You can definately get push-pull cable for throttle applications. I
have one in the Cheater TR3. Good stuff.
On Jul 30, 2006, at 12:09 PM, Tony Drews wrote:
> I've got webers, the cannon manifolds, headers and a working
> linkage. I'll take the air horns off and the heat shields off and
> send you some digital pics after it cools down a bit outside (it's
> close to 100 now and the garage A/C can't possibly deal with
> that). In my case, the lower bell crank is on the front manifold -
> are the front and rear manifolds the same (except for the boss)?
> Of course, your header may be different than mine.
>
> My linkage is a rod from the stock gas pedal bellcrank to the
> bellcrank below the front carb. Another link from bottom bell
> crank to upper linkage which attaches to both carbs - basically a
> rod with three bellcrank arms coming off - one for each carb, one
> for the link from the lower bell crank.
>
> I much prefer a linkage to a one-way cable 'cuz if something
> happens to make the carbs stick open I can get a foot under the gas
> pedal and pull it up (maybe). A dual cable system like on my
> motorcycle would allow this too. A good push / pull cable would do
> that as well, but I'm not sure if those are available for throttle
> applications.
>
> - Tony Drews
>
> At 01:33 PM 7/30/2006, J.C. Hassall wrote:
>> 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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>
>
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