« previous next »
Pages: [1]   Go Down

Author Topic: Who runs a 520 chain on a CB750?  (Read 11657 times)

0 Members and 1 Guest are viewing this topic.

Offline Kamal

  • Enthusiast
  • **
  • Posts: 104
  • "..but, how did it make you FEEL?"
    • MotoTherapy
Who runs a 520 chain on a CB750?
« on: April 30, 2007, 07:06:51 PM »
Sorry if this is a moot point.

Chains are so strong these days!  Does anyone run 520 chains on CB750 bikes?  Does anyone RACE with them? I think I have been trail riding on my dirt bikes too long....I've got 520 chain fever!

Thanks!

Kamal
« Last Edit: May 01, 2007, 11:28:02 AM by Kamal »
Logged
CB750K6
CB750K2 Drag Project
IT465 Yammie
KMX250 "Kawazuki" (or was it a "Suzusaki"?)

Offline merc2dogs

  • Hot Shot
  • ***
  • Posts: 625
Re: Who runs a 520 chain on a CB750?
« Reply #1 on: April 30, 2007, 08:12:14 PM »
I replaced my chain with 520 3 years ago, no problems plenty strong for the cb.

 Don't race, but tend to get carried away

Ken.
Logged

Offline turboguzzi

  • Old Timer
  • ******
  • Posts: 4,120
Re: Who runs a 520 chain on a CB750?
« Reply #2 on: May 01, 2007, 03:02:48 AM »
running a 520 in my CB500 racer with ally rear sprockets / steel front sprocket

no problems so far but bike sees only track time

Would go with steel rear sprockets if aplying to a street bike.

You'll have to drill your own blank sprockets to suit your wheel and grind the front sprocket to suit the narrow 520,  that's what I had to do in mine. And pay attention to offsets so chain runs straight

With all the work needed and shorter chain life, got to wonder about the worth of 3-4 lbs weight savings on a street bike.

my two cents
TG
Logged

Offline MRieck

  • Really Old Timer ...
  • *******
  • Posts: 10,790
  • Big ideas....
Re: Who runs a 520 chain on a CB750?
« Reply #3 on: May 01, 2007, 06:03:12 AM »
 The 520 will work out very well. These people can make any size sprocket you want  www.sprocketspecialists.com
Logged
Owner of the "Million Dollar CB"

Offline Kamal

  • Enthusiast
  • **
  • Posts: 104
  • "..but, how did it make you FEEL?"
    • MotoTherapy
Re: Who runs a 520 chain on a CB750?
« Reply #4 on: May 01, 2007, 09:29:13 AM »
I think I discovered, while restoring my 82 Yamaha IT465, that the front sprocket for this bike (same as a KDX200 as well) fits right onto the CB750 output shaft (though doesn't have any tapped holes for the retainer.

Ill double check on that today.  I'm willing to bet there are other dirtbike rear sprockets that would be a match...I'll do some research!

Kamal
Logged
CB750K6
CB750K2 Drag Project
IT465 Yammie
KMX250 "Kawazuki" (or was it a "Suzusaki"?)

Offline tinyrobot

  • Hot Shot
  • ***
  • Posts: 276
  • Mock it up before you Fock it up!
    • ChiVinMoto
Re: Who runs a 520 chain on a CB750?
« Reply #5 on: March 04, 2008, 01:42:01 PM »
Bump for anyones updates.

I'm looking to convert the 630 to 520 on my 78k cb750.  Anything to watch out for or is it just swap out for new sprockets?  I read that I might need a spacer in a 630-530 conversion, so I assume the same might apply hear.
Logged

Offline BlindJoe

  • Expert
  • ****
  • Posts: 1,184
Re: Who runs a 520 chain on a CB750?
« Reply #6 on: June 06, 2010, 07:43:42 AM »
bump.

has anyone tried the kit from cycle-x? http://www.cyclexchange.net/Chain%20Sprocket%20Page.htm
Logged

Offline HawaiiMike

  • Enthusiast
  • **
  • Posts: 238
    • Hawaii realtor
Re: Who runs a 520 chain on a CB750?
« Reply #7 on: June 06, 2010, 04:30:38 PM »
I wonder if the Cyclexchange set will work on a CB550 too?  Looks like it will fit.  Maybe need a smaller sprocket for the back wheel.
Logged

Offline Gonzowerke

  • I burn asses like a Bhut Jolokia, 'cause I'm a real
  • Hot Shot
  • ***
  • Posts: 359
  • Member #106, Owner of the ORIGINAL Frankenbike!
Re: Who runs a 520 chain on a CB750?
« Reply #8 on: June 06, 2010, 04:52:05 PM »
Kamal and Tinyrobot,

I run a 530, not 520 on both my 750's. It is a straight swap, just your new chain will have a few extra links in it, compared to a 630. The links are smaller in length and width, so you need more to span the distance between sprockets. I don't have either one here now to look at, but memory says 17/48 on the sprockets.
Logged
1977 F2 "Highway Star"
1977 F2 "Bike-In-A-Box"
1978 K8 "Frankenbike"
1991 CRX Si "Buzz Bomb"
2000 Jeep Wrangler "UBoat"
2011 BMW S1000RR "TIE Fighter"

Offline B.O.X.N.I.F.E.

