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Combine Slip Clutch
It can cost as much as $5,000 to repair the straw walkers and cranks on 914 and 915 IH combines if the warning horn fails to warn of a build-up on the walkers. When that happened to Erland Sten, Meadow Lake, Sask., he sat down and designed a slip clutch for the straw walker's direct drive.
The problem with the pull-type 914, and self-propelled 915, is that the walkers are direct-driven by chain off the beater shaft, unlike most modem combines which have a belt drive. If the walkers plug up, and the warning horn fails to sound, all five walkers and both cranks can be easily destroyed Sten's fiber disk slip clutch installs with no modification. It can be adjusted to develop enough torque to run the walkers but not enough to collapse them and twist the cranks.
Sten sells his add-on clutch kit for $300 (Canadian).
For more information, contact: FARM SHOW Followup, Erland Sten, Box 148, Meadow Lake, Sask. S0M 1V0 Canada (ph 306 236-5549).

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1987 - Volume #11, Issue #5