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  1. JimD

    Help with clutch after crankshaft replacement on predator 212

    Hellion , you certain do nice work and did a great job on the logo. Now if you could just get this to print out I would appreciate it. The china copy is just like this.
  2. JimD

    Help with clutch after crankshaft replacement on predator 212

    Mystery solved you have a 16mm shaft. You aren't the first to use the magic hammer to get it on. Getting it off is going to be the ***** and most likely the drum no longer free spins on the sleeve but it is a lesson learned and you are wiser for it, we hope.
  3. JimD

    Help with clutch after crankshaft replacement on predator 212

    Several ways the crank can get worn down and Hellion has one example. The most common one is that crank you got came rom an engine that had the clutch mounted OUTBOARD and he wore the bushing out in the clutch and then the sprocket started wearing on the sleeve and then wore into the crank...
  4. JimD

    Help with clutch after crankshaft replacement on predator 212

    I think he must be from Atlanta that is where you get neat crankshafts.
  5. JimD

    Help with clutch after crankshaft replacement on predator 212

    Well let's just check out the china clutch to see what you have. Take a penny and see if it fits nicely into both ends of the clutch. A penny is exactly .750 (3/4" ) in diameter and is a great measuring device. If the penny fits in the clutch then you know the new clutch has the correct...
  6. JimD

    Help with clutch after crankshaft replacement on predator 212

    Measure the crankshaft diameter so we have a clue what you are talking about. Sounds like you got a 5/8" or metric crank and not the 3/4" (.750) you thought you were buying. Where did you buy it from is another question? See if the bolt you had holding on the clutch before fits the new...
  7. JimD

    Look what the dog did!!!

    Good looking car Denny. Was going to have you stop by for a tour and pick up some steel cut-offs for projects but you made the trip before I could make the suggestion. You can give the dog a treat, he has a good eye for beauty.
  8. JimD

    1960/61 Rupp Kart?

    There is over 50 guys there in Ohio that are members of the VKA (Vintage Karting Association) with a web site with the same name. They could tell you where every nut and bolt go. Just about to go down to a race by the VKA in Barnesville, GA on April 9, 10, &11. There are several gatherings in...
  9. JimD

    Centrifugal Clutch with Needle Bearings

    The Foreigner (2017) is a high-octane action-thriller directed by Martin Campbell, starring Jackie Chan and Pierce Brosnan. The plot follows a London businessman (Chan) who seeks vengeance against the IRA radicals responsible for his daughter’s death, leading to a deadly showdown with a British...
  10. JimD

    Centrifugal Clutch with Needle Bearings

    Nitric acid is used to create many different types of explosives like nitroglycerin and trinitroglycerin (TNT). These are military grade and used for national defense. Be inventive, EZCOME-EZGO you will come up with something in your lab. I got a couple bags of fertilizer you can mix with it...
  11. JimD

    Centrifugal Clutch with Needle Bearings

    Thank you for the fine compliments. Wish I could take credit for the design but the original owner, George Fields, came up with that design in 1970 and it is the most copied clutch out there. My biggest competitor, Comet, copied it in 1983 and the china boys have also done the same. The...
  12. JimD

    Centrifugal Clutch with Needle Bearings

    The smallest 3/4" crankshaft sprocket you can get with a needle bearing is a 13 tooth. All 12 tooth sprockets in the #35 with be a bushing. BUT neither the bushing or the needle bearing are doing anything once you are moving. They are non-functional while moving, they only come into play at...
  13. JimD

    Driven pulley keeps pinching belt…

    Ramp is on the wrong side for an outboard mount. Wrong spring or flip it around 180 degrees so the ramps are next to the engine. In your picture I consider that an outboard mount but based on the way the ramps move you would have to reverse that unit to have it work correctly.
  14. JimD

    I need a new table saw

    If you are not familiar with Facebook Market Place it is really something. Changes everyday with new stuff and a lot of FREE stuff especially old snow throwers and lawnmowers that no longer work. Old people like myself that have a table saw in the basement and they are moving find that no one...
  15. JimD

    I need a new table saw

    Go to Facebook market place and you will find one close by and many times they are FREE because they are moving and young people don't want or know how to turn them on.
  16. JimD

    Hello, new to karts and current project (Manco 3005B-09)

    Manco only used the series 30 they didn't want to carry two different styles to confuse customers so Max-Torque only sold them clutches and Comet sold them the t/c. Denny you didn't mention what kind of belts to buy--I always thought that was automatic from you. He should get rid of all the...
  17. JimD

    20mm Crank

    Give me a few days, got to shave and look presentable.
  18. JimD

    20mm Crank

    Hellion -- I can certainly make you one or walk you through what I do. The only clutches you cannot do it with are the china ones with the built-in-key. Most of the guys on this site are very clever to start with and walking people through it is fairly easy IF YOU OWN A LATHE. Maybe that...
  19. JimD

    Can I place a centrifugal clutch on the axle instead of on the engine ?

    Here is an example of a jackshaft with a clutch on it. The reason it was done is that little Honda 50 goes 7,200rpm and idles at 2,900. Those kind of rpms scare me plus the engine makes it damn difficult for a clutch because the crankshaft is only 1.250 long and the drilled and tapped hole is...
  20. JimD

    Alpha 7 / Mac10

    On the direct drive I have seen 8 tooth sprockets and with a clutch you could get down to a 9 tooth was the smallest you could run with a bushing and 10 tooth had a needle bearing. Those really were the "good old days" when ingenuity and innovation was what put you on the podium as well as "no...
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