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Chituma 125 de-restrict

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bully
L Plate Warrior



Joined: 03 Sep 2005
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PostPosted: 17:58 - 03 Sep 2005    Post subject: Chituma 125 de-restrict Reply with quote
Hi, I have just purchased a chinese import it's a Chituma 125cc enduro. I have been told by many people it has the Honda cg 125 engine in it. The top end isn't up to much about 40- 45 mph. Ive been told there may be a restriction on the cdi unit. Does any body know how to de-restrict it? Thanks Martin
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Kickstart
The Oracle



Joined: 04 Feb 2002
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PostPosted: 18:21 - 03 Sep 2005    Post subject: Reply with quote
Hi

Doubt it would be restricted in that way. The CG engine is no ball of fire, and a sit up enduro style riding position will hit the performance a bit but I would still expect 55mph at the very least (assuming your speedo is averagly accurate).

How old is the bike? Has it been serviced? Check over the service items first (valve clearances, ignition timing if adjustable, points if fitted, air filter, etc) and see if you can find anything wrong.

All the best

Keith
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nick.h
World Chat Champion



Joined: 12 Sep 2004
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PostPosted: 18:22 - 03 Sep 2005    Post subject: Reply with quote
I assume that the bike is new.

If so have you ran it in?

Nick
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bully
L Plate Warrior



Joined: 03 Sep 2005
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PostPosted: 23:23 - 03 Sep 2005    Post subject: Reply with quote
Nick.H wrote:
I assume that the bike is new.

If so have you ran it in?

Nick


Yes it is new and is on the way to being run in. The guy I bought it off said that the engine would loosen up the more it was rode and it does seem that way. But he did say that all chinese bikes had got to have restriction on them and that he thought that it was in the cdi. As the revs seem to fall away at top end speed. Any ideas?
Martin
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2Smoke
Crazy Courier



Joined: 15 Apr 2005
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PostPosted: 20:08 - 04 Sep 2005    Post subject: Reply with quote
bully wrote:
Nick.H wrote:
I assume that the bike is new.

If so have you ran it in?

Nick


Yes it is new and is on the way to being run in. The guy I bought it off said that the engine would loosen up the more it was rode and it does seem that way. But he did say that all chinese bikes had got to have restriction on them and that he thought that it was in the cdi. As the revs seem to fall away at top end speed. Any ideas?
Martin


As a guess the 'restriction' will be the shite quality of build in the engine. Either that or there is a restrictor but its there because the manufacturers doubt its longetivity if its taken past 50mph Laughing

Sorry!
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mchaggis
World Chat Champion



Joined: 10 May 2004
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PostPosted: 20:12 - 04 Sep 2005    Post subject: Reply with quote
2Smoke wrote:
Either that or there is a restrictor but its there because the manufacturers doubt its longetivity if its taken past 50mph Laughing

Sorry!


7000km on the clock so far, being ragged all the way! Razz

(Only one seizure, but that was my fault for being lazy in checking the oil. Whistle)

The 30+ year old design is probably what limits it, as well as a rather poor cloning of the CG engine. Reverse engineering is all very well and good, but it isn't the same as designing it in the first place.
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Old Thread Alert!

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speeddevil
Two Stroke Sniffer



Joined: 25 Sep 2007
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PostPosted: 13:18 - 06 Nov 2007    Post subject: 50cc Reply with quote
hi my freind owns the 50cc version of this bike and it is restricted and does around 40 is there anyway he can get more speed from it thanx Smile
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chris-red
Have you considered a TDM?



Joined: 21 Sep 2005
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PostPosted: 13:26 - 06 Nov 2007    Post subject: Re: 50cc Reply with quote
speeddevil wrote:
hi my freind owns the 50cc version of this bike and it is restricted and does around 40 is there anyway he can get more speed from it thanx Smile


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Mudskipper
World Chat Champion



Joined: 22 Aug 2006
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PostPosted: 13:35 - 06 Nov 2007    Post subject: Re: 50cc Reply with quote
speeddevil wrote:
hi my freind owns the 50cc version of this bike and it is restricted and does around 40 is there anyway he can get more speed from it thanx Smile


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Kal
World Chat Champion



Joined: 02 Jan 2007
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PostPosted: 14:32 - 06 Nov 2007    Post subject: Re: Chituma 125 de-restrict Reply with quote
bully wrote:
Hi, I have just purchased a chinese import it's a Chituma 125cc enduro. I have been told by many people it has the Honda cg 125 engine in it. The top end isn't up to much about 40- 45 mph. Ive been told there may be a restriction on the cdi unit. Does any body know how to de-restrict it? Thanks Martin


At best it will be a bad copy of one, the only Honda CG engines coming out of China are in CG125s badged as Hondas

A lot of these Chinese Bikes with CG engines don't even have copies of CG engines in them.

A Honda CG125 should be able to make 60-70mph depending on its state and weight/pyschosis of the rider.
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Scotch Bonnet
Scooby Slapper



Joined: 23 Jul 2007
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PostPosted: 16:05 - 06 Nov 2007    Post subject: Re: Chituma 125 de-restrict Reply with quote
Kal wrote:
A Honda CG125 should be able to make 60-70mph depending on its state and weight/pyschosis of the rider.

Should be worried about my weight, or reassured about my mental health that i've still not quite managed to wring 70 out of mine in that case?
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Old Thread Alert!

The last post was made 18 years, 247 days ago. Instead of replying here, would creating a new thread be more useful?
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