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Author Topic: My Suzi T500 Project *It's Alive Video*  (Read 250882 times)

Offline johnu

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Re: My Suzi T500 Project
« Reply #70 on: Feb 03, 2011, 10:46:26 »
Gary, your idea sounds like the way to go but if, as Zooke says the gt750 bushings are bigger I would just use them and bore the hole out to suit.
 
Zooke do you have any size info on the 750 bushings? Are the motor mount bolts a bigger diameter as well as the bushing body?

Offline LOCKARD666

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Re: My Suzi T500 Project
« Reply #71 on: Feb 03, 2011, 14:11:59 »
That bike is a 1960 Greeves Scottish (250cc) trials bike.  I restored it many years ago with my dad back in England.  He had it it shipped over here to California for me.  It has leading link forks and a cast "aluminium" frame section.

that's what caught my eye was the cast downtube... cool.
It's better to wake up dead, than not wake up at all.

Offline zooke581

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Re: My Suzi T500 Project
« Reply #72 on: Feb 03, 2011, 15:05:43 »
Gary, your idea sounds like the way to go but if, as Zooke says the gt750 bushings are bigger I would just use them and bore the hole out to suit.
 
Zooke do you have any size info on the 750 bushings? Are the motor mount bolts a bigger diameter as well as the bushing body?

Bolts are the same size but I will get a measurement on the bushings for you.  Might take some pics and post them up on here for you.

Offline johnu

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Re: My Suzi T500 Project
« Reply #73 on: Feb 03, 2011, 18:30:47 »

Offline johnu

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Re: My Suzi T500 Project
« Reply #74 on: Feb 04, 2011, 11:51:45 »
It is now decided that I will be using the stock steering headstock. With the rear end mods and the shorter fork and smaller diameter front wheel it brings the rake angle to a desirable 24*.  However this does mean I will have to make a new steering stem as the headstock bearing dia. is 48mm and the Kawi steering stem on the 636 fork is 35mm and no bearing of that size exists.  I have a couple of questions about the stem before I get one made though.
 
1. I know that the bearing that goes on the bottom of the stem has both the inner and outer race as a light press fit to both the stem and the headstock.  What about the top bearing?  I realize that the outer race is pressed into the headstock but I assume the inner is a slip fit, what kind of clearance is typical here?
 
 
2.  My bearing seats in the headstock are just about 12.2mm deep as far as I can tell, if I use a 12mm wide tapered roller bearing will this work?
 
3.  What type of material is typically used for the stem?  The Kawi stem is some type of tubular Aluminum but with the 5mm reduction in diameter that I am going with maybe this isn't the best choice.
 
I would appreciate any help you guys can offer.
john.

Offline 50gary

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Re: My Suzi T500 Project
« Reply #75 on: Feb 04, 2011, 14:07:32 »
John, I would use aluminum it's lighter and most sport bike stems I've seen are aluminum.  However a 5 mm reduction in diameter is a huge amount therefore I would also reduce the lightening hole in the center of the stem to 10 mm diameter rather than the 16 mm in the OEM stem.  That would replace the lost material and strength of the stem.  7000 series is a bit stronger than the more common 6061 T6.  As for the height of the bearing I would make a spacer, it could act as a dust seal anyway.   Rule of thumb for press fit is .001" per inch of diameter should be pretty good for pressing your new stem into the lower triple clamp.  Oh yeah the upper bearing would be a close clearance fit.  I would be interested to hear what others have to say, my two cents.
  Cheers, 50gary
« Last Edit: Feb 04, 2011, 20:24:03 by 50gary »
Short track speedskating, cycling, guitars, motorcycles, juggling dynamite. I was born to laugh at Tornadoes.

Offline johnu

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Re: My Suzi T500 Project
« Reply #76 on: Feb 06, 2011, 18:59:28 »
Thanks Gary.  I was thinking maybe it would be better (cheaper) to find a stem from another bike with a 30mm diameter that I could use by pressing a a bushing over the stem which would then press into the bottom triple clamp. Tough part is finding the correct stem with both the right diameter and the right length.

Offline johnu

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Re: My Suzi T500 Project
« Reply #77 on: Feb 08, 2011, 16:34:15 »
No real progress to report, just that I ordered by 48x30x12 steering bearings from All Balls.  Now to find someone to machine up my steering stem for a reasonable price.  I hate paying for stuff that I can do my self... but I don't have the machinery available to me at this point in time so I have to pay!
 
My mind has been wandering to the color scheme I'm going to use, I know I need to worry about finishing the build first but hey color is fun.  At the moment (and this will likely change) I plan to do the crankcases, cylinders and heads satin black with possibly polished clutch and ignition covers.  Expansions I intend to leave unpainted with just a clearcoat.  The 636 forks are silver so I will probably go with silver swingarm then the frame in candy orange powder. Wheels will be gloss black.  Tank and tail unit to be off white (creme) pearl with candy orange stripes down the center.  I would like to get the original Suzuki "S" in there somewhere also.... I need to stop dreaming and get on and do some work!!

Offline johnu

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Re: My Suzi T500 Project
« Reply #78 on: Feb 11, 2011, 12:31:34 »
Seems to be a bit quiet on here regarding the T500 projects, I guess not much progress is being made then.
 
i don't have much to report, I did get the drawing done for my steering stem which I have included in this post.  If anyone can see anything wrong on the drawing please let me know.  Also posted pics of the original stem and triple.
 
I assume that the old stem can just be pressed out of the bottom triple clamp?
 
Any guesses as to how much one would have to pay to have this stem made?

Offline Tim

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Re: My Suzi T500 Project
« Reply #79 on: Feb 11, 2011, 13:26:30 »
I know a guy in Toronto who might be able to lathe one up.  He's been doing some work for me on my hubs.  He can make axles etc. too.  I'll point him to this and let him get in touch.
"Quality . . . you know what it is, yet you don't know what it is. But that's self-contradictory. But some things are better than others, that is, they have more quality. But when you try to say what the quality is, apart from the things that have it, it all goes poof! There's nothing to talk about. But if you can't say what Quality is, how do you know what it is, or how do you know that it even exists? If no one knows what it is, then for all practical purposes it doesn't exist at all. But for all practical purposes it really does exist."