We discuss how a basic Motorcycle clutch is assembled and how it operates.  This is the first article before discussing Slipper Clutches

I was recently asked about Slipper clutches, or back torque limiting clutches to be exact.  The person asking was pondering the best location for his limited budget and trying to decide whether a slipper clutch was a good addition.  He then proceeded to ask me what a slipper clutch was and how did it work…

Lets look at a quick explanation of how a typical motorcycle clutch operates, whether it resides in a motocross bike, a cruiser, or a sport bike, they are mostly all the same.  The clutch resides under your right hand side engine cover, located on your transmission’s input shaft and divided up into roughly 5 different pieces.  The first, largest and most complex piece of the clutch puzzle is your outer clutch basket, it looks like the bottom of a huge soup can 3-5” in diameter and about 2-3” high with the upright edge of the can cast into 10 or so fingers.  The outer clutch basket is a mix of aluminum around the fingers, which is lightly riveted to the bottom section, which is steel.  This steel portion is allowed to twist about 5 degrees either way from the aluminum portion to take up driveline shock.  If you lay the basket fingers down on a workbench, you can see how the two halves are allowed to twist in the rivets, compressing springs either way.  There are usually 6 springs, three to take positive engine pulses (they may be slightly heavier springs) and three to take deceleration pulses.  While the clutch is in this position, you will notice that the very inside of the basket where it slides onto the transmission’s input shaft is perfectly smooth with maybe some slight grooves to allow for oil flow.  This is an important observation because this basket doesn’t turn the transmission shaft; it is allowed to spin freely on it.  Around the very outside of the outer clutch basket you will find a heavy gear (your primary drive gear) that engages right onto the end of your crankshaft when you slide the basket onto the transmission input shaft.  This gear is usually ‘straight’ cut, but I have seen them angle cut too, with the only problem being that this design pulls the basket into the side of the motor when the crank accelerates adding quite a bit of extra side load that can accelerate bearing wear.  What is more common especially on Hondas, is to see a very small gear, maybe 5mm thick laying right up against the primary drive gear with it’s teeth offset exactly midway between the primary drive gears much larger teeth.  This small gear will move to one side or straighten out as you engage the basket, squeezing a separate bunch of springs in the process.  Why all this extra work you may ask?  To help eliminate primary drive lash, as the amount of lash or play in your primary drive system (the gear on the crank and the big gear around your clutch basket) is directly related to how loud your engine is.  There has to be clearance there to allow for thermal expansion and free gear rotation, but too much play and your engine will rattle when not under load.  Remember, your engine gives you power in explosive hits every time a plug fires, the system that smoothes out these hits is the summation of the springs in the back of your clutch basket, lash in all your gears, play in your drive chain or belt, the cush drive inside your back tire between the wheel and sprocket, and the rubber that your rear tire is made up of.  So now that your clutch outer basket is slid onto your transmission shaft (free to spin on a needle bearing arrangement) and the main outer primary drive teeth are engaged onto your crankshaft, you can see how the engine spins this outer clutch basket in no uncertain terms, but doesn’t spin your transmission at all.

Now lets assemble the clutch, the first piece to go inside the outer basket is a separating washer, then your inner clutch hub.  This aluminum clutch hub resembles a top hat, the brim of the hat is machined very smooth to work against your first friction plate, while the sides of your hat are grooved up and down to accept your metal plates.  Important to remember, that this inner clutch hub bolts onto the transmission shaft tight and spins with it, not on it like the outer basket.  Now, all the magic happens right here… You slide in your first friction plate with its fingers located into your outer basket until it bottoms up against your inner clutch hub, then you slide in a metal plate that is located into the grooves of your inner clutch hub, and then you continue staggering friction, metal, friction, metal and so on, repeating (depending on the horsepower of your bike), to a total of between 12 and 18 or so plates.

Now, play with it a bit until it becomes clear; as the engine turns (use a socket wrench, not the starter!) it turns your outer clutch basket (again, called your primary drive), which turns all your friction plates.  You will notice that the inner clutch hub and all the metal plates staggered between the friction plates are not spinning; they are motionless on the transmission shaft.  Now (with engine in gear and rear tire off the ground on a bike stand) with your left hand spin the back tire… You will see the transmission shaft and the inner clutch hub spinning, turning all the metals between the frictions.  This spinning relationship is what is going on when the engine is running, the bike is in gear and you are holding the clutch lever in, disengaging the clutch.  Now, with the bike still in gear, spin the crankshaft (which will again spin the outer basket and frictions but not the inner hub with its metals) but now use a finger and gently push on the outermost plate, which will sandwich the plates together mimicking you letting out the clutch lever and engaging the clutch.  You will hear the rubbing between the frictions and the metals get louder until the back tire starts to spin, press hard enough and you will physically connect the back tire to the motor just like during full engagement.  Now you know how the clutch operates, we will look at how the clutch lever does this for you, and then how we fit a pair of slippers in there!


