Speedometer drive modification for duel discs.

Previous Topic Next Topic
 
classic Classic list List threaded Threaded
3 messages Options
Reply | Threaded
Open this post in threaded view
|

Speedometer drive modification for duel discs.

TOOLS1
Administrator
The stock 750 speedometer drive is too big to allow the disc to mount up. Now you could go on the hunt for a CB 500-550 drive, but they are getting hard to find. So I came up with this solution.
This shiny cover will not be needed any more.


First remove the axle, rotor, and speedometer drive




This is the piece y0u need to modify.


I start by finding a socket that fits into the hole, and then clamp the socket down, so that I can spin the drive around on the socket.




I then set up my Dremel with a cutting wheel, and put a screw into the work bench to rest the Dremel against, so that it does not move while cutting. The black dirt mark is a perfect place to make the cut.


I then spin it round, and round while the Dremel gradually cuts. It took about 7 discs to cut all the way through. Also be sure to wear gloves. This thing gets hot!




Then drill an 1/8 inch hole in it. This is what it will look like.


Now clean up the back side of the drive, and the mounting surface of the wheel. Then mix up some JB Weld.




Now JB Weld the drive to the wheel using the axle to hold the piece in position.




To be continued.......
TOOLS


Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
Reply | Threaded
Open this post in threaded view
|

Re: Speedometer drive modification for duel discs.

TOOLS1
Administrator
Now that my JB Weld has set, i'm back at it.
I removed the axle, and speedometer drive to expose the drive gear. I then got an 1/8" X 1/2" roll pin, and an 1/8 inch drill bit. I marked the drill bit with some tape. I want to go deep enough that the roll pin will go all the way in, but not drill through the hub.


I then drilled the hole in the hub, and inserted the roll pin. It should be just proud of the drive gear.




Now bolt the rotors on, being sure to put the bolts through from the right side.
Install the axle, and drive.




Install the wheel, and your all most done.


TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
Reply | Threaded
Open this post in threaded view
|

Re: Speedometer drive modification for duel discs.

TheLastJoker
In reply to this post by TOOLS1
This looks like a much easier and cheaper way to put spoked wheels on my super sport while keeping dual disks than switching to a GL1000 front end.  Thanks for the write up!
1978 CB750F Super Sport