- Joined
- Jan 18, 2020
- Messages
- 644
Finished fixing most flaws I've found on an ex. danish military B40. PO seems to have little knowledge on how to set up an old british motorcycle.
It is a good looking well painted bike with a lot of dirt bike mods.
What I had to do to get it a decent runner.
Bad front brake. Loosen front axle, pull lever and retighten.
Lens on headlamp, the TOP mark pointing to the right.
Electric system total mess, total rewiring. A number of improvements over original.
Home made tank holding bolt fixings and wrong rubbers made the tank in metallic contact with frame.
The short saddle fastened so that I had to remove rear mudguard to get it off.
Much axial and radial play in swingarm. These machines have silentblocs like a Dommie. PO had not managed to tighten the swingarm
axle nut enough. So inside of silentbloc was free to rotate on the axle. Steel to steel without lubrication.
Solved with new axle and axial shims.
Adjusting ignition timing.
Loud popping rolling back twist grip. Found that the high level exhaust could be pushed into head another 1/4".
New bracket made. Also had to cut off an inch at rear end of exhaust pipe. Now silencer can be removed without first removing rear shock.
PO or someone before had fitted an old worn Monobloc from a -61 T110. And fitted a too long choke slide, now removed.
Also ignoring the fact that a bike intended for gravel roads should not be fitted with an open bellmouth.
Worst carb problem was that idle could not be adjusted without removing the battery.
Solved with relocating and making a new battery tray. Saved 6.6lbs.
Not to mention the mixture of Metric, UN, W and cycle threads.
Now quite enjoyable to ride, if you're not in a hurry.
It is a good looking well painted bike with a lot of dirt bike mods.
What I had to do to get it a decent runner.
Bad front brake. Loosen front axle, pull lever and retighten.
Lens on headlamp, the TOP mark pointing to the right.
Electric system total mess, total rewiring. A number of improvements over original.
Home made tank holding bolt fixings and wrong rubbers made the tank in metallic contact with frame.
The short saddle fastened so that I had to remove rear mudguard to get it off.
Much axial and radial play in swingarm. These machines have silentblocs like a Dommie. PO had not managed to tighten the swingarm
axle nut enough. So inside of silentbloc was free to rotate on the axle. Steel to steel without lubrication.
Solved with new axle and axial shims.
Adjusting ignition timing.
Loud popping rolling back twist grip. Found that the high level exhaust could be pushed into head another 1/4".
New bracket made. Also had to cut off an inch at rear end of exhaust pipe. Now silencer can be removed without first removing rear shock.
PO or someone before had fitted an old worn Monobloc from a -61 T110. And fitted a too long choke slide, now removed.
Also ignoring the fact that a bike intended for gravel roads should not be fitted with an open bellmouth.
Worst carb problem was that idle could not be adjusted without removing the battery.
Solved with relocating and making a new battery tray. Saved 6.6lbs.
Not to mention the mixture of Metric, UN, W and cycle threads.
Now quite enjoyable to ride, if you're not in a hurry.
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