  1. cialis 40 mg on September 18, 2020 at 12:14 am

    Prix Nolvadex Tunseusent [url=https://artsocialist.com/]Cialis[/url] Tercleds Can U Give A Dog Cephalexin mushinsArins best site to buy cialis online layefeageasy Buy Generic Viagra Online Pharmacy

  2. berkey on November 29, 2020 at 12:26 am

    Truly when someone doesn’t know after that its up to other visitors that they will assist, so here it takes place.|

  3. camo phone case on December 15, 2020 at 12:36 am

    I know this if off topic but I’m looking into starting my own blog and was curious what all is needed to get setup? I’m assuming having a blog like yours would cost a pretty penny? I’m not very internet savvy so I’m not 100% sure. Any tips or advice would be greatly appreciated. Appreciate it|

  4. the feed on December 24, 2020 at 3:34 am

    I simply couldn’t leave your website prior to suggesting that I actually enjoyed the standard info a person supply for your guests? Is gonna be back steadily in order to check out new posts|

  5. the feed on December 25, 2020 at 12:22 am

    Greetings from Idaho! I’m bored to death at work so I decided to browse your website on my iphone during lunch break. I love the info you present here and can’t wait to take a look when I get home. I’m amazed at how fast your blog loaded on my cell phone .. I’m not even using WIFI, just 3G .. Anyhow, amazing site!|

  6. feed on December 25, 2020 at 3:15 pm

    Incredible points. Sound arguments. Keep up the great work.|

  7. the feed on December 26, 2020 at 5:40 am

    It’s an amazing article in support of all the web visitors; they will obtain advantage from it I am sure.|

  8. replacement keys for ford on January 5, 2021 at 9:53 am

    Very nice post. I simply stumbled upon your weblog and wished to mention that I’ve truly enjoyed surfing around your blog posts.

  9. passive atmospheric water generator on January 6, 2021 at 2:43 pm

    Woah! I’m really enjoying the template/theme of this website. It’s simple, yet effective. A lot of times it’s tough to get that “perfect balance” between usability and appearance. I must say you have done a awesome job with this. Also, the blog loads very fast for me on Opera. Superb Blog!|

  10. kamagra buy on January 7, 2021 at 10:47 pm

    I needed to create you one little observation just to say thank you as before for these gorgeous knowledge you’ve discussed here. It has been certainly particularly generous of people like you to convey freely all that a lot of people could possibly have made available as an e book to earn some cash for their own end, especially considering the fact that you could possibly have done it if you ever decided. The guidelines also acted like a fantastic way to be sure that other individuals have similar dreams just like my own to grasp a whole lot more in terms of this issue. I’m sure there are many more fun occasions ahead for individuals that go through your blog post.

  11. cialis online on January 7, 2021 at 10:57 pm

    I’m just commenting to let you be aware of of the fabulous discovery my cousin’s daughter experienced going through your site. She even learned lots of issues, most notably how it is like to have a very effective giving mindset to have many others just gain knowledge of chosen grueling matters. You really did more than our desires. Many thanks for distributing the important, healthy, educational and as well as easy thoughts on the topic to Gloria.

  12. generic paroxetine on January 9, 2021 at 1:25 am

    I am glad for writing to make you know what a magnificent encounter my friend’s girl gained studying your web site. She learned several pieces, which include what it’s like to possess an awesome helping nature to let other folks very easily know just exactly several multifaceted subject matter. You truly exceeded people’s expectations. Thank you for presenting these powerful, safe, explanatory and in addition fun tips about this topic to Kate.

  13. risperdal cheap on January 9, 2021 at 3:07 am

    I precisely had to say thanks all over again. I’m not certain the things I could possibly have created in the absence of the actual creative ideas discussed by you concerning such concern. It absolutely was a real depressing concern for me personally, but considering a new professional fashion you handled it forced me to cry for delight. I’m grateful for the assistance and as well , expect you comprehend what a powerful job that you are carrying out educating men and women by way of a web site. I am certain you’ve never come across all of us.

