front wheel

discussions specific to the 750 Paso

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plasmid
Posts: 366
Joined: Mon May 10, 2010 9:49 pm
model: 750 Paso
year: 1987
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front wheel

Post by plasmid »

*** jump a few posts down - figured out the spacer is missing ***


What's up guys. Hope you're all swell.

Finally got around to having the original Michelins replaced and I already regret it ;)
Michelin's looked better.

The wheel sits a bit differently and tire is super close to the mud guard on the LH side. (correct size tire)
Before, the wheel spindle was flush on the LH side and sticking out a bit more on the RH side - maybe it wasn't screwed it completely.

The manual says to screw it in completely, which is what the mechanic did now.

But I'm wondering if he missed a spacer. The manual mentions a spacer on the RH side.
Can you tell me if that spacer is installed in the photos below?


If the spacer's installed and everything looks ok, can I back out the spindle a bit so it's flush on the LH side
and tighten everything back up? Would that move the wheel to the right a bit?

Basically, I want it to look like before - see the photos marked BEFORE in the next post.

Thanks much.
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paso wheel 3.jpg
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paso wheel 2.jpg
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paso wheel.jpg
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Last edited by plasmid on Fri Aug 30, 2019 10:22 pm, edited 3 times in total.
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plasmid
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Joined: Mon May 10, 2010 9:49 pm
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year: 1987
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Re: front wheel

Post by plasmid »

before
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paso wheel before 4.jpg
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paso wheel before.jpg
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plasmid
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Re: front wheel

Post by plasmid »

I backed the spindle out some. Does it look like that spacer is in there?
I really have no idea what it's supposed to look like.

I find it strange that before the spindle was sitting differently.
I can't see the previous mechanic not tightening it completely.
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paso wheel check.jpg
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plasmid
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Re: front wheel

Post by plasmid »

Thought some more about this. I think they're separate issues.

The washer is definitely missing - found some older photos.

But, it's the speedo drive that determines where the wheel sits.

The tire being closer to the mud guard on one side may be due to the slightly different profile compared to the Michelin's.


Here's the info on that washer that goes on the RH side. If anyone has an extra one, I would be interested in buying it.

It's part # 037077310

"2mm thick with an ID of 17mm and OD somewhere around 22mm-24mm"
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plasmid
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Re: front wheel

Post by plasmid »

Went back to the shop - I think I found the original washer.

For reference the dimensions are: 1.5mm thick, 17mm ID, 26.9 OD

Didn't install it yet cause that mechanic wasn't there, but it seems to line up as before.

In any case, if anyone has an extra 1 or two I'll buy them.
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plasmid
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Re: front wheel

Post by plasmid »

Looking at the parts manual (page 34) the speedo drive (part number eight) is made up of two parts, one if which is a washer.

Can anyone confirm if there's a washer between the speedo drive and the fork leg?


In the workshop manual there's only mention of a washer on the RH side,
but the pictures show washers on both sides. That might explain why
the new tire sits closer to the mud guard on the LH side.


Man, you have to supervise some 'professionals' like babies,
it's unbelievable.
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paso750
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Re: front wheel

Post by paso750 »

The washer is 3mm thick. The washer of the speedo drive exists only in the parts catalog, not in real life. I had tried a 1mm shim once but with it the brake discs were not centered in the calipers anymore.
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plasmid
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Re: front wheel

Post by plasmid »

Put the washer that I found which looked correct on.

Looks about right, although, I'd still like to confirm if you guys have a washer on the speedo drive side also.
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paso wheel new2.jpg
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plasmid
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Re: front wheel

Post by plasmid »

paso750 wrote:The washer is 3mm thick. The washer of the speedo drive exists only in the parts catalog, not in real life. I had tried a 1mm shim once and with it the brake discs were not centered in the calipers.

Thanks. The one you got is def. thicker than the one I got on there now - this one's about 1.5mm

I think my spindle was further in before than yours.

I'm not 100% sure the washer I found it's the correct one but I thought it would be
a pretty big coincidence to find a washer with the correct 17mm ID near the mechanic's workstation.

Should have taken photos before going there. Can't trust these clowns.


ps: thanks for confirming no washer on the speedo side. That''s really good to hear.
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plasmid
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Re: front wheel

Post by plasmid »

BTW - can you tell me the outer diameter of your washer?

I did find another that's 2.5mm thick, 17.2 ID and 33.5 OD
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paso750
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Re: front wheel

Post by paso750 »

mine is about 29mm od.

The pic below is from Stein Dinse. As you see the washer is thicker than 1.5mm.
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plasmid
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Re: front wheel

Post by plasmid »

Yeah, I saw the one from Dnse, which is NLA right now. Is that what you got?

Guess I'll try the bigger one also and see.

Thanks for the input - much appreciated.
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plasmid
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Re: front wheel

Post by plasmid »

paso750 wrote:mine is about 29mm od.
In the picture it looks like 24mm. Did you mean 24 or 29?

Is that the washer that Dinse was selling?
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paso750
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Re: front wheel

Post by paso750 »

If you look at the sliding caliper it shows almost 29mm. How do you read 24mm?

Unless one of the past owners replaced the washer mine is still the original one.
Imo there's not the one correct size for that washer. The question to ask is why is there a washer in the first place? It should not be necessary. Who knows maybe there was a change in the design of the rims which then became narrower or the axle was used on other models before or ... The only reason there is a washer must be that when the axle is fully screwed into the left fork leg the rim is not fully tightened and still has axial play. Maybe a 1.5 or 2mm washer is enough to eliminate that. I never measured that.
The outer dimensions are not that important. It would be sufficiant that the washer has the same od as the axle. It only has to press against the inner bearing race. Of course the washer must be smaller than the outer bearing race or it would cause the bearing to lock.
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plasmid
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Joined: Mon May 10, 2010 9:49 pm
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year: 1987
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Re: front wheel

Post by plasmid »

paso750 wrote:If you look at the sliding caliper it shows almost 29mm. How do you read 24mm?

Unless one of the past owners replaced the washer mine is still the original one.
Imo there's not the one correct size for that washer. The question to ask is why is there a washer in the first place? It should not be necessary. Who knows maybe there was a change in the design of the rims which then became narrower or the axle was used on other models before or ... The only reason there is a washer must be that when the axle is fully screwed into the left fork leg the rim is not fully tightened and still has axial play. Maybe a 1.5 or 2mm washer is enough to eliminate that. I never measured that.

Don't know if I would feel that but I just did 30 kms without the washer and I hit 140 km/h.
Also, based on some of the other photos on the server, some bikes don't have the washer anymore - the spindle is sticking out on the LH side like mine did.

The outer dimensions are not that important. It would be sufficiant that the washer has the same od as the axle. It only has to press against the inner bearing race. Of course the washer must be smaller than the outer bearing race or it would cause the bearing to lock.
Right, I just want to get an OEM spec part.
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