Motorized Bicycle Engine Kit Forum  

Sponsors



Go Back   Motorized Bicycle Engine Kit Forum > Motorized Bicycle Mechanical Components > Lighting and Electrical

Lighting and Electrical Things that go ZOT! Ignition components, batteries, lighting and accessories

Reply
 
Thread Tools Display Modes
  #1  
Old 05-29-2010, 02:52 AM
jrol22's Avatar
jrol22 jrol22 is offline
Motorized Bicycle Senior Member
 
Join Date: Mar 2010
Location: IL
Posts: 84
Default Gutting the muffler and headlight, tail lights..

Theres this kid that I met today after getting off work.
He also owns a motorized bicycle and says that he gutted the muffler completly and hence that gives him more speed and torque. my question is, is that healthy for our China girls?
I mean if you think about it, that would be pretty much like an expansion chamber without the end...so it seemed plausible.

Finally, What about plugging a headlight onto the white wire of the engine?? I feel that is extra work for the magneto, but I do ALOT of riding at night and so its something I've been thinking about. And is it possible to also hook up a tail light as well?? I was thinking of plugging in the headlight and rigging a switch to it, that way it would only be on when I need it on, same with the tail light.

I hope someone can shed some light on this.

Thanks!
Reply With Quote
  #2  
Old 05-29-2010, 11:07 AM
whitey whitey is offline
Motorized Bicycle Elite Member
 
Join Date: Mar 2010
Location: Western Australia
Posts: 246
Default Re: Gutting the muffler and headlight, tail lights..

12 VOLTS MINI-GEN MAX For Motorized Bicycle Lighting - eBay (item 400108733087 end time Jun-09-10 22:17:08 PDT)
Reply With Quote
  #3  
Old 05-29-2010, 11:12 AM
bairdco's Avatar
bairdco bairdco is offline
a guy who makes cool bikes
 
Join Date: Aug 2009
Location: living the dream in southern california
Posts: 5,941
Default Re: Gutting the muffler and headlight, tail lights..

this forum's full of threads on all those subjects, just do some searching...

on the exhaust, if you gut the muffler, it's gonna sound like a nitro burning leaf blower, and will ostracize you from your neighbors, and it'll make it real easy for the cops to find you.

a lot of people will tell you these motors need back pressure to run well, so gutting it's not a good idea, which is true in theory, but it doesn't really seem to matter too much, going by the amount of people here that have done it.

i gutted mine, but added a Supertrapp universal, clamp on muffler. it's louder than stock, but not obnoxious, and added a boost, much like an expansion chamber.

in the end, it's up to you and how annoying you want your bike to sound,

as for the wires, there's a lot of info on that around, but i never tried it so i dunno.
Reply With Quote
  #4  
Old 05-30-2010, 12:38 AM
FileStyle's Avatar
FileStyle FileStyle is offline
Motorized Bicycle Elite Member
 
Join Date: May 2008
Location: Decatur,IL
Posts: 724
Default Re: Gutting the muffler and headlight, tail lights..

the white wire will run both tail and head lights. However not when cold and you can tell when it takes from the spark of the motor! so I just run tail light from the white wire and rechargeable nite rider mini-minewt head lights. the tail light works good with the motor, either thru switch or direct. I have done both. seems to work good. use a 6volt 3 watt bulb for best results.
__________________
FileStyleCycles
Reply With Quote
  #5  
Old 05-30-2010, 12:46 AM
GearNut's Avatar
GearNut GearNut is offline
Motorized Bicycle Elite Member
 
Join Date: Aug 2009
Location: San Diego, Kaliforgnia
Posts: 5,074
Default Re: Gutting the muffler and headlight, tail lights..

It seems that everyone has different opinions or power enhancing experiences from removing the baffle out of the muffler.
The best outcome I could see from doing it is a teeny bit more power and a whole lot more loud noise.
These bikes are having a hard enough time getting legal or staying legal in many states.
Do you believe that having a really loud one running around your neighborhood will make your neighbors approve of them and be supportive of making/ keeping them legal? Or do you believe that they would see them as a loud, obnoxious, dangerous toy that should be banned from the streets?
__________________
The_Aleman:
"It's a chinagirl. It's a sometimes fun little engine that often will break your heart. It's disposable.

