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  #8661  
Old 05-07-2016, 12:58 PM
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tgaydos tgaydos is offline
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Default Re: what did you do to your motorized bicycle today?

I mounted my disc brake on the front.

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I need to change the forks out though as when I was taking it apart to paint I noticed the bearing on the top of the head tube was completely mashed and dug into the fork a little bit. Luckily I had another bearing to put in it's place but the damage is done.

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  #8662  
Old 05-07-2016, 11:34 PM
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Default Re: what did you do to your motorized bicycle today?

the demise of one fork led to the rise of another.



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  #8663  
Old 05-11-2016, 01:09 AM
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mogollonmonster mogollonmonster is offline
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Default Re: what did you do to your motorized bicycle today?

Got my new mag and CDI from Dax today, my bike has never run so smooth! I've got to do a speed run after work tomorrow, once I put the speedo back on, I've already got the 44t back on, for now.

My used plastic fenders came off in pieces, so it's time to find a new set of mud catchers... Maybe not... Also tomorrow I'll finish up my new rack, which is an old one I've cobbled some baskets to, we'll see how it works out. Think I'll try out a dynamo head light, I'm not yet ready to wire a battery into my lighting system, but ise thinking on it. New breaks will probably be my next investment, u figure I've gotten just about all the use out of these I can. It is no longer possible to skid a wheel, and levers, return springs, heck everything has just about had it. Not sure if I'll go to a bike shop and have it Johnny on the spot, or go online, and pay a decent price...
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  #8664  
Old 05-14-2016, 07:01 PM
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Tony01 Tony01 is offline
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Default Re: what did you do to your motorized bicycle today?

Removed my motor last night, shaved the head another .005" for a total of .020", cleaned all the carbon buildup off, lapped the valves in and set the lash, which was off by only .001" on the intake. Also ported/polished the ports some more as I didn't do such a great job last time. The exhaust port is sooo smooth now, threads cut down cause I'm using a bolt on header. Decided to start the painting process, masked off all parts where needed and finished painting the head and cooling shrouds, currently finishing the primer coats on the block.
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  #8665  
Old 05-14-2016, 09:24 PM
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Default Re: what did you do to your motorized bicycle today?

And the block is painted. I decided to paint the head the same color, had it grey but it just didn't look right.
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  #8666  
Old 05-15-2016, 08:36 PM
BOYGOFAST BOYGOFAST is offline
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Default Re: what did you do to your motorized bicycle today?

Another important thing is having enough power to stop the bike once it is set in motion .
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  #8667  
Old 05-15-2016, 08:44 PM
BOYGOFAST BOYGOFAST is offline
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Default Re: what did you do to your motorized bicycle today?

Good picture of a worn disk,they only give you a few thousandths on those but when they heat up I'd bet they fade or bend new .My coaster brake gets hot in a few minuets and won't work much better but has not broken yet.

Last edited by BOYGOFAST; 05-15-2016 at 08:46 PM.
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  #8668  
Old 05-15-2016, 09:46 PM
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mogollonmonster mogollonmonster is offline
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Default Re: what did you do to your motorized bicycle today?

Well I pulled the head today...

After more than 2800 miles, the cylinder walls themselves look pristine... The crosshatching done in China looks untouched... Top of piston and combustion chamber are filthy and coated in carbon of course, as I just can't seem to lean it out. Once I've got a second base gasket in hand, I'll pull the jug and clean up the casting slag in the exhaust port. The slag is reducing the port size by approximately 30%, and I believe it to be the cause of my over rich issues.
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  #8669  
Old 05-22-2016, 11:42 AM
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mogollonmonster mogollonmonster is offline
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Default Re: what did you do to your motorized bicycle today?

So yesterday, I bought some gasket maker, needle files and a fresh pair of big girl panties, pulled my jug, and finally cleaned the slag out of my exhaust port.

A note to all fellow patrons of Ace hardware. General brand, carried by my local ace is junk. I wore out the round and half round files in no time at all. Either of the other two sets at my ranch would be untouched, these craptastic files are almost smooth after their battle with the best beer cans China has to offer. The handle and case that came with the set are of higher quality than the files.

Beyond all that, this was the first port work of any kind that I've ever undertaken. I hope I didn't screw anything up lol, I made sure to bevel the edges to avoid ring snag, and only made the opening of the port match the port itself.

I've got to remount the motor into Tanglebones and wait for the exhaust gasket sealer to set up. Stand by for testing.
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  #8670  
Old 05-22-2016, 08:24 PM
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mogollonmonster mogollonmonster is offline
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Default Re: what did you do to your motorized bicycle today?

It worked!!!! Runs much smoother now, almost no fourstroking at all, just a little before it warms up. It definitely leaned out a bit too, no more flat spot in the throttle, and my plug looks good. Lots more power throughout the rev range, but especially down low. I was given another stock exhaust, this one has a significantly longer header, which will clear the pedals better, and should help the lower end a little, I'll dink with it later.
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