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icklejitta
Derestricted Danger



Joined: 19 Dec 2007
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PostPosted: 10:56 - 05 Nov 2008    Post subject: 4 strokes.... Reply with quote
Simple one this one, are 4-stroke engines restricted from the manufacturer?
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Cigaro
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Joined: 28 Mar 2007
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PostPosted: 11:00 - 05 Nov 2008    Post subject: Reply with quote
Not usually (on the smaller bikes at least). They don't produce enough power to be over the 14.5hp or whatever it is that you're allowed on a CBT.

Yours definitely won't be restricted, as being 100cc it doesn't count as a moped.

Obviously some bikes (600s, 1000s, etc) are restricted to 33bhp, or just restricted by law in some countries Thumbs Up
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rotax81
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Joined: 10 Sep 2008
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PostPosted: 11:01 - 05 Nov 2008    Post subject: Reply with quote
not that simple with little to go by.

my zx7r and 636's are not.

if 125 then i should imagine they will be restrited if they had to be.
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Wafer_Thin_Ham
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Joined: 18 Nov 2005
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PostPosted: 11:03 - 05 Nov 2008    Post subject: Reply with quote
rotax81 wrote:


if 125 then i should imagine they will be restrited if they had to be.


Disagree, most of the newer 4 stroke 125's are designed to make 14.6bhp, nothing more. There is nothing to derestrict them, that's all the power they make.
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Cigaro
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Joined: 28 Mar 2007
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PostPosted: 11:03 - 05 Nov 2008    Post subject: Reply with quote
rotax81 wrote:
not that simple with little to go by.

my zx7r and 636's are not.

if 125 then i should imagine they will be restrited if they had to be.


Can you name a 4t 125 that is capable of producing more than the learner legal limit (in standard form at least)?
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rotax81
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Joined: 10 Sep 2008
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PostPosted: 11:11 - 05 Nov 2008    Post subject: Reply with quote
lol... as i said IF THEY HAD TO BE Thumbs Up
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Wafer_Thin_Ham
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Joined: 18 Nov 2005
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PostPosted: 11:17 - 05 Nov 2008    Post subject: Reply with quote
rotax81 wrote:
lol... as i said IF THEY HAD TO BE Thumbs Up


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G
The Voice of Reason



Joined: 02 Feb 2002
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PostPosted: 11:49 - 05 Nov 2008    Post subject: Reply with quote
TheBassJunky wrote:

Can you name a 4t 125 that is capable of producing more than the learner legal limit (in standard form at least)?

CB125T (or something like that)... but that was before the time's of the (at the time) 12hp restriction.
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Faraz
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Joined: 26 May 2007
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PostPosted: 16:00 - 05 Nov 2008    Post subject: Reply with quote
Nope.
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stevo as b4
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Joined: 17 Jul 2003
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PostPosted: 21:35 - 05 Nov 2008    Post subject: Reply with quote
The old Honda CB125T was rated at 16.5bhp. It revved to 11000rpm easily and was as fast as the two strokes like the RD125 or GT125 of the day.

I have heard things about the new Yamaha Minerelli 125 4T unit as used in the YZF125R etc. It's a liquid cooled DOHC 4valve engine that seems a bit over the top design and cost to build wise for just 14.6bhp. I'm sure i read that it could have made around 20bhp if required to do so.
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Old Thread Alert!

The last post was made 17 years, 56 days ago. Instead of replying here, would creating a new thread be more useful?
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