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Pull Start for 80cc chinese engine

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Old 03-10-2008, 12:11 AM
bjpru66 bjpru66 is offline
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Default Pull Start for 80cc chinese engine

Hi everyone,
My name is Bill and I live in Sunny Tucson Az. 72 here today, good bikeing weather today!
I have a 3 wheel 24 inch Worksman heavy duty 3 speed trike that I am just starting to build with an 80 cc kit.
I bought the optional Pull Start to install. The question I have for anyone who may have installed one of these is;
What is the best method to hold the crankshaft while you loosen the nut on the crank to install the drum and what should the nut be torqued to ?
That's about it for now!
Thanks,
Bill

Last edited by bjpru66; 03-24-2010 at 11:19 AM.
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Old 03-10-2008, 09:29 AM
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Default Re: Pull Start for 80cc chinese engine

hi bill and welcome to the forum. i am sure one of the guys can answer but i am not sure. i would definatly like to here how it works. glad to have you with us!
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Old 03-10-2008, 12:41 PM
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Default Re: Pull Start for 80cc chinese engine

I have no idea but I would like to know as well. I think that pull start is a really good idea.
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Old 03-10-2008, 04:43 PM
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Default Re: Pull Start for 80cc chinese engine

Push a length of rope down the spark plug hole and loosen the bolt. Make sure you leave a bit of rope hanging out so you can pull it out when you are done.
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Old 03-10-2008, 04:49 PM
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Default Re: Pull Start for 80cc chinese engine

pull start makes your engine too wide to fit between the crank. And..I can not see why that is better than a pedal start. Enjoy the ride..
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Old 03-10-2008, 05:08 PM
bjpru66 bjpru66 is offline
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Default Re: Pull Start for 80cc chinese engine

Hey Guys,
Thanks for all the ideas! I got to looking at it last night after I removed the cover and came up with an idea. I took a flat blade screwdriver, large, about a 1/2" tip and put it between the rotor and the mag coil on the side away from the coil. It worked perfectly , loosened the crank nut right up with steady pressure. The kit is really made as a replacement for the engines that come with auto. clutch and pull start.
You have to do a little fitting to make it work as the crank is a little shorter than the one with factory pull start.I took a little metal off the outside of the pull start drum and radiused the top of of the 4 screws that hold the mag to the case as well as putting a thin, 0.020 thick washer under the pull start drum. It then clearde the mag with enough clearance to move freely. Put it back together and it works great. I think as long as you don't muscle it too much it will be fine,
it other words don't get crazy with it when your engine doesn't start on the first pull.
If any body want's to make the mod. I think you will be pleased.
I got the pull start kit from BOYGOFAST on ebay, No problem with him. I think there is a couple more sellers.
Here is a pic of the parts.
Hey Dax, differnt Strokes for different folks! I personally think that if you can pull start it, it makes it easier for several different reasons especially tuning.
Bill

Last edited by bjpru66; 03-24-2010 at 11:19 AM.
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Old 03-10-2008, 05:11 PM
bjpru66 bjpru66 is offline
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Default Re: Pull Start for 80cc chinese engine

Hey Dax, I allready put in a wide pedal crank, about 30.00. No clearance problems here.
Bill
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Old 03-10-2008, 05:27 PM
bjpru66 bjpru66 is offline
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Default Re: Pull Start for 80cc chinese engine

Here is a Pic of it installed
Bill

Last edited by bjpru66; 03-24-2010 at 11:19 AM.
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Old 03-10-2008, 09:16 PM
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Default Re: Pull Start for 80cc chinese engine

I've heard the pull start isn't very reliable and can leave you stranded when the coiled spring breaks.
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Old 03-10-2008, 09:38 PM
bjpru66 bjpru66 is offline
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Default Re: Pull Start for 80cc chinese engine

You don't have to use it all the time as the bike works the same as it worked before you installed it. If it breaks you just pedal start it. Nothing about these kits is very heavy duty, treat them gently and they will be Ok.
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