G3LS swing arm details
Posted: Wed Jan 13, 2021 9:44 am
Three months ago I purchased a 1951 Matchless 350cc G3LS and joined the club in the last few days.
The frame and wheels are still assembled and the rest is in boxes, but a close look through the boxes seems to look like it is very complete.
I decided probably the best approach would be to start work on the frame and wheels to get a good base on which to sort out how the rest all fits together.
My first question relates to the swing arm bush lubrication. On my bike the steel pin that the swing arm pivots on has 1/4" Whit countersunk screws holding the outer covers in place on each end and the left hand end has another screw offset which I have read is for adding a heavy grade oil through. However, there is no connection to the RHS as both threaded holes are blind and have always been that way as on close inspection evidence of the tapping drill finishing the hole bottom is there.
What has happened of course is that the RHS bush has tightened up forcing the pin to turn in the aluminium/diecast casting which is now slightly worn and obviously something I need to address.
I read something about a spoke holding the end caps in place but because mine isn't like that and clearly needs fixed so oil can get through can anyone help please? I am keen to get it back the way it should be.
Was there also anything that prevented the pin from turning in the casting originally, apart from a fit tighter than the bushes?
Finally I am missing the sidestand and thought I would make one and wondered if anyone would know how long they are and an approximate diameter or possibly direct me to a drawing or photo of one that I could copy please?
Thanks
Murray
The frame and wheels are still assembled and the rest is in boxes, but a close look through the boxes seems to look like it is very complete.
I decided probably the best approach would be to start work on the frame and wheels to get a good base on which to sort out how the rest all fits together.
My first question relates to the swing arm bush lubrication. On my bike the steel pin that the swing arm pivots on has 1/4" Whit countersunk screws holding the outer covers in place on each end and the left hand end has another screw offset which I have read is for adding a heavy grade oil through. However, there is no connection to the RHS as both threaded holes are blind and have always been that way as on close inspection evidence of the tapping drill finishing the hole bottom is there.
What has happened of course is that the RHS bush has tightened up forcing the pin to turn in the aluminium/diecast casting which is now slightly worn and obviously something I need to address.
I read something about a spoke holding the end caps in place but because mine isn't like that and clearly needs fixed so oil can get through can anyone help please? I am keen to get it back the way it should be.
Was there also anything that prevented the pin from turning in the casting originally, apart from a fit tighter than the bushes?
Finally I am missing the sidestand and thought I would make one and wondered if anyone would know how long they are and an approximate diameter or possibly direct me to a drawing or photo of one that I could copy please?
Thanks
Murray