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Farmingstock |
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Farmingstock Trackday Trickster
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Farmingstock |
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Farmingstock Trackday Trickster
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Nobby the Bastard |
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Nobby the Bastard Harley Gaydar
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Farmingstock Trackday Trickster
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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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Posted: 20:56 - 18 Nov 2022 Post subject: |
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Farmingstock wrote: |
Yeah I thought that myself, the bike has been stood for quite sometime, I have only riden it probably 10 mins max, I think I’ll give it a good 30 minute ride when it’s dry and see how it feels, maybe some sticky rings, if nothing changes I’ll strip the top end and rebuild it. |
Well, you've established it's not running lean. Maybe Italian tune up time. Give it a longer run, you may find it clears its throat and takes off like a scalded cat in a dense haze of blue smoke after a bit. It's barely had time to get up to temp. I've had strokers do that before if they've sat for a bit until they burn off all the old oil residue. ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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Farmingstock |
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Farmingstock Trackday Trickster
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Posted: 11:37 - 19 Nov 2022 Post subject: |
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Decided to strip the top end after giving it a good 30 minutes of ragging, what a pain that was, the barrel won’t come off as it hits the frame, so engine out job, the bolts that hold the engine in won’t come out due to the foot pegs, which are part of the frame, the foot pegs won’t come off due to the rear brake, never worked on anything as awkward in my life!!
Anyway, the rings are free (will check gap in barrel), the bore is reasonable, but there is oil in the crank, so looking like the crank seal has gone maybe?? |
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stinkwheel |
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stinkwheel Bovine Proctologist
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Farmingstock |
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Farmingstock Trackday Trickster
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stinkwheel |
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stinkwheel Bovine Proctologist
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Farmingstock |
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Farmingstock Trackday Trickster
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stinkwheel |
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stinkwheel Bovine Proctologist
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Posted: 23:06 - 19 Nov 2022 Post subject: |
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You can't really tell until the selector mechanism is also on.
Rotate the final drive output shaft and see that everything that turns is turning freely and you can move the clusters along the shaft so the dogs fully engage. Make sure all the selector forks are sat in a groove
The biggest mistake you could make is one of the shafts or pins not being seated properly in its bearing/hole then tightening down the crankcase bolts. That would either bend the shaft or punch a hole in the case.
If you've got a cluster in backwards, it just wont work rather than damaging anything.
Next time take more photos during disassembly!
That said, it's easy done even with photos. Last gearbox I rebuilt I put the whole lot in backwards on the first attempt and had to take it all apart again.
EDIT: It's been ages since i split a vertical engine but effectively what happens is that selector drum (the round black thing at the top) is rotated by the gearshift. This moves the selector forks side to side in the grooves in the drum. Each fork is holding one of the gear clusters and moves them sideways along the shaft so different clutsters engage with one another in different gears.
Good video on the general principal. https://youtu.be/g8xnIFf4id4 ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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Farmingstock |
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Farmingstock Trackday Trickster
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Posted: 17:22 - 20 Nov 2022 Post subject: |
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stinkwheel wrote: | You can't really tell until the selector mechanism is also on.
Rotate the final drive output shaft and see that everything that turns is turning freely and you can move the clusters along the shaft so the dogs fully engage. Make sure all the selector forks are sat in a groove
The biggest mistake you could make is one of the shafts or pins not being seated properly in its bearing/hole then tightening down the crankcase bolts. That would either bend the shaft or punch a hole in the case.
If you've got a cluster in backwards, it just wont work rather than damaging anything.
Next time take more photos during disassembly!
That said, it's easy done even with photos. Last gearbox I rebuilt I put the whole lot in backwards on the first attempt and had to take it all apart again.
EDIT: It's been ages since i split a vertical engine but effectively what happens is that selector drum (the round black thing at the top) is rotated by the gearshift. This moves the selector forks side to side in the grooves in the drum. Each fork is holding one of the gear clusters and moves them sideways along the shaft so different clutsters engage with one another in different gears.
Good video on the general principal. https://youtu.be/g8xnIFf4id4 |
Thank you for your help, much appreciated, I have found a video of someone rebuilding the engine completely, still on the look out for a piston, all the ones I can find are all over size, but will keep looking. |
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Old Thread Alert!
The last post was made 1 year, 156 days ago. Instead of replying here, would creating a new thread be more useful? |
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