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June 24th, 2017, 01:13 AM   #521
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Vibrations are still killing! Last practise the rear shock lower fork, broke in two. I came over a crest without the weight of the rear wheel and had a really good look at my front mud guard... Fortunately I stayed on my wheels but the motorcycle looked like a dragbike, all of a sudden.

Back to the workshop to try to rebalance the crank. Hurts me to drill out heavy metal! Boo-hoo! Expensive chips! 😉 I didn't need to have this margin with 20mm diameter inserts. 18mm would have been enough. Anyhow, now the BF will finally be 0,62!
Now assembly and test start

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June 24th, 2017, 02:27 AM   #522
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At what stage do you think you will return to using the counter balancer?
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June 24th, 2017, 02:45 AM   #523
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Originally Posted by spanner View Post
At what stage do you think you will return to using the counter balancer?
Not sure. 😉
If this doesn't work out, I may have a go with mounting the front end of the engine in rubbers or making a CB of the water pump shaft or quit with Supermono. Going back to the OEM CB means loosing the spherical roller bearing mains. I will NOT return to OEM size mains and the 5-6h life length they had. We'll see! 😊

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August 21st, 2017, 10:26 AM   #524
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One Öhlin OEM lower rear shock mount broke and one homemade broke. Both from 7075 alu. Now high tensile steel... I've broken two rear shock piston shaft aswell. A new CB is next upcoming design.

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August 21st, 2017, 10:31 AM   #525
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To extreme problem extreme solution ...hope you will get there soon
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August 21st, 2017, 12:03 PM   #526
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Looking good dr-c !

Tony foale "if aluminium was any good they would make steel out of it "

Ktm rfs balancer ?
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August 21st, 2017, 02:07 PM   #527
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Pre-2001 engine with balancer forward of crankshaft and main bearings closer together maybe?

I remember being enamored with the idea of the counter-rotating counter balancer on the '01 to '08 engines. These days I like the old ones with no balancer, no e-start, and no oil pump. Keep it simple and change the oil A LOT.
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August 21st, 2017, 08:46 PM   #528
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Originally Posted by thorgan View Post
Pre-2001 engine with balancer forward of crankshaft and main bearings closer together maybe?

I remember being enamored with the idea of the counter-rotating counter balancer on the '01 to '08 engines. These days I like the old ones with no balancer, no e-start, and no oil pump. Keep it simple and change the oil A LOT.
The spherical roller mains are already located directly against the crank webs.

That was the vision of mr Lars Nilsson (Folan), although being very persistent, even he had to let go of that idea!

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August 25th, 2017, 11:53 AM   #529
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Oh joy!
Had a blast on a trackday yesterday which myself and 7 compadres organised! 6 sessions in a modest pace, on my 888, as an instructor, but 2 full sessions without any problems on my supermono! 16 laps with a big smile! Yesss!

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Last edited by Dr_C; August 26th, 2017 at 08:26 AM.
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August 25th, 2017, 11:53 PM   #530
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No problems?!?
You must be doing something wrong!! Tear it apart and check whats happening, thats not normal.

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