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Old 11-21-2011, 06:18 PM   #24646
Chris W
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Metalurgy Question

I'm fitting a Bandit 1200 swingarm to my 79 GS750ES.

The pivot bolt on the Bandit arm is 25mm OD. The Pivot bolt on the GS arm is 19mm.

I need to fit a "sleeve" over the GS bolt to fit the Bandit arm. There is a guy in Vancouver that sells the part, but he wants a left nut for it. Before I go to a machine shop I started looking for something I could just cut to length.

I found this:
http://www.ebay.co.uk/itm/25MM-OD-X-...item4aad08d278

It's just stainless steel though. I'm worried that it's to soft.

What type of steel should I be looking for?
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Old 11-21-2011, 06:23 PM   #24647
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38 degrees on my way to work, 33 on the way home.
By the time you get to work tomorrow morning you'll be thinking today was balmy.
I'll be in the cage tomorrow, and probably until spring
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Old 11-21-2011, 06:30 PM   #24648
Chris W
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Originally Posted by geode View Post
304 SS is "stronger", 316 is more corrosion resistant.

is the sleeve going to ride in any bearings / bushings?

got a schematic?
The sleeve will ride in the Bandit arms pivot bearings.

Schematic?

I took the measurements with a tape measure!
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Old 11-21-2011, 06:37 PM   #24649
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It was 17 up here this morning. I think we maxed out around freezing. Dressed warmly and did lots of technical stuff to keep us working. No Tim Pond riding today, it's too cold for me to make that long pavement run from Carrabassett...
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Old 11-21-2011, 07:13 PM   #24650
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Originally Posted by geode View Post
depending on how the swingarm is assembled, you need the spacers / shims for where the bolt shaft goes through the bearings, and then a spacer to hold them in place, right?

ID?

OD?

given that it is a swingarm, a bushing can easily handle the load / wear, no real need for an actual bearing as nothing revolves.

what about some oil impregnated bronze bushing stock?

McMasterCarr has that stuff.

So might that marine prop shop / machine shop beside New Meadows Marine on the Old Bath Road.

I gots a few tools, if there's anything I can do, give a holler.
All the spacers are still in there. I think if I can just trick the 19MM bolt from the GS into thinking it's a 25MM bolt I should be fine.

I'll try that shop down by New Meadows, and let you know if I need something cut.

Thanks.
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Old 11-22-2011, 09:23 AM   #24651
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Quote:
Originally Posted by geode View Post
depending on how the swingarm is assembled, you need the spacers / shims for where the bolt shaft goes through the bearings, and then a spacer to hold them in place, right?

ID?

OD?

given that it is a swingarm, a bushing can easily handle the load / wear, no real need for an actual bearing as nothing revolves.

what about some oil impregnated bronze bushing stock?

McMasterCarr has that stuff.

So might that marine prop shop / machine shop beside New Meadows Marine on the Old Bath Road.

I gots a few tools, if there's anything I can do, give a holler.

All that.. and why not use the Bandit swingarm bolt? Drill out the frame to fit the larger bolt?
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Old 11-22-2011, 11:21 AM   #24652
Chris W
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Originally Posted by UngaWunga View Post
All that.. and why not use the Bandit swingarm bolt? Drill out the frame to fit the larger bolt?
That's where I was starting to head, but I found some 14 * 20 * 50 (I think I read the caliper wrong last night) bronze bearing sleeves on-line. I'll make a spacer to go between them to keep them over the roller bearing in the swing arm.

Thanks for the help.
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Old 11-22-2011, 11:28 AM   #24653
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Originally Posted by Chris W View Post
That's where I was starting to head, but I found some 14 * 20 * 50 (I think I read the caliper wrong last night) bronze bearing sleeves on-line. I'll make a spacer to go between them to keep them over the roller bearing in the swing arm.

Thanks for the help.
Are you going to need spacers to keep the swing arm lined up?

This is cool. Glad you're diving into it!
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Old 11-22-2011, 11:52 AM   #24654
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Originally Posted by Tslapper View Post
Are you going to need spacers to keep the swing arm lined up?

This is cool. Glad you're diving into it!
I'll need the spacer to keep the bushings generally in the right spot.

The pivot bolt will line it up when the bushings make it fat enough to fit into the arm's roller bearings.

I need to make (rig) some mounts for the dual shock's to mount to the top of the arm now. Will those need to be the same material (same grade of aluminum) as the swingarm?

I need to cut the monoshock mount off the arm. I thought I might be able to make them out of that. The roller bearings in that hunk will be to wide, but I think the bushings from the old swing arm might press into those holes. I was hoping to do this in your shop btw.

I also need to cut the steering stops off the tube, and figure out some new ones that will work with the CBR954 triples.

Then weld tabs onto the frame for the 4 footpegs.

Where are the rules we came up with the the winter bike build?
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Old 11-22-2011, 11:54 AM   #24655
Chris W
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Originally Posted by Tslapper View Post
Are you going to need spacers to keep the swing arm lined up?
I think I just figured out what you asked. No, the width of the bandit arm at the pivot fits right into the GS frame.

Suzuki's good like that!
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Old 11-22-2011, 12:11 PM   #24656
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Originally Posted by Chris W View Post
I think I just figured out what you asked. No, the width of the bandit arm at the pivot fits right into the GS frame.

Suzuki's good like that!

Yeah they are. Cool!
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Old 11-22-2011, 12:34 PM   #24657
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Quote:
Originally Posted by Chris W View Post
I'll need the spacer to keep the bushings generally in the right spot.

The pivot bolt will line it up when the bushings make it fat enough to fit into the arm's roller bearings.

I need to make (rig) some mounts for the dual shock's to mount to the top of the arm now. Will those need to be the same material (same grade of aluminum) as the swingarm?

I need to cut the monoshock mount off the arm. I thought I might be able to make them out of that. The roller bearings in that hunk will be to wide, but I think the bushings from the old swing arm might press into those holes. I was hoping to do this in your shop btw.

I also need to cut the steering stops off the tube, and figure out some new ones that will work with the CBR954 triples.

Then weld tabs onto the frame for the 4 footpegs.

Where are the rules we came up with the the winter bike build?

I had to row back a page to see this. Got the email clue.

Yeah, cutting and welding is my deal. Lets do it!
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Old 11-22-2011, 01:36 PM   #24658
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(I think CJ is the RulesMaster)
I think I've got a definate top ten effort going.
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Old 11-22-2011, 03:06 PM   #24659
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(I think CJ is the RulesMaster)
Haha, no way! I threw some suggestions out there, but I'm not the rules master. In fact, it's looking like I won't even be building a project bike this winter.
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Old 11-22-2011, 03:07 PM   #24660
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Inmate inte may be able to hook you up for a Baja run. Regardless of how and who, do it.
Thanks!

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