Register

User Tag List

Thanks Thanks:  0
Likes Likes:  0
Dislikes Dislikes:  0
Page 1 of 2 12 LastLast
Results 1 to 10 of 16
  1. #1
    Junior Member JTalmage's Avatar
    Join Date
    Jan 2017
    Location
    Sardinia, Ohio
    Posts
    17
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0

    5hp briggs clutch mounting issue and bolt size??

    I'm seriously >>.<< close to finishing my mini bike build.... but I'm hitting a fairly large snag..

    So my engine is a 5hp briggs flathead and I'm using the typical centrifugal clutch but I have to flip the clutch so the sprocket is on the inside towards the engine.... so the chain lines up..

    Only problem is, the keyway and set screws for the clutch are now useless. So what's a guy to do???

    I bought a 5/16-24 bolt because that's what I saw all over the internet but it was a lie. I'm thinking it's a 3/8-24 bolt.

    But is the bolt alone strong enough to hold this clutch on and keep it from spinning/slipping under load???

    Thanks

    Jesse

  2. #2
    Senior Member
    Join Date
    Jan 2017
    Location
    San Diego
    Posts
    131
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Both the keyway & set screws will work with the clutch mounted in that direction. They did on mine.


  3. #3
    Junior Member JTalmage's Avatar
    Join Date
    Jan 2017
    Location
    Sardinia, Ohio
    Posts
    17
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    My crank is not that long. The clutch slides on, and hits the side of the engine, and the section of the clutch with the keyway and slot is not on the crank. If I flip it back around it would work but the chain would not be straight at all.

  4. #4
    creia's Avatar
    Join Date
    Jan 2011
    Location
    Duarte, CA
    Posts
    3,467
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Quote Originally Posted by JTalmage View Post
    My crank is not that long. The clutch slides on, and hits the side of the engine, and the section of the clutch with the keyway and slot is not on the crank. If I flip it back around it would work but the chain would not be straight at all.
    What is the length of the crank?
    Michael

  5. #5
    Junior Member JTalmage's Avatar
    Join Date
    Jan 2017
    Location
    Sardinia, Ohio
    Posts
    17
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    I'll have to measure that this evening when I get home.

    does a long snout crank exist I could easily swap in?

  6. #6
    Senior Member
    Join Date
    Mar 2012
    Location
    Wyoming Mi
    Posts
    1,409
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    You are going to need a longer crankshaft for your application, I have a short crank 5HP Briggs on my manco 2 seater kart with the clutch sprocket side out, it would not work in most mini bike applications without a jackshaft set up to align sprockets.............Tom.

    I have a bunch of 5HP Briggs parts around here, if you ever get up this way I'll give you the crank you need.
    Last edited by the beekeeper; 09-14-2017 at 06:14 PM.

  7. #7
    creia's Avatar
    Join Date
    Jan 2011
    Location
    Duarte, CA
    Posts
    3,467
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Quote Originally Posted by JTalmage View Post
    I'll have to measure that this evening when I get home.

    does a long snout crank exist I could easily swap in?
    Provide the crank length measurement.
    Michael

  8. #8
    Junior Member JTalmage's Avatar
    Join Date
    Jan 2017
    Location
    Sardinia, Ohio
    Posts
    17
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Crank snout is 1.25" in length.

    20170914_223527.jpg

  9. #9
    creia's Avatar
    Join Date
    Jan 2011
    Location
    Duarte, CA
    Posts
    3,467
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    You are screwed with that short crank length. Start looking for a replacement crank with a business end at least 2.25" long. or another engine with one. Unless you are "married" or otherwise emotionally attached to your engine the latter may be easier and cheaper.
    Michael

  10. #10
    Junior Member JTalmage's Avatar
    Join Date
    Jan 2017
    Location
    Sardinia, Ohio
    Posts
    17
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Well, I did buy a carb and intake specifically for it, and it runs well. I'll have to hit up Beekeeper to see if he'll ship that crank. I'd totally swap cranks at this point.

    Someone else told me a Bravex style clutch would work, but I'd have to bolt it still, and I suspect the keyway still would not go where it needed to, and I'd just be spending more useless money. I already bought a new Max Torque clutch too... so at this point I'll put a crank in it.

 

 
Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •