plann C KIS
----- Original Message -----
From: "J.C. Hassall" <jhassall@blacksburg.net>
To: <fot@autox.team.net>
Sent: Sunday, July 30, 2006 2:33 PM
Subject: [FOT] TR4 Weber linkage with tubular headers
> Amici,
> My TR4 has tubular headers which interfere with the linkage I planned for
> the dual Webers with Canon manifolds. The manifolds have a boss on top to
> support a shaft and linkage to drive the butterflies; the rear manifold
> has a boss underneath to support a bellcrank. The setup is similar to the
> Moss setup at
>
><http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=29794&SortOrder=1>
> I planned to use a bellcrank under the carbs to translate horizontal
> accelerator arm motion to vertical to pull on an arm on the shaft mounted
> above the carbs. Problem is, one tube of the headers interferes with the
> bellcrank, so I only have about 1/4" travel. Fine if I don't want
> speeding tickets, but no fun to drive.
>
> Plan B is to fabricate a cable, perhaps from bicycle cable parts, but I'll
> have to fabricate a support tube to ensure that the cable pulls straight
> down. And of course add a return spring for safety.
>
> Plan C is to fabricate a spacer to stand off the the bellcrank from the
> manifold mounting boss by about 1.2", which should clear the manifold, and
> rely on the heim joints to accommodate all the angular mismatches.
>
> Anyone have suggestions for a better installation?
>
> TIA
>
> Jim
> --
> Jim Hassall
> Blacksburg VA
> jhassall@blacksburg.net
> '63 TR4 in autox preparation - 90% finished, 90% to go
>
>
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