ColdCruiser
Member
I'm trying to decide what type of transmission to use on my first build. Seems like the Grubee 4G would have been a good choice but they seem to be out of stock permanently. Ghost Racer 7G might work but appears to be a bargain brand. EZ Q-Matic looks like a very viable option EXCEPT for the $300. That pretty much leaves the Comet TAV2 or the Blast LED. However, they are both 3/4" shaft and the Predator 79 is 5/8" so I bet it would just need an adapter.
Does anyone have experience with this or opinions about the available options?
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$14 Shaft Adapter
5/8" x 3/4" x 3" Shaft Adapter Pulley Bore Reducer Sleeve Bushing Sheave & Key
Designed to slip fit on your 5/8" diameter crankshaft with 3/16" keyway and enlarge it to 3/4 diameter with 3/16" keystock.
http://www.ebay.com/itm/5-8-x-3-4-x...ducer-Sleeve-Bushing-Sheave-Key-/251943004476
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TRANSMISSION
$99 - Blast LED - Predator 212cc GO KART MINI BIKE TORQUE CONVERTER CLUTCH #40/41 10T or #35 12T
Compatible on most small engines with horizontal shaft. This unit replaces: Comet 218353A, 219552A, 219456A, 203814A, and 217610A TAV2 30-75 Torq-A-Verters, Yerf Dog Driver Unit Q43201W
http://blastled.com/go-kart/30-seri...ni-bike-torque-converter-3-4-35-40-41-12t-10t
$119 GoPowerSports TAV 30-75 Torq-A-Verter, (Comet Clone)
http://www.gopowersports.com/tav-30-75-torq-a-verter-comet-after-market-replacement/
$126 GoPowerSports Comet TAV2 218353 Torque Converter
Works On Predator Engines, 3/4 Driver Pulley, 5/8" Driven Pulley - 6" diameter
30 Series Asymmetrical Belt Aluminum Backplate with all Hardware, comes with 10T and 12T Sprockets, Belt Guard included.
http://www.gopowersports.com/tav-2-3-4-drive-10t-40-41p-torque-converter/
$199 - Torq-A-Verter, 3/4" Bore 10 Teeth, #40/41 Chain Torque Converter. Made in the USA
https://www.gokartsupply.com/tavapp.htm
$289 - Ez Motorbike EZM QMatic Gearbox Drive Transmission with front pulley, belt, and all components needed to replace other brands and types. Belt cover is included.
https://heliobikes.com/
!!!NO "Grubee SkyHawk" [China Gas] 4G T-Belt Transmission Available!!!
$140 - Grubee Skyhawk 4G belt drive torque converter with centrifugal clutch to lower the output RPM`s and raise the torque. 5/8 shaft, 76mm/3inch clutch, 6:1 reduction, 11T 1/2 inch drive Free Wheel output sprocket.
http://www.bicycle-engines.com/4G-T-Belt-Transmission-Only.html
$149 - 7G Ghost Racer Transmission for 49cc 5/8th STRAIGHT SHAFT ENGINE ($239 w/ hs engine $129)
http://custommotoredbicycles.com/ez...parts/more_4_stroke_parts_79cc_harbor_freight
$50 Max-Torque 5/8" Pulley Clutch
Does anyone have experience with this or opinions about the available options?
- - - - - - - - -
$14 Shaft Adapter
5/8" x 3/4" x 3" Shaft Adapter Pulley Bore Reducer Sleeve Bushing Sheave & Key
Designed to slip fit on your 5/8" diameter crankshaft with 3/16" keyway and enlarge it to 3/4 diameter with 3/16" keystock.
http://www.ebay.com/itm/5-8-x-3-4-x...ducer-Sleeve-Bushing-Sheave-Key-/251943004476
- - - - - - - - -
TRANSMISSION
$99 - Blast LED - Predator 212cc GO KART MINI BIKE TORQUE CONVERTER CLUTCH #40/41 10T or #35 12T
Compatible on most small engines with horizontal shaft. This unit replaces: Comet 218353A, 219552A, 219456A, 203814A, and 217610A TAV2 30-75 Torq-A-Verters, Yerf Dog Driver Unit Q43201W
http://blastled.com/go-kart/30-seri...ni-bike-torque-converter-3-4-35-40-41-12t-10t
$119 GoPowerSports TAV 30-75 Torq-A-Verter, (Comet Clone)
http://www.gopowersports.com/tav-30-75-torq-a-verter-comet-after-market-replacement/
$126 GoPowerSports Comet TAV2 218353 Torque Converter
Works On Predator Engines, 3/4 Driver Pulley, 5/8" Driven Pulley - 6" diameter
30 Series Asymmetrical Belt Aluminum Backplate with all Hardware, comes with 10T and 12T Sprockets, Belt Guard included.
http://www.gopowersports.com/tav-2-3-4-drive-10t-40-41p-torque-converter/
$199 - Torq-A-Verter, 3/4" Bore 10 Teeth, #40/41 Chain Torque Converter. Made in the USA
https://www.gokartsupply.com/tavapp.htm
$289 - Ez Motorbike EZM QMatic Gearbox Drive Transmission with front pulley, belt, and all components needed to replace other brands and types. Belt cover is included.
https://heliobikes.com/
!!!NO "Grubee SkyHawk" [China Gas] 4G T-Belt Transmission Available!!!
$140 - Grubee Skyhawk 4G belt drive torque converter with centrifugal clutch to lower the output RPM`s and raise the torque. 5/8 shaft, 76mm/3inch clutch, 6:1 reduction, 11T 1/2 inch drive Free Wheel output sprocket.
http://www.bicycle-engines.com/4G-T-Belt-Transmission-Only.html
$149 - 7G Ghost Racer Transmission for 49cc 5/8th STRAIGHT SHAFT ENGINE ($239 w/ hs engine $129)
http://custommotoredbicycles.com/ez...parts/more_4_stroke_parts_79cc_harbor_freight
$50 Max-Torque 5/8" Pulley Clutch
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