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Author Topic: Engine options  (Read 134 times)

Nic

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Engine options
« on: 11 October 2021, 08:25:03 pm »
  Hi all , so the standard engine for a cyclekart is the gx200, are there other options out the for example motorbike engines, i ask this because i have a 125cc moped engine with cvt transmission the engine is rated at about 12hp , so it has more horse power than the gx200 engine but less capacity so it might be an equal alternative !!!!, i was thinking of taking the wheel off the output shaft and fitting a sprocket to run a chaindrive to the axle .. How would this go down in the cyclekart world !!!?.

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RhysN

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Re: Engine options
« Reply #1 on: 12 October 2021, 04:24:02 pm »
Hi Nic, if you go to the section of the forum which is titled "Start Here" you will find the subsection with guidelines http://www.cyclekartsgb.com/what-is-a-cyclekart/what-is-a-cyclekart-and-rulesguidelines.
This will give  you what was our opening of the "traditional" guidelines to accommodate your thoughts. Remember it's not supposed to be a horsepower race :)

ChrisS

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Re: Engine options
« Reply #2 on: 13 October 2021, 09:54:12 am »
Chris Brown's Morgan uses a scooter engine, 125 I believe.

RhysN

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Re: Engine options
« Reply #3 on: 13 October 2021, 02:11:32 pm »
As Chris had already built his Morgan the GB guidelines were framed they are at variance with the rest of the world so as to be inclusive :)

StefanN

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Re: Engine options
« Reply #4 on: 13 October 2021, 02:21:31 pm »
In Argentina they use all sorts of engines and gearboxes.   I quite fancy building a Cyclekart type of vehicle with a different, probably old, engine in it.

Having organised some events this year I know insurers and other organisations are keen to know there’s a defined formula that people stick to.

Chris Brown

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Re: Engine options
« Reply #5 on: 13 October 2021, 02:55:46 pm »
My Morgan uses the complete back end of a 125cc scooter, started off as 7.5hp, but the exhaust change has probably boosted it to about 8. I really must get back to it, other aspects of life have got in the way this year.

Nic

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Re: Engine options
« Reply #6 on: 13 October 2021, 09:37:09 pm »
Having done a little bit of looking around on the internet i think my 125cc lintex engine is probably about 9HP , so it should not be too powerfull and i can play around with the sprocket sizes as i plan to use a peerless diff for the axle..

Chris Brown

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Re: Engine options
« Reply #7 on: 13 October 2021, 11:27:08 pm »
The GY6 Honda clones are generally under the 10hp mark. It's only the brands like Honda, Yamaha, Piaggio that get over that, up to 15hp in some cases.

jim

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Re: Engine options
« Reply #8 on: 14 October 2021, 06:02:16 am »
Hi Nic, I had a look at a Lintex 125 engine on ebay and I can't see a reason why you should have a problem fitting one into a CK chassis. The position of the output shaft with the drum brake could give you a few options of engine position. Those moped engines are a similar layout to quad bike ones and that gives people options to use one of those maybe. It looks like its gonna be a very interesting, fun build and I look forward to your youtube videos.

Chris Brown

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Re: Engine options
« Reply #9 on: 14 October 2021, 04:04:32 pm »
I'd recommend putting a disc brake on the rear axle rather than using the drum. Mine has the drum brake, and it's uninspiring, I'll look at fixing the cable down first, but I might end up converting it to hydraulic, at the moment it's spongy. 

Nic

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Re: Engine options
« Reply #10 on: 14 October 2021, 07:07:08 pm »
My lintex engine has a disk brake on the rear wheel, also has the option to fit drum brakes but you would be putting more strain on the chain , if the chain broke you would lose your brakes !!, so yep i will be going for twin discs on the rear axle as am useing a peerless axle,