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Motorized Bicycle General Discussion All topics regarding bicycles with engines.

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  #641  
Old 03-30-2012, 05:24 AM
MEASURE TWICE MEASURE TWICE is online now
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

Anyone have a grip on the twist grip throttle such it spins and turn the cable compressing the return spring, but may slip a little as the grip is not one with the cylinder part of the mechanism that turns the cable? It is in a way, but only has so much friction and with a weaker return spring the cable does not return all that well.

The cable is not kinked or without graphite lube.

I'm going the contact the shop I bought it from and see what they know... also the mfr... don't have the package anymore.

If no help and I have to find a way, I'll add some anything to anything rubber cement and slide the grip on and hope it works better.

Maybe a roll tension spring to make it as one! Just kidding... but have to have this thing fixed.

MT
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  #642  
Old 04-02-2012, 02:29 AM
MEASURE TWICE MEASURE TWICE is online now
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

I found this web page:

http://www.dansmc.com/throttles.htm

I hear just shimming with electrical tape or glue had been done. I'll try putting the tape on, but first I'll have to see how easily the hand grip comes off. Maybe need to lube it? It already is some what loose but only I know spinning around. To take it off axlily I don't know how much friction there is in that plane.

I will check with the shop I bought it from later today and see if they have ideas too.

MT
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  #643  
Old 04-03-2012, 01:49 AM
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fugit fugit is offline
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

I went the whole 9 yards on the tank. I bought the Kreem kit and washed out tank with chain and detergent, rinsed with water well, Soaked it full of phosphoric acid for 5 hours using a little rubber stopper where fuel valve goes then emptied, used the stuff that makes water go away(dont know the name of it but was in kit), and then spent a few hours with the kreem and lined the inside of the tank. The typical kreem kit is 50 bucks and wil do 10 or 12 tanks this size.

I read somewhere here about securing bolts with finger nail hardener but found some that actaully seeks out gaps and ridges. Used that on all screws on bike and non hot stuff.

Used two layers of teflon tape at fuel petcock when installing.

Pre spun screws on tank before installing about 1/4 of the way - much easier then trying to hold tank still and thread new screws over the paint.

When drilling for kill switch and throttle assembly i dabbed the bottom of the plastic peg on inside of kill switch with white paint and set the assembly carefully on the handle bars and removed. I had a perfect spot to drill after it dried a bit. I used a small drill bit to get stated and worked my way up to make hole.

Really enjoyed manic mechanics motor mounts Elegant

Last edited by fugit; 04-16-2012 at 03:24 AM.
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  #644  
Old 04-15-2012, 08:54 PM
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fugit fugit is offline
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

Well I got to do my first real improvision and modification today. Just before I went for a ride I pulled my clutch in and the spring button that holds the clutch in flew up and out across the patio. I found the spring and the button and saw it was cheaply held in place by a rivet - which broke hence sending the button flying.

So I found a small nut that is a lock nut that is used to hold fenders in place. The nut was a tad bigger then the bottom of the pin where the rivet was but the locking vinyl inside the lock nut snugged in good. So I filled the bolt with JBWELD and slid it on. I took a wrench and carefully snugged the end of the pin into the vinyl and then wiggled it to align the nut. It set up in about 15 minutes and has been working perfectly since.

The picture is the clutch handle and button bottom in the locked position.
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  #645  
Old 04-20-2012, 10:53 PM
flmotorbikes flmotorbikes is offline
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

Becarefull messing with the throttle the worst that can happens is it will tend to stick
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  #646  
Old 04-21-2012, 05:48 AM
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george_n_texas george_n_texas is offline
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

Yea we don't want no one burnin rubber in this neighborhood LOL
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  #647  
Old 04-21-2012, 06:13 AM
Bikeguy Joe Bikeguy Joe is offline
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

Yep.
.
.
.
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  #648  
Old 04-21-2012, 10:47 AM
KANNONBALL13 KANNONBALL13 is offline
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

Here is my tip....I do not think that 91 oct. makes any difference. I had run 85 oct at 6000 feet above sea level, and I think it slowed everything down.

Also, I changed out my plug wire for an 8 mm, and upgraded to a Boch plug that is hotter, and I think things slowed down as well.
All I want is a flat run at 25mph it that asking to much?
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  #649  
Old 04-21-2012, 12:51 PM
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Goat Herder Goat Herder is offline
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

Quote:
Originally Posted by KANNONBALL13 View Post
Here is my tip....I do not think that 91 oct. makes any difference. I had run 85 oct at 6000 feet above sea level, and I think it slowed everything down.

Also, I changed out my plug wire for an 8 mm, and upgraded to a Boch plug that is hotter, and I think things slowed down as well.
All I want is a flat run at 25mph it that asking to much?
What are you using for a motor?
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  #650  
Old 05-08-2012, 11:55 PM
anonymous1 anonymous1 is offline
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Join Date: May 2012
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

Now all i need are blinkers, horn, headlight
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