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halo123. |
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halo123. Renault 5 Driver
Joined: 23 Jul 2007 Karma :
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Posted: 09:38 - 03 Oct 2007 Post subject: it250 will it fit in a 125 honda cg/clone frame |
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https://www.bikepics.com/pictures/554105/
Will the engine in that bike fit in a honda cg 125 clone.
this bike https://www.huntermotorcycles.co.za/NewCarDisplay.aspx?Variant=5421
As i have the cg but have managed to bend the crank shaft with out breaking any covers so i think the engine quality is crap so i would maybe replace the engine with one of these if it fits.
(Nb i bent the crank by over revving and letting clutch out to fast , so now it eats stators( what i know as a magneto)(nb south africa)
Thanks
Angus ____________________ Halo123. =Techie/geek and bike rider ,
current bikes owned ,fix me upper gs 500e missing cdi
cbr 250 virgin colours |
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G |
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G The Voice of Reason
Joined: 02 Feb 2002 Karma :
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Posted: 11:01 - 03 Oct 2007 Post subject: Re: it250 will it fit in a 125 honda cg/clone frame |
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It might fit, but with a hell of a lot of bodging, probably better to get an it250 frame to put it in . |
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Kickstart |
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Kickstart The Oracle
Joined: 04 Feb 2002 Karma :
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halo123. |
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halo123. Renault 5 Driver
Joined: 23 Jul 2007 Karma :
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Posted: 11:35 - 03 Oct 2007 Post subject: |
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hi thanks.
i saw a reasonal priced motor thats why i thought of it, then i realised , that the it 250 is a two stroke and i really dont do two strokes, they scare me
he he
well i gave the 125 to my mom because she told me she wanted it so she can put another motor in it and learn to ride a Motorbike on.
But maybe i must just look for a reasonable priced bike with repairable motor ,and just fix that.
Hunter lifan in sa =junk (brand new)
Hehe ____________________ Halo123. =Techie/geek and bike rider ,
current bikes owned ,fix me upper gs 500e missing cdi
cbr 250 virgin colours |
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Spoon261 |
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Spoon261 Trackday Trickster
Joined: 21 Feb 2007 Karma :
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G |
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G The Voice of Reason
Joined: 02 Feb 2002 Karma :
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Spoon261 |
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Spoon261 Trackday Trickster
Joined: 21 Feb 2007 Karma :
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Posted: 11:11 - 04 Oct 2007 Post subject: |
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Quote: | Do you have links to details about honda converting the CB engine for use in the CG? |
https://en.wikipedia.org/wiki/Honda_CG125
Its also common knowledge about the Honda CB125 engine is the Honda CG125 engine but just the valves have changed as already mentioned, but remember the CB125 was before the internet, ask any old mechanic who has worked on them both.
Quote: | Also, what 'sports bike manufacturuer' uses a sleeved down 250 engine in their 125. Only bike I can think of that even comes close is the comet, and that's only just a commuter, never mind sports. |
The bike was not a common brand like a Japanese one, I have tried to remember the manufacture and failed, the review was from a magazine.
The bike was reviewed this year and was a twin cylinder 250cc engine and a real sports bike frame and fairing with a very high price.
The review was for the 125cc version and it said it was the same exact bike but the engine sleeved down to 125cc.
I don’t believe the 250cc engine version is imported in to the UK, but the 125cc was or is going to be? ____________________ Honda CG125 Website https://hondacg125.awardspace.com/
Honda CBF125, CBR125 & Yamaha YBR125 Website https://125ccbikeclub.awardspace.co.uk/
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veeeffarr |
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veeeffarr Super Spammer
Joined: 22 Jul 2004 Karma :
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halo123. |
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halo123. Renault 5 Driver
Joined: 23 Jul 2007 Karma :
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Kickstart |
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Kickstart The Oracle
Joined: 04 Feb 2002 Karma :
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Posted: 11:57 - 04 Oct 2007 Post subject: |
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Spoon261 wrote: | Its also common knowledge about the Honda CB125 engine is the Honda CG125 engine but just the valves have changed as already mentioned, but remember the CB125 was before the internet, ask any old mechanic who has worked on them both. |
While the CG and CB (single) engines are closely related, it is a lot more of a difference that just a different head for the cam and valves. There was a large family of OHC Honda engines (CB100N, XL185 are 2 other examples of closely related engines). The CG engine is quite cleverly designed for cheap production (ie, using the same cam for both the inlet and exhaust valves).
The 125 OHC engines were quite renowned for seizing the cams into the heads, or just destroying the cam "bearings" in the head (there was no bearing, that was part of the problem).
