Motorized Bicycle Engine Kit Forum  

Sponsors



Go Back   Motorized Bicycle Engine Kit Forum > Motorized Bicycle > Motorized Bicycle General Discussion

Motorized Bicycle General Discussion All topics regarding bicycles with engines.

Reply
 
Thread Tools Display Modes
  #1971  
Old 08-08-2011, 05:06 AM
5-7HEAVEN 5-7HEAVEN is offline
Motorized Bicycle Elite Member
 
Join Date: Aug 2008
Posts: 1,912
Default Re: what did you do to your motor bike today?

I had time, so I did preventive maintenance on my bike.

Installed a new "take off" pedal, wiped down the entire bike, realigned the handlebar. Two of my motor mounting bolts were loose, so I cleaned bolts and holes with alcohol and locktited them in. The engine speed had recently been increasing when I cocked the handlebar a certain way. The brass throttle guide on the engine block had completely backed out. Cleaning and locktite fixed that.

Tire pressure checked ok and the tank is full. Cellphone, laptop and school book's in the backpack. Boots, socks, helmet and protective gear are laid out.

I can't wait for daylight and the morning ride to work.
Reply With Quote
  #1972  
Old 08-08-2011, 06:55 AM
darkhawk22's Avatar
darkhawk22 darkhawk22 is offline
Motorized Bicycle Elite Member
 
Join Date: Aug 2010
Location: Acworth, GA
Posts: 733
Default Re: what did you do to your motor bike today?

Finally got the 12V dry cell battery for my light and figured out the math, with some help, on how long it should last before I should charge it. My light is a 35Watt Utility light for now and should last about 30mins. before I need a recharge. My rides around the neighborhood are fairly short so this should be just fine. The 6V rear light with installed generator from mightwonderful on eBay is working great.
__________________
Currently no bike but thinking about starting a new build soon.
Reply With Quote
  #1973  
Old 08-08-2011, 11:29 AM
rustycase's Avatar
rustycase rustycase is offline
Gutter Rider
 
Join Date: May 2011
Location: Left coast
Posts: 2,745
Default Re: what did you do to your motor bike today?

Worked on re-jetting the cns on my skyhawk 48 w stock pipe...
started w #74 & 2nd from bottom on needle.

It flat out fell on it's face. would NOT go! had to pedal back into the barn.

Re-drilled up to the #73 and went to the 2nd from top on the needle and it's running, but still NOT better than before when it was 4 stroking all over the place.

NOTE TO SELF: Be SURE to check gas level in tank before starting jetting tests!

I took off the cns choke cable that had run to the handlebars. did not like the look of all those wires. gotta figger something small to replace it.
From cold it takes a bit of pedaling to start w/o a choke, and maybe 600ft of marginal running at a slight downhill before it will run well. I just don't like that choke cable!!!

the more I ride it the more I want suspension...
NEED a basket!
rc

Got to buy my second gallon of gas today.
Reply With Quote
  #1974  
Old 08-08-2011, 11:48 AM
impression impression is offline
Motorized Bicycle Elite Member
 
Join Date: Feb 2009
Location: Syadney,Australia
Posts: 244
Default Re: what did you do to your motor bike today?

http://motorbicycling.com/f51/modify...-no-32572.html
done that.
today will be my 2nd ride out "testing" my work before i strip the bike down and paint it over the weekend this week.
Reply With Quote
  #1975  
Old 08-08-2011, 04:43 PM
anim8r's Avatar
anim8r anim8r is offline
Motorized Bicycle Elite Member
 
Join Date: Jul 2011
Location: Michigan
Posts: 243
Default Re: what did you do to your motor bike today?

started to replace mounting hardware, realized my allen set is missing.
so I got some touch up paint & fixed my paint job while waiting for the suspect to return.
__________________
Jml
.7 1

Reply With Quote
  #1976  
Old 08-08-2011, 04:48 PM
chrisme chrisme is offline
Motorized Bicycle Elite Member
 
Join Date: May 2009
Location: Maine
Posts: 423
Default Re: what did you do to your motor bike today?

So I*finally got a day off of everything so I put on my new cylinder and rings.
The engine has more compression and runs better than it ever had before.
I have a feeling it was full of metal like some have posted pictures of. So it was ruined the first time I*started it. At least now I*have it all done up properly and it should be good for quite a while.

Of course, after sitting for a few weeks the carb is leaking fuel like a sieve. So I have to take it apart to un-stick the float...
Reply With Quote
  #1977  
Old 08-08-2011, 09:50 PM
ducedave ducedave is offline
Motorized Bicycle Elite Member
 
Join Date: Apr 2011
Location: Mentone Ca.
Posts: 361
Default Re: what did you do to your motor bike today?

Building anther rear wheel I keep busting rims hubs axles and frames!
__________________
edit, amend, fold, spindle & mutilate.
Reply With Quote
  #1978  
Old 08-09-2011, 03:36 AM
Goat Herder's Avatar
Goat Herder Goat Herder is offline
Gutter Rider
 
Join Date: Apr 2008
Location: N.M.
Posts: 6,251
Default Re: what did you do to your motor bike today?

Well its 1:30 am I Man I love summer time the weather is just beautiful! Can't do this in January down here. Changed my carb jet on me 21mm from 90 on the main to 92 stared at the needle for awhile almost sanded it a little lol.

Ive gotten so picky I even store my fuel in a bunch of aluminum sports bottles. I am treating it like race fuel trying to avoid octane evaporation lose. This last adjustment was done on older summer set fuel. Just bought some more aluminum bottles so I can store a whole premixed gallon.

Gonna try a fresh batch of fuel tomorrow to see what the jetting does . I run premium up here at this altitude. Seriously considering a batch of race fuel just to see how it acts. This 21mm carb was so worth it!
__________________
Still gotta have a since of humor.
Reply With Quote
  #1979  
Old 08-09-2011, 10:07 AM
rustycase's Avatar
rustycase rustycase is offline
Gutter Rider
 
Join Date: May 2011
Location: Left coast
Posts: 2,745
Default Re: what did you do to your motor bike today?

#73 main jet is just NOT working for my 48cc skyhawk w/stock pipe.
Original ho was #71. #74 was terrible !
Will take it to #72 today and see how it performs.

NOT 4 stroking anymore, just falls on it's face... nothing there when I give it throttle. No spit back through carby...

I think the ignition is not performing well.
Will probably need to build a jaguar/rohmell cdi before much longer to get this ht operating well.
rc
Reply With Quote
  #1980  
Old 08-09-2011, 12:24 PM
rustycase's Avatar
rustycase rustycase is offline
Gutter Rider
 
Join Date: May 2011
Location: Left coast
Posts: 2,745
Default Re: what did you do to your motor bike today?

Took it back to the #71 ho in the main jet.
Burbling all over the place running fat, but the power??? is back.

It stutters and stammers heading up an incline, then digs in and starts working to get me up over the hill. It's most likely I'm just expecting too much from this tiny little ht motor. 8-O

Will mess with the air mixture adjustment for the idle circuit to see if that will affect overall operation... or how much it can affect rpm in the higher ranges.

Time to work on the nt again...

*!! Twiddling with the float has finally helped. The float valve doesn't seem to be sticking open any longer..

Still need to apply a little grease to the internal pinion ring gear and pinion.
rc
Reply With Quote
Reply

Tags
clutch, motorized bicycle, oil, tensioner

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 12:42 PM.


Sponsors

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
MotorBicycling.com