Manco Dingo Go Kart

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Comet 30 Series

Torque Converters 3-8hp

Comet 30S Driver

Genuine Comet 30
Series Driver Clutches

SKU
Description
Price
Add to Cart
219552A
DRIVER 3/4" BORE 30
74.50

219554A
DRIVER 1" BORE 30
84.50

Genuine Comet Clutches are available in 3/4" Bore or 1" Bore and use an Asymmetric, 3/4" Top Width Belt. 4-19/32" Outer Diameter. The driver clutch bolts firmly to the engine crankshaft and must not float. Engages at approx 2200 RPM - Max. 3100 RPM. These black components are the newest design available. Comet 219552A is the most popular go kart torque converter clutch in the United States. Large Inventory, Fast Shipping.

Comet 30S Drivens

Genuine Comet 30
Series Driven Pulleys

SKU
Description
Price
Add to Cart
219456A
DRIVEN 5/8" 30S 6"
72.50

219465A
DRIVEN 3/4" 30S 6"
72.50

219457A
DRIVEN 5/8" 30S 7"
72.50

219464A
DRIVEN 3/4" 30S 7"
72.50

The Black 30 Series Driven Pulleys with Snap-in Buttons are Comet's latest design. Available in 5/8" Bore and 3/4" Bore, with a Choice of 6" or 7" Outer Diameter. The Comet 30 Series uses an Asymmetric, 3/4" Top Width Belt. Green Tension Spring and Tan Snap-in Buttons. Mount with the Tension Spring facing away from the engine.


Models with Comet 30
Series Torque Converters


Manco Go Karts with Tecumseh Engines or Robin Subaru Engines ("L" shaped Foot Pedals w/3 Holes). Manco Dingo Go Kart Model 285 and 286. Manco Fox Go Kart Model 485, 486, 606 and 806. Manco 6hp Big Cat Mini Bikes with Tecumseh Engines and Huge ATV Wheels. Manco Driver Clutch Part #5957. Masters of Motion Go Karts with Tecumseh Engines (Fort Wayne, IN). Murray Go Karts with Tecumseh Engines, Murray Driver Part #680167 and #1201404. Kartco and Road Boss Go Karts with Tecumseh Engines (Made in Mississippi). Avenger Yellow Jacket Go Karts with Tecumseh Engines (Made in Louisiana). Carter Brothers Go Karts with Asymmetric Torque Converters and Tecumseh Engines. Hammerhead Mudhead Driver Clutch Part #9.500.010 and Driven Pulley #9.500.001. Hammerhead 80T Driver Clutch Part #9.500.010 and Driven Pulley #9.500.001. Brister's ThunderKart Go Karts with Tecumseh Engines (Made in Louisiana in the 90's). 200cc Trailmaster Mid XRX Go Karts, Klipper Go Karts, ProKart Go Karts, Ken Bar Pathwinder Go Karts and Streaker Go Karts under 8 horsepower, Tecumseh Engines. Trailsport Buffalo Mini Bikes with bolt on, Comet Torq-A-Verter Kits (TAV2). BKS (Bob's Kart Shop) Groundhawg LX and BKS Kangaroo LX Go Karts. Yerf-Dog Go Karts with Tecumseh Engines, Yerf Dog Go Kart Model #1400, 3002, 3200, 3202, 3203, 3203A, 3205, 30021, 30034A, 32001, 33002 and 33200.

The Black and Silver Components on
this page are compatible and can be mixed.
JII CLUTCH 30S

Asymmetric 1" Bore Clutch

SKU
Description
Price
Add to Cart
G3100
DRIVER 1" BORE G3
33.50

High Quality 1" Bore
Asymmetric Driver Clutch

Ronghai 30 Clutch

Asymmetric Driver Clutches

SKU
Description
Price
Add to Cart
115490
DRIVER 3/4" BORE G3
39.95

115491
DRIVER 1" BORE G3
39.95

Available in 3/4" and 1" Bore.
Uses a 3/4" Top Width Asymmetric Belt.

Asymmetric Driven

Asymmetric Driven Pulleys

SKU
Description
Price
Add to Cart
G3200
DRIVEN 5/8" 30S 6"
29.50

G3300
DRIVEN 3/4" 30S 6"
29.50

G3600
DRIVEN 3/4" 30S 7"
39.50

Available in 5/8" or 3/4" Bore.
Choice of 6" or 7" Outer Diameter.
Green Tension Spring - Black Glue in Buttons.


Comet Torque Converter


General Information


Comet 30 Series Dimensions


Engages at 2200 RPM - Max 3100 RPM


How does a torque converter work? The drive clutch is activated by centrifugal force from the engine crankshaft. The moveable sheave of the clutch is forced in as the RPM of the engine is increased. This contacts the drive belt. The drive belt will then be forced to a larger diameter within the clutch sheaves, thus pulling it to a smaller diameter within the driven unit sheaves. The moveable sheave of the driven unit is forced out, allowing the belt to seek it's smaller, high speed ratio diameter. As this happens, the speed from the engine transferred to the final drive is increased.

