My Kingdom for a Brake Disk! By roakaun (Read 686 times)

[roakaun]

Allrighty, here's a new problem for the Scooter Maniacs at large:

Where in Hades name can I find a rear brake disk for a 2008 Mainstreet 300??

Even my local motorcycle repair shop is scratching their heads on this one.

Here's the deal: My wife had so much fun on my Tourista 260, we've kept an eye out for a scooter for her.  What popped up locally was a Mainstreet 300.  After plopping cash for it and riding it home, we found some hidden issues with it.
Mainly, a leaky right front fork seal, and a record-groove screechy rear brake disk.

Local bike shop is getting the seal ordered so that can be fixed, but nowhere to be found is a rear disk!  They are thin enough that they really shouldn't be turned, but that might have to be the solution. Don't want to, but what can one do?  Disk PADS everyone and their dog has, but no disks.

[alleyoop]

Here you go:
Alleyoop

.partsatv.com/REAR-BRAKE-DISC-p/41507.htm" rel="nofollow" target="_blank">.partsatv.com/REAR-BRAKE-DISC-p/41507.htm

.partsatv.com/Linhai-LH300cc-s/95.htm" rel="nofollow" target="_blank">.partsatv.com/Linhai-LH300cc-s/95.htm

[roakaun]

Ah! >clicks link and looks over item<

Gack!

100+ bucks for a disk.... Humm.. might be cheaper to find another Diamo and strip parts off of it, like I did with my old Geo Metro. 'Acourse, the parts you NEED is the ones that are damaged/rotted/missing.

[alleyoop]

So much for your kingdom

[roakaun]

Navah said it was a well monied kingdom. Ah is a cheap skate. that said, I do want a safe ride for da wife.

Perhaps I shall smooth the disk out with my sharp mind...

and a sanding stone.

...

and prolly a new disk. >meh<

[bones113]

Oct 3, 2014 20:32:18 GMT -6 roakaun said:

Allrighty, here's a new problem for the Scooter Maniacs at large:

Where in Hades name can I find a rear brake disk for a 2008 Mainstreet 300??

Even my local motorcycle repair shop is scratching their heads on this one.

Here's the deal: My wife had so much fun on my Tourista 260, we've kept an eye out for a scooter for her.  What popped up locally was a Mainstreet 300.  After plopping cash for it and riding it home, we found some hidden issues with it.
Mainly, a leaky right front fork seal, and a record-groove screechy rear brake disk.

Local bike shop is getting the seal ordered so that can be fixed, but nowhere to be found is a rear disk!  They are thin enough that they really shouldn't be turned, but that might have to be the solution. Don't want to, but what can one do?  Disk PADS everyone and their dog has, but no disks.

I have a mainstreet 300 parts bike. If you want I will check out the condition of the brake disk and let you have it cheap. PM me if you are interested.

[bhinch]

I think you have a disc brake pad problem, not the disc. Replace the pads first and then hear what happens, a cheaper fix.

[roakaun]

I agree, bhinch. The pads ARE prolly bad, but they have damaged the surface of the rear disk, giving it grooves that you can feel. If I just plunk some pads on 'em, I worry that they'll quickly grind off the braking surface and further damage the disk a short time later. I'm going to try to resurface/polish the disk as it stands, but I'll be doing it Shade Tree style.
Scoot on stand, idle up till the rear wheel turns -slowly-, and sand the disk surface with a large knife sharpening stone.
Worse comes to worse, I'll be out a set of pads, and have to replace the disk anyways.

[ellpee]

If you have a micrometer, you might want to measure the original thickness (somewhere near the edge where there's not much wear),then measure again after your polishing process to see what % has been removed. I have no idea how much is too much, but if it were me I'd be concerned if it takes more than 10-15% to get rid of the grooves. Could be dicey in an emergency braking situation.

[roakaun]

Okie dokie, here's the scoop:

Front fork has been rebuilt, so steering and suspension is checked off.
Brake pads replaced in back, and while it stops just fine, i'm still worried that pads will disintigrate quickly from the disk abuse. That issue is pending word from a used disk owner on this site.
NEW issue: rotted tires. Found bulges and cracks that I was negligent in seeing earlier, and have delegated the scoot to the front porch for now. As 'splodie tires are just not fun. Found some Michelin Power Pure SC Scooter Tires from Bike Bandit. $100 for both, free shipping. I'm seeing of my local shop can beat or match that price. Heck, I want these on MY scoot when the time comes, prolly this spring.

While it's nice that gas is pretty cheap nowadays, and filling up one of these is under $10, I feel as if we are having this scoot rebuilt from the ground up, barring the engine, which runs very sweet. As opposed to mine, which idles all over the scale, and still stalls out occasionally when it's cold. Have you noticed it's winter lately? *meh*

[alleyoop]

As opposed to mine, which idles all over the scale, and still stalls out occasionally when it's cold. Have you noticed it's winter lately? *meh*

It idles all over the place because it is running LEAN. You may have an AIR LEAK, check for any cracks in the air tubing going to the carb or cracked intake manifold etc.. If all good no leaks then adjust the fuel mixture screw turn it counter clockwise to give it more fuel.
Alleyoop