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Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles

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  #1  
Old 07-22-2009, 10:50 PM
Mike Hunt Mike Hunt is offline
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Default how cold before the bike doesn't start?

whats the coldest temperature that these bikes can run; is it possible to modify them to make it run at even lower temperatures?
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  #2  
Old 07-22-2009, 10:57 PM
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Cabinfever1977 Cabinfever1977 is offline
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Default Re: how cold before the bike doesn't start?

metal plates on the side of the carb would direct air from the engine around the carb.
a air box or with hose or pipe that gets heated next to the engine would heat the intake air. and a drop of drygas in the tank would keep the gas from freezing. i bought my engine after winter was over and havnt used my bike in the winter yet,but i will and i belive it will run even at artic temperatures. plus i keep my bike in my apartment,no cold starts here. and the engine stays plenty hot while running,enough i could cook on it like a barbique.

Last edited by Cabinfever1977; 07-22-2009 at 10:59 PM.
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Old 07-22-2009, 11:11 PM
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2door 2door is offline
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Default Re: how cold before the bike doesn't start?

One of our members is from Moscow Russia and has posted videos of himself and his club members riding in the dead of winter...Cold enough for you?
Actually there might be a limit but it has to be pretty darn cold. I've riden in winter often in Denver Colorado and when it's real cold I'll give the carb a shot of quick-start, ether, and after a few seconds of warm up and some choke my engines perform the same as they do in summer; maybe a little better. Hope this answers your question.
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Old 07-23-2009, 08:09 AM
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Norco John Norco John is offline
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Default Re: how cold before the bike doesn't start?

I'll have to find that out this winter. I had a Harley-Davidson that started one night at 13 below.
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Old 07-23-2009, 08:19 AM
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Bikeguy Joe Bikeguy Joe is offline
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Default Re: how cold before the bike doesn't start?

The coldest I've ever run anything at was -22 degrees F. These motorized bicycle engine kits will fire at just about any temp. you want to ride them in.
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Old 07-23-2009, 12:44 PM
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Finfan Finfan is offline
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Default Re: how cold before the bike doesn't start?

If it is so cold the bike won't start you shouldn't be outside anyway!!!
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Old 07-23-2009, 06:41 PM
Mike Hunt Mike Hunt is offline
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Default Re: how cold before the bike doesn't start?

lets say -20C is the coldest i will be riding, will it start or do i need mods?
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Old 07-24-2009, 08:32 AM
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Bikeguy Joe Bikeguy Joe is offline
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Default Re: how cold before the bike doesn't start?

Quote:
Originally Posted by Mike Hunt View Post
lets say -20C is the coldest i will be riding, will it start or do i need mods?
The bike will start with a little extra priming, you however, will need mods.
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Old 07-24-2009, 11:44 AM
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Finfan Finfan is offline
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Default Re: how cold before the bike doesn't start?

I think at -20 F I'd be more worried about the tires and tubes cracking! For that matter I would also be worried about small bits like fingers and toes breaking off!
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Old 07-24-2009, 12:45 PM
matt167 matt167 is offline
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Default Re: how cold before the bike doesn't start?

at really cold temps, you could have cold seize issues just as a snowmobile can have.... might also be a good idea to change jetting on the carb but, it should run at any temp..
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