List of gearboxes

MaxPower · #1 (**permalink**) 11-26-2009, 10:25 AM

I've been trying to compile a list of 4 stroke gearboxes available on the market.

Updated!!!!

"Hoot."- theses are the most available but also the cheapest and least durable. There have been numerous threads describing complete failures after a short period. There are Three types, a linear gear, helical gear and an updated version that uses a chain. The chain version is supposed to be much better.

Grubee Stage III and II gear box- These are better that the Hoot but are noisy and the engagers break. It is a gear mesh and the box is filled with oil which some say causes more friction

Grubee G4. This is the latest Grubee gearbox. Its belt driven and available with and without an engager. There have been some bad reviews about this box being too wide and the freewheel breaking.

EZM Q-matic - claim to fame is that its all american. the box was designed by "Quenton Guenther." The claim is that its the best box on the market but you have to pay for it. It's quite expensive. The EZM 'Q-Matic' is a automatic with a max-torque made centrifugal clutch. The EZM 'Silent-Drive' is a manual version. Both are a belt drive primary and chain secondary design (the manual is easily converted to a belt secondary. Helmutt cycles is using this box with a belt drive). At this time, the manual 'Silent-Drive' is only available with a kit. The auto 'Q-Matic' is available in kit form or as a stand alone replacement for Honda GXH50, and HuaSheng 142f as well as a few other 4cycle engines with a 5/8" drive shaft. The drive is only 2" from the mounting flange of the engine. EZ Motorbike of Lebanon: Welcome to EZ Motorbike of Lebanon

Firebelly hardbox- This one is also expensive (350) and I don't think there are any to be had. They are in development of a new gearbox, the ShellyBelly Whisper Drive. New in frame 4 stroke kit in development! picture: http://motorbicycling.com/attachment...ment-047-1.jpg

Sick bike parts shift kit- SBP 4 Stroke Shift Kit will not be limited to any one specific gear box. Shooting for early January release. However, due to the variations in the gear box designs, the first version of the kit will be specifically designed to work with the Hoot gear drive box and Grubee Stage II and III gear box. Once that hits the market Sick Bike Parts will continue to alter the kit to work with the EZM gear boxes, Firebelly gear box and the Grubee belt drive box.

Staton- Staton-Inc motorized bicycles, bike kits & gear drive kits. They've been making kits since 1984, long before any of the other companies listed were even conceived. Its a Gear mesh that's machined in the US and is intended to mounted on a rack.. Lifetime warranty on the gearbox. They sell a Nuvinci CVT kit that looks really cool.

CVT- I'm still researching this type. I've heard of people taking them off of pocket bikes and retro fitting them to their motors. I don't think there are any company specifically making them for 49cc honda's and Huasheng

azbill · #2 (**permalink**) 11-26-2009, 11:01 AM

I've been trying to compile a list of 4 stroke gearboxes available on the market. I'd appreciate one of the more experienced members to make a list thats more accurate.

"Hoot."- Seems like theses are the most available but also the cheapest and least durable. There have been numerous threads describing complete failures after a short period. There are two types, first version is a gear mesh and an updated version uses a chain

Grubee Stage III and II gear box- These are better that the Hoot but are noisy and the engagers break. It is a gear mesh and the box is filled with oil which some say causes more friction

Grubee G4. This is the latest Grubee gearbox. Its belt driven and available with and without an engager. There have been some bad reviews about this box being too wide and the freewheel breaking. Regardless I'm planing on buying the box from Spooky Tooth cycles when they get them in. Roland is a good guy I'm sure he'll help me out if it breaks.

EZM Q-matic - claim to fame is that its all american. the box was designed by "Quenton Guenther." The claim is that its the best box on the market but you have to pay for it. It's quite expensive. I think EZ MOTORBIKE COMPANY makes two types, one with a manual clutch and one with a centrifugal, not sure which is which. Helmutt cycles is using this box with a belt drive EZM "Q"-matic production started
the EZM 'Q-Matic' is a automatic with a max-torque made centrifugal clutch
the EZM 'Silent-Drive' is a manual version
both are a belt drive primary and chain secondary design (although, as mentioned, the manual is easily converted to a belt secondary)
I forgot to mention...
at this time, the manual 'Silent-Drive' is only available with a kit
the auto 'Q-Matic' is available in kit form or as a stand alone replacement for Honda GXH50, and HuaSheng 142f as well as a few other 4cycle engines with a 5/8" drive shaft

Firebelly hardbox- This one is also expensive (350) and I don't think there are any to be had. I've never been able to log on their website firebellycycles.com/ and the only info I found on it was off this forum. FireBelly 4 Stroke "Hard Box" Transmission. They even advertise on this site.

