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Author Topic: CB 550 in a Cb 125 Chassis  (Read 4955 times)

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Offline Newatthis

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CB 550 in a Cb 125 Chassis
« on: February 25, 2011, 09:51:35 PM »
 Hi iam new to this whole forum thing and to really customizing motorcycles but am an avid 4x4 customizer hehe. Alright my goal is to put a cb 550 engine into a cb 125 chassis. Has any one ever attempted a build similar to this? If so please post pictures. Oh and are these engines good and quick?
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Offline Stev-o

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Re: CB 550 in a Cb 125 Chassis
« Reply #1 on: February 25, 2011, 10:28:22 PM »
Why would you want to do that?
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Offline kck3

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Re: CB 550 in a Cb 125 Chassis
« Reply #2 on: February 26, 2011, 12:00:53 AM »
How bout a 550 engine in a 550 frame? 
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Offline crazypj

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Re: CB 550 in a Cb 125 Chassis
« Reply #3 on: February 26, 2011, 12:05:59 AM »
Not a good idea.
 Is your insurance paid up or do you intend to kill someone else?  :D
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Offline Leino

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Re: CB 550 in a Cb 125 Chassis
« Reply #4 on: February 26, 2011, 12:06:57 AM »
Quote from: Newatthis on February 25, 2011, 09:51:35 PM
Hi iam new to this whole forum thing and to really customizing motorcycles but am an avid 4x4 customizer hehe. Alright my goal is to put a cb 550 engine into a cb 125 chassis. Has any one ever attempted a build similar to this? If so please post pictures. Oh and are these engines good and quick?
I have two CB 125's and a CB 750 amongst other bikes in my garage...
Honestly to me your idea sounds potentially hazardous.
Depends on the model etc. but CB 250 engine is almost a direct bolt-on torque adder for the little Honda.
I know it ain't what you after, you really want something different and bloody dangerous and I see your point, just don't like to see people get killed riding their contraptions  ;D

 Juha
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Offline bryanj

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Re: CB 550 in a Cb 125 Chassis
« Reply #5 on: February 26, 2011, 02:43:52 AM »
Frame too small and inadequately strong; brakes totaly inadequate; etc; etc

OR
In words of smaller sylables

YOU MUST BE NUTS
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Offline Newatthis

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Re: CB 550 in a Cb 125 Chassis
« Reply #6 on: February 26, 2011, 09:46:46 AM »
Ok so my game plan has changed im goin to get an older kawasaki motorcycle to  use as the frame i would have liked to use a cb 550 frame but the kawasaki for the whole bike is only $50
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Offline Flying J

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Re: CB 550 in a Cb 125 Chassis
« Reply #7 on: February 26, 2011, 10:32:21 AM »
Then i would sell the frame and buy a 550 frame or sell the motor and by a kawi motor
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Offline Flying J

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Re: CB 550 in a Cb 125 Chassis
« Reply #8 on: February 26, 2011, 10:35:11 AM »
Quote from: Leino on February 26, 2011, 12:06:57 AM
I have two CB 125's and a CB 750 amongst other bikes in my garage...
Honestly to me your idea sounds potentially hazardous.
Depends on the model etc. but CB 250 engine is almost a direct bolt-on torque adder for the little Honda.
I know it ain't what you after, you really want something different and bloody dangerous and I see your point, just don't like to see people get killed riding their contraptions  ;D

 Juha


 Are you talking about putting a Cb250 twin in a 125s or the older twin 125? I have a 125s and wouldnt mind dropping in a 250 if it would actually fit
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Offline Leino

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Re: CB 550 in a Cb 125 Chassis
« Reply #9 on: February 26, 2011, 10:44:51 AM »
Quote from: ffjmoore on February 26, 2011, 10:35:11 AM
Are you talking about putting a Cb250 twin in a 125s or the older twin 125? I have a 125s and wouldnt mind dropping in a 250 if it would actually fit
I'm talking about the CB 125 twin.
My brother had a 1983 CB 125 TD and I put a 250 Nighthawk engine in it.


 
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Offline TwoTired

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Re: CB 550 in a Cb 125 Chassis
« Reply #10 on: February 26, 2011, 11:36:26 AM »
Quote from: bryanj on February 26, 2011, 02:43:52 AM
Frame too small and inadequately strong; brakes totaly inadequate; etc; etc

OR
In words of smaller sylables

YOU MUST BE NUTS

I think he is just trying to assemble free/cheap parts into a Frankenstein bastard.

I think he would be better off putting the engine in a bar stool. 

