Swinging arm repair ?

Bitza · 14-01-2019, 09:24 PM

Hi All,

I have a 1994 Monster and am presently dismantling for a revamp, along the way I have found play at the anchor point on the swinging arm where the bottom of the shock is located. Basically the holes where the pivot bolt goes has worn, has anybody experience of making good such wear or has a replacement s/arm in good condition which they would part with?

Thanks Bitza.

Nickj · 14-01-2019, 10:29 PM

You could go visit an engineering company, have the pivot holes enlarged and then a bearing shim fitted. There's probably enough meat on the pivots.
Autotech on the haverscroft industrial estate, that's ought to be not far from you do some bike based work and might be worth talking to but you may well find it cheaper to get a used swinging arm.

Darkness · 15-01-2019, 08:21 AM

Quote:

Originally Posted by Nickj

"...............you may well find it cheaper to get a used swinging arm.

A steel swing arm can be fitted instead, with matching hugger, and they are cheap, but the 888 ally type originally fitted in ‘94 are scarce with owners now asking for £400 to £1000!

I’ve been looking for a spare one for some time, but not at those prices!

Apparently they are popular with builders of Ducati TT1 & 2 replicas as well as 851 and 888 owners which has outstripped supply.

Darkness · 15-01-2019, 08:25 AM

This one’s pretty, but not original:

https://www.ebay.co.uk/itm/Ducati-88...kAAOSwwPdcCrce

Bitza · 15-01-2019, 02:37 PM

Thanks for that Darkness, what a beautiful bit of kit, Just need to find the odd £5K now and it's problem solved. Bitza

mickj · 15-01-2019, 03:08 PM

He is open to offers

Darren69 · 15-01-2019, 06:50 PM

That's so cool but the sort of thing you would build a very special bike around, like a factory 888 or something like that. Have you tried Metmachex? I picked up one of theirs for an ST4 reasonably cheap a while back but not fitted it yet, and although not 100% billet CNC like that one they are like IIRC 5 CNC pieces welded together and like I said it was cheap for what it is. Maybe worth giving them a call as they may have done 888 type arms before?

utopia · 16-01-2019, 12:30 AM

Personally, I don't like the billet one in the link.
It shows off its cleverly machined internal webbing at the expense of cleanliness and practicality.
No problem for a race bike but fairly dire on a roadster, and to no great effect anyway.

A couple of years ago it was possible to pick up an ally swingarm for £150 to £200, but I don't know if that has changed.
I got very lucky (after a 2yr search) and nabbed mine for £50 .. but I think that was ridiculously cheap.

I don't suppose you would want it but I still have the old steel one if its of any use to you.

Nasher · 16-01-2019, 07:17 AM

[QUOTE=utopia;562125]Personally, I don't like the billet one in the link.
QUOTE]

I'd agree, I don't like it at all.

And as you've suggested, I certainly wouldn't want to have to keep it clean.

Nasher.

Jez900ie · 16-01-2019, 07:44 AM

What benifits woulkd I get for my £5 grand?

Nasher · 16-01-2019, 07:50 AM

You'd get something nobody else has.

Oh, and you'd be riding around using a swingarm that hasn't undergone any stress analysis, load testing, etc, and that's been made by somebody else for what sounds like a show bike!

Nasher.

mickj · 16-01-2019, 09:12 AM

Quote:

Originally Posted by Jez900ie

What benifits woulkd I get for my £5 grand?

A handmade KTM swing arm

Jez900ie · 16-01-2019, 11:07 AM

So no tangible benifit whatsoever then.

Thats good, I need my £5K for other stuff anyway!

Nasher · 16-01-2019, 11:17 AM

It 'could' be stiffer and lighter.

But you wouldn't know that until you'd stumped up.

Nasher.

TimM900 · 16-01-2019, 03:35 PM

Take it up to Competition Fabrications, on the edge of Attleborough, 01953 454573, it is one of the finest places for one-off engineering anywhere. I'm sure they will be able to perform a top notch repair without busting the bank account.

14-01-2019, 09:24 PM	#1
Bitza Bronze Member Join Date: Jul 2006 Location: Poole Bike: M900ie Posts: 468	Swinging arm repair ? Hi All, I have a 1994 Monster and am presently dismantling for a revamp, along the way I have found play at the anchor point on the swinging arm where the bottom of the shock is located. Basically the holes where the pivot bolt goes has worn, has anybody experience of making good such wear or has a replacement s/arm in good condition which they would part with? Thanks Bitza. __________________ Bitza

