Author Topic: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)  (Read 142947 times)

0 Members and 3 Guests are viewing this topic.

Offline andy750

  • Really Old Timer ...
  • *******
  • Posts: 7,948
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #200 on: March 29, 2010, 07:54:54 AM »

  I wonder what you'd use to break the bead on the side of the road?...


Well we have done it...but there were 3 other guys helping...I dont recall what we used to break the bead or to reseal it...all I know is we needed 4 guys all working on it....so it has be slightly worried about doing it solo on the side of the road.

Spot the bike with no rear wheel ;)...I-59 in MI



cheers
Andy
Current bikes
1. CB750K4: Long distance bike, 17 countries and counting...2001 - Trans-USA-Mexico, 2003 - European Tour, 2004 - SOHC Easy Rider Trip , 2008 - Adirondack Tour 2-up , 2013 - Tail of the Dragon Tour , 2017: 836 kit install and bottom end rebuild. And rebirth: http://forums.sohc4.net/index.php/topic,173213.msg2029836.html#msg2029836
2. CB750/810cc K2  - road racer with JMR worked head 71 hp
3. Yamaha Tenere T700 2022

Where did you go on your bike today? - http://forums.sohc4.net/index.php?topic=45183.2350

Offline wannabridin

  • Patience made me a
  • Master
  • *****
  • Posts: 2,237
  • -Garrett
    • 1976 CB750K, under construction:
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #201 on: March 29, 2010, 07:55:57 AM »
It's funny you say that, I was gonna do one but my camera needed to be charged.
I usually use 3 adjustable wrench handles a taco'd 21 inch rim, and my feet, knees, and hands.




well that's yer problem right there...
1976 CB750K, currently under construction:
http://forums.sohc4.net/index.php?topic=64468.0

-And if you don't do it this year, you'll be one year older when you do...

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,050
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #202 on: March 29, 2010, 08:05:24 AM »
I get the bead broken with ... tire irons.... myself..

 I have probably fixed a lot more than a  dozen flats, on the roadside, I always pack a tire pump..

 Beads on 16in  can get tough, as are tires that have sat for many years..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Zaipai

  • I am getting closer to being an
  • Old Timer
  • ******
  • Posts: 3,400
    • My Home page
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #203 on: March 29, 2010, 01:07:32 PM »
I would like to see how that tire removal is done. Its been for ever since I had to do one and I am probably due...

.: Scott :.
Its my Avatar..

75 CB550F  | 


Offline Industrial Cafe

  • Like a well oiled
  • Really Old Timer ...
  • *******
  • Posts: 6,372
  • [Brian] I've got something to say about that!
    • Undead Asphalt
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #204 on: March 29, 2010, 02:28:57 PM »
I could throw one together on an old tire.
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

Offline Industrial Cafe

  • Like a well oiled
  • Really Old Timer ...
  • *******
  • Posts: 6,372
  • [Brian] I've got something to say about that!
    • Undead Asphalt
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #205 on: March 30, 2010, 08:55:20 AM »
CHANGING THE BEARINGS IN THE HARLEY WHEEL

It was easier than I thought it would be.
    First I made a 1" taper out of a piece of 26mm steel round stock


Then I hammered it into the bearing so it was stuck real good.


after that, I used a 1 inch piece of round stock to knock the bearing out through the other side.


    *IMPORTANT*
you have to do this task with the wheel standing up, so the 1 inch rod won't just knock your taper back back out of the bearing.
 I think it's called percussion force.  ???
   The hammer hits the rod and the rod hits the taper at just the right time to knock the bearing out of the hub. A few good whacks and out she pops!
 
It's pretty neat.



Then you put the bearing on top of the vise and tap the taper out with a smaller punch
      

  I used a 36mm socket (used on most foreign cars for their CV joints) to tap the new bearings and dust seals in. (one at a time)


And you're done!


next thing is to figure out the length of the wheel spacer for the right side of the axle.
« Last Edit: March 30, 2010, 08:58:26 AM by Industrial Cafe »
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

Offline 754

  • Really Old Timer ...
  • *******
  • Posts: 29,050
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #206 on: March 30, 2010, 09:13:43 AM »
Cant you just use a 3/4 inch bar cocked in the bore, and hit against the inner bearing race, then alternate side to side...?
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Industrial Cafe

