Switch Pitch TH-400 (was something else)

Guenther,Max Mguenther at ASCO.COM
Mon Jan 25 18:09:30 GMT 1999


As for control I just used a cheap micro switch.  looked cheesy but
works great! 

>----------
>From: 	Shannen Durphey[SMTP:shannen at grolen.com]
>Reply To: 	diy_efi at efi332.eng.ohio-state.edu
>Sent: 	Monday, January 25, 1999 11:56 AM
>To: 	diy_efi at efi332.eng.ohio-state.edu
>Subject: 	Re: Switch Pitch TH-400 (was something else)
>
>Gwyn Reedy wrote:
>> 
>> Coupla questions.
>> 
>> Does any aftermarket vendor provide custom stall ratios on the variable
>> pitch converters?
>> 
>At one time Kenne Bell did.  Looks like rebuilt/strengthened factory
>converters, two styles.  1800/2600 rpm, and 1600/2400 rpm stall
>speeds.
>Kenne Bell, 10743 Bell Court, Rancho Cucamonga, California 91730;
>(909) 941-6646.
>
>> What mechanism is used to control the pitch switch? Could that be adapted
>>to
>> allow control of the clutch in a locking converter?
>> 
>Old stuff, used in 65-67 Buick and Olds.  Mechanical switches close
>circuit, switches to high stall at idle, and at 70%+ throttle
>opening.  Electrically, it's opposite the TCC.  Original switches and
>linkage are tough to locate, might as well use a manual switch.
>
>> Gwyn Reedy
>> Brandon, Florida
>> mailto:mgr at mgrcorp.com
>> 
>> > -----Original Message-----
>> > From: owner-diy_efi at efi332.eng.ohio-state.edu
>> > [mailto:owner-diy_efi at efi332.eng.ohio-state.edu]On Behalf Of Greg
>> > Hermann
>> > Sent: Sunday, January 24, 1999 10:50 PM
>> > To: diy_efi at efi332.eng.ohio-state.edu
>> > Subject: Re: DFI, Batch Fire, and other myths
>> >
>> >
>> >
>> > >
>> > >Was just thinking yesterday that the switch pitch converter should be
>> > >connected to tcc control , and detent solenoid should remain manual
>> > >control.  BTW, 350 Buick HEI works, but must use drive gear from 455
>> > >points dizzy.
>> >
>> > Ahh--dangerous thoughts, and hardware that gets forgotten--Anybody know
>>of
>> > any experience racing with switch pitch TH-400's????  Or whether such an
>> > idea ever got tried with turbo motors??? :-) (Like switching the pitch to
>> > let it rev up into the boost QUICKLY???)
>> >
>> > Regards, Greg
>> > >
>> > >Shannen
>> >
>> >
>
>



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