14-01-2019, 10:29 PM	#2
Nickj Too much time on my hands member Join Date: Jun 2007 Location: Forest Of Dean Bike: S2r Posts: 3,188	You could go visit an engineering company, have the pivot holes enlarged and then a bearing shim fitted. There's probably enough meat on the pivots. Autotech on the haverscroft industrial estate, that's ought to be not far from you do some bike based work and might be worth talking to but you may well find it cheaper to get a used swinging arm. __________________ "The final measure of any rider's skill is the inverse ratio of his preferred Traveling Speed to the number of bad scars on his body." Song of the sausage creature

15-01-2019, 08:25 AM	#4
Darkness . Join Date: May 2007 Location: Stockbridge Bike: M900 Posts: 1,984	This one’s pretty, but not original: https://www.ebay.co.uk/itm/Ducati-88...kAAOSwwPdcCrce __________________ Original and Best since 1993

15-01-2019, 02:37 PM	#5
Bitza Bronze Member Join Date: Jul 2006 Location: Poole Bike: M900ie Posts: 468	Thanks for that Darkness, what a beautiful bit of kit, Just need to find the odd £5K now and it's problem solved. Bitza __________________ Bitza

15-01-2019, 03:08 PM	#6
mickj Registered User Join Date: Jun 2018 Location: Clevedon Bike: M1200s Posts: 552	He is open to offers __________________ Keep the rubber side down. Mick

15-01-2019, 06:50 PM	#7
Darren69 Transmaniacon MOC Join Date: Sep 2013 Location: Sutton In Ashfield Bike: Multiple Monsters Posts: 6,022	That's so cool but the sort of thing you would build a very special bike around, like a factory 888 or something like that. Have you tried Metmachex? I picked up one of theirs for an ST4 reasonably cheap a while back but not fitted it yet, and although not 100% billet CNC like that one they are like IIRC 5 CNC pieces welded together and like I said it was cheap for what it is. Maybe worth giving them a call as they may have done 888 type arms before? __________________ Roast Beef Monster! Termignoni and Bucci - Italian for pipe and slippers! S4 Fogarty, S4R 07T, 748, Series 1 Mirage

16-01-2019, 12:30 AM	#8
utopia No turn left unstoned Join Date: Jun 2010 Location: leicester Bike: M750 Posts: 4,545	Personally, I don't like the billet one in the link. It shows off its cleverly machined internal webbing at the expense of cleanliness and practicality. No problem for a race bike but fairly dire on a roadster, and to no great effect anyway. A couple of years ago it was possible to pick up an ally swingarm for £150 to £200, but I don't know if that has changed. I got very lucky (after a 2yr search) and nabbed mine for £50 .. but I think that was ridiculously cheap. I don't suppose you would want it but I still have the old steel one if its of any use to you.

16-01-2019, 07:17 AM	#9
Nasher Registered User Join Date: Jul 2014 Location: Portsmouth Bike: M900 Posts: 1,510	[QUOTE=utopia;562125]Personally, I don't like the billet one in the link. QUOTE] I'd agree, I don't like it at all. And as you've suggested, I certainly wouldn't want to have to keep it clean. Nasher. __________________ Heaven doesn't want me, and Hell is afraid I'll take over.

16-01-2019, 07:44 AM	#10
Jez900ie Pleasantly surprised! Join Date: Nov 2016 Location: Stoke on Trent Bike: M900ie Posts: 780	What benifits woulkd I get for my £5 grand? __________________ Monsters don't hide under the bed, they sleep inside the shed

16-01-2019, 07:50 AM	#11
Nasher Registered User Join Date: Jul 2014 Location: Portsmouth Bike: M900 Posts: 1,510	You'd get something nobody else has. Oh, and you'd be riding around using a swingarm that hasn't undergone any stress analysis, load testing, etc, and that's been made by somebody else for what sounds like a show bike! Nasher. __________________ Heaven doesn't want me, and Hell is afraid I'll take over.

16-01-2019, 11:07 AM	#13
Jez900ie Pleasantly surprised! Join Date: Nov 2016 Location: Stoke on Trent Bike: M900ie Posts: 780	So no tangible benifit whatsoever then. Thats good, I need my £5K for other stuff anyway! __________________ Monsters don't hide under the bed, they sleep inside the shed

16-01-2019, 11:17 AM	#14
Nasher Registered User Join Date: Jul 2014 Location: Portsmouth Bike: M900 Posts: 1,510	It 'could' be stiffer and lighter. But you wouldn't know that until you'd stumped up. Nasher. __________________ Heaven doesn't want me, and Hell is afraid I'll take over.

16-01-2019, 03:35 PM	#15
TimM900 Registered User Join Date: May 2016 Location: Norwich Bike: M900 Posts: 48	Take it up to Competition Fabrications, on the edge of Attleborough, 01953 454573, it is one of the finest places for one-off engineering anywhere. I'm sure they will be able to perform a top notch repair without busting the bank account.

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