Go Back   DIY Go Kart Forum > Announcements & Suggestions > FAQ & Articles

Notices

Closed Thread
 
Thread Tools Display Modes
  #21  
Old 05-17-2013, 06:29 PM
OzFab's Avatar
OzFab OzFab is offline
Senior Member
 
Join Date: Nov 2011
Location: Warwick Qld, Australia
Posts: 15,619
Thanks: 1,135
Thanked 3,397 Times in 2,676 Posts
Default

Umm, no, you're not in the right place; start a new thread here
__________________
2013 Build-off Winner - http://www.diygokarts.com/vb/showthread.php?t=21076
  #22  
Old 05-18-2013, 08:54 AM
smu1290 smu1290 is offline
Junior Member
 
Join Date: May 2013
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Okay posted in the clutch area, thank for the guidence.
  #23  
Old 09-25-2013, 07:25 PM
sparkythex sparkythex is offline
Junior Member
 
Join Date: Sep 2013
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Default Can a Centrifugal Clutch work with a standard transmission?

Hello I want to check if my understanding is correct.

Letís assume my gear ratio is correct between Centrifugal clutch & transmission & wheels. (I haven't figured it out but letís just say I have, to keep it simple.)

Here is list of what is connected & in place:
  • So i have the engine with a Centrifugal Clutch.
  • I then have attached to the clutch a 2 speed transmission. (or more gears, I just found one that was a 2 speed.) connected to my clutch by chain or belt or something.

Quote:
Research From http://blog.kartbuilding.net/2007/06...d-chain-drive/.



If the engine is turning over very slowly, then the centrifugal clutch is disengaged, and the kart comes to a stop. If the engine speeds up (increase Revs Per Minute rpm) then the automatic clutch will engage, and the kart will move forward.
So here is how it should work :
  1. I am not moving, not hitting gas pedal; engine is idling, clutch is doing nothing.
  2. I shift in to low gear i.e. first gear. (I remember this by LOW rhymes with SLOW & should be my largest gear.)
  3. When I hit the gas pedal ; i.e. engine throttle on the engine it should increase rpm & engage clutch thus I should start to move.
  4. At top speed for low gear (for fun letís say 10mph) I want to shift gears.
  5. I let off the gas this should decrease rpm & disengage my Centrifugal clutch.
  6. Thus I can now shift in to 2nd gear (i.e. high gear.)
  7. Then I can press gas rpm increase & engage clutch
  8. repeat as necessary if I have more higher gears (yes sample only shows 2 but Iwill probably have a 4-5 speed.)

Then I should be able to brake to slow enough to not damage anything to go down a gear in to 1st.

Or stop altogether , just make sure to down shift before applying gas again.

Is that the correct theory?
  #24  
Old 09-25-2013, 09:57 PM
OzFab's Avatar
OzFab OzFab is offline
Senior Member
 
Join Date: Nov 2011
Location: Warwick Qld, Australia
Posts: 15,619
Thanks: 1,135
Thanked 3,397 Times in 2,676 Posts
Default

Quote:
Originally Posted by sparkythex View Post
Is that the correct theory?
No because a standard cent clutch won't disengage until the engine is below engagement speed; by that time you'll be moving too slow for 2nd gear. To have any chance of success you'll need a clutch with a high speed engagement...

P.S. Maybe you should've started a new thread for this...
__________________
2013 Build-off Winner - http://www.diygokarts.com/vb/showthread.php?t=21076
  #25  
Old 10-27-2013, 06:14 PM
kartsandatvs kartsandatvs is offline
Junior Member
 
Join Date: Oct 2013
Location: San Antonio, TX , USA
Posts: 13
Thanks: 17
Thanked 0 Times in 0 Posts
Default

Hello forum, i am a newbie, have had experience with track karts using the 160gx 5.5 hp honda engine with a 4 to 1 relation which is really an 8 to 1 because of the wet clutch (2 to 1 relation ), I am now installing a clone 6.5 hp harbor freight engine on an old 3 wheeler, using a jacksaft to obtain a 10 to 1 relation and also because the kawasaki 3 wheeler uses #520 chain and the clutch uses #40 chain, my question would be what do you think of a 10 to 1 relation with 18 inch diameter rear tires and also what 3/4 centrifual clutch would you advise me to get good price and good working clutch, I know 3 wheelers are very instable so its mainly torque and not speed I am looking for I think, thanks
  #26  
Old 10-27-2013, 08:14 PM
OzFab's Avatar
OzFab OzFab is offline
Senior Member
 
Join Date: Nov 2011
Location: Warwick Qld, Australia
Posts: 15,619
Thanks: 1,135
Thanked 3,397 Times in 2,676 Posts
Default

All good questions but, it doesn't really fit with this thread. Please start a new thread, you'll get more response that way...
__________________
2013 Build-off Winner - http://www.diygokarts.com/vb/showthread.php?t=21076
  #27  
Old 08-11-2014, 02:07 PM
Troubled1 Troubled1 is offline
Junior Member
 
Join Date: Aug 2014
Location: Somerset NJ
Posts: 17
Thanks: 0
Thanked 1 Time in 1 Post
Default

Thanks for this great info. Working on parts list to order and after reading this I'm confident CC is more suitable. Now to read up on Gear Ratios. lol Thanks
  #28  
Old 08-15-2014, 11:03 AM
karting_krazy karting_krazy is offline
Junior Member
 
Join Date: Aug 2014
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Default

If you have not checked out the DBRC its the best there is. Its a manual clutch for $175 and can handle up to 35hp. Its 3/4 in bore and comes with a cable and clutch lever. The thing looks awesome I cant wait to buy one and test it out for myself. http://www.downsbrosracing.com/
  #29  
Old 08-15-2014, 06:20 PM
OzFab's Avatar
OzFab OzFab is offline
Senior Member
 
Join Date: Nov 2011
Location: Warwick Qld, Australia
Posts: 15,619
Thanks: 1,135
Thanked 3,397 Times in 2,676 Posts
Default

You mean this one?
__________________
2013 Build-off Winner - http://www.diygokarts.com/vb/showthread.php?t=21076
Closed Thread

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 -6. The time now is 02:09 AM.