General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

SHAFT-DRIVE A2 Desighn project

Old 12-01-05, 08:37 AM
  #1  
swtpn&dtrmntn
Newbie
Thread Starter
 
Join Date: Dec 2005
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
SHAFT-DRIVE A2 Desighn project

hey guys, ok, for my a2 d.t project im creating the shaft drive mechanism for a shaft driven bicycle. basically, im building from scratch.

The bevel gearing system is all easy enough, im buying them in, turning down shaft ect.

However, i will only be using a vacuum formed casing for this. so my problem being i need a way of attaching the shaft to the frame itself. All of the ones ive seen are one whole unit. therefore just attach on, but as mine will be attachable to any standart chaindrive mountain bike as a modifaction, i need a way of holding this shaft in place!

Can anyone please help me on this? ive googled but not had much luck, also, if any of you have a shaft drive mountain bike, pictures would be greatly appreciated. or any other info!!!

cheers
steve
swtpn&dtrmntn is offline  
Old 12-01-05, 12:11 PM
  #2  
huhenio
Barbieri Telefonico
 
huhenio's Avatar
 
Join Date: Aug 2005
Location: Albuquerque, New Mexico
Posts: 3,522

Bikes: Crappy but operational secondhand Motobecane Messenger

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
To any existing chaindrive?

... a solution to a problem that does not exist.

Chainstays ...
__________________
Giving Haircuts Over The Phone
huhenio is offline  
Old 12-01-05, 02:51 PM
  #3  
swtpn&dtrmntn
Newbie
Thread Starter
 
Join Date: Dec 2005
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Yes, as a conversion.

But if you are not willing to help then F--- it.
why did you even bother to reply.
swtpn&dtrmntn is offline  
Old 12-01-05, 02:58 PM
  #4  
2manybikes
Dog is my co-pilot
 
2manybikes's Avatar
 
Join Date: Jun 2003
Posts: 17,531

Bikes: 2 many

Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 989 Post(s)
Liked 12 Times in 10 Posts
You can buy retrofit shaft drives for bikes now. The ones offered have to be used with an internally geared hub to have gears. The single speed shaft drive was offered about the late 1800's, I think that was built as one of the chain stays. maybe you can find one (a photo) for a guide. This comes up often on the forums, search the forums and you can find some photos, I think I posted some not to long ago.

all I did was google "shaft drive bicycle"

http://www.sussex.com.tw/se2.htm

These guys offer a recumbent shaft drive too!
Attached Images
File Type: jpg
p2.jpg (12.0 KB, 27 views)
File Type: jpg
sx006s1.jpg (22.7 KB, 29 views)
File Type: jpg
sx007-s.jpg (24.7 KB, 26 views)
File Type: jpg
SDTS-o.jpg (53.6 KB, 24 views)

Last edited by 2manybikes; 12-01-05 at 03:14 PM.
2manybikes is offline  
Old 12-02-05, 09:39 AM
  #5  
eubi
No Rocket Surgeon
 
eubi's Avatar
 
Join Date: Jan 2005
Location: Corona and S. El Monte, CA
Posts: 1,648

Bikes: Cannondale D600, Dahon Speed T7

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
That's neat stuff, but I think the OP wants to design one from scratch, right?

Try these guys, they invented the flexible shaft:

http://www.sswt.com/sswt/flex.html

You could probably make this work with any rear suspension scheme (but what do I know, I ride a hard tail!).

This shaft could be attached at multiple points along the chainstay.

Is this for an engineering class? Good luck on your project.
__________________
Fewer Cars, more handlebars!
eubi is offline  
Old 12-02-05, 03:39 PM
  #6  
swtpn&dtrmntn
Newbie
Thread Starter
 
Join Date: Dec 2005
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Brilliant guys, thanks alot,

yeah its for a design technology project.

Im thinking of sticking to bevel gearing on side, and i mite even try using a work geam gear for the other....

Anyways i will be producing it aswell as designing it. It might not be perfect!...

But ill post some pictures of it and stuff when its all finished.

Steve
swtpn&dtrmntn is offline  
Old 12-02-05, 04:59 PM
  #7  
Treespeed
Warning:Mild Peril
 
Treespeed's Avatar
 
Join Date: Jan 2005
Location: Seattle Refugee in Los Angeles
Posts: 3,171

Bikes: Cilo, Surly Pacer, Kona Fire Mountain w/Bob Trailer, Scattante

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
You might want to check out the alternative thread. Those guys are the ones for a project like this.
__________________
Non semper erit aestas.
Treespeed is offline  
Old 12-04-05, 11:34 AM
  #8  
eubi
No Rocket Surgeon
 
eubi's Avatar
 
Join Date: Jan 2005
Location: Corona and S. El Monte, CA
Posts: 1,648

Bikes: Cannondale D600, Dahon Speed T7

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Be careful using a worm gear. You will get a very high reduction ratio, and you have to be careful you don't try to back-drive it.
__________________
Fewer Cars, more handlebars!
eubi is offline  
Old 12-05-05, 05:17 AM
  #9  
MichaelW
Senior Member
 
Join Date: Feb 2001
Location: England
Posts: 12,952
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
You may want to experiment with a ****-stay design, putting all the frame material onto the drive side of the bike using a stub axle. This will allow you to change tyre without removing the wheel and disengaging the drive.
MichaelW is offline  

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.