Archived Posts

Post by **Admin** » Thu Jan 10, 2008 1:38 am

I don't knw what years were different but the earlier ones had a cross bar on the handle bars and the later years was changed and removed the cross bar.

You may be able to adjust the bars down some to your liking.

Post by **Admin** » Thu Jan 10, 2008 1:39 am

Rob,

Did you find what you needed?

Post by **Admin** » Sun Jan 20, 2008 10:52 am

The heads on my 500 have some white corrosion. I'd like to take them somewhere and have them media blasted (glass beads? walnut shells? soda?) but there's this thing that worries me. My Bultaco came with a spare head that the PO had bead blasted. The guy who did the work blasted everything, including the spark plug threads, the combustion chamber, and the gasket surface. He must have used a lot of air pressure because he cut it up pretty good (or I should say pretty bad).

What do you guys do to protect those areas when you have parts blasted? I don't want to have two more clean but useless heads.

Or am I worrying about nothing?

Debby

Post by **Admin** » Sun Jan 20, 2008 11:41 am

ive used sand and glass media, glass is awesome!! all i do is use masking tape where i dont want parts to get hit, and keep the nozzle far enough away that the surface is getting hit with the media, and not Blasted apart by it.

Post by **Admin** » Sun Jan 20, 2008 11:56 am

Generally, if it si cut up to much, he used material that was too course and/or too hard. Glass beads, walnut shells, even plastic beads will probably clean up what you are talking about. Soda may or may not work depending on how bad it is. I use finely crushed garnet a lot.

Fine sand will work OK if you stay back from the parts a little farther than normal.

Wayne

Post by **Admin** » Sun Jan 20, 2008 12:31 pm

PUT AN OLD SPARK PLUG IN TO STOP THREAD FROM BEING DAMAGE.

Post by **Admin** » Mon Jan 21, 2008 2:29 pm

what john said, and i find that soda works well, costs less and easier to clean up afterwards.

Post by **Admin** » Wed Jan 23, 2008 8:29 am

debby wrote:My Bultaco came with a spare head that the PO had bead blasted. The guy who did the work blasted everything, including the spark plug threads, the combustion chamber, and the gasket surface. He must have used a lot of air pressure because he cut it up pretty good (or I should say pretty bad).
Debby

Debby,
I can repair those spark plug threads for you. And the gasket surface can be decked unless they guy dug divots in it. Let me know if you need that head fixed.

Geez

Post by **Admin** » Wed Jan 23, 2008 6:38 pm

Can you tell me what a 36 tooth sprocket is meant to add/do?

I've just arrived at the sprocket end of my T500R during the rebuild and noticed that it is a 36 - 530. So, the PO must have read the aforementioned article also! As this is the only T500 I've ridden, I can't compare it's performance to the stock set up - semed to ride ok before the tear down (but then, I've only got a Kwaka Triple to compare it to

).

It will obviously be easier to just put this sprocket back on. But what am I missing/ gaining compared to the stock arrangement?
Thanks, Mike

Post by **Admin** » Thu Jan 24, 2008 12:01 am

Higher revs for the same speed giving lower top speed but better acceleration

Post by **Admin** » Mon Jan 28, 2008 4:07 pm

Can someone show me a pic of the cable routings for the T500R e.g. brake cable down between clocks or between the headlight arm and clock or...? etc

Also, which bunch of wires goes thru which hole in the headlight? The shell has two big holes, one above the other. I'm guessing the main wiring goes up thru the bottom hole. Does the light/indicator wire go thru the top one or bottom one and then into the shell?

Picky I know but I've spent so much time on it now - may as well get it all right.
Ta, Mike

Post by **Admin** » Tue Jan 29, 2008 8:36 pm

I could send some pictures of mine, But I am not sure they are right. My bike was in bad shape when I started. Who knows how many times they were moved. But if it will help. Let me know Tom W.

Post by **Admin** » Sun Feb 03, 2008 1:26 am

Thanks for that. Any photos would be a good place to start.
Mike

Post by **Admin** » Sun Feb 03, 2008 10:20 pm

While putting the steering head bearing back to together after cleaning and geasing, I dropped one of the balls! Fell on frame and.... ???

Anyway, they were in good shape. The top race that slides down on top of top bearings just starting to score ever so slightly so think may be ok. All else were great. Grease was hard and dried out.

Anyone know where I might get a replacement ball? Or, will I just have to try to find a complete bearing?

Post by **Admin** » Mon Feb 04, 2008 9:17 am

You would be better served to put in tapered roller bearings. It is an upgrade that almost everyone does to their old bikes. Kits are available for about $30 and they are much smoother that the loose balls and notched out races and most everyone trash cans the old ball bearing when they convert, so finding used ones may not be that easy.

Wayne

Archived Posts

Beadblasting question

Re: Beadblasting question

Cable and Wiring routes - T500R

Steering head bearings