Motorized Bicycle Engine Kit Forum  

Sponsors



Go Back   Motorized Bicycle Engine Kit Forum > Bicycle Motor > DIY Home Built Motorized Bicycle (non kit)

DIY Home Built Motorized Bicycle (non kit) Post all about your home built rides here. Weedwacker motors, lawn mower engines ect. This area is for non kit builds

Reply
 
Thread Tools Display Modes
  #1  
Old 03-16-2017, 03:29 PM
xXNightRiderXx xXNightRiderXx is offline
Motorized Bicycle Elite Member
 
Join Date: Jan 2017
Location: Las Vegas
Posts: 107
Default 670cc V-twin mini chopper beginning plans

The Night Prowler

Frame: custom made soft tail chopper bicycle with 7 speed freewheel, pneumatic shocks, and seat post suspension.

Brakes: 180mm shimano hydraulic disk

Engine: 20HP 670cc V-twin Predator

Gearing: pedals and crank arms removed; 38t square taper sprocket on the right, 20t Sq taper sprocket on the left; 38t sprocket is aligned with center of cassette, providing a total of 7 gears in this transmission

Clutch: still need to decide between a torque-a-verter or a centrifugal clutch direct drive. Suggestions?

Wheels:[front] 700x38c 36 spoke, cross three laced w/ schwalbe CX tire
[rear] 26x3.8 36 spoke, cross four laced, 6-10 speed freewheel and 7 speed cassette and surly black floyd 120tpi 26x 3.8 tire

Gas tank: 5gal top tube tank with three 5 gal reserve tanks

Handlebars: matte black swept with 2 inch rise

Underglow led color: what do Yall think would look more badass? Red, green, or blue?

Fork: 28 in. triple tree solid fork at 70 degrees

Bottom bracket: 230mm sealed bearing cartridge

Pegs will be 1 1/4 inch steel bar with grip spikes

Please take note that this will be my personal ride and will not make more to sell. I will build, for sale, no higher than the 420cc predator, for the daredevils and speed demons. Or even people who like risky machines... You never know.

I've decided that I will build these big bikes for sale, but they must be pre-ordered. The Night Prowler will likely cost me about $2000 total to build, and I charge $10/hr labor.

SAFETY WARNING: This bike will go a top speed of 140 with a 7 speed drivetrain! Please practice common sense and caution. Inspect the bike before and after every ride, fill up, and rest break. A crack may appear in the welds, or at the mounts. If this happens, please take a photo with the serial number and I will replace your frame or fork at no extra cost. Also, please choose a name for your chopper for easier identification and for awesomeness points!

Last edited by xXNightRiderXx; 03-21-2017 at 04:11 PM.
Reply With Quote
  #2  
Old 03-16-2017, 07:52 PM
Tony01's Avatar
Tony01 Tony01 is offline
Motorized Bicycle Elite Member
 
Join Date: Nov 2012
Location: San Jose, CA
Posts: 743
Default Re: 670cc V-twin mini chopper beginning plans

Sounds retarded to me. 650 and a 700c wheel? You're thinking about the led underglow already? LOL
__________________
I don't always listen to Alice in Chains..... but when I do, SO DO THE NEIGHBORS
MxTrq clutch tuning | msrfan 2spd | 212cc 2spd | 3.5hp 2spd | Thud 2spd | CVT tuning
Reply With Quote
  #3  
Old 03-16-2017, 08:43 PM
MotorBicycleRacing's Avatar
MotorBicycleRacing MotorBicycleRacing is offline
Motorized Bicycle Elite Member
 
Join Date: Jul 2010
Location: SoCal, Orange County.
Posts: 5,476
Default Re: 670cc V-twin mini chopper beginning plans

A V twin done right.
http://motorbicycling.com/showthread.php?t=32428

Four 5gal gas tanks????

I vote for Red, green, and blue LED's for that circus look!!!


Last edited by MotorBicycleRacing; 03-16-2017 at 08:46 PM.
Reply With Quote
  #4  
Old 03-17-2017, 11:55 AM
ultralight01's Avatar
ultralight01 ultralight01 is offline
Motorized Bicycle Elite Member
 
Join Date: Oct 2016
Location: Hood River, Oregon
Posts: 328
Default Re: 670cc V-twin mini chopper beginning plans

Dang, That's a good read and an awesome project.
"So after much back and forth about whether or not to use a Worksman frame I decided to build my own. "
Good luck, custom motorcycle builder! I'd love to see the mods you do to the Vtwin.
Reply With Quote
  #5  
Old 03-17-2017, 06:38 PM
xXNightRiderXx xXNightRiderXx is offline
Motorized Bicycle Elite Member
 
Join Date: Jan 2017
Location: Las Vegas
Posts: 107
Default Re: 670cc V-twin mini chopper beginning plans

Quote:
Originally Posted by Tony01 View Post
Sounds retarded to me. 650 and a 700c wheel? You're thinking about the led underglow already? LOL
only the front is a 700c, and that wil be a 700x38c with CX tires. the rear wheel wil be a 26x4.25 with all terrain tires.

yes, four gas tanks for a total of 20 gallons, but this is my roadster.

