75 Mark III refurb/mod project

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Re: 75 Mark III refurb/mod project

Postby grandpaul » Thu Apr 08, 2010 1:17 pm

The Mark III rearset brake linkage is very much typical of what you'll find on Dunstall and others. That's simply the way it's done.

Yes, I rode without a top steady OF ANY KIND, and no, it didn't get me killed or even hurt bad. In fact, I didn't notice anything extraordinary about the ride AT ALL. (Of course it was kept under 100, and not pushed hard in switchback twisties)
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Re: 75 Mark III refurb/mod project

Postby grandpaul » Thu Apr 08, 2010 5:48 pm

Top head steady fitted up (thanx for the spiffy polish job, Greg)...

Image

Front steady fitted up (thanx for the powdercoat, Greg)...

Image

Rearsets are ready to install, I might get 'em done tonight...
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Re: 75 Mark III refurb/mod project

Postby swooshdave » Thu Apr 08, 2010 7:14 pm

grandpaul wrote:Top head steady fitted up (thanx for the spiffy polish job, Greg)...

Front steady fitted up (thanx for the powdercoat, Greg)...

Rearsets are ready to install, I might get 'em done tonight...


That's right, install everyone else's parts but not mine. :(
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

Matt
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Re: 75 Mark III refurb/mod project

Postby grandpaul » Thu Apr 08, 2010 10:17 pm

Long day, but got a lot done. Welder did exactly as I instructed, results were not exactly what I anticipated.

Not a lot was needed to make the shifter work, I simply cut a spare shifter, drilled the arm and rotated it 90 degrees, re-shaped the actuator arm a bit and...

Image

The brake side took considerably more work. I tried to trim and hollow out the OEM footpeg spacer block, but ended up having to completely cuto off the lower 2/3 of the block leaving only the upper two mounting holes and the new rearset mounting lug. I then trimmed the cut-off section to retain only the section that the mounting bolt runs through, to use as a spacer/support for the third bolt. The reason for all this was the spacing needed for the brake pedal to clear the kickstarter, required flipping the aluminum mount spacer "inside out"-

Image

My plans to use the brake pedal as-is were foiled, as the curvature around the master cylinder is perfect, but the arc needed to allow the proper range of motion needs to be reworked with another 3" section added.

Also, the Kawasaki kit left only a very short section of threaded shaft, and a much-too-small yoke for the brake pivot clevis. That will all be replaced with a new assembly similar to the one mocked up in the photo, but made with a spare OEM pivot clevis that I had on the shelf.

There, dave; are you satisfied?
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Re: 75 Mark III refurb/mod project

Postby Hortons Norton » Thu Apr 08, 2010 10:38 pm

but the arc needed to allow the proper range of motion needs to be reworked with another 3" section added.
Do you have room for your foot in between the kick start arm and the gearbox? Looks tight. Or are you going around the kicker with another bend?
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Re: 75 Mark III refurb/mod project

Postby ludwig » Thu Apr 08, 2010 11:48 pm

Just when I tought I had seen everything ..:
Image
I think I'll set this one for desktop background for a while !
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Re: 75 Mark III refurb/mod project

Postby Keith1069 » Fri Apr 09, 2010 1:57 am

Yes, I rode without a top steady OF ANY KIND, and no, it didn't get me killed or even hurt bad. In fact, I didn't notice anything extraordinary about the ride AT ALL. (Of course it was kept under 100, and not pushed hard in switchback twisties)
.......and there was me worrying a bit about cornering stresses on the 3/8" bolts and Ludwig asking me if I was 'hoping' they'd be OK. Still wouldn't have taken the risk but I guess those small dia. ISO buffers resist a lot of rotary movement.
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Re: 75 Mark III refurb/mod project

Postby grandpaul » Fri Apr 09, 2010 6:09 am

ludwig wrote:Just when I tought I had seen everything!


"You ain't seen nothing yet"

...as the kids like to say...
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Re: 75 Mark III refurb/mod project

Postby swooshdave » Fri Apr 09, 2010 8:23 am

ludwig wrote:Just when I tought I had seen everything ..:
I think I'll set this one for desktop background for a while !


Really because it's a hella lot more elegant than the Hyde solution.

Image

Stare at that for a while... It's an E-start, just take the damn kickstarter off!
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

Matt
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Re: 75 Mark III refurb/mod project

Postby Hortons Norton » Fri Apr 09, 2010 8:58 am

Dave that's the new lay down kick start, You just lay down beside the bike and kick start it. LOL. :roll:
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Re: 75 Mark III refurb/mod project

Postby swooshdave » Fri Apr 09, 2010 9:43 am

Hortons Norton wrote:Dave that's the new lay down kick start, You just lay down beside the bike and kick start it. LOL. :roll:


People often say how nice Hyde stuff is. They must have just had Dunstall crap to compare it to. :roll:
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

Matt
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Re: 75 Mark III refurb/mod project

Postby chris plant » Fri Apr 09, 2010 4:08 pm

swooshdave wrote:
ludwig wrote:Just when I tought I had seen everything ..:
I think I'll set this one for desktop background for a while !


Really because it's a hella lot more elegant than the Hyde solution.

Image

Stare at that for a while... It's an E-start, just take the damn kickstarter off!

hi swoosh,that would,nt be such a damed kickstart if for some reason you had a flat battery and the only way out of where you were was up :mrgreen:
the older i get the faster i was
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Re: 75 Mark III refurb/mod project

Postby MarshalNorton » Fri Apr 09, 2010 6:47 pm

That's the lazy mans position.
I have my kicker at the 9:00 position on my roadster.
Don't have to lift my leg as high :o
Side straddle kick startin is a dream.
If it stalls hot I flip it out stand on it and away I go.
No exagerated jumping up n down for me.
Increased foot peg clearance too.
Try it you will be amazed at the difference it makes.
Sorry no pics I gotta get the pic thing going.
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Re: 75 Mark III refurb/mod project

Postby nortonspeed » Sat Apr 10, 2010 9:45 am

[quote="grandpaul"]Long day, but got a lot done. Welder did exactly as I instructed, results were not exactly what I anticipated.

Image

Image


GP what about this lean alternative MK3 rearset option:

Image

Image
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Re: 75 Mark III refurb/mod project

Postby swooshdave » Sat Apr 10, 2010 10:04 am

nortonspeed wrote:GP what about this lean alternative MK3 rearset option:


Requires a new MC at the very least.
You probably want to go into town, and find a up to date Jap Bike store,
With a full spares department, a clean workshop, and kean young mechanics.
And ask them if theres a Grumpy Old Bloke out in the Hills, who knows how to fix Real Motorcycles.

Matt
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