The 125 twin engine is different again, although I supect the mounting points to the frame are the same, or at last very close.
Spoon261 wrote: | The bike was reviewed this year and was a twin cylinder 250cc engine and a real sports bike frame and fairing with a very high price. |
Sounds like the Hyosong that G mentioned.
All the best
Keith ____________________ Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing |
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halo123. |
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halo123. Renault 5 Driver
Joined: 23 Jul 2007 Karma :
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Posted: 12:05 - 04 Oct 2007 Post subject: |
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oops i missed G with the comet first.
but thats most likely check the specs , they are almost identical exept the cc
edit
hyosung uk https://www.hyosung.co.uk/range.php
could also be gt125r /gt250r
(he he people gonna think i am spamming them site now with links)
but i am just bored at work. ____________________ Halo123. =Techie/geek and bike rider ,
current bikes owned ,fix me upper gs 500e missing cdi
cbr 250 virgin colours |
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Spoon261 |
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Spoon261 Trackday Trickster
Joined: 21 Feb 2007 Karma :
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Posted: 12:19 - 04 Oct 2007 Post subject: |
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Spoon261 |
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Spoon261 Trackday Trickster
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G The Voice of Reason
Joined: 02 Feb 2002 Karma :
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halo123. |
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halo123. Renault 5 Driver
Joined: 23 Jul 2007 Karma :
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Posted: 14:15 - 04 Oct 2007 Post subject: |
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yeah i realise that but was the most likely ( or so i thought then i saw the gtr s that hyosung have and realised that those were more likely to fall in the sport bike category) but that said bikez .com list the gs 500 as a sports bike oddly enough
and wht category would you say it normall falls in ____________________ Halo123. =Techie/geek and bike rider ,
current bikes owned ,fix me upper gs 500e missing cdi
cbr 250 virgin colours |
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Kickstart |
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Kickstart The Oracle
Joined: 04 Feb 2002 Karma :
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halo123. |
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halo123. Renault 5 Driver
Joined: 23 Jul 2007 Karma :
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Posted: 09:14 - 05 Oct 2007 Post subject: |
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bad research ____________________ Halo123. =Techie/geek and bike rider ,
current bikes owned ,fix me upper gs 500e missing cdi
cbr 250 virgin colours |
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Spoon261 |
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Spoon261 Trackday Trickster
Joined: 21 Feb 2007 Karma :
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Posted: 10:32 - 05 Oct 2007 Post subject: |
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Does any of this sports bike or not, or which part of the engine is different in the CB125 vs the CG125, really make any difference?
Lets just put this in perspective.
I stated a 250cc engine has been sleeved down to make it 125cc.
Are we all agreed that we all no of an engine where that has been done.
The difference between the CB125 engine and the CG125 engine is in the valve system, that includes all the parts kickstart has mentioned.
You can all argue as much as you like what makes a sports bike.
Have a look at definitions on page 9 of the following file
https://www.mcia.co.uk/_Attachments/612_101CMS.pdf ____________________ Honda CG125 Website https://hondacg125.awardspace.com/
Honda CBF125, CBR125 & Yamaha YBR125 Website https://125ccbikeclub.awardspace.co.uk/
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Kickstart |
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Kickstart The Oracle
Joined: 04 Feb 2002 Karma :
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Posted: 11:55 - 05 Oct 2007 Post subject: |
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Spoon261 wrote: | Does any of this sports bike or not, or which part of the engine is different in the CB125 vs the CG125, really make any difference?
The difference between the CB125 engine and the CG125 engine is in the valve system, that includes all the parts kickstart has mentioned. |
Yes, when the similarity is a vague external likeness, with the same basic shape so that no great changes in tooling are required.
Suspect that the parts that are actually the same are outnumbered by those that are different. Different heads, barrels, crankcases, cranks, valves, etc. OK Piston might be the same (but that will likely change between different markets with different fuel requriements) and the gearbox might be the same (but probably shared with the 125 twins).
There is about as much similarity as there is between a Ducati 1098 engine and a 900SS engine.
Certainly not a case that with a bit of juggling you could lob the top end of a CB125 engine onto a CG125 bottom end.
Spoon261 wrote: | I stated a 250cc engine has been sleeved down to make it 125cc.
Are we all agreed that we all no of an engine where that has been done. |
Maybe, but hardly a common thing and when done it is to be cheap. Describing Hyosung as a sports bike maker is really stretching a point, although as in that case both the bore and stroke have changed it is not a simple sleeve down job.
All the best
Keith ____________________ Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing |
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Spoon261 |
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Spoon261 Trackday Trickster
Joined: 21 Feb 2007 Karma :
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Posted: 12:30 - 05 Oct 2007 Post subject: |
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kickstart
I was correct, Haynes Honda CG125 workshop manual say the same as me, read it for yourself, about the CB125 and the CG125.
