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Motorized Bicycle General Discussion All topics regarding bicycles with engines.

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  #6361  
Old 11-10-2013, 01:39 AM
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Huffydavidson Huffydavidson is offline
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Default Re: what did you do to your motorized bicycle today?

Today rode this Dax engine for one of last time for a bit, at least until my New GT-2a frame arives YEA!!! BLUES GETTING Fred engine when the next rain days come. Until then we'll pray it rains like he!!. Finished custom tubing (1.25") fabrication and ready for the welder Monday morning. Ordered a bag of racing muffer repacking glass to repack the silencer and not compromise performance this massive expansion chamber !!!!
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  #6362  
Old 11-10-2013, 02:45 AM
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Default Re: what did you do to your motorized bicycle today?

Quote:
Originally Posted by crassius View Post
I note that it may be the case that a larger gap could cause the spark to wait fractionally for the voltage to climb higher to jump the gap - in fact, a too large gap may cause the spark to wait forever.

Also, this may affect the quality of the spark in terms of its ability to start a good burn.
You are correct on both accounts.
However.. changing the spark plug gap to tune the timing is not the best or sometimes correct way to go about it.
The spark plug gap should be set up for best overall performance and burn needs of the engine covering the entire range of RPM's and loads encountered.
Let the ignition system do it's job of controlling when the spark occurs.
Note: spark plug gap also affects it's heat saturation, you can affect a spark plug to operate hotter by opening up the gap a little. Closing it will cause it to run a little cooler. This can help tune the operating heat range of the spark plug to be more or less resistant to fouling or overheating.
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Old 11-10-2013, 06:22 AM
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Default Re: what did you do to your motorized bicycle today?

I've done a bunch of stuff lately with my bike, but today's couldn't go unreported.
I fired up my new chopper for the first time. Took it around the block a bunch of times to get started on running it in.
Happy to hear its voice. My custom header work might have been a lucky combo as it's nice and quiet.
Here's a pic as it is. There's still a lot to do to neaten it up and paint it, but I'm going to run all the bugs out before addressing that.
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  #6364  
Old 11-10-2013, 06:41 AM
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Default Re: what did you do to your motorized bicycle today?

Cool, - nothing like hearing something run for the first time. Your bike's looking good.
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Old 11-10-2013, 08:58 AM
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Default Re: what did you do to your motorized bicycle today?

Awesome looking bike! ✴
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Old 11-10-2013, 02:08 PM
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Default Re: what did you do to your motorized bicycle today?

Bike looks great. Nothing nicer than hearing it sing for the first time unless it's the first ride around the block.

Steve.
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Old 11-10-2013, 04:54 PM
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Default Re: what did you do to your motorized bicycle today?

Today will be 'seal everything' and solder connections day for the new bike.

I took it up the lane (uphill) behind the garage and on the way down when I engaged the motor it went 'whut-whut-whut-POP-whut-whut-POP-POP-whut-BrAP! BraAaAaAAAAAAAAAA!' started! It's alive!

There's not much to it, but I posted a thread over here for it.
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Old 11-10-2013, 07:14 PM
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Default Re: what did you do to your motorized bicycle today?

Today I rode the bike around the neighborhood a few times. I have been working so much lately haven't had time to ride. My next upgrade is the bigger chain. I'm using bicycle chain for the drive side.
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Old 11-10-2013, 09:43 PM
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Default Re: what did you do to your motorized bicycle today?

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Originally Posted by Danschutz View Post
SBP Expansion install first attempt.



Dan.
Better get yourself a heat shield for your family items... if you get what I mean...
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  #6370  
Old 11-10-2013, 09:50 PM
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Default Re: what did you do to your motorized bicycle today?

Chestnuts roasting on an open fire...
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