit grease nipples? Should say still looking for GS to buy so blissful ignorance of practicality of this idea!
Ps. Collapse of staff in Portuguese bearing shop into unstoppable hilarity recently when I tried mimeing when attempting purchase of grease nipples....
Good idea, but unfortunately, given the way the paralever end of the swingarm is arranged, it'd be just about impossible to devise an accessible place to fit a grease nipple for those bearings.
As Steptoe says, yearly greasing and adjustment is the way to go - simple if you don't use threadlock, bit more of a pain if you do (like me
- I might try it without next time).The trouble with these bearings is that they don't rotate, they just rock back and forth through a tiny angle (bet it's no more than 5 degrees) under a pretty high loading. Perhaps a plain, self lubricating bearing is a better solution but if it is, I still wonder why BMW didn't fit them from the start?
Interesting thread, brings me to mind of old BSA A10 which, had a bronze bush, and the commonest upgrade was to replace with a needle roller.
People are never satisfied !!
People are never satisfied !!
Ain't it ever so.
Along the lines of the RS owners who fit GS air intake tubes as it improves the bike.
And the GS owners who fit RS air intake tubes as it improves the bike.
Use: for large , slowly rotating bearings under extremely heavy loads. Good water resistance. Suitable for extreme vibration applications. Contains molybdenum disulphide.
Nice pic of yer diary,
David Baily yer not ugg
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