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Motorized Bicycle General Discussion All topics regarding bicycles with engines.

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  #2901  
Old 01-05-2012, 07:02 AM
5-7HEAVEN 5-7HEAVEN is offline
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Default Re: what did you do to your motor bike today?

I made a new front motor mount from 1/4" aluminum. Now the chain can be adjusted. All it takes is 1/4-3/8" adjustment. Just finished @ 2am.

Can't wait for daylight to commute to work!
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  #2902  
Old 01-05-2012, 09:28 PM
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Skarrd Skarrd is offline
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Default Re: what did you do to your motor bike today?

got a new spark plug in that should prove much better than a normal plug.

i'll let the pictures do the talking.

it's a NGK BU8H
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  #2903  
Old 01-05-2012, 11:04 PM
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CTripps CTripps is offline
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Default Re: what did you do to your motor bike today?

Finally had a break in the weather so I got to ride to work today. Good run each way, had to tighten a couple of spokes before heading home, but that's why the spoke wrench lives on the 'biner with my keys. It's the original rim, so a few loosen up a bit sometimes.
It still has that 'new muffler smell' but that should fade in a couple more rides. I haven't got the lights aimed quite right yet. They helped in the blind curve, but aren't throwing the light far enough ahead for me right now.
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  #2904  
Old 01-05-2012, 11:33 PM
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GearNut GearNut is offline
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Default Re: what did you do to your motor bike today?

Quote:
Originally Posted by Skarrd View Post
got a new spark plug in that should prove much better than a normal plug.

i'll let the pictures do the talking.

it's a NGK BU8H
Please let us know how it works out.
That is quite an interesting looking plug for use in an engine.
It resembles a mechanic's test plug.
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  #2905  
Old 01-05-2012, 11:50 PM
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rustycase rustycase is offline
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Default Re: what did you do to your motor bike today?

The plug sure fills the hole a lot better than a stock one, skaard! I'll bet it even bumps the compression a tad. Wonder if the coil has enuff poop to drive that plug???
Best
rc
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  #2906  
Old 01-06-2012, 04:48 AM
5-7HEAVEN 5-7HEAVEN is offline
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Default Re: what did you do to your motor bike today?

Fours of sleep and I was biking to work. Previously the chain was as tight as "high G" on a guitar! After the new motor mount was installed, chain adjustment was good. Tension was the same at day's end. Previously, with the old mount and a Chinese freewheel, the chain would tense and loosen within a few strokes, then tense up again. Now, chain tension is spot on and consistent. i can sense there is less undue tension on the chain, freewheel, sprocket, even the bottom bracket cartridge.

The ride to and from work went without incident. You never know how the commute will go without a test ride.

I had been searching locally for M6-80mm length allen bolts for years. The correct bolts were found on McMaster-Carr reasonably priced. They arrived today and were quickly installed.

I can't wait for daylight and my commute to work!
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  #2907  
Old 01-06-2012, 06:23 PM
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anim8r anim8r is offline
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Default Re: what did you do to your motor bike today?

It was almost 60 degrees F today, January 6th, in Michigan. Had to go for a ride.
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  #2908  
Old 01-06-2012, 07:15 PM
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GearNut GearNut is offline
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Default Re: what did you do to your motor bike today?

I rolled it out the back door of my garage so I would have room to work on my air compressor.
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Does not come with a fortune cookie."
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  #2909  
Old 01-06-2012, 08:10 PM
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Skarrd Skarrd is offline
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Default Re: what did you do to your motor bike today?

MM gen 2 head: check
BU8H NGK plug: check
Piston to head clearance: check
dellorto clone carb: check

*starts bike* super low compression (didn't let rtv cure long enough)
me: balls to it.. *keeps pedaling until engine starts catching. then give a gentle lap around neighborhood, stops, checks the bike. starts it (harder to start this time).*

*gave it gas*
me: HOLY S***!!! *hangs on for dear life!!!*

verdict... this bike owns my last build now!
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Quote:
Originally Posted by biknut View Post
Traditional bicycle riders think we're cheaters. Non riders think our bikes are toys. Bicycle shops think we're a threat. Tree huggers think we're polluters. The police don't know what to think.
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  #2910  
Old 01-06-2012, 10:22 PM
MEASURE TWICE MEASURE TWICE is offline
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Default Re: what did you do to your motor bike today?

Got stainless steel tubing for exhaust system out back of motorbike. 3 ft with 3/4 thread and two adapters to add at ends to make it to 1/2 pipe thread on the Briggs engine/spark arrestor muffler. Just will remove the rubber gasket for the water pipe use and put the Permatex 700 F copper forma-gasket stuff on the threads. Also go the clamps that I can hang the tube along with other brackets that I already have for assorted stuff to do on the bike. About $44 for the stuff for todays purchases.
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