  • Like a well oiled
  • Really Old Timer ...
  • *******
  • Posts: 6,372
  • [Brian] I've got something to say about that!
    • Undead Asphalt
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #207 on: March 30, 2010, 09:26:20 AM »
Not with the 1'' bearing, the O.D. of the "crush sleeve" is 1.25 inches and the inside of the hub is 1.30''
   So it only moves enough for you to do nothing in there.
« Last Edit: March 30, 2010, 09:45:23 AM by Industrial Cafe »
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

Offline Industrial Cafe

  • Like a well oiled
  • Really Old Timer ...
  • *******
  • Posts: 6,372
  • [Brian] I've got something to say about that!
    • Undead Asphalt
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #208 on: March 30, 2010, 07:17:11 PM »
MAKING THE 0.580 INCH WHEEL SPACER
   I had an axle for a 03-04 GSXR1000 layin' around, so I used the sleeve nut thing (on the left)
to make a spacer.


First thing to do was put a bolt in the rotors to hold them onto the hub and center the wheel up.
I used a 1/4 inch (6mm) allen wrench to make sure each rotor was lined up with the fender mounts.


the GSXR bearing assembly (installed in the harley wheel) is slightly narrower because the bearing seats are deeper.
that gave me a small gap on the other bolt side.


which I later made up for by drilling out a fat washer with a 15/16 drill bit and filing the edges smooth.


then I marked the axle by adding some paint to the edge of a business card and sticking it in there.


using the depth stick on a caliper I measured from the bearing face to the mark I made.


transferred this measurement (.580'') to the sleeve nut thingy and drew a circle around it with a pencil.


I like to cut it a bit longer than the pencil line so I can file it to size.
that way I can make sure it's .580'' all around.


finished product- filed to fit perfect in there (took an hour or so)
I filed it in the vise until it was flat then I laid the file on the table and pulled the spacer toward me until it was the right size. spinning it around and drawing on the edge with a marker to see what I was taking off.


 It fit in there perfectly and the discs didn't need any spacers in this case. but depending on the rim you use you might.




not bad, I didn't have too much 'scooting of the axle' to do.
« Last Edit: March 30, 2010, 07:19:24 PM by Industrial Cafe »
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

Offline Industrial Cafe

  • Like a well oiled
  • Really Old Timer ...
  • *******
  • Posts: 6,372
  • [Brian] I've got something to say about that!
    • Undead Asphalt
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #209 on: March 30, 2010, 07:24:19 PM »
Gratuitous mock up picture



I still need to drill the rotors with the Harley bolt pattern and get a master cylinder...
among other things.

also I noticed, there's a reasonable gap between the crossover line and the tire. that saves me a buck! ;D
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

Offline Zaipai

  • I am getting closer to being an
  • Old Timer
  • ******
  • Posts: 3,400
    • My Home page
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #210 on: March 30, 2010, 07:28:22 PM »
Dude, that is looking fantastic!!! You are the Bob Villa of the SOHC4 World...

.: Scott :.
Its my Avatar..

75 CB550F  | 


Offline Industrial Cafe

  • Like a well oiled
  • Really Old Timer ...
  • *******
  • Posts: 6,372
  • [Brian] I've got something to say about that!
    • Undead Asphalt
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #211 on: March 30, 2010, 07:37:41 PM »
I like Bob Vila, but I'll never live up to his legendary beard.  :D :D
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

Offline Staggerlee

  • Enthusiast
  • **
  • Posts: 222
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #212 on: March 30, 2010, 07:38:24 PM »
Nice dude!

How wide are the rotors on center all mounted up?

Offline Industrial Cafe

  • Like a well oiled
  • Really Old Timer ...
  • *******
  • Posts: 6,372
  • [Brian] I've got something to say about that!
    • Undead Asphalt
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #213 on: March 30, 2010, 07:43:20 PM »
measuring from the inside faces of the rotors I got 4.980 inch

so basically 5 inches.
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

Offline Retro Rocket

  • Eggs are hard due too a
  • Really Old Timer ...
  • *******
  • Posts: 19,235
  • ROCK & ROLL
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #214 on: March 30, 2010, 09:24:56 PM »
Looking good Brian.... ;)

Mick
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline BlindJoe

  • Expert
  • ****
  • Posts: 1,184
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #215 on: March 30, 2010, 10:40:47 PM »
awesome

Offline Spikeybike

  • when planting C4 at your enemy's base make sure you don't use a
  • Really Old Timer ...
  • *******
  • Posts: 7,265
  • member #1150
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #216 on: March 31, 2010, 03:31:37 PM »
i had a part-time job opening up a new Sears , and Bob Villa came there to demo some tools .... i got to meet him .....and............wait for it..   he was such a dick  :o :o   

