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Discussion in 'Hubs, Gearboxes, Sprockets and Chains' started by MaxPower, Nov 26, 2009.
Oh, huh thanks. Do they make a internal gearbox for 2 smokers???
Are these hoot gearboxes notorious for breaking down fast?
If you can find a an engine with the same bolt hole pattern and clutch diameter as the gearbox then yes.
That's what I've heard too but I can't say so first hand.
Ic, but couldent you run the chain from the motor to the shaft of the box via chain? To look like a board tracker?
I like Gareth's ra drive!
What gear set did you use as a base for your project?
...something that might be available here???
Will this fit Hua Sheng 4stroke 142f I'm sure but the sprocket is wrong as I need one to fit 415 chain??
just ordered my qmatic. hopefully no more repairs!!!!
Hey Guys. It is 2016. Perhaps someone in the know could post updated information?
Hi mezzenger, I am not in tune with everything being made, BUT I do know that EZMotorbike makes the Q-matic, and the Pacesetter drives especially to fit HauSheng and Honda GX50H 5/8 keyed shaft engines, also the internal clutch model of the Hau Sheng (with special adapter we make).
The Pacesetter is also available drilled to bolt right on to the Harbor Freight 79cc Greyhound, and the 99cc predator models.
It is adaptable to many other engines, but these are the patterns I am currently aware of. I am currently interested in mounting one to a 3.5 HP Briggs and Stratton Vertical tho I am not sure how I will bolt on to the old engines that I currently have.
I hope this helps answer your question.
I'm kinda new to the 4 stroke relm of MBs but I had a 4G fail on me twice inside of the first month of use. Now I'm looking at getting a CVT pocket bike transmission. Been eyeing a few that are surprisingly much cheaper than the Grubee 4G or the older Bikeberry 5G single chain & the clutch drum & bolt pattern looks like it would fit my HS 142F. Can anyone let me know what pocket bike CVT transmissions can fit my 4 stroke motor? I'll attempt to post the measurements of one CVT I was looking at getting.
Because I am new here I can't post links...
What do people think about the Piston Bikes "79cc Transmission for Predator 4 Stroke"
If you do a Google search for "79cc Transmission for Predator 4 Stroke" - a number of links show up and about 4 down is the one for PistonBikes. Comes with a MaxTorque clutch for $100.
What do people think about the Max-Torque clutches? Can the Max-Torque clutch be "tuned".
Thanks so much.
That clutch looks like a MaxTorque clutch but does not have MaxTorque stamped on it.
that clutch is not a max torque. and it doesn't say anywhere that it comes with an MT. MTs have internal keyways. this clutch has an internal key. One that I got (clutch only) was actually 16mm, not 5/8". Extra .005" on the diameter can destroy your crankshaft eventually. you never know with junk.
MTs are great clutches when used on engines at or under their rated power of 8hp. They can be tuned. If you run low gearing of around 12 to 10.5 you can just run the clutch stock, if you go tall like 10 to 8:1 I suggest replacing the stock silver spring with a green spring.
That plate might still be a good deal though. make sure you get a MT clutch with the right sprocket size for the chain for that plate, probably #35 but check first.