Club Chopper Forums ychrome  

Go Back   Club Chopper Forums > CHOPPER SHOP/TECH AREA > Shop Talk

Welcome to Club Chopper!  The World's largest and coolest place to be on the net if you dig the following!

  •  » Custom Bikes
  •  » Killer Paint
  •  » Old School Craftsmanship
  •  » Building and Wrenching
  •  » Hot Babes
  •  » Chopper Build Logs

...then you have come to the right place!

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

Chopper Tech
Tech Article
Tech Article
Tech Article
Tech Article
Tech Article
Main Menu
Module Jump:
Club Chop Gallery

Club Chopper Gallery

Submit Your Photos!

Active Threads
"Not the Normal" builds, from WCC
Last Post: SKT
Posted On: Today
Replies: 17,826
Views: 3,407,186
Shovel O Shit
Last Post: 300newbie
Posted On: Today
Replies: 79
Views: 3,601
New HOUSE key skulls
Last Post: Midwest Cycle
Posted On: Today
Replies: 0
Views: 15
what is this
Last Post: Tortolabob2
Posted On: Today
Replies: 4
Views: 137
Super clean 200 Dominator for sale
Last Post: 250CFL
Posted On: Yesterday
Replies: 48
Views: 4,836
More...
  #1 (permalink)  
Old 07-27-2008, 10:01 AM
RayBan's Avatar
Club Chopper Member
Visit my Photo Gallery
 
Join Date: May 2004
Location: Independence, MO
Bike Year, Make, Engine: 04 Venom Prostreet
Posts: 235
Not Ranked     
BDL clutch adjustment

I have the 3" BDL primary, the problem I'm havng is at slow/idle speeds. The bike tends to jerk or buck at low speeds in traffic. I don't have any problems shifting up or down or finding neutral, that all seems to work great. Is this normal for this clutch or do I need further adjustments on the pushrod? I adjusted it according to the BDL specs turn pushrod in until you feel resistence then back it out 1/4 turn.
Reply With Quote
Sponsored Links
  #2 (permalink)  
Old 07-27-2008, 10:14 AM
MechWerks's Avatar
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Oct 2004
Location: South Sioux City, NE
Posts: 3,408
Not Ranked     
When you pull the clutch handle, is there a slight movment before hitting resistance?

Doesn't really sound like the clutch is having an issue unless you can feel it slipping (then something in cable or pushrod is too tight causing the clutch to slip). Are you lugging the engine at low speeds? Belt drives don't have compensators for the low speed two cylinder engine...just direct drive. Loading on the engine the wrong way will cause immediate jerking until speed increases enough for the engine to run properly.
__________________
MechWerks
www.mechwerks.com parts and supplies for professional and enthusiast bike builders
Reply With Quote
  #3 (permalink)  
Old 07-27-2008, 10:22 AM
Ricky-D's Avatar
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Jan 2007
Location: W.Columbia, SC
Posts: 2,997
Not Ranked     
That's what it sounds like to me also MW. Lugging at low speed even in 1st gear is always present. You have to keep feathering the clutch to avoid the problem!

Maybe there will be an automatic transmission developed soon to address the issue. With the advent of astronomical gasoline prices there certainly will be a need for such a transmission for all the newly entering motorcycle riders that are trying to avoid the expense of running their Hummers.

***
Reply With Quote
  #4 (permalink)  
Old 07-27-2008, 11:19 AM
RayBan's Avatar
Club Chopper Member
Visit my Photo Gallery
 
Join Date: May 2004
Location: Independence, MO
Bike Year, Make, Engine: 04 Venom Prostreet
Posts: 235
Not Ranked     
Kind of what I thought. Not lugging the engine at all just noticeable in rush hour traffic when moving at idle speed. Feathering the clutch is what I usually do to correct it.

Thanks for the help
Reply With Quote
Sponsored Links
  #5 (permalink)  
Old 07-27-2008, 12:49 PM
Merlin Hawaii's Avatar
DON'T WORRY - BE HAPPY
Visit my Photo Gallery
 
Join Date: Jan 2006
Location: Shangri-La, Hi
Posts: 5,180
Not Ranked     
The compounds used on the friction plates have a big effect on the grip and it's user friendliness on the street

Stock BDL frictions are an organic/kevlar blend, that should be easy to feather

Carbon/Kevar blends, and Carbon/Ceramic blends give better bite for high HP applications, but the engagement is more abrupt

I try to feather the clutch as little as possible.

The engagement might be a little more abrupt, but the frictions and steels will last longer
Reply With Quote
  #6 (permalink)  
Old 07-27-2008, 06:27 PM
Robocop's Avatar
CC Member/Contributor
Visit my Photo Gallery
 
Join Date: Nov 2007
Location: Miami, fl
Posts: 164
Not Ranked     
I get the same problem when the bike is hot. When I'm sitting on a light the bike tends to jerk forward. A lot of people I talk to say is normal. Sometimes, it even make a clunk noise coming out of the clutch basket.
Reply With Quote
  #7 (permalink)  
Old 07-27-2008, 08:17 PM
Krayzee's Avatar
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Oct 2005
Location: nice place, nv
Bike Year, Make, Engine: 06 Xtreme Cycle Design frame, TP121
Posts: 58
Not Ranked     
are you using hydraulic or cable lines? I had the same problem using hydraulic lines. Took me awhile to find the problem, can't tell you how many times i stopped and made an adjustment on that rod setting. ended up being an adjust needed at the handle/lever. It was like is was not pushing enough fluid to fully seperate the plates. Good luck.
Reply With Quote
  #8 (permalink)  
Old 07-28-2008, 07:56 AM
Ricky-D's Avatar
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Jan 2007
Location: W.Columbia, SC
Posts: 2,997
Not Ranked     
Probably, the most common culprit when having clutch (dragging related) problems in hydraulic clutch systems is air in the lines.

Even the tiniest amount of air in a hydraulic clutch system will limit travel of the slave.

The slave has such a short travel designed into it and coupled with a master cylinder designed with a small piston (intentionally so) well,,,

Just a few tiny specks of bubbles can have a immense effect on clutch operation.

Bleed that system.

***
Reply With Quote
  #9 (permalink)  
Old 07-28-2008, 08:04 AM
MechWerks's Avatar
Club Chopper Member
Visit my Photo Gallery
 
Join Date: Oct 2004
Location: South Sioux City, NE
Posts: 3,408
Not Ranked     
Usually parts grow with heat and that usually results in slipping. Grabbing at the stoplight is failure to disengage which is an opposite to slipping. Hydraulic systems are especially picky as air in the line is very difficult to remove and the smallest bubble of air in the system can be compressed and remove precious volume from providing adequate clutch throw.

On the other hand, the BDL drive is fairly crude and sometimes plates stick and plates smacking against dogs in the basket make noise. Getting a dry clutch wet causes rust (quickly..in minutes) and even humidity can rust highly polished metal plates making them stick to friction disc. All nature of the beast and typical to racing heritage parts. HD would have dropped their leaky and costly wet primary long ago if dry was better for street use.
__________________
MechWerks
www.mechwerks.com parts and supplies for professional and enthusiast bike builders
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
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -7. The time now is 11:23 AM.


vBulletin skins developed by: eXtremepixels
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.0

CC Policy

The representations expressed are the representations and opinions of the clubchopper.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners or moderators. clubchopper.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you or have been given the expressed written consent to post. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). For full policy, please click the "CC policy" link. Thank you for visiting the clubchopper.com
Links monetized by VigLink