Yamaha SR500 & SR400 Forum

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PostPosted: Fri Oct 02, 2015 1:23 pm 
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Location: Pittsburgh, PA
For anyone that wants the SR500 mag wheels on their SR400's, this is what needs to happen:

Front: Along with the wheel, you will need the disc brake rotor, because the one off your stock wheel will not work.

Simply bolt the rotor to the right side of the wheel (as opposed to the left side on the stock SR500's) and it's ready to bolt on.

Rear: The stock drum brake backing plate and shoes will work, but for the sake of appearances, try to get the SR500 part with the wheel. All other small parts, if you couldn't get them, will cross over.

The rear slides into place just as the stocker was.

You will need 1980-81 SR500 parts to make the complete package work as a bolt-on.

-------------------------------

I'm pretty sure I stated awhile ago that the front was a lot more involved than just swapping the wheel. Quite simply, I WAS WRONG. This really couldn't be a more easy swap.

I like cast wheels for a road bike. No tubes.

That and the front 19" wheel provides me a much better selection of rubber when the time comes.

-------------------------------

Know this, it WILL take more effort to steer the bike, especially if using larger tires.

The trade-off is more stability.

I personally like the feel of the bike more-so now than I did when it was stock.

It feels (handling/steering characteristics) like bikes I rode for a very long time, Sportsters.

The bike also feels like a full-sized bike now.

No more itsy bitsy.

This modification is NOT for everyone (notice I didn't say upgrade) and if you don't have the money to throw around, maybe try to ride and older SR500 before you go down that road.

As for me, I love it, and will not be going back.

And if I want to ride in the dirt, I'm building an XT for that...

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PostPosted: Fri Oct 02, 2015 2:00 pm 
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Pics or it didn't happen. ;)

Just kidding. Did you happen to weigh the wheels? I'm curious to know how much heavier it is than the stock setup. Also, the disc had no offset issue with the stock caliper either?

Thanks!

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PostPosted: Fri Oct 02, 2015 2:16 pm 
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Image...

...speaks a thousand words.

There were no issues at all with clearances. At all.

Everything went together smoothly.

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PostPosted: Fri Oct 02, 2015 2:19 pm 
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I didn't bother weighing the wheels.

Heavy.

And I swear the inertia those wheels create cancel out their weight. :lol:

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PostPosted: Sat Oct 03, 2015 2:50 am 
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i keep debating whether or not i should switch to mag wheels. i assume the sr500 wheels are cheaper than the JP/AUS exclusive sr400 cast wheels?


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PostPosted: Sat Oct 03, 2015 10:22 am 
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Couple of problems come to mind about those JP/AUS wheels.

Besides the cost, is the front is still an 18, which is not a pro for me.

Availability. Is there even still a supply of them to be had? At the time I looked, they were sold out.

I got these wheels part of a basket case/project bike for $500. Far less than the cost of those new sets. Plus they came with next to new tires. And I got the rest of a bike!

So, it was worth it for me. You'll have to determine it for yourself.

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PostPosted: Sat Oct 03, 2015 4:06 pm 
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Beardo wrote:
...I got these wheels part of a basket case/project bike for $500...


I like it :!:

Condition of those wheels looks great for having come off a $500 derelict 8-)


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PostPosted: Sat Oct 03, 2015 5:24 pm 
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Location: OKC, Merica
Those vintage cast wheels are not intended to be run tubeless. The bead area shape is incorrect. That's not to say you can't do it. It will normally say tubeless on the wheel ( spoke or rim) if they're designed for it.
RD Bob.


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PostPosted: Sat Oct 03, 2015 10:08 pm 
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Bob, you are incorrect about that information pertaining to the US 1980-81 mag wheels.

Cast right on the 'spokes' is the message stating 'suitable for tubeless tires'.

I have a '78, but haven't bothered to look to see if they or not.

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PostPosted: Sun Oct 04, 2015 7:52 am 
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I was specifically referring to my personal experience with '78 vintage wheels, forgetting that you'd be using rear drum brake models. I can verify they are not marked tubeless. The SR 500 F owners manual says "these aluminum wheels are not designed for use with tubeless tires" pg 17
RD Bob.


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