  • The Stumped
  • Expert
  • ****
  • Posts: 1,137
Re: Who runs a 520 chain on a CB750?
« Reply #9 on: June 06, 2010, 06:09:47 PM »
Quote from: MRieck on May 01, 2007, 06:03:12 AM
The 520 will work out very well. These people can make any size sprocket you want  www.sprocketspecialists.com

No luck here. I've seen them recommended several times and traded emails with Dee Dee in their sales department. She recommended a steel front and aluminum rear, with an o-ring chain for my 550. I let her know about the 550's o-ring incompatibility and that their catalogs 12-16 tooth front sprocket listings wouldn't support the stock gearing for the 550, which is 17 teeth up front, and inquired about having a 17 tooth front made or added to the catalog. At that point she started ignoring my emails. I tried two more times with no response. I was eager to buy them too...  ???
Logged
1974 CB550

32 days and 5,536 miles on a CB550...

http://kerncountykid.blogspot.com/

and a couple years later, 38 days and 9,102 miles...

Forever West

... and all of it in a 4 mintue video

<a href="Not a valid vimeo URL">WWYY?[/url]

Offline jaguar

  • Old Timer
  • ******
  • Posts: 2,780
Re: Who runs a 520 chain on a CB750?
« Reply #10 on: June 08, 2010, 06:08:47 PM »
sooo will a 520 hold up to the HP of a 750?
Logged

Offline I Zombie

  • Enthusiast
  • **
  • Posts: 245
Re: Who runs a 520 chain on a CB750?
« Reply #11 on: June 08, 2010, 07:59:36 PM »
Quote from: BlindJoe on June 06, 2010, 07:43:42 AM
bump.

has anyone tried the kit from cycle-x? http://www.cyclexchange.net/Chain%20Sprocket%20Page.htm

I got one of there set ups, yet to install it but it looks damn good
Logged
78 CB750K

Offline Ricky_Racer

  • Master
  • *****
  • Posts: 1,598
Re: Who runs a 520 chain on a CB750?
« Reply #12 on: June 08, 2010, 09:27:28 PM »
Quote from: jaguar on June 08, 2010, 06:08:47 PM
sooo will a 520 hold up to the HP of a 750?

Dude! RC51's run 520 chain conversions. No problemo with our dinosaurs!  RR

Logged
I was put on Earth to accomplish a certain number of things. Now I'm so far behind, I'll never die!

Offline jaguar

  • Old Timer
  • ******
  • Posts: 2,780
Re: Who runs a 520 chain on a CB750?
« Reply #13 on: June 09, 2010, 05:47:21 AM »
i did not know that....thanks
sounds good
alloy rear sproket and 520 chain here i come.

no to figure gearing.

is there a chart that shows gearing?  but takes into account HP?
so at a given hp you can tell how gears will work?
Logged

Offline BrianAdair

  • Hot Shot
  • ***
  • Posts: 288
  • Oh, so this is where you type the text...
Re: Who runs a 520 chain on a CB750?
« Reply #14 on: January 06, 2011, 08:27:58 PM »
Dragging this thread back up.... ;D

I was thinking of going with a 530 set up, the local guy I get most of my NOS parts is trying to talk me into staying with the 630 set up.
His reason, he says the 530 will end up busting the engine case, and to small for what I have done to the engine....?
Didn't the 76 back 750's come with a 530 setup?
Mine is a K7 model, I have bored it over, larger cam, springs, 4 2 1 headed, ported head. I just don't see the need in the big bulky 630 chain?
What are the advantages disadvantages to this?
Logged

Offline Gordon

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 12,114
  • 750K1, 550K2
Re: Who runs a 520 chain on a CB750?
« Reply #15 on: January 06, 2011, 10:43:57 PM »
Quote from: Brian77cb750 on January 06, 2011, 08:27:58 PM
Dragging this thread back up.... ;D

I was thinking of going with a 530 set up, the local guy I get most of my NOS parts is trying to talk me into staying with the 630 set up.
His reason, he says the 530 will end up busting the engine case, and to small for what I have done to the engine....?
Didn't the 76 back 750's come with a 530 setup?
Mine is a K7 model, I have bored it over, larger cam, springs, 4 2 1 headed, ported head. I just don't see the need in the big bulky 630 chain?
What are the advantages disadvantages to this?