Last edited by xXNightRiderXx; 03-17-2017 at 06:42 PM.
Reply With Quote
  #6  
Old 03-17-2017, 09:23 PM
MotorBicycleRacing's Avatar
MotorBicycleRacing MotorBicycleRacing is offline
Motorized Bicycle Elite Member
 
Join Date: Jul 2010
Location: SoCal, Orange County.
Posts: 5,476
Default Re: 670cc V-twin mini chopper beginning plans

Quote:
Originally Posted by xXNightRiderXx View Post
only the front is a 700c, and that wil be a 700x38c with CX tires. the rear wheel wil be a 26x4.25 with all terrain tires.

yes, four gas tanks for a total of 20 gallons, but this is my roadster.
gas is ~ 6lbs per gallon so 20 gallons is 123lbs
How much dat little V Twin motor weigh?

20 gallons at 40 mpg is 800 miles. Do you have an 800 mile arse?

Four 5 gallon tanks would make one fugly bike but this bike is
never going to happen so why am I posting this?

Are you on drugs or did you start St Patty's day early?

seriously, this is an early April Fools joke, right?
Reply With Quote
  #7  
Old 03-18-2017, 12:29 PM
ultralight01's Avatar
ultralight01 ultralight01 is offline
Motorized Bicycle Elite Member
 
Join Date: Oct 2016
Location: Hood River, Oregon
Posts: 328
Default Re: 670cc V-twin mini chopper beginning plans

600cc motorcycles have one tank bruh.

Those tires will explode with that weight

You need motorcycle wheels and thus a motorcycle frame

I mean, that one build did it with spoked wheels but I would not trust them one bit.
Reply With Quote
  #8  
Old 03-19-2017, 02:09 AM
xXNightRiderXx xXNightRiderXx is offline
Motorized Bicycle Elite Member
 
Join Date: Jan 2017
Location: Las Vegas
Posts: 107
Default Re: 670cc V-twin mini chopper beginning plans

Quote:
Originally Posted by MotorBicycleRacing View Post
gas is ~ 6lbs per gallon so 20 gallons is 123lbs
How much dat little V Twin motor weigh?

20 gallons at 40 mpg is 800 miles. Do you have an 800 mile arse?

Four 5 gallon tanks would make one fugly bike but this bike is
never going to happen so why am I posting this?

Are you on drugs or did you start St Patty's day early?

seriously, this is an early April Fools joke, right?
No, this is NOT a joke. The engine weighs about 105 lbs, I weigh 120 at 5' 7", plus the fuel would make about 400 pounds, which is still half the weight of a normal motorcycle with that engine size. Also, did you not read the full plans? Soft tail with suspension seat post. I could ride thousands of miles on that bike.

Ultralight, most do. Not this one. Also, the 700x38c CX tire won't blow up from that weight unless I hit something with it. And certainly not a 26x4.25 tire. The spokes will be 12ga on the front, 10ga on the rear. Both will be 36 spoke wheels, but the rear will be laced cross four because it's more efficient and stronger. The front wheel will be laced cross three because it doesn't have to withstand as much stress.

I hope you guys think I'm an idiot for even THINKING about doing this insane stunt, but I looked for mini choppers with the 670cc, and none showed their blocks. I'm building the first of its kind here for all I know, and it will cruise, run, and sprint like it's full sized cousin. Sometimes, idiocy is the backbone of creation.
Reply With Quote
  #9  
Old 03-19-2017, 06:36 AM
5-7HEAVEN 5-7HEAVEN is offline
Motorized Bicycle Elite Member
 
Join Date: Aug 2008
Posts: 1,971
Default Re: 670cc V-twin mini chopper beginning plans

So basically you're building a small motorcycle(no pedals) with a large motorcycle engine?

Why do you need to carry 20 gallons of gas? Wouldn't a small motorcycle tank suffice?
Reply With Quote
  #10  
Old 03-19-2017, 10:43 AM
ultralight01's Avatar
ultralight01 ultralight01 is offline
Motorized Bicycle Elite Member
 
Join Date: Oct 2016
Location: Hood River, Oregon
Posts: 328
Default Re: 670cc V-twin mini chopper beginning plans

More power to ya. Oh wait, you won't need any more when you're finished.
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 02:45 AM.


Sponsors

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
MotorBicycling.com