The asymmetric torque converter components use a 3/4" top width belt. The belt mass is desirable in applications requiring extra rugged driving ability, such as dune buggies, go karts, mini bikes, ATV's, grounds maintenance equipment, materials handling devices and industrial equipment. It's mounted with both stationary sheaves inboard requiring only minimum displacement. All the working parts are on one side.

The asymmetric type torque converter system has sheave faces that have different angles. It uses a belt that's flat on one side and angled on the other. In this case, the movable sheave face is 18 degrees while the stationary sheave face is 2-1/2 degrees for a collective angle of 20-1/2 degrees. By having both the driver clutch and driven pulley fixed sheave faces on the same side (inboard) the system can be mounted on a fixed plate, in the same plane. See the 30 Series TAV2 Complete Kits. This offers some very significant advantages to mounting requirements in many cases. Noting the displacement diagrams you will see that the torque sensing cam assembly is mounted outboard adding further to the convenience of many installations with displacement problems. The asymmetric concept, having the 18 degree angle on one side requires less sheave face travel to lift the belt to larger, comparable pitch diameters of the symmetrical system. This makes it possible to force the belt to a diameter within the drive clutch (at high RPM) that exceeds the usual 1:1 ratio of standard systems. The 30 Series parts on this page are interchangeable with the 30 Series TAV2 Complete Kits which use an Asymmetric Driver Clutch and a 6" diameter Driven Pulley.

The spring and flyweight assembly in the driver clutch actuates the movable sheave and responds to engine RPM and should be replaced if the pins or springs are even slightly loose. If they are not VERY tight the loose pins and springs will prevent the pulley from disengaging. If your machine tries to take off by itself you may need to replace this part. Other problems that could be causing the system to be engaged all the time: dirty components with a lack of lubrication, worn out splined hub, the drum not correctly installed or a weak spring in the driven pulley.

Comet 30 Series Clutch
1" Bore Clutches don't use a Bronze Bushing.
Outer Cover

Outer Drum for
3/4" Bore Clutch

SKU
Description
Price
Add to Cart
219204A
OUTSIDE DRUM 3/4
15.50

Flyweight Assembly

Spring & Flyweight Assy.

SKU
Description
Price
Add to Cart
115592
SPRING AND FLYWEIGHT
8.50

If this part is bad, the clutch stays engaged all the time.

Flyweight ASW14700

Moveable Sheave with
Spring & Flyweight Assy.

SKU
Description
Price
Add to Cart
14700
MOVEABLE SHEAVE FLYWEIGHT ASSY
34.50

Splined Hub

Comet Splined
Hub for 3/4" Clutch

SKU
Description
Price
Add to Cart
200376A
SPLINED HUB 3/4
8.50

Fixed Sheave 14698

Fixed Sheave
for Driver Clutch

SKU
Description
Price
Add to Cart
14698
FIXED SHEAVE
19.40

Bronze Bushing

Bronze Bushing for 3/4" Clutch

SKU
Description
Price
Add to Cart
115593
BRONZE BUSHING 20/30
2.50

The belt rides on this bushing. For 3/4" only.

Driven Snap Ring

Driven Pulley
Snap Ring

SKU
Description
Price
Add to Cart
G00120
RETAINING RING
5.50

Driven Spring

Comet Tension Spring

SKU
Description
Price
Add to Cart
215699A
GREEN SPRING 30S
6.50

This Spring Must Be Pre-Loaded.
Read the Installation Instructions!


Tension Spring
Installation Instructions


Adjusting the spring tension on the driven pulley changes the rpm range at which the unit shifts into high gear. The three numbered holes on the cam are used to change the spring tension. Hole #1 provides the least tension and allows the unit to shift gears at a lower rpm. This is good for flat ground. Hole #3 provides the most tension and allows the unit to shift gears at a higher rpm. This is good for hilly terrain. Hole #2 is the factory setting providing medium tension good for the most common riding conditions.

You must pre-load the spring when installing it into the driven pulley. After placing the end of the spring in the desired hole and aligning the flat spots in the center of the cam with the flats on the post, just before pushing the cam all the way on to the post, turn the movable sheave clockwise -- tightening the spring -- bringing the buttons past the points of the cam and into the next valley. While holding tension on the spring, push the cam all the way on to the post and secure it with the snap ring. When you release the movable sheave the spring should rotate it counter-clockwise until the plastic buttons press against the cam. The insert buttons must not "float" between the cams.

The "20" stamped on the cam indicates that it is a 20 degree cam, not that it is a Series 20 torque converter. The 20 degree cam is used on both the 20 and 30 Series torque converters. One way to tell the two apart is to look at the angle of the pulleys. On the 20 Series, both pulley sheaves have the same angle. On the 30 series, the sheave toward the motor is nearly flat while the opposite sheave is angled.