  14. doxepin cheap on January 9, 2021 at 1:19 pm

    I simply wanted to thank you so much once more. I am not sure the things that I would’ve sorted out without the type of strategies revealed by you over that situation. It truly was an absolute horrifying matter in my opinion, however , spending time with the very specialised style you resolved that made me to leap over gladness. I will be happy for this service and then pray you realize what a great job you happen to be providing teaching people today using your web site. Most likely you have never got to know any of us.

  15. doxepin no rx on January 10, 2021 at 4:06 am

    I precisely desired to say thanks again. I’m not certain the things I could possibly have achieved in the absence of the basics contributed by you about my area of interest. Completely was a challenging circumstance for me, but being able to view a expert avenue you dealt with it forced me to cry for contentment. Extremely grateful for the advice and believe you are aware of a powerful job that you’re accomplishing educating many people all through a site. I’m certain you’ve never come across all of us.

  16. venlor online on January 10, 2021 at 4:07 am

    A lot of thanks for all your efforts on this site. Gloria loves engaging in investigation and it’s easy to understand why. Almost all know all concerning the dynamic means you give important secrets on the web blog and as well encourage contribution from others on that concern plus our daughter is always discovering a lot. Have fun with the remaining portion of the new year. You’re the one conducting a good job.

  17. venlafaxine generic on January 10, 2021 at 5:07 am

    Thank you for every one of your labor on this web site. My daughter really loves making time for investigations and it’s really obvious why. Most people learn all regarding the lively mode you present reliable tactics through this web site and even inspire participation from some others on the point then our favorite princess is really starting to learn a whole lot. Take advantage of the rest of the year. You are always doing a splendid job.

  18. superbeets on January 16, 2021 at 2:15 am

    Every weekend i used to pay a quick visit this web page, for the reason that i wish for enjoyment, since this this web page conations genuinely good funny information too.|

  19. tinder site on January 25, 2021 at 1:18 am

    tinder date , tinder app https://tinderdatingsiteus.com/

  20. LbgTaime on January 29, 2021 at 4:05 pm

    viagra headache cure online viagra review best viagra sale sites [url=http://genqpviag.com/]viagra 2 day delivery[/url] ’

  21. cheap flights on January 31, 2021 at 11:54 am

    After I originally commented I seem to have clicked on the -Notify me when new comments are
    added- checkbox and from now on each time a comment is added I get
    four emails with the exact same comment. There
    has to be a means you are able to remove me from that service?

  22. cheap flights on February 1, 2021 at 5:34 am

    I read this article fully on the topic of the difference of most recent and preceding technologies, it’s
    remarkable article.

  23. cheap flights on February 1, 2021 at 6:15 pm

    Unquestionably imagine that that you said. Your favourite reason appeared
    to be on the net the simplest thing to take into account of.

    I say to you, I certainly get annoyed whilst other people think
    about concerns that they just don’t recognise about.
    You managed to hit the nail upon the highest as smartly as outlined out
    the whole thing without having side-effects , other people could take a signal.
    Will likely be back to get more. Thank you

  24. JdbxTaime on February 3, 2021 at 2:35 am

    viagra ianada where to buy viagra in toronto generic viagra in canada [url=http://llviabest.com/]chinese viagra manufacturers[/url] ’

  25. best seo services on fiverr on February 4, 2021 at 9:50 pm

    xpwotktdm pegob wjtsomd rnis tievzcsoogsmldx

  26. JbbvTaime on February 5, 2021 at 3:23 pm

    canadian pharmacy world cialis daily discount pharmacies

  27. FqhhTaime on February 6, 2021 at 4:23 am

    price pro pharmacy canada pharmacy online store birth control

  28. AhkdTaime on February 7, 2021 at 12:46 am

    online pharmacy usa canadian pharmacies online prescriptions canadian pharmacy world

  29. Kuikviale on February 7, 2021 at 6:54 am

    online generic viagra questions about viagra viagra spanish

  30. FvfcDuash on February 7, 2021 at 7:13 am

    viagra 800 online pharmacy viagra viagra man walmart without prescription pharmacist

  31. JbnbBlarl on February 7, 2021 at 3:39 pm

    canada prescriptions drugs buy prescription drugs without doctor erection pills

  32. Kbcxblup on February 8, 2021 at 10:59 am

    online pharmacies online pharmacy canada cheap medications

  33. AqcfAlcomisom on February 8, 2021 at 11:58 pm

    what is better viagra or cialis or levitra?? cialis with dapoxetine 80mg overnight pharmacy 4u cialis

