STAR Machine
Accessory Drive Mandrel With Ø 5.2 V-Pulley
Part No: STR.04.07.000Retail Price
$305.00Manufactured from a combination of 7075-T6 and 6061-T6/651 aluminum our drive mandrel was designed to be rugged, reliable and versatile. Our drive mandrel is mounted directly to the face of the balancer (with or without a trigger wheel) eliminating the long bolt that retained both a mandrel and balancer to the crank shaft. Your balancer is now (reliably) retained by a separate bolt. The 1.250" hex drive nut/pulley retainer, manufactured from 7075-T6 aluminum and hard anodized, is splined to the mandrel shaft. With the positive engagement of a spline your engine can now be manually rotated in either direction, when valve or cam adjustments are required, without (inadvertently) loosening or over tightening the balancer retaining bolt.
Splined mandrels are not new, however they are often unique to each manufacturer requiring the use of ONLY that manufacturers "special" pulleys, spacers etc. The design of our spline allows the use of ANY pulley styles incorporating a Ø 1.000" bore with 0.125" keyway. You won't have to throw away your pulleys and spacers to upgrade to this mandrel.
The pulley mounting shaft portion of the assembly is manufactured from 7075-T6 aluminum and is anodized black and features a full length spline, keyway and tapped hole. You can easily shorten the mandrel to mount only the pulleys you require, without special tools.
The mandrel (upper right in picture) is sold complete with drive nut, shaft, one - 0.125" wide pulley flange, one - 1.87" long spacer sleeve, 1 - full length stainless steel key and 3 - 3/8"-16 X 1.50" L SHCS (stainless steel).
The Ø 5.20" V-belt pulley (lower left in picture) is manufactured from 6061-T6/651 aluminum and black anodized. The pulley bolts to the mandrel, and captured between the mandrel and balancer.
Pump drive pulleys sold separately. (Available L pitch tooth counts: 12, 14, 16 & 18 and 8MM pitch HTD tooth counts: 15, 16, 17 & 18)
Weather you have access to a lathe or not our shim kit will make the pulley positioning much easier. Allows movements of as little as 0.025".
Shim Kit (purchased with a mandrel) STR.04.07.XXXU = $33
Shim Kit (purchased separately) STR.04.07.XXX = $42
(Mass; Mandrel assembly as shown with hardware: 835g./1.84lbs.)
Splined mandrels are not new, however they are often unique to each manufacturer requiring the use of ONLY that manufacturers "special" pulleys, spacers etc. The design of our spline allows the use of ANY pulley styles incorporating a Ø 1.000" bore with 0.125" keyway. You won't have to throw away your pulleys and spacers to upgrade to this mandrel.
The pulley mounting shaft portion of the assembly is manufactured from 7075-T6 aluminum and is anodized black and features a full length spline, keyway and tapped hole. You can easily shorten the mandrel to mount only the pulleys you require, without special tools.
The mandrel (upper right in picture) is sold complete with drive nut, shaft, one - 0.125" wide pulley flange, one - 1.87" long spacer sleeve, 1 - full length stainless steel key and 3 - 3/8"-16 X 1.50" L SHCS (stainless steel).
The Ø 5.20" V-belt pulley (lower left in picture) is manufactured from 6061-T6/651 aluminum and black anodized. The pulley bolts to the mandrel, and captured between the mandrel and balancer.
Pump drive pulleys sold separately. (Available L pitch tooth counts: 12, 14, 16 & 18 and 8MM pitch HTD tooth counts: 15, 16, 17 & 18)
Weather you have access to a lathe or not our shim kit will make the pulley positioning much easier. Allows movements of as little as 0.025".
Shim Kit (purchased with a mandrel) STR.04.07.XXXU = $33
Shim Kit (purchased separately) STR.04.07.XXX = $42
(Mass; Mandrel assembly as shown with hardware: 835g./1.84lbs.)
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