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Motorized Bicycle General Discussion All topics regarding bicycles with engines.

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Old 08-19-2014, 09:06 AM
KoOni KoOni is offline
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Join Date: Aug 2014
Location: New Orleans, LA
Posts: 18
Default Re: Suggestions on engine to get?

Originally Posted by mkatt4x4 View Post
Get the Grubee kit for $180.
Agreeable price. Do you have experience with it? And who caries it?
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Old 08-20-2014, 10:29 PM
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Davezilla Davezilla is offline
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Join Date: Mar 2014
Location: San Antonio Texas
Posts: 2,710
Default Re: Suggestions on engine to get?

Grubee kits are ok, but they're not as universal as the other kits, meaning not all of their parts are compatible as the other engines out there...

The GT5 type engines are nice and reliable with good manners after upgrades are made but parts can be harder to find

all of these engines are very simple with very few parts which makes them really easy to work on and gain experience on, if you mess up on a porting job, it's only $25 for a new cylinder or $10 for a new piston, or you can buy a pre ported cylinder from Fred or a few other sellers along with a Puch or fred head and a rampped piston for not too much more for an instant boost in power and performance. The cool part is that you can learn these engines really fast and easy due to their simplicity and upgrade as you learn. There's lots of info in here on that as well as lots of info on who the better sellers are and who makes the best upgraded parts etc etc... Read up in here and you'll find out just how easy these are to build maintain, and work on...
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Old 08-21-2014, 04:42 AM
Theon Theon is offline
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Join Date: Jan 2014
Location: FNQ Australia
Posts: 1,440
Default Re: Suggestions on engine to get?

Get the Dax or MBR motor.
It has a 40mm 'ballanced' crank.
the others have a 38mm crank that could be 'rough as guts'.
The longer stroke Will give you better pulling power.
The 'balanced crank will let it rev further and smoother.
The Ebay motors I have bought have required total strip and rebuild including the replacement of dodgy parts, then still be burdened with inferior parts.
You get what you pay for.
Unless you have fabrication skills, stick to the 'China Girl' you get everything you need in the kit and it can be installed in a few hours.
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