End of argument, if you want to take it further argue with Haynes not me.
I never said or mentioned Hyosung ____________________ Honda CG125 Website https://hondacg125.awardspace.com/
Honda CBF125, CBR125 & Yamaha YBR125 Website https://125ccbikeclub.awardspace.co.uk/
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Kickstart |
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Kickstart The Oracle
Joined: 04 Feb 2002 Karma :
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Posted: 13:01 - 05 Oct 2007 Post subject: |
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Spoon261 wrote: | I was correct, Haynes Honda CG125 workshop manual say the same as me, read it for yourself, about the CB125 and the CG125. |
I have no Haynes on the CG125 but just look at the 2 engines and you will see. CB125 has no provision for a cam in the bottom end, a cam chain tunnel in the barrel, plus a totally different head. That is the 2 major components that are different as well as the head. It is obvious that, although superficially similar, they are different engines. Certainly not a case of a CB engine with a minor mod for the valve operation
Spoon261 wrote: | End of argument, if you want to take it further argue with Haynes not me. |
They are not known as a "Haynes book of lies" for nothing.
Spoon261 wrote: | I never said or mentioned Hyosung |
True, but you never argued and it is the only example anyone has come up with for a current 125 sports (ish) bike that might be a sleeved down 125.
All the best
Keith ____________________ Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing |
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bish777 |
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bish777 World Chat Champion
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Spoon261 |
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Spoon261 Trackday Trickster
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Spoon261 |
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Spoon261 Trackday Trickster
Joined: 21 Feb 2007 Karma :
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Posted: 04:04 - 06 Oct 2007 Post subject: |
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Kickstart
Where do you get your Honda CB125 information from?
Post a link to the technical details of the engine.
I have found some very basic information about there being several different changes over the years to the single cylinder Honda CB125.
one-piece cylinder head, two-piece cylinder head etc..
https://www.cyclechaos.com/wiki/Honda_CB125
I have also been reading about the Honda CG125 engine, it has also changed over the years.
If your argument is correct, you should also say the Honda CG125 has had several totally different engines and should have been renamed.
With all the many changes inside both the Honda CG125 and CB125, one thing has definitely staid the same.
Honda CG125 is overhead valve
Honda CB125 is overhead cam
And they both have the same bore and stroke
The only way to resolve this argument would be to get the technical specs for both the Honda CG125 and CB125 for the same year and made in the same country.
I have had to research the Honda CG125 and found there are several factory’s in different country’s. Problem is they are not all making the same Honda CG125.
At least I no for sure they were not around the year 2000, I have found several 4 speed gearbox’s as well as the normal 5 speed. There are engine differences as well.
One thing I do no, all of this argument is totally irrelevant to my website page, it was about increasing the engine size of the Honda CG125. If you read the webpage how to increase engine size, you will see someone has used the exact information from the Honda TL125 (overhead cam) website to increase his Honda CG125 engine size.
The Honda TL125 website claims the CB125 engine is pretty much the same as the TL125, he claims the parts are often interchangeable. ____________________ Honda CG125 Website https://hondacg125.awardspace.com/
Honda CBF125, CBR125 & Yamaha YBR125 Website https://125ccbikeclub.awardspace.co.uk/
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halo123. |
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halo123. Renault 5 Driver
Joined: 23 Jul 2007 Karma :
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Posted: 09:04 - 06 Oct 2007 Post subject: |
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okay everyone sit down and relax!!
The topic was [/quote] Post subject: it250 will it fit in a 125 honda cg/clone frame
--------------------------------------------------------------------------------
https://www.bikepics.com/pictures/554105/
Will the engine in that bike fit in a honda cg 125 clone.
this bike https://www.huntermotorcycles.co.za/NewCarDisplay.aspx?Variant=5421
As i have the cg but have managed to bend the crank shaft with out breaking any covers so i think the engine quality is crap so i would maybe replace the engine with one of these if it fits.
(Nb i bent the crank by over revving and letting clutch out to fast , so now it eats stators( what i know as a magneto)(nb south africa)
and the answer was not with out a h*** of bodging.
then went randomly with an idea for another engine.
then out of control.
so all yall relax now ye hear??
hehe
Chill
And leave the topic alone ____________________ Halo123. =Techie/geek and bike rider ,
current bikes owned ,fix me upper gs 500e missing cdi
cbr 250 virgin colours |
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Old Thread Alert!
The last post was made 16 years, 230 days ago. Instead of replying here, would creating a new thread be more useful? |
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