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Max-Torque Drive Belts

Max-Torque Torque Converters

Max Torque Belts

Max-Torque Belts

SKU
Description
Length
Center Distance
Price
Add to Cart
MT-TCBLT
BELT MAX TORQUE 97
29.375 OC
7.00 to 7.125
34.50

MT-TCBLTL
BELT MAX TORQUE 98
30.250 OC
7.375 to 7.500
34.50

MT-RMT3125
BELT MAX TORQUE
31.375 OC
8.200 to 8.325
34.50

12-12462
BELT MAX TORQUE 37x125
37 x 125
MURRAY 37x125
34.50

The Symmetric V-Belts used on Max-Torque Torque Converters are angled at 15 degrees on each side, for a combined angle of 30 degrees, to match the sheaves of both the Driver Clutch and the Driven Pulley. 3/4" Top Width (.750 +/- .031). A Standard 5L or B Belt will NOT WORK because they're too narrow at 21/32" (.656) - .100 smaller. The center to center distances are based on a 7" Outer Diameter Driven Pulley, which is the ONLY size Driven Pulley Max Torque manufactures.

Go Kart Torque Converter Center Distance


An American Max-Torque Variable Speed Drive System consists of a Driver Clutch, Driven Pulley and a Symmetric V-Type Belt. The Driver Clutch has two 15 degree variable pitch sheaves and mounts on the engine crankshaft. As the RPM's increase, above the idle speed of 1850 RPM, the clutch is activated by centrifugal force. The floating sheave of the driver clutch is forced inward as the RPM's increase. Contact is made with the Belt, forcing it to move upward on the Driver Clutch Sheaves and downward on the Driven Pulley Sheaves. The 7" outer diameter Driven Pulley has two 15 degree variable pitch sheaves that are mounted on the Jackshaft. The Driven Pulley has been Designed to Float on the Jackshaft. It should NOT be Fixed. Once the belt is aligned with the driver, all float with the driver will be towards the engine.

At Idle Speed- The driver clutch is disengaged. No tension on the belt. The driven pulley is immobile.

At Low Speed- With acceleration, the driver clutch sheaves begin to close. The tension on the belt moves the driven pulley.

At Middle Speed- With continual acceleration, the driver sheaves move to close, as the driven sheaves move to open.

At High Speed- The driver sheaves are closed. The belt has attained maximum height on the driver clutch and traveled the maximum downward distance on the driven pulley.

Your complete unit must be mounted on parallel shafts with a desired center distance no greater than 6 13/16 (6.8125) inches. After it is centered at idle the driven pulley must have at least 3/8" inward float, to properly align with the driver clutch. DO NOT USE UNIT WITHOUT COVERGUARD IN PLACE.

Max Torque Drivers

Genuine Max-Torque
Driver Clutch 3/4" Bore

SKU
Description
Price
Add to Cart
MT-TCDRS34
MAX TORQUE DRIVER 3/4 BORE
79.50

Mounts on a 3/4" crankshaft with 3/16" keyway.


Max-Torque Torque Converter


Max Torque Driven

Genuine Max-Torque
Driven Pulley 3/4" Bore

SKU
Description
Price
Add to Cart
MT-TCDNS34
MAX TORQUE DRIVEN UNIT
89.50

Mounts Outboard, tension spring facing away from engine.


Max-Torque Torque Converter
Ronghai 20 Drivens

3/4" Bore Symmetric
7" OD Driven Pulleys

SKU
Description
Price
Add to Cart
115505
DRIVEN 3/4" BORE MXT 7" OB
39.95

Max Torque Buttons

Max Torque Wear Plugs

SKU
Description
Price
Add to Cart
MT-TCDNWRPLG2
MAX TORQUE WEAR PLUG SET
18.50


Maintenance


All maintenance must be performed with the engine OFF. For the best results, all work should be performed prior to running the kart.

Maintenance will include proper cleaning and lubrication of the driver and driven bushings. This should be performed at least semi-annually. Weekly inspections of the three wear plugs is recommended before damage occurs to the driven pulley. Replacement of the wear plugs can prevent costly overhaul of the driven unit.

Belts do NOT stretch, they wear out from the sides. Keep the sheaves shiny and use a scotch guard pad or 220 grit sandpaper to get rid of any rust on the sheave to make the belt last longer. Rust will prematurely wear the belt. Once the top of the belt gets below 19/32 (.593) it should be replaced. A loose belt or a narrowed belt will damage the driven unit because the DRIVER will slam into engagement. You will not be getting the top speed from the kart any more and you run into the possibility of the belt getting stuck in the Driven Pulley. All torque converter belts must be cogged on the underside of the belt because they are turning a VERY tight circumference on the DRIVER unit which is only 1.175 in diameter at the powder metal bushing on the driver fixed sheave. -To properly lubricate the driver unit, it must be cleaned first. After disassembly, justwipe out excess dirt with a clean rag. After the driver unit has been cleaned, apply Max-Torque's dry lubrication to the angled lop of the weights, the four lobes of the spline, and the hub of the sheave where the bushing rides. Wipe any excess lubrication off the sheaves. Clean the driven unit at the same time you clean the driver. Use the same dry lubricant on the driven unit, the bushing, the spring, the ramps, and wear plugs. When placing the driven unit back on the jackshaft, only use the 2.7" key provided.

-Upon cleaning the driven unit, if the wear plugs appear worn or missing, they must be replaced. Failure to do this will result in the cam unwinding the spring.

-Keep the belt dry when running. Do NOT get oil or lubrication on the belt or the in-side of the sheaves where belt contact is made or excess slip will occur. Oil/lubrication must be cleaned off prior to using your kart or you will destroy the belt.

-Only use the belt provided, it has been designed to open the driven unit sheaves to the proper dimension for the highest speed range. If your belt shows signs of uneven wear, it may be due to the engine crankshaft and jackshaft not being aligned perfectly parallel.

-Your variable speed drive system should be mounted on parallel shafts - the driver on the engine crankshaft parallel to the driven on the jackshaft. In idle, the belt should be straight in the sheaves and square to the crankshaft and jackshaft. Do NOT Float the driver unit on the crankshaft. Only the driven unit floats on the jackshaft to align with the driver clutch as it attains the various speed ratios. The sprocket mounted on the jackshaft must be aligned parallel with the rear sprocket.

-Misalignment can cause damage to the chain. The driver unit must always be in neutral to move in reverse. Any backwards movement while your Variable Speed Drive System is engaged may cause damage, such as unwinding the spring in the driven unit, breaking the wear plugs or damaging the cams. This problem is not covered under The Max-Torque Factory Warranty.