A RUSTY RESCUE

Peter Rooke finishes a tough IHC restoration project – Part 3 of 3

| April 2008

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    The new pushrod alongside the old one.
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    The new cam follower and shaft alongside original rusted parts.
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    Peter Rooke’s latest project, now fully restored, a 1920; 3 HP IHC Model M.
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    The repaired grease cup showing clean lines and no connector.
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    The governor ring and fork viewed from the back.
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    The governor weights and support frame.
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    The filing guides for governor link.
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    The finished and part- finished axle and stubs.
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    The assembled wooden skid for cart.
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    The magneto blanking plate after brazing ring.
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    A homemade drip feed oiler.
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    The bracket and pivot of new turntable
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    The main casting after fill and priming
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    The cleaned main casting
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    Using stencil to paint the name on the wooden skids.
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    One last look at what Peter started with.
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    The replacement decal showing masking tape with center lines to align it.
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    The painted main casting ready for assembly.
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    Draw filing flywheel key.

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  • 04-08-004-3_10-Transp.jpg
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  • 04-08-004-3_3-Trans.jpg
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  • 04-08-004-IHC1.jpg
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Editor's note: In the December/January issue, we began a three-part feature on Peter Rooke's latest restoration project. We conclude below with Part 3.

Pushrods and trips

All pushrods and trips had either been sawn through during disassembly or were in need of replacement; easy threading exercises.

The replacement hardened steel roller for the cam follower and its pivot were made out of drill rod. When drilled and turned to the correct dimensions the roller was hardened by heating to cherry red then quenched in brine. It was then tempered by heating to 340 to 390 degrees Fahrenheit (a yellowish color) and then held at this temperature for 10 minutes before being allowed to cool slowly.

The exhaust pushrod and ignitor trip required simple turning and fabrication tasks to copy the originals.



The follower arm for the eccentric strap was cleaned, and the rod and locking bolt threads were cleaned with a tap. A new retaining plate, screws and gib key were needed as they were missing or damaged.

Governor

There are several components to the governor in addition to the rod and butterfly beneath the mixer.



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