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From: dsi1 on 30 Nov 2009 21:20
Wayne wrote:
> "Mike Hunter" <Mikehunt2(a)lycos,com> wrote in message
> news:4b13ea12$0$7186$ce5e7886(a)news-radius.ptd.net...
>> WHAT, you were kidding, when you wrote, " When pushing down hard, I popped
>> the end off the cable, and the cable was spring loaded to FULL throttle."
>> right?
>>
>>
> -
> Nope. A 69 vette being driven from the show room floor to my home. There
> was a cheap-assed plastic ball on the end of the cable, with a pair of
> fingers from the pedal mechanism hooked under the ball. A quite thrilling
> ride trying to get the engine stopped.

What he's saying is that carburetors have their throttles spring-loaded
so that when you release the foot pressure on the accelerator, the
throttle will close - a desirable mode of operation. I have to concur
with small detail. Could you have been missing the throttle return
spring? :-)
From: Nate Nagel on 30 Nov 2009 21:27
dsi1 wrote:
> Wayne wrote:
>> "Mike Hunter" <Mikehunt2(a)lycos,com> wrote in message
>> news:4b13ea12$0$7186$ce5e7886(a)news-radius.ptd.net...
>>> WHAT, you were kidding, when you wrote, " When pushing down hard, I
>>> popped the end off the cable, and the cable was spring loaded to FULL
>>> throttle." right?
>>>
>>>
>> -
>> Nope. A 69 vette being driven from the show room floor to my home.
>> There was a cheap-assed plastic ball on the end of the cable, with a
>> pair of fingers from the pedal mechanism hooked under the ball. A
>> quite thrilling ride trying to get the engine stopped.
>
> What he's saying is that carburetors have their throttles spring-loaded
> so that when you release the foot pressure on the accelerator, the
> throttle will close - a desirable mode of operation. I have to concur
> with small detail. Could you have been missing the throttle return
> spring? :-)

ISTR that some carbs did not have integral throttle return springs, so
that if the return spring were hooked to the linkage and not to the carb
itself, and the linkage fell off the carb, that the engine's
vacuum/airflow would pull the throttle plates open.

I agree that installing a spring within the carb itself to keep the
throttle plates shut, or at least hooking the return spring to the
carb's bellcrank and not the linkage attached to it, is quite a Good
Thing(tm)

nate

--
replace "roosters" with "cox" to reply.
http://members.cox.net/njnagel
From: dsi1 on 30 Nov 2009 22:46
Nate Nagel wrote:
> dsi1 wrote:
>> Wayne wrote:
>>> "Mike Hunter" <Mikehunt2(a)lycos,com> wrote in message
>>> news:4b13ea12$0$7186$ce5e7886(a)news-radius.ptd.net...
>>>> WHAT, you were kidding, when you wrote, " When pushing down hard, I
>>>> popped the end off the cable, and the cable was spring loaded to
>>>> FULL throttle." right?
>>>>
>>>>
>>> -
>>> Nope. A 69 vette being driven from the show room floor to my home.
>>> There was a cheap-assed plastic ball on the end of the cable, with a
>>> pair of fingers from the pedal mechanism hooked under the ball. A
>>> quite thrilling ride trying to get the engine stopped.
>>
>> What he's saying is that carburetors have their throttles
>> spring-loaded so that when you release the foot pressure on the
>> accelerator, the throttle will close - a desirable mode of operation.
>> I have to concur with small detail. Could you have been missing the
>> throttle return spring? :-)
>
> ISTR that some carbs did not have integral throttle return springs, so
> that if the return spring were hooked to the linkage and not to the carb
> itself, and the linkage fell off the carb, that the engine's
> vacuum/airflow would pull the throttle plates open.
>

I did not know this - all the ones I've owned had this feature. I guess
this was before my time. Thanks!

> I agree that installing a spring within the carb itself to keep the
> throttle plates shut, or at least hooking the return spring to the
> carb's bellcrank and not the linkage attached to it, is quite a Good
> Thing(tm)
>
> nate
>
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