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Author Topic: The Stock Bike  (Read 13132 times)

Offline jpmobius

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Re: The Stock Bike
« Reply #30 on: Jun 23, 2015, 21:51:43 »
A little die grinder action.
And a trip through the glass beader.
And done.  I will make some dies to form up some stone screens later.  The screens will get epoxied in on the inside of the backing plate after it gets painted.
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

1973 RD350 Yamaha build  http://www.dotheton.com/forum/index.php?topic=66498.0

Offline jpmobius

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Re: The Stock Bike
« Reply #31 on: Jun 23, 2015, 21:59:58 »
I turned off the cast in fins on this hub on a lathe and polished it up before deciding I wanted the hubs to be painted black so I had to turn down another one.  I figure I will use this on something someday, and thought it easier to make another for paint rather than destroy the polish and paint over it.  This started out every bit as rough as the brake backing plate.

Like I said earlier, I bought a bunch of crap parts all at once and here is a pic of what I had to pick from.
« Last Edit: Jun 23, 2015, 22:09:26 by jpmobius »
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

1973 RD350 Yamaha build  http://www.dotheton.com/forum/index.php?topic=66498.0

Offline canyoncarver

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Re: The Stock Bike
« Reply #32 on: Jun 23, 2015, 22:11:39 »
I'm in.  Great stuff jp man.
--
KZ400 The Rabbit
YZF750/1000R The Fly
KZ 750 Twin
ZRX 1100
65 Norton, My damn Shovelhead chop
more YZF750R's, the KZ's, a Zephyr750...and the unfinished 75' CB550 cafe.
--

Offline jpmobius

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Re: The Stock Bike
« Reply #33 on: Jun 23, 2015, 22:15:08 »
Here I am getting the front hub ready for the lathe.  Iím just mowing this down close with a die grinder so it is less work on the lathe.  Actually, I just noticed that this is not the hub that is going on this bike.  i used a 1974 TX500 (Yamaha) front hub because a second disc was an option on that bike.  The hub is otherwise identical to the 350.  This bike is only using a single disc, but I am reversing the fork legs in order to move the heavy cast iron caliper behind the leg instead of in front of it.  this moves a very heavy mass much closer to the steering center of rotation, which will increase the assembly's natural frequency and promote speed wobble at a higher speed - hopefully higher than the bike is capable of.  Of course, the 350 hub would have worked just fine as well for this, except the mechanical speedometer drive would also be reversed and drive the speedo backwards.  The 500 hub can be installed the right way 'round and make everything work just fine - just swap out which side the disc goes on.
« Last Edit: Jun 23, 2015, 22:53:32 by jpmobius »
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

1973 RD350 Yamaha build  http://www.dotheton.com/forum/index.php?topic=66498.0

Offline jpmobius

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Re: The Stock Bike
« Reply #34 on: Jun 23, 2015, 22:16:56 »
Don't know how I get anything done in this mess!  You can see both hubs after the lathe work, and another (polished) backing plate on the far right.  Figured I would make one for the polished hub I was not using while I was at it.
« Last Edit: Jun 23, 2015, 22:18:48 by jpmobius »
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

1973 RD350 Yamaha build  http://www.dotheton.com/forum/index.php?topic=66498.0

Offline jpmobius

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Re: The Stock Bike
« Reply #35 on: Jun 23, 2015, 22:28:32 »
This should be a very interesting build!  Watching.

I'm in.  Great stuff jp man.

Thanks gentlemen. 
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

1973 RD350 Yamaha build  http://www.dotheton.com/forum/index.php?topic=66498.0


Offline jpmobius

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Re: The Stock Bike
« Reply #37 on: Jun 23, 2015, 22:54:23 »
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

1973 RD350 Yamaha build  http://www.dotheton.com/forum/index.php?topic=66498.0

Offline jpmobius

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Re: The Stock Bike
« Reply #38 on: Jun 23, 2015, 22:56:47 »
Rebuilding the front forks.  Race Tech springs and cartridge emulators.  Guess I misplaced the springs!
« Last Edit: Jun 23, 2015, 23:16:48 by jpmobius »
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

1973 RD350 Yamaha build  http://www.dotheton.com/forum/index.php?topic=66498.0

Offline jpmobius

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Re: The Stock Bike
« Reply #39 on: Jun 23, 2015, 22:58:24 »
Drilling a couple of fluid transfer holes is all it takes.  Race Tech details the mod in their instructions when you buy their parts.  Part on the left is modified, right is stock.
 
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

1973 RD350 Yamaha build  http://www.dotheton.com/forum/index.php?topic=66498.0