Sick bike parts shift kit- I'm not sure where I read it but I think SBP is using a Firebelly hardbox to make a 4 stroke shift kit. If its performance is anything like their 2 stroke shift kit, then It'd be worth the money.

Staton- Staton-Inc motorized bicycles, bike kits & gear drive kits. I don't know much about this box but I've heard its good. Its a Gear mesh that's machined in the US. they sell a Nuvinci CVT kit that looks really cool. the box is intended to mounted on a rack.

Please, Please add to this list. Please mention each box in your reply so that It can be a running list and someone won't have to search this entire thread for a complete list.

Ghost0 · #3 (**permalink**) 11-26-2009, 11:38 AM

Just for clarification, SBP 4 Stroke Shift Kit will not be limited to any one specific gear box. Shooting for early January release. However, due to the variations in the gear box designs, the first version of the kit will be specifically designed to work with the Hoot gear drive box and Grubee Stage II and III gear box. Once that hits the market we will continue to alter the kit to work with the EZM gear boxes, Firebelly gear box and the Grubee belt drive box. Hope that clears some things up.

**fairracing31** · #4 (**permalink**) 11-26-2009, 01:08 PM

Excellent Thread MaxPower

Thank You

xlite · #5 (**permalink**) 11-27-2009, 09:04 AM

Quote:

Originally Posted by MaxPower

"Hoot."- Seems like theses are the most available but also the cheapest and least durable. There have been numerous threads describing complete failures after a short period. There are two types, first version is a gear mesh and an updated version uses a chain.

Hoot comes in linear gear and helical gear so actually there ar 3 types not 2. Other than that it looks like a very accurate assesment if 4 stroke drive trains.

From what I can tell none of the 4 stroke kits compete with 2 strokes ( yet) in terms of overall reliability and certainly cost. I have a HT with 14k on it (and no compression) which is far more than any 4 stroke. I have 4 chinese HS kits and several engines gathering dust so would love to hear of any success stories regarding 4 strokes.

tyrslider · #6 (**permalink**) 11-27-2009, 12:12 PM

Hey thanks for the mention. Your info is basically correct.
The 1st gen FireBelly HardBox was a general success. Though there's some retro engineering that had to happen to those so we're spending the winter testing the redesign. Many new products are in development.

We apologize for the frustration w/ the website. We expected to be finished long ago. But we hope you'll all check us out when we're up and running shortly!

Mrs. FireBelly and I are feverishly data entering (me) and writing code (her) to launch the FireBellyCycles.com website. It is long overdue and we are very excited to be almost finished! Thanks again, Evan FBC

Engler · #7 (**permalink**) 11-27-2009, 07:06 PM

Anybody has shift kit from Scooter Guy?

MaxPower · #8 (**permalink**) 11-28-2009, 11:07 AM

4 cycle gear boxes!?!? Anyone care to re-post a list with updates?

MaxPower · #9 (**permalink**) 11-28-2009, 08:11 PM

Please add to this. Trying to make this list as factual as possible. It would be great if some one could add links to manufacturers/dealers and price estimates.

WayneC · #10 (**permalink**) 11-29-2009, 10:08 AM

Since nobody else has mentioned them, I'd like to add the pocket bike (X2) CVT. I use it on my Subaru/Robin EHO35; direct bolt-up. Works on 2 strokes too FWIW.
Works on Honda, Huasheng, others with 76mm clutch. Neat Times has 'em on both. Many chain and sprocket combos
available. This is one source: Fancy Scooter: Gas Scooters and Electric Scooters Retail and Wholesale
Ebay and scooter sites have 'em too.
Check out my build at the link below.
WC