Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Alt Bike Culture Chopped, dropped, stretched, lifted, and otherwise cut up and put back together. The art and science of choppers, cruisers, lowriders and the vast world of mutant bicycles.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 02-01-11, 10:42 AM   #1
Jrymanowski
Newbie
Thread Starter
 
Join Date: Feb 2011
Bikes:
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
School project need help with front end lefty hubs

Ok so i got this class where we build a car and see how many mpg we can get and i wanna put lefty hubs on the front with disc brakes. i just need to know what hubs i should use and what size is the axle. thanks-josh

-mostly need an axle size we pretty much have a machine shop so we can fabricate almost anything anything helps!
Jrymanowski is offline   Reply With Quote
Old 02-01-11, 01:11 PM   #2
Doug5150
Senior Member
 
Join Date: May 2005
Location: IL-USA
Bikes:
Posts: 1,659
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Jrymanowski View Post
Ok so i got this class where we build a car and see how many mpg we can get and i wanna put lefty hubs on the front with disc brakes. i just need to know what hubs i should use and what size is the axle. thanks-josh

-mostly need an axle size we pretty much have a machine shop so we can fabricate almost anything anything helps!
Lefty hubs are made specifically for the Lefty mono-fork. Or non-fork I guess. What's a fork with only one tine? A spear?

Easiest is to just go order one from a Cannondale dealer. $$$$ not cheap though.

------

The Lefty's are built tough enough for MTB riding, but do you really need that much strength?

One way people who build home-made tadpole trikes (two wheels in front) is they use a 20" BMX wheel and adjust the axle so it sticks all out of one side. You can do this because with those wheels, the axle is just a long piece of threaded rod. .....There's two different front BMX axles common--one is like 3/8" thick and the other is 9/16" or 5/8" maybe. If you get a BMX wheel with the thicker axle, it's strong enough to support a few dozen pounds that way. These wheels only cost $40 or so each, and it's complete, it's not just a hub. Putting brakes on the rear (non-turning) wheels is easier.

Because you have access to machine tools--if you really thought that you needed something stronger than a BMX wheel hub, then it would probably cheapest to just make your own front hubs.

Good luck.
Doug5150 is offline   Reply With Quote
Old 02-01-11, 01:18 PM   #3
Doug5150
Senior Member
 
Join Date: May 2005
Location: IL-USA
Bikes:
Posts: 1,659
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Also another free tip:

If you think that you will want suspension for this vehicle, forget about using MTB shocks entirely, because while they work very well, they are horribly overpriced. A single rear MTB shock from a decent company will cost $250-$300 or more.

Go look for the hydraulic minibike shocks online--12 inches long and cost around $40 each.
Doug5150 is offline   Reply With Quote
Old 02-02-11, 09:29 AM   #4
lz4005
coasterbrakelockup
 
lz4005's Avatar
 
Join Date: Nov 2004
Location: parts unknown
Bikes: surly steamroller w/coaster brake, electra single speed cruiser, specialized rockhopper commuter, no-name single speed folder, 700c ultimate wheel, 24" unicycle, specialized bmx lsd, single seat single speed huffy tandem, pink upsidedown parade bike
Posts: 825
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Aren't you supposed to figure things like this out yourself, instead of asking random people on the internet to do your homework for you?
lz4005 is offline   Reply With Quote
Old 02-02-11, 10:43 AM   #5
Flying Merkel
Senior Member
 
Flying Merkel's Avatar
 
Join Date: Mar 2008
Location: Costa Mesa CA
Bikes:
Posts: 2,639
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by lz4005 View Post
Aren't you supposed to figure things like this out yourself, instead of asking random people on the internet to do your homework for you?
No need to re-invent the wheel. Part of the learning process is to learn how to use the available resources.
Flying Merkel is offline   Reply With Quote
Old 02-02-11, 12:46 PM   #6
VT tallbike
Senior Member
 
VT tallbike's Avatar
 
Join Date: Nov 2007
Location: Quarantine
Bikes: fixed gear raleigh super record, Fixed gear tall bike, SS tall bike, Triple high tall bike, Trek 4500, Diamond back viper, trek 800/nishiki chopper bike, I think/hope thats all
Posts: 238
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Use an old rear wheel from a trike. Those are one sided hubs. A wheel chair wheel would probably also work.
VT tallbike is offline   Reply With Quote
Old 02-03-11, 01:32 PM   #7
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 18,086
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Wheel chair hubs .. want brakes? get in contact with a tadpole recumbent trike manufacturer

Such as GreenSpeed in Australia. buy parts they have modified for their products.
fietsbob is offline   Reply With Quote
Old 02-14-11, 06:18 AM   #8
mconlonx 
Nobody
 
mconlonx's Avatar
 
Join Date: Jun 2007
Bikes:
Posts: 7,031
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Sturmey Archer makes a couple of hubs that would work, except they come with drum brakes, not disc.
__________________
I know next to nothing. I am frequently wrong.
mconlonx is offline   Reply With Quote
Old 04-16-11, 02:25 AM   #9
alecw35
Senior Member
 
Join Date: Jun 2005
Location: Angus, Scotland
Bikes: Many
Posts: 401
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I think you will have problems using axles that are 3/8 or 10mm. better with 14mm axles. then on the end of the fork, weld a strong tube for it to go into. will be too much stress on a flat bit of metal, like regular forks use.
you can get bmx with 14mm axles and disc front brakes. I used to work in a Halfords bike shop in Scotland. They sold a X rated Snare, and an Apollo Mx20.3.
Ive seen a wheel chair in the junk yard. It had 24" mag wheels. the hubs were on a sort of bmx stem, that clamped round the frame tube. so easy to fit to something else. It didnt have brakes tho. I was going to get it. but I think 10 miles is a bit far to wheel it.

You could look up sites that are for Human powered vehicles, HPVs. As people build them out of bike parts. Atomic Zombie is a good one. Theyve got a website and youtube videos. You could see how people have made the front end on them
alecw35 is offline   Reply With Quote
Old 04-16-11, 03:07 AM   #10
gerald_g 
Senior Member
 
gerald_g's Avatar
 
Join Date: Sep 2008
Location: AB, Canada
Bikes: Trek 1220 - Araya R200 - Specialized StumpJumper
Posts: 374
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I think some trike builders are using these...

http://www.bitexhubs.com/2009/htm/hub-b-DH20M.htm
gerald_g is offline   Reply With Quote
Old 04-20-11, 10:19 AM   #11
kazpaacykel
Junior Member
 
kazpaacykel's Avatar
 
Join Date: Jan 2011
Location: Tempe, Arizona
Bikes: KHS Flite 100, refurbished Schwinn Varsity
Posts: 13
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Flying Merkel View Post
No need to re-invent the wheel. Part of the learning process is to learn how to use the available resources.
Precisely. Forums are for asking questions just as much as sharing information. If you aren't here to help and to learn, then you probably shouldn't be here.
kazpaacykel is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 -6. The time now is 01:52 PM.