Insert Buttons

Set of 3 Genuine
Comet Insert Buttons

SKU
Description
Price
Add to Cart
204332A
INSERT BUTTONS
4.00

For Driven Pulleys that use 6 Black Buttons.
Glue in with Contact Cement or equivalent.


The insert buttons must be in place at all times. Don't run the system if any of the buttons are missing. Missing buttons will allow the driven pulley to open too far, and the belt will go down into an area of the pulley where it's not supposed to go. If the belt comes in contact with the rivets, it usually damages the belt. In addition, the buttons also keep the movable sheave from spinning, they reduce friction between the cam and the movable sheave and they prevent metal to metal contact, acting as shock absorbers so they play an important role.

Maintenance will include proper cleaning and lubrication of the driver and driven. Inspect the torque converter on a regular basis for dirt, frayed belts and any other potential problem obvious from a visual inspection. Always service units before each season. Maximum service interval recommended is each 50 hours of operation.

Drive and driven pulleys should be parallel. Friction faces must be smooth and free of dirt, corrosion, oil or grease. Belt must be dry, straight, and free of cracks, breaks and uneven wear. Operating the vehicle in a dusty environment will require more frequent servicing.

Use Comet Dry Film Lubricant in all models of Torque Converters.

Indicators of a torque converter system requiring cleaning and lubrication are erratic or jerky engagement upon acceleration and a tendency to apparently "lock" into a particular speed (a second cause of jerky engagement is an excessively loose drive chain). If either one of these conditions exist service the unit immediately. Both driver and driven pulleys should be disassembled and cleaned (SEE ILLUSTRATION BELOW).

C = CLEAN - L = LUBRICATE


Visit the Trouble Shooting Page for more information on malfunctioning Torque Converters. Belts eventually wear over time but a damaged or torn up drive belt always indicates that a problem exists with the system. Only replace your drive belt after the problem has been corrected. Components must be clean, lubricated and perfectly aligned to function properly.

Early Manco 5-6hp
Torque Converter Breakdown


If you own an early model Manco 5 or 6 horsepower go kart powered by an Asymmetric Torque Converter click here to view the assembly sequence of your drive system. This is the old style Manco Factory set up that used a thick plastic cover that snaps down over two arms that stick out. The torque converter cover style and cover hardware may vary on later models, but the mounting plate, jackshaft, bearings and components are all the same. If your Manco brand kart is equipped with a 12 tooth jackshaft sprocket, you have #35 chain. If your Manco brand kart has 9 tooth jackshaft sprocket, you have #420 chain.

How do Asymmetric
Torque Converters Work?


As the engine R.P.M. increases, the Driver pulley flanges continue to close together. This action, in turn, is squeezing the belt out to a larger diameter. This action is dependent on acceleration and lack of torque load on the Driven element, allowing it's pulley flanges to open thus creating a smaller driven unit diameter. If the torque load is increased this ratio is reversed instantly and smoothly to it's requirement. The ratios between low and high are infinite to meet all demands within it's realm of capabilities.

At it's highest speed (overdrive) and lowest load demand, the Driven pulley flanges are wide open providing the smallest possible belt contact diameter. The Drive unit pulley flanges, at this point, are closed to provide the largest possible belt contact diameter. The unique asymmetric arrangement of the belt and pulley angles allow the belt to exceed diameters possible with the standard "V" pulleys, thus overdrive.

Comet 30 Series Belt Chart

SKU

Center Distance

Size

Part
Number

6" Driven
Pulley

7" Driven
Pulley

OC
Length

203589A
994-70

6 5/8 to 6 11/16

NO FIT

27-1/32

203590A
994-75

7-1/8 to 7-3/16

6-1/4 to 6-5/16

28-21/64

203591A
994-80

7-9/16 to 7-5/8

6-13/16 to 6-7/8

29-9/32

203592A
994-85

8-3/16 to 8-1/4

7-5/16 to 7-3/8

30-15/64

203593A
994-90

8-11/16 to 8-3/4

7-3/4 to 7-13/16

31-15/64

203594A
994-95

9-3/16 to 9-1/4

8-5/16 to 8-3/8

32-13/64

203595A
994-100

9-5/8 to 9-11/16

8-3/4 to 8-13/16

33-11/64

203596A
994-105

9-15/16 to 10

9-3/16 to 9-1/4

33-25/32

203597A
994-110

10-3/4 to 10-13/16

9-13/16 to 9-7/8

35-9/64

203598A
994-120

11-11/16 to 11-3/4

10-15/16 to 11

37-7/64

203599A
994-130

13-1/16 to 13-1/8

12-1/8 to 12-3/16

39-25/32

Comet Torque Converter Belts


Factory Authorized Distributor