    "i said i wanted Evian not this Ice mountain crap ...    ok, well get it
      :o :o :o :o... i really expected him to be more grounded in the real world
     ......broke my heart



oh yeah , and the wheel looks badass too  ;D ;D

Offline Industrial Cafe

  • Like a well oiled
  • Really Old Timer ...
  • *******
  • Posts: 6,372
  • [Brian] I've got something to say about that!
    • Undead Asphalt
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #217 on: March 31, 2010, 04:55:37 PM »
no waaaay!? :D

I drilled the harley pattern on the gsxr rotors, I'll post a ''how I did'' it in a bit.
« Last Edit: March 31, 2010, 04:59:11 PM by Industrial Cafe »
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

Offline Zaipai

  • I am getting closer to being an
  • Old Timer
  • ******
  • Posts: 3,400
    • My Home page
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #218 on: March 31, 2010, 05:04:18 PM »
Can't wait to see it Bob...

.: Scott :.
Its my Avatar..

75 CB550F  | 


Offline Industrial Cafe

  • Like a well oiled
  • Really Old Timer ...
  • *******
  • Posts: 6,372
  • [Brian] I've got something to say about that!
    • Undead Asphalt
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #219 on: March 31, 2010, 05:44:22 PM »
DRILLING THE NEW ROTOR PATTERN

First thing was to trace the center hole and the bolt holes from the old Harley rotor with a pencil.


Then sit the GSXR/Hayabusa Rotor on the paper, center it up with the ID end of the caliper and draw another circle.


if you did it wrong it looks like this. ;D


I corrected and cut it using the bottom of a  spray paint can.


Luckily the center hole on the Busa rotor just fits over a spray paint cap.
      While you're there, find the centers of the bolt holes and center-punch them.


 To drill it without walking the bit, I use bits from 3/16 to a little bigger than 5/16.
      If you have a drill press handy this won't be as important,


tadaah!
I like to use a fine round file and a countersink bit. but a de-burring tool will work too.

I clean the holes with these gimmicks.



Do it twice and the rotors are done.
    Now to get some hardware for 'em.


They have about 1mm of hop but once it's bolted up, I think it'll be fine. the bolt holes are slightly bigger than the bolts.



I don't know what to do for a speedometer, there's no room for a manual drive...
« Last Edit: May 03, 2010, 05:43:06 PM by Industrial Cafe »
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

Offline JS550

  • the artist formerly known as
  • Hot Shot
  • ***
  • Posts: 621
  • IAFF local 1307
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #220 on: March 31, 2010, 05:55:04 PM »
Looks fuggin great! Cant wait for a ride report.
Jim
If you're worried about how many calories are in beer, is losing weight really your biggest problem?

Offline Industrial Cafe

  • Like a well oiled
  • Really Old Timer ...
  • *******
  • Posts: 6,372
  • [Brian] I've got something to say about that!
    • Undead Asphalt
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #221 on: March 31, 2010, 06:00:02 PM »
Oh neither can I! I'll do a ride-along video.
     
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

Offline JS550

  • the artist formerly known as
  • Hot Shot
  • ***
  • Posts: 621
  • IAFF local 1307
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #222 on: March 31, 2010, 06:08:11 PM »
Oh neither can I! I'll do a ride-along video.
     
In FLIP FLOPS!
If you're worried about how many calories are in beer, is losing weight really your biggest problem?

Offline Industrial Cafe

  • Like a well oiled
  • Really Old Timer ...
  • *******
  • Posts: 6,372
  • [Brian] I've got something to say about that!
    • Undead Asphalt
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #223 on: March 31, 2010, 06:12:00 PM »
AGAIN!
everything I say is pure speculation and
I have no idea what I'm talking about  ._.


                                    Marla              .:71CB750:.CAFE

Offline MattFreeman

  • Hot Shot
  • ***
  • Posts: 331
  • What Have I Done?
Re: CB750 Dual disc front end swap (with GSXR1000/600/750 parts)
« Reply #224 on: March 31, 2010, 07:56:14 PM »
I don't know what to do for a speedometer, there's no room for a manual drive...

I remember being impressed with a members tach/speedo. If I'm correct he used a digital bicycle speedo and put the display inside the tach face. Maybe not what you wanna do given how sweet your gauge setup is, but I was struck by how clever it was.

I think others have used a bicycle computer as a speedo but I'm not really sure.

Great work BTW!!