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  1. bob58o

    Best Manual Clutch Option on a Three Speed Tranny

    you have from crank to transmission input, internal transmission, transmission output to diff, and differential internal reduction. You have a lot going on and we don’t know how many teeth on all those connections.
  2. bob58o

    Best Manual Clutch Option on a Three Speed Tranny

    You are replacing a CVT / Transmission with a clutch / Transmission? Because the belt was slipping? The clutch is just going to burn. CVT was probably correct. The 30T sprocket was probably the problem. Make 30T into 60T and that might solve the problem. Might not be able to shift on the fly...
  3. bob58o

    GX270 misfiring

    Get one of these and some ear protection.
  4. bob58o

    GX270 misfiring

    Still using stock exhaust? Then I agree the jetting is probably too large. Usually open pipes are used with those kits. Air filter, exhaust, and jet. If you only do two of the three, probably will have issues. Valve lash was set correctly after changing springs? Lash set when both valves are...
  5. bob58o

    Bobs 2024 Build Off Build

    I made an offer on a house in Chillicothe MO without ever seeing the place in person. I wanted someplace that was slightly warmer than Chicago winters, good amount of sun. Decent amount of rain. I selected Chillicothe based on proximity to a Walmart and Lowe’s. My offer got rejected. How I...
  6. bob58o

    Bobs 2024 Build Off Build

    People find stuff on the side of the road and try to bring it for store credit. On my first day, a customer called to say their shower door was opened and gone through and taped back together. I was told to tell them that we have to open and inspect the product to make sure it was all there and...
  7. bob58o

    CVT Help

    The better answer is when you realize 212cc is small for an off-road buggy and want to upgrade to a 420 and need a 1” 40 series TAV. That’s when hobbies started with $99 harbor freight engines turn into $1000 projects. lol
  8. bob58o

    CVT Help

    I dunno. I used a cheap 30 series with 7” driven on my highest HP, highest RPM engine. It turned about 8500 RPM and probably made more than 15 HP. I did swap out the weights and springs in the driver unit. El Lobo Kit from MiniChoppersSoCal.com Banner Blue Powder Coat 6” Wheels 13” Tires 54T...
  9. bob58o

    CVT Help

    the minibike I guess I had 13.5” tires and 6.75:1 sprocket ratio. 8T on front, 54T in back. Skip to 2:15 for top speed run slightly uphill. Black Mamba Jr Cam, 26 lb valve springs, SS valves, Billet Retainers and keepers, ARC +0.020" Billet Connecting Rod, gx390 carb, NR zero degree adapter...
  10. bob58o

    CVT Help

    This was my buggy with cheap 30 series TAV, 16” tires, 7.5 :1 sprocket ratio. Skip to like 40 seconds.
  11. bob58o

    CVT Help

    Well I think the cheap TAV kit will handle 12 HP and 7000K rpm. You’ll need to use a gear ratio that helps with the off road hills, top speed will be an afterthought. Something like 16” tires for an off-road buggy with a 212cc, 30 series TAV kit, genuine comet belt, 8T front sprocket, 60T rear...
  12. bob58o

    CVT Help

    I used a cheap 30 series kit on a minibike using a mildly built 212 with black mamba jr camshaft and gx390 carb. It turned around 7500 RPM at 50 mph and did wheelies when I cracked the throttle. I think it had about 18” tires. I don’t remember the gear ratio I used. But probably about 7.5 : 1...
  13. bob58o

    Bobs 2024 Build Off Build

    From what I’ve seen so, far it goes like this… Answer phone and listen for keyword to determine which department to transfer the call. Transfer the call the appropriate department and wait for it to come back to the desk because nobody picks up. Pick back up the call and park it then use the...
  14. bob58o

    Bobs 2024 Build Off Build

    Currently working the Service Desk at Home Depot part time. I got a couple other side gigs too. First time with a “real” job since my series of spine surgeries. Not a job I want, but I needed something to help with the bills. I just applied to a bunch of places close to home. A couple...
  15. bob58o

    Bobs 2024 Build Off Build

    I was unaware there was a track. lol. Probably won’t finish this year. I only started a build thread in the contest section because Will wanted to build, but I think he bowed out a while back. I started a new job so side projects have taken the back seat. Plus I like having a project to work...
  16. bob58o

    Bobs 2024 Build Off Build

    Do I have a problem interacting with people? Or do people have problems with follow up questions? Im sure I’m the problem, but I don’t think I should be. P.S. … I think the BOV on the blower will work Denny. Lol
  17. bob58o

    Bobs 2024 Build Off Build

    Please… if you choose to argue with me please have facts to support your claims. I would guess my itelligence is 2 standard deviations above the mean. Maybe I’m pompous. Maybe you’re wrong. If you can’t talk to support your claim. Eat poo. PS: nothing to do with GoKarts. People in real...
  18. bob58o

    Predator Go Kart dying under load.

    The saddest GoKart story I ever heard.
  19. bob58o

    Predator Go Kart dying under load.

    If 7.5 : 1 gear ratio doesn’t get you all the TQ you need, swapping the 6” driven unit for a 7” driven unit will increase the amount of torque to the pavement by about 15%. IIRC 6” is 2.68 :1 in Low 7” is 3.12 :1 in Low
  20. bob58o

    Predator Go Kart dying under load.

    Too heavy, Too large diameter of rear tires, too small of rear sprocket, too big of front sprocket. You’ll want at least 6x the number of teeth on the rear sprocket compared to the front sprocket. 60:10, 66:11, 72:12 … Also probably time to disassemble the front pulley to clean and inspect...
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