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Common as muck ? YB4 swingarm required

 
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laminator



Joined: 27 Oct 2007
Posts: 320
Location: Midlands

PostPosted: Thu Oct 13, 2011 12:34 pm    Post subject: Common as muck ? YB4 swingarm required Reply with quote

I've had a bit of a problem with a rear sprocket retaining bolt on the YB4 Sad

One of the bolts, although lock tighted in, decided to work loose and has made a bit of a mess of the rear swing arm. The swingarm can probably be repaired to an adequate condition by an ali welder. I was wondering if anybody knows where a new(ish) one may be obtained.

I've checked on the german website but nothing there.

I'm gutted, the bike was shipped to Portugal (where I am at the moment) last weekend and I planned to go to the World Superbikes this weeked on it. Now it's laid up in a garage.

I've taken some pictures and will get them up at some point.
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oily



Joined: 05 Apr 2008
Posts: 4788
Location: worcestershire

PostPosted: Thu Oct 13, 2011 1:00 pm    Post subject: Reply with quote

That's pretty rubbish luck......
gutted for you Crying or Very sad
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Evilchicken0



Joined: 12 May 2010
Posts: 2996
Location: London

PostPosted: Thu Oct 13, 2011 1:53 pm    Post subject: Reply with quote

You might try Padgetts - they raced and imported some Bimotas at some point

You could try Speedie Sie on the PB Forum for a repair
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laminator



Joined: 27 Oct 2007
Posts: 320
Location: Midlands

PostPosted: Sat Oct 15, 2011 10:16 am    Post subject: Reply with quote

I'll drop an email to Padgetts to see if they've still got any bits lying around. The bike was purchased from them in '88.



Here's the damage Sad





It happened on a concrete autoroute. I felt some vibration and put it down to the surface of the road (which vibrates the ZZR1400 aswell). There was no noticable rolling resistance or audible noise. It was only as I walked past it the next morning that I noticed the aluminium deposit on top of the swing arm. I suppose I'm lucky it didn't break and fetch me off, damaging the bike even further. I don't really feel lucky at present.
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Evilchicken0



Joined: 12 May 2010
Posts: 2996
Location: London

PostPosted: Sat Oct 15, 2011 12:31 pm    Post subject: Reply with quote

Mate, you are "Fucking Lucky". If that had let go you'd have been off but chain could have whipped and caught you too.

Of course the bike's a write off and I'll be robbing myself in offering you the scrap value ... call it a tenner and you buy me a drink Very Happy

Seriously though, it's nothing that can't be repaired
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laminator



Joined: 27 Oct 2007
Posts: 320
Location: Midlands

PostPosted: Tue Oct 18, 2011 10:13 pm    Post subject: Reply with quote

Cheers EC, I'll be in touch Rolling Eyes The bike was purchased from Padgetts, I've emailed them but no reply yet.

Since I started my search I have managed to find a needle in a haystack, a bag of magic beans, several hens teeth, and some rocking horse s**t. But no news on a swing arm.

I plan on bringing this one back in my luggage and get it fixed in the UK. If the swing arm is the same as the YB7 I'll strip that out, as it'll probably be off the road over winter, and get it fitted to the YB4 in Portugal to enjoy the weather.

The hunt continues! Maybe I'll find Lord Lucan while I'm at it. Shocked
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Pompey



Joined: 31 Jul 2008
Posts: 2311
Location: Marlborough

PostPosted: Wed Oct 19, 2011 8:36 am    Post subject: Reply with quote

I think it may be quicker and cheaper to find some one to repair it... How about a drag bike builder? They are always modifying swing arms to make them longer? Crying or Very sad
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Bimota's Db2, Db5 ,Ducati's 851' 92, 888' 93, Honda blade' 93, Triumph speed triple' 07, kawasaki zxr 750 k1
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bluedog59



Joined: 14 Nov 2010
Posts: 37

PostPosted: Thu Oct 20, 2011 6:19 pm    Post subject: Reply with quote

That's a bugger, I saw one for sale at an autojumble in Germany a couple of weeks ago. On the subject of what to do,if you are the chap I spoke to in Derby ages ago about Bimotas,there is a chap on your doorstep who may be able to fix that for you if anybody can.
PM me for his details.
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Admin
Site Admin


Joined: 22 Oct 2007
Posts: 508
Location: Stafford, UK

PostPosted: Thu Nov 03, 2011 11:12 am    Post subject: Reply with quote

Hi

Ouch.

Similar happened to a friend when a tyre place left out the spacer between the sprocket carrier and wheel on his ZX6R. After a few hundred miles the bearing in the sprocket carrier collapsed.

All the best

Keith
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crankcase



Joined: 09 Nov 2011
Posts: 387
Location: Frankfurt Germany

PostPosted: Fri Dec 09, 2011 12:31 pm    Post subject: yb8 swingarm? Reply with quote

found this

http://bike-teile.de/index.php?seite=einzel&teilid=737921

seem very helpful- you can click on English instructions- they even translate some important words!

Ian
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http://thecrankcase.com
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