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Offline Newatthis

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Re: CB 550 in a Cb 125 Chassis
« Reply #11 on: February 26, 2011, 11:57:58 AM »
Haha Nice bar stool is that yours? Yea Im trying to make a bike that is cheap yet still decent running and looking ill get it looking nice this summer when im working again
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Offline crazypj

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Re: CB 550 in a Cb 125 Chassis
« Reply #12 on: February 27, 2011, 09:37:45 PM »
Until they were banned, back in the 70's, lot of people put CB125 forks on Honda drag bikes (so a friend who used to sponsor racers tells me)
 After a few snapped off, they were not allowed to be used, being too lightweight (so they went to 33mm CB350 forks  ;D)
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Offline mrbreeze

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Re: CB 550 in a Cb 125 Chassis
« Reply #13 on: February 27, 2011, 09:51:01 PM »
Quote from: Newatthis on February 26, 2011, 09:46:46 AM
Ok so my game plan has changed im goin to get an older kawasaki motorcycle to  use as the frame i would have liked to use a cb 550 frame but the kawasaki for the whole bike is only $50
Awwww.....I get it!!!!! Risk your life even after everyone here advises against it because the Kawi frame is only $50 !!!!! Your family can use that extra money you saved to kick in on your funeral!!!! ::) ::) ::)
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Offline Newatthis

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Re: CB 550 in a Cb 125 Chassis
« Reply #14 on: February 28, 2011, 04:37:12 PM »
OK so i picked up the kawi today complete bike:) perfect condition only $75. An  young kid but an old guy it  and his wife was making him get rid of it so yea its mine now he had it sitting in his garage for about 15 years. The thing had 11 quarts of oil in it lol. Im going to try and get it running tomorrow ill get some pictures up. What do you guys think is quicker a kz 400 or a 550 honda?
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Offline Flying J

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Re: CB 550 in a Cb 125 Chassis
« Reply #15 on: February 28, 2011, 08:48:27 PM »
The kz 400 in the KZ frame is by far the fatest. Fix it up, it will be a great bike for ya.
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Offline malcolmgb

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Re: CB 550 in a Cb 125 Chassis
« Reply #16 on: March 01, 2011, 07:05:58 AM »
The only way that would work is if you could find an old 125 race frame which should be able to handle the power, but will you be able to shoehorn a four in. There is a race series in the UK/Europe which uses 500cc singles and some use old 125 race frames.

http://www.supermononewsletter.co.uk/content/16-What-is-Supermono
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Offline Flying J

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Re: CB 550 in a Cb 125 Chassis
« Reply #17 on: March 01, 2011, 09:11:47 AM »
Im thinking this is beyond his budget.
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Offline Newatthis

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Re: CB 550 in a Cb 125 Chassis
« Reply #18 on: March 01, 2011, 04:16:26 PM »
ffjmoore i have a couple of those now
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Offline mlinder

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Re: CB 550 in a Cb 125 Chassis
« Reply #19 on: March 01, 2011, 04:18:16 PM »
There's an aprilia 125 with a built crf450 engine in it that run out here at PIR.

Absurdly fast.
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Offline FillionJ

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Re: CB 550 in a Cb 125 Chassis
« Reply #20 on: August 25, 2014, 08:05:55 AM »

Quote from: Leino on February 26, 2011, 12:06:57 AM
Quote from: Newatthis on February 25, 2011, 09:51:35 PM
Hi iam new to this whole forum thing and to really customizing motorcycles but am an avid 4x4 customizer hehe. Alright my goal is to put a cb 550 engine into a cb 125 chassis. Has any one ever attempted a build similar to this? If so please post pictures. Oh and are these engines good and quick?
I have two CB 125's and a CB 750 amongst other bikes in my garage...
Honestly to me your idea sounds potentially hazardous.
Depends on the model etc. but CB 250 engine is almost a direct bolt-on torque adder for the little Honda.
I know it ain't what you after, you really want something different and bloody dangerous and I see your point, just don't like to see people get killed riding their contraptions  ;D

 Juha

Leino do u happen to have a cb 125 parts bike ? I'm in need of the bottom right hand control housing. My brake cable holder snapped off, lemme know if u can help me


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Offline ekpent

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Re: CB 550 in a Cb 125 Chassis
« Reply #21 on: August 25, 2014, 08:33:27 AM »
That person was last 'active' on June 18th of 2011. May be long gone, maybe try a PM. http://forums.sohc4.net/index.php?action=profile;u=22152
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