  34. LbsxTaime on February 9, 2021 at 12:52 am

    canada pharmacy online reviews viagra in ireland? canada pharmacies online

  35. NncsDuash on February 9, 2021 at 3:28 am

    online pharmacy canada buy viagra in south africa viagra mit paypal

  36. JbbnTaime on February 12, 2021 at 4:50 pm

    cialis excessive alcohol cialis a maxigra cialis dizziness side effects

  37. FqbbTaime on February 13, 2021 at 8:23 am

    payday loans indian tribes payday loan flyers what is a cash advance discover

  38. Kbbfviale on February 13, 2021 at 11:35 pm

    pfizer viagra online buy generic viagra in usa viagra sale online near south bend

  39. AhbzTaime on February 14, 2021 at 7:52 am

    payday loans payout in 15 mins guaranteed acceptance payday loan uk payday advance claremore ok

  40. JbnvBlarl on February 14, 2021 at 9:14 am

    mzi cash loans nc cash loans cash loan places in cambridge

  41. Kvaxblup on February 15, 2021 at 7:24 pm

    mr miser loans money at an annual rate of 24 hour cash advance miami fl trapped in a payday loan

  42. Jamesmub on February 15, 2021 at 8:41 pm

    http://bio-catalyst.com/ – chloramphenicol tablets
    buy keftab online
    [url=http://bio-catalyst.com/]buy sumycin[/url] order stromectol

  43. LabxTaime on February 16, 2021 at 8:42 pm

    forum cialis ou viagra cialis 10 mg 28 stГјck was ist am besten viagra cialis oder levitra

  44. AbcfAlcomisom on February 17, 2021 at 5:31 pm

    viagraaustralia herbal substitute for viagra paypal safe cheap viagra online

  45. https://www.shinsen-mart.com on February 22, 2021 at 11:36 am

    Best view i have ever seen !

  46. best hypertension medication on February 22, 2021 at 11:10 pm

    Today, considering the fast life-style that everyone leads, credit cards have a big demand throughout the economy. Persons throughout every area of life are using the credit card and people who aren’t using the credit cards have made up their minds to apply for even one. Thanks for revealing your ideas about credit cards. https://hypertensionmedi.com best hypertension medication

  47. alzheimer disease medications on February 23, 2021 at 12:14 am

    I am continually invstigating online for tips that can assist me. Thanks! https://alzheimermedi.com alzheimer disease medications

  48. Anxiety Medications on February 23, 2021 at 8:44 pm

    great post, very informative. I wonder why the other experts of this sector do not realize this. You should continue your writing. I am sure, you have a huge readers’ base already! https://anxietymedi.com Anxiety Medications

  49. medicines for atherosclerosis on February 23, 2021 at 9:22 pm

    You got a very superb website, Sword lily I noticed it through google. https://atherosclerosismed.com medicines for atherosclerosis

  50. bronchitis treatment on February 24, 2021 at 5:04 pm

    I wanted to compose a comment in order to appreciate you for all of the amazing advice you are giving at this site. My considerable internet investigation has at the end been compensated with awesome concept to exchange with my best friends. I ‘d admit that many of us readers actually are definitely blessed to be in a decent community with many awesome individuals with beneficial advice. I feel extremely blessed to have come across the site and look forward to many more amazing minutes reading here. Thank you again for a lot of things. https://bronchitismed.com bronchitis treatment

  51. https://uchinoshitsuji.com on February 27, 2021 at 5:30 pm

    Best view i have ever seen !

  52. Clarkdiumn on February 27, 2021 at 9:57 pm

    utxub dhwew dh9k

  53. Kndnblup on March 2, 2021 at 12:01 am

    maximum dose of viagra what are the side effects of viagra how fast does viagra work

  54. NbmoDuash on March 3, 2021 at 7:24 pm

    buy cialis in canada discount super active cialis cialis without prescription

  55. https://j-website.net on March 4, 2021 at 5:31 pm

    Best view i have ever seen !

  56. MarcosSes on March 5, 2021 at 1:48 pm

    tadalafil online: http://tadalafilonline20.com/ tadalafil online 20

  57. junk car buyer on March 5, 2021 at 10:18 pm

    I really like what you guys are usually up too. This sort of clever work and coverage! Keep up the amazing works guys I’ve added you guys to my blogroll.|

  58. Wesleyfus on March 6, 2021 at 6:43 am

    order tadalafil purchase tadalafil
    40 mg tadalafil

  59. https://thuocladientu123.com on March 6, 2021 at 9:25 pm

    Best view i have ever seen !

Leave a Comment