Clutch idea... Will it work? - Pocket Bike Forum - Mini Bikes
 
LinkBack Thread Tools
post #1 of 8 (permalink) Old 1 Week Ago Thread Starter
verified
 
Join Date: Mar 2017
Posts: 22
Clutch idea... Will it work?

So I have been researching which quality three shoe clutch to get along with lighter springs. After reading some people's post about having the adjustment turned all the way out and still engaging too early..... So it dawned on me I wonder if adding weight to the back of each one of the three shoes would work allowing you to keep the stock clutch setup and have a more adjustable range....Follow me?
sventek is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 1 Week Ago
EPR
Outlaw
 
EPR's Avatar
 
Join Date: Aug 2009
Posts: 21,863
Re: Clutch idea... Will it work?

Need a lot more info to answer your question. What engine, what clutch, what springs?? The mini moto racers weight there clutch arms so they engage earlier, for minor adjustments. But there are 3 levels of springs also. For water cooled 13,000 RPM engines the BZM 2 or 3 shoe racing clutches are the best for $175. 2 strokes have no low engine power like a 4 stroke Honda, so if you want more take off power, and depending on your engines top RPMs you want stronger springs and or lightened and balanced clutch arms 6,000 to 8500 RPMs engage speed like my C1. For a Cag you might want one of these newer style clutches, w/ knotch for crank key, the last photo.
Attached Images
File Type: jpg 100_0582.JPG (506.7 KB, 10 views)
File Type: jpg 100_0026.JPG (511.6 KB, 8 views)
File Type: jpg 100_0561.JPG (368.3 KB, 8 views)
File Type: jpg 100_0562.JPG (385.5 KB, 8 views)
File Type: jpg HP Cag Clutch New.jpg (15.9 KB, 9 views)

Empty Pockets Racing: The difficult we do, the impossible takes longer.....
EPR is offline  
post #3 of 8 (permalink) Old 1 Week Ago Thread Starter
verified
 
Join Date: Mar 2017
Posts: 22
Hey thanks. So I'm a noob somewhat to the scene but not wrenching...My bad?
Anyhow I didn't know if there were other spring weights available. I have no idea the wait of the springs that were on the bikes I received. I have three running total of the blata B1 reps and I will attach a picture of the clutch that is on all three. Right now I wanted to engage a lower RPM as its rapping out pretty high before it really grabs I believe well into the Power Band but I have the adjustment screws loose and all the way up as much as possible with no luck. Going to install tach soon
Attached Images
File Type: jpg 14924793070191547411038_1492479338393.jpg (478.2 KB, 10 views)
sventek is offline  
Sponsored Links
Advertisement
 
post #4 of 8 (permalink) Old 1 Week Ago
EPR
Outlaw
 
EPR's Avatar
 
Join Date: Aug 2009
Posts: 21,863
Re: Clutch idea... Will it work?

I have 2 C1 Blata clones and enough parts to totally rebuild both including 2 new cranks. My water cooled 50cc & 39cc air cooled has that same clutch. That is the standard 3 shoe B1/ C1 clutch, I have a few extra new clutches here. Don't know of any different springs for that clutch. Standard engage speed for a C1 is 8,500 RPMs If you want a lower speed, drill and tap M4 threads in each clutch arm, out near the end where you have room and put a short M4 steel allen head bolt in each one, if one is not enough put 2 in each arm, does not take a lot, just a few grams can make a big difference. That makes the arms heavier and easier for them to hit the bell sooner.
Attached Images
File Type: jpg 40cc Air Cooled C1 Blata Clone1.jpg (455.8 KB, 5 views)
File Type: jpg 40cc Air Cooled C1 Blata Clone2.jpg (477.4 KB, 6 views)
File Type: jpg 100_0003.JPG (475.5 KB, 5 views)
File Type: jpg 100_0005.JPG (491.4 KB, 5 views)
File Type: jpg 100_0009.JPG (494.5 KB, 5 views)

Empty Pockets Racing: The difficult we do, the impossible takes longer.....

Last edited by EPR; 1 Week Ago at 02:49 PM.
EPR is offline  
post #5 of 8 (permalink) Old 1 Week Ago
PBP RACER
 
Join Date: May 2011
Posts: 81
Re: Clutch idea... Will it work?

those stock clutches are crap on the Chinese C1's.

invest in a oldschool polini style 2 shoe clutch.. which BZM, CS, Zocchi also manufacture the same style which they all have interchangeable parts. you won't have any problems with those

the stock clutch you have suffers from having light clutch shoes and very heavy springs causing them to be impossible to engage low end. its not even worth the trouble to find springs that'll work for the clutch as the pads are also crap.
jozy is offline  
post #6 of 8 (permalink) Old 6 Days Ago
EPR
Outlaw
 
EPR's Avatar
 
Join Date: Aug 2009
Posts: 21,863
Re: Clutch idea... Will it work?

Yeah, the C1 clutches are crap, but, I get them for $13 ea. shipped direct from China, compared to a BZM $175, I can buy 13 clutches for that price. Takes 5 minutes to replace and you have a new clutch. I melted the glue on one C1 pad and the whole pad came off and wedged in between the bell, I thought a blew the engine it made so much noise. It helps to bake the new clutch at around 350 degrees F. before use, helps cure the bonding agent. If you are slick you can grind one end of the springs down to make them shorter.

Empty Pockets Racing: The difficult we do, the impossible takes longer.....
EPR is offline  
post #7 of 8 (permalink) Old 5 Days Ago Thread Starter
verified
 
Join Date: Mar 2017
Posts: 22
Thanks man...Cool, I'll try the tap... Or just use some sticky wheel weights
sventek is offline  
post #8 of 8 (permalink) Old 4 Days Ago
EPR
Outlaw
 
EPR's Avatar
 
Join Date: Aug 2009
Posts: 21,863
Re: Clutch idea... Will it work?

I would not use weights, if they get flung off going to ruin your clutch. Go look at my new thread Corroded C1 Clutch.

Empty Pockets Racing: The difficult we do, the impossible takes longer.....
EPR is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pocket Bike Forum - Mini Bikes forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may 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

 
For the best viewing experience please update your browser to Google Chrome