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
  #21  
Old 08-17-2009, 05:54 PM
Goat Herder's Avatar
Goat Herder Goat Herder is offline
Gutter Rider
 
Join Date: Apr 2008
Location: N.M.
Posts: 6,251
Default re: Motorized Bicycle Gear Calculator

Quote:
Originally Posted by Dan View Post
Very cool and thanks for sharing Coval.

I associated this with MSW infopath 2003 and won't work. Any one know how I can get it to open in another program?
download: OpenOffice.org Downloads Some where in this sight I believe. I use linux Ubuntu 904 right now. So I don't know how or where for windows really. Try this page! download: Instructions for Downloading and Installing OpenOffice.org 3.0
__________________
Still gotta have a since of humor.
Reply With Quote
  #22  
Old 08-17-2009, 06:41 PM
Dan's Avatar
Dan Dan is offline
Staff
 
Join Date: May 2008
Location: Moosylvania
Posts: 11,850
Default re: Motorized Bicycle Gear Calculator

Thanks GH! I am going to try and trash infopath and see if it will ask me what to open with.

Can't we all just get along!? LOL, talking to my programs
__________________
worst apocalypse ever
=============================

http://www.youtube.com/watch?v=y6Sxv-sUYtM
Reply With Quote
  #23  
Old 08-19-2009, 03:04 AM
Coval_PL's Avatar
Coval_PL Coval_PL is offline
Motorized Bicycle Senior Member
 
Join Date: Jul 2009
Location: Gdynia/Poland
Posts: 57
Default re: Motorized Bicycle Gear Calculator

Here's another zip with two files inside. One for Open Office and one for MS Excel. I hope it'll be easier for everybody
Attached Files
File Type: zip gear-calculator_by_Coval_PL.zip (21.7 KB, 170 views)
__________________
MTB Author Mystic Shock with Skyhawk GT5 80cc onboard....

See my MopedShow :-)

Last edited by Coval_PL; 08-30-2009 at 06:28 PM. Reason: I found mistake in calculations and replaced files.
Reply With Quote
  #24  
Old 08-19-2009, 10:51 PM
Dan's Avatar
Dan Dan is offline
Staff
 
Join Date: May 2008
Location: Moosylvania
Posts: 11,850
Default re: Motorized Bicycle Gear Calculator

Wow, thanks Coval. Working on a thing and this is gonna help big time.
__________________
worst apocalypse ever
=============================

http://www.youtube.com/watch?v=y6Sxv-sUYtM
Reply With Quote
  #25  
Old 09-18-2009, 09:04 PM
diceman2004's Avatar
diceman2004 diceman2004 is offline
Motorized Bicycle Elite Member
 
Join Date: Aug 2009
Location: Kitchener , Ontario
Posts: 568
Default re: Motorized Bicycle Gear Calculator

mph works ok . i run 16-1 ratio .
in the RATIO section i only enter 16
don,t try 16-1
Reply With Quote
  #26  
Old 12-14-2009, 12:29 PM
thefruitgnome thefruitgnome is offline
Motorized Bicycle Newbie
 
Join Date: Dec 2008
Location: UK
Posts: 14
Default re: Motorized Bicycle Gear Calculator

Quote:
Originally Posted by reg454 View Post
This is a great way to see "how fast" someone could relatively go on a motor bike at a certain rpm. I used it with a 26" rim 11tooth drive sprocket, 36tooth rear sprocket, and an rpm of 2200. It gave me the speed of 52mph. But somehow this does not seem right.
think its because its not taking air resistance or weight into account.
Reply With Quote
  #27  
Old 12-14-2009, 08:21 PM
ducatiluke ducatiluke is offline
Motorized Bicycle Member
 
Join Date: Jan 2009
Location: los angeles/ south australia
Posts: 39
Default re: Motorized Bicycle Gear Calculator

no thats not right

firstly
is the 11 tooth pully or sprocket mounted on the engine crankshaft or a gearbox?

if its a chinese 2 stroke motorized kit it uses a geabox so you will have to remove the gearbox cover and count all the teeth involved

i believe its somthing like 20 teeth on the crankshaft
then 90 on the clutch
Reply With Quote
  #28  
Old 12-02-2010, 11:08 AM
atombikes atombikes is offline
Motorized Bicycle Elite Member
 
Join Date: Feb 2010
Location: Northern VA
Posts: 525
Default Re: Motorized Bicycle Gear Calculator

Ahhh! What am I doing wrong? I am trying to calculate final drive for a mid-drive (jackshaft) setup, to select the best gears on the clutch, jackshaft and rear wheel.

The problem is (and I obviously must be doing some wrong) that for instance, if I change the gears on the jackshaft around (i.e the input is a 13 tooth, output is a 18 tooth; then swap them round to a 18 input, 13 output) the resultant speed remains the same! Its like I can't affect the final drive ratio at all?? WTH?
Reply With Quote
  #29  
Old 12-02-2010, 11:38 AM
Felton Felton is offline
Motorized Bicycle Senior Member
 
Join Date: Dec 2009
Location: GA
Posts: 92
Default Re: Motorized Bicycle Gear Calculator

One ratio would be 18/13 or 1.385/1 and the other would be 13/18 and would be .722/1
__________________

Last edited by Felton; 12-02-2010 at 12:30 PM.
Reply With Quote
  #30  
Old 12-02-2010, 12:04 PM
atombikes atombikes is offline
Motorized Bicycle Elite Member
 
Join Date: Feb 2010
Location: Northern VA
Posts: 525
Default Re: Motorized Bicycle Gear Calculator

Quote:
Originally Posted by Felton View Post
One ration would be 18/13 or 1.385/1 and the other would be 13/18 and would be .722/1
Right, this makes sense. I think my problem is how I am inputting the jackshaft into the calculator.
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 02:08 PM.


Sponsors

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