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The Hymark Performance ball bearing clutch systems are the finest most durable and precise shifting driven clutch systems available! We continually test and refine our products 12 months out of the year. This insures that our customers get the very best products that money can buy.

What we have found through years of testing in the snow and running our dune buggies in the summer months in the sand is that in our near friction free ball bearing clutch systems, the helix angle selection is not near as important as the spring used. This is one reason that our spring selection is large and the reason for the reduction of helix angles manufactured for this 1998 snowmobile season. Another reason is that one can purchase five springs for the price of one helix and have greater tune-ability.

Through continued refinement and testing Hymark Performance has narrowed the helix selection to three basic helix angles, 45, 47.5 and 50 degree angles. We still have a large selection of helix angles available that are in inventory.

 

WE NOW HAVE TWO CLUTCH SYSTEMS FOR THE YAMAHA REVERSE CAM CLUTCH

1. BOLT-ON SYSTEM: This system is a completely bolt-on system. (There is no machining required.)
The system includes a helix, helix carrier, Three bearing carrier assemblies, and a spring.
This system is designed for 500cc snowmobiles and smaller.
2. MACHINED SYSTEM: This system requires you to send your secondary sheave to us for machining.
The system includes a helix, cover plate assembly, and a spring.
This system is designed for high horsepower sleds, or race applications.
 

HYMARK BALL BEARING CLUTCH SYSTEM
(Bolt-on system)

BEARING CLUTCH SYSTEM

Hymark Performance is now in the second year of production of our bolt-on ball bearing driven clutch system for the new Yamaha reverse cam clutch. Our bolt-on system for the Yamaha has under gone numerous changes to refine this clutch system. We have changed the helix cover by adding a radius between the towers to give added strength, this eliminated the cracking that could occur with highly modified engines. We have also tapered the bushing hub area that positions the inside of the spring. in order to eliminate spring binding, around the bushing hub. And we have also been refining the bearing carrier, From the pin design to the material being used. Continually trying to increase the roller clutch life on the higher horsepower sleds.
 

BALL BEARING CARRIER
(Bolt-on system)

The Hymark Performance ball bearing carriers for the Yamaha driven clutch are very unique in design. The bearing carriers are made of 4140 chrome molly and are zinc plated to prevent rusting. Ball bearings are installed in the bearing carriers by means of dowel pins. The bearing carrier assembly installs in the machined locations of the stock clutch where the original clutch buttons were located. Three bearing carrier assemblies are required per clutch.

88-SMBOO374A: Bearing Carrier Assembly

88-D2220-20PS: Replacement Bearings

 

YAMAHA HELIX CARRIER
(Bolt-on system)

The Hymark Performance helix carrier is machined from 6061 billet aluminum for precise balance and strength. This helix carrier allows one to mount our hardened steel helix to the stock clutch with no machining necessary. This Hymark helix carrier is red anodized to give the clutch a great looking appearance.

88-SMB00376: Helix Carrier

 

MACHINED ROLLER CLUTCH SYSTEM

Machined Roller Clutch Clutch cam and ramps
Hymark Performance is now producing a machined roller clutch system, for your high performance and race sled applications. In this system you can use our original single ramp helix or our new double ramp helix. The double ramp helix incapsulates the roller so that when you grab the brake hard or come off a jump, the clutch never slams open and closed. This eliminates the chance of the roller losing contact with the helix thus making the clutch even more sensitive and faster reacting.

With this system you will need to send the secondary sheave to us for machining. We will machine the sheave so that you can bolt our hardened steel radiused helix to your sheave. Then you merely install the spring, position the cover assembly over the three bolt towers and tighten the nuts. With our new cover you now have even more spring tune-ability, with the three original spring holes in the sheave and the five new holes in the cover assembly.

 

YAMAHA COVER ASSEMBLY
(Machined system)

The Hymark Performance cover assembly is machined from 6061 billet aluminum for precise balance and strength. The cover comes complete with the bearings and bushing installed. This cover allows you to bolt our single or double ramp helix onto your Yamaha machined sheave. The Hymark cover assembly is black anodized, with silver lettering to give the clutch a rich looking appearance.

88-SMB00407: Cover Plate Assembly

Maching Yamaha Sheave

 

YAMAHA HARDENED STEEL RADIUSED HELIX

The Hymark Performance helix is a hardened steel single point contact radius helix. A roller bearing clutch must have a radiused surface for the roller bearing to contact. This will ensure center contact of the roller bearing surface throughout a variety of helix angles. Hymark Performance has developed a series of helix profiles with our patented radiused contact surface. These helix are machined from high quality steel and heat-treated to near bearing hardness. Even though the radiused helix is made of high quality steel, the special design adds only ounces to the driven clutch. These helix are designed to last a lifetime.

88-A/C45: Helix

88-A/C47.5: Helix

88-A/C50 : Helix

88-AC/YAM45 : Double Helix

88-AC/YAM47.5: Double Helix

88-AC/YAM50 : Double Helix

NOTE: Other helix angles available upon request.

 

YAMAHA HELIX APPLICATION CHART

88-AC/YAM50 Degree Helix 0 TO 4000 ft. elevation
88-AC/YAM47.5 Degree Helix 4000 TO 8000 ft. elevation
88-AC/YAM45 Degree Helix 8000 TO 12000 ft. elevation
NOTE: Three bearing carriers, one helix carrier,one helix, one shim pack and one spring are required per clutch.
 

HYMARK DRIVEN CLUTCH SPRINGS

DRIVEN CLUTCH SPRINGS

Hymark Performance has developed several new springs for our ball bearing clutch systems. We have also developed spring torque charts and spring compression charts in order for one to more fully understand which spring or springs would be desired. In most of the new Yamaha driven clutches, we would recommend the use of our 88-HY201W spring or the 88-HY192Y spring.

88-HY188P: Spring .188"  wire diameter

88-HY192Y: Spring .192"  wire diameter

88-HY201W: Spring .201"  wire diameter

88-HY206G: Spring .206" wire diameter

Compression Graph Rotation Graph
 
Snow West Distribiting Inc.
4291-95 St.
Edmonton, AB. T6E 5R6
Telephone: (780) 436-8888
e-mail:
sales@snowwest.ca

You May Also Visit Us At
www.snowwest.ca
Snow West Distributing Inc.
Copyright 1998-2003 
All rights reserved.
All Pictures Used 
for Reference only.