I think your local guy is stuck in the 70's.  Any decent, modern 530 chain is plenty strong enough. 
Logged

Offline Retro Rocket

  • Eggs are hard due too a
  • Really Old Timer ...
  • *******
  • Posts: 19,214
  • ROCK & ROLL
Re: Who runs a 520 chain on a CB750?
« Reply #16 on: January 07, 2011, 01:09:58 AM »
Quote from: Gordon on January 06, 2011, 10:43:57 PM
Quote from: Brian77cb750 on January 06, 2011, 08:27:58 PM
Dragging this thread back up.... ;D

I was thinking of going with a 530 set up, the local guy I get most of my NOS parts is trying to talk me into staying with the 630 set up.
His reason, he says the 530 will end up busting the engine case, and to small for what I have done to the engine....?
Didn't the 76 back 750's come with a 530 setup?
Mine is a K7 model, I have bored it over, larger cam, springs, 4 2 1 headed, ported head. I just don't see the need in the big bulky 630 chain?
What are the advantages disadvantages to this?

I think your local guy is stuck in the 70's.  Any decent, modern 530 chain is plenty strong enough. 

+ 100000

New chains don't even resemble 70's chewing gum chains..... ;)   630's rob horsepower and are a big chain, not needed any more. Modern race bikes use 520 and 530 chains....Far more power than our little beasts.....

Mick

Logged
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 Spanner 1

  • Old Timer
  • ******
  • Posts: 4,092
  • CB 750 K0 ( always thought it was a K1!) + CB750K8
Re: Who runs a 520 chain on a CB750?
« Reply #17 on: January 07, 2011, 05:38:53 PM »
So, a 530 will work to replace a 630 (750-K8 ) chain without any mods. except the 530 will have more links ??
Logged
If your sure it's a carb problem; it's ignition,
If your sure it's an ignition problem; it's carbs....

Offline Retro Rocket

  • Eggs are hard due too a
  • Really Old Timer ...
  • *******
  • Posts: 19,214
  • ROCK & ROLL
Re: Who runs a 520 chain on a CB750?
« Reply #18 on: January 07, 2011, 05:48:30 PM »
Quote from: Spanner 1 on January 07, 2011, 05:38:53 PM
So, a 530 will work to replace a 630 (750-K8 ) chain without any mods. except the 530 will have more links ??

Need sprockets as well....

Mick
Logged
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 BrianAdair

  • Hot Shot
  • ***
  • Posts: 288
  • Oh, so this is where you type the text...
Re: Who runs a 520 chain on a CB750?
« Reply #19 on: January 07, 2011, 06:08:47 PM »
I'm having trouble finding a source for sprockets.. ???
Wheres a good place to get 530 sprockets that will work on my K7, I'm not wanting to stay with the stock gearing 15 41, thinking of going with a 14 46 for more low end.



this is a neat site  http://gearingcommander.com/
Logged

Offline Spanner 1

  • Old Timer
  • ******
  • Posts: 4,092
  • CB 750 K0 ( always thought it was a K1!) + CB750K8
Re: Who runs a 520 chain on a CB750?
« Reply #20 on: January 07, 2011, 06:13:44 PM »
Sorry the Poms are kickin' yer arses in the Cricket, Retro  ;D
Logged
If your sure it's a carb problem; it's ignition,
If your sure it's an ignition problem; it's carbs....

Offline Retro Rocket

  • Eggs are hard due too a
  • Really Old Timer ...
  • *******
  • Posts: 19,214
  • ROCK & ROLL
Re: Who runs a 520 chain on a CB750?
« Reply #21 on: January 08, 2011, 07:38:56 PM »
Quote from: Spanner 1 on January 07, 2011, 06:13:44 PM
Sorry the Poms are kickin' yer arses in the Cricket, Retro  ;D

Had to happen sooner or later, no one can be NO1 for ever..... ;)

Mick
Logged
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 754

  • Really Old Timer ...
  • *******
  • Posts: 29,046
Re: Who runs a 520 chain on a CB750?
« Reply #22 on: January 08, 2011, 08:21:01 PM »
 Brian, I would not run less than 17 T for High hour usage.
 18/48 is stock...17/48 will get off the line better..
Logged
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 BrianAdair

  • Hot Shot
  • ***
  • Posts: 288
  • Oh, so this is where you type the text...
Re: Who runs a 520 chain on a CB750?
« Reply #23 on: January 08, 2011, 08:58:03 PM »
Sent you a PM, Frank.
Logged
Pages: [1]   Go Up
« previous next »