Does not come with a fortune cookie."
________________________
ROTFLMAO!!!!!!
Reply With Quote
  #6  
Old 05-30-2010, 12:16 PM
jrol22's Avatar
jrol22 jrol22 is offline
Motorized Bicycle Senior Member
 
Join Date: Mar 2010
Location: IL
Posts: 84
Default Re: Gutting the muffler and headlight, tail lights..

Thanks for all the information and advice. I really appreciate it. The kid runs his bike by my work place once in a while and it rlly doesn't sound much louder. Imma figure something out. Ill problable gut it and ad some extra muffler tubing and place a universal muffler on the end. Ill see how it goes. Thanks again.

And as for the headlight I'm just gonna run the headlight with the engine and a switch so it wnt b on when I dnt need it.

And as for my neighbors, they ALL love the bike. They think its great and looks like fun. Haven't had a
Single complaint from any of em.
Reply With Quote
  #7  
Old 06-03-2010, 01:11 AM
jrol22's Avatar
jrol22 jrol22 is offline
Motorized Bicycle Senior Member
 
Join Date: Mar 2010
Location: IL
Posts: 84
Default Re: Gutting the muffler and headlight, tail lights..

Bairdco, where did you find the muffler at? I'm thinking of just gettin a muffler from a briggs and stratton at my local ace or menards...which ever one has it for cheap.
Reply With Quote
  #8  
Old 06-03-2010, 01:23 PM
moronic_kaos's Avatar
moronic_kaos moronic_kaos is offline
Motorized Bicycle Elite Member
 
Join Date: Apr 2010
Location: Connecticut
Posts: 224
Default Re: Gutting the muffler and headlight, tail lights..

Quote:
Originally Posted by GearNut View Post
It seems that everyone has different opinions or power enhancing experiences from removing the baffle out of the muffler.
The best outcome I could see from doing it is a teeny bit more power and a whole lot more loud noise.
These bikes are having a hard enough time getting legal or staying legal in many states.
Do you believe that having a really loud one running around your neighborhood will make your neighbors approve of them and be supportive of making/ keeping them legal? Or do you believe that they would see them as a loud, obnoxious, dangerous toy that should be banned from the streets?
Removing it + removing the air filter allowed me to race a 48cc against a 66cc bike uphill (lost, but only by about 2 bike lengths on ~1/4 mile hill). The 48 was a year old (and badly maintained by the previous owner) and the 66 only had about 500 or so miles.

Though most 2-strokes seem to need a sufficient amount of back pressure, these don't seem to want it. That stupid loud black exhaust with the missing internals I've got seems to wake up whatever motor I put it on.

What would be a really nice thing to see would be a spring-loaded cap (with attached guts) hooked up to a steel cable and shift lever on the bars. Would be well worth the effort. Cruise the neighborhoods quiet-like but power down mainstreet and those middle-of-nowhere back roads.
Reply With Quote
  #9  
Old 06-03-2010, 05:19 PM
GearNut's Avatar
GearNut GearNut is offline
Motorized Bicycle Elite Member
 
Join Date: Aug 2009
Location: San Diego, Kaliforgnia
Posts: 5,074
Default Re: Gutting the muffler and headlight, tail lights..

Haha! Are you familiar with lakes pipes?
They are basically an exhaust with dual outlets. One goes to a muffler, for daily driving, and the other is just a straight pipe outlet. They use a plate that bolts over the straight outlet (dump) to block it off.
__________________
The_Aleman:
"It's a chinagirl. It's a sometimes fun little engine that often will break your heart. It's disposable.

Does not come with a fortune cookie."
________________________
ROTFLMAO!!!!!!

Last edited by GearNut; 06-03-2010 at 05:36 PM.
Reply With Quote
  #10  
Old 06-03-2010, 06:14 PM
bairdco's Avatar
bairdco bairdco is offline
a guy who makes cool bikes
 
Join Date: Aug 2009
Location: living the dream in southern california
Posts: 5,941
Default Re: Gutting the muffler and headlight, tail lights..

i got it from Summit Racing on Ebay. it's a Universal Muffler that attaches with a hose clamp. it comes with 12 silencing discs but that's for cars. i found it works best (for me) with only three discs.
Reply With Quote
Reply

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 07:22 PM.


Sponsors

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
MotorBicycling.com