At first glance I just thought my rear fender was a little bent, but further investigation shows the rear wheel is offset to the right in relation to the centre line.
First suspect was the wheel spacers. I hope someone can verify they are correct (picture). With the spacer in place, the distance from the rim to the outer edge of the spacer is the same on both sides of the wheel (77-78mm).
On a dead level and flat bench I stood the swingarm up by supporting its pivot bolt on 2 equal steel blocks. I then stood a square up against the swingarm where it pivots and measured the distance from the wheel mounting lugs (pictures). Difference between left and right is slightly more than 5 mm.
I know banged up shocks on rubber bushings aren't true measuring tools, but they [u]both[/u] seem to fall naturally offset from their mounting points on the swingarm.
At this point I suspect the swingarm, but I sure could use your knowledge and help.
Rear wheel alignment mystery...Rear wheel alignment mystery...
Last edited by R100 on Sat Oct 31, 2015 12:46 pm, edited 2 times in total.
Im no expert but if the chain is in line and you have the correct spacers, then maybe the wheel was not rebuilt with the correct offset.
If some one has a rear wheel without the tyre on it and with the brake plate removed check a straight edge across the wheel (brake side) and measure to the rim but you must bear in mind not all wheel rims are the same. If front and rear wheels are not in line then handling will be off, how do,s the rear wheel look lined up with the front run a board or some string from front to rear. Hope this is some help like I say im no expert but my money is the wheel was not built correct, had a old Triumph like that some years ago. SMBH -
The wheel is the original DID and runs fairly true. I don't know what the offset should be. The distance from the rim to the outside edge of the spacer is the same on both sides (about 77 mm), so I believe the tyre is centred between the two arms of the swing arm. I have had the bike on the road for a bit, up to 80 kph (50 mph) and did not feel any tendency to wander or pull to one side. Appreciate your thoughts, hope we get a think tank" going on this one. It's possible finding a good used swing arm that isn't bent might be a good test.
Last edited by R100 on Sat Oct 31, 2015 8:44 am, edited 1 time in total.
Now I'm embarrassed! I have had a plumb line in my toolbox for decades. And I have already shimmed up the centre stand so the bike is plumb. Thanks for waking me up G. R100
Glad to be of service. Just sitting here in a lonely hotel room so interested to see the oucome. G
'60 C77 '60 C72 '62 C72 Dream '63 CL72
'61 CB72 '64 CB77 '65 CB160 '66 Matchless 350 '67 CL77 '67 S90 '77 CB400F
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
