[DeTomaso] Cable Shifter

[David]

So I'm not the only one.  I let my son in law drive and when he got back we couldn't get reverse anymore and had to adjust again.   My view was the fore / aft adjustment is pretty robust,  but side to side is not so as the locking nut on the turnbuckle is the only thing keeping that in check.   I replaced the rubber bushing that holds the first long rod with a delrin bushing and liked the feel but still have trouble keeping it in adjustment. 

I believe the problem with cable is that your tension and compression play is a function of preload on the differential between the cable and the cable housing ( and how much the stretch or comments.press)  which makes it pretty hard to take all the play out,  especially under thermal cycling.   

On thought...  How about applying your talent to replacing the turnbuckle on the stock linkage with a finely adjustable left / right mechanism.   I'd buy one. :-) 

David 

gow2 at rc-tech.net wrote:

>In dissecting the Pantera shift assembly it really is a robust unit. I
>have never been a fan of how it is adjusted. When I was adjusting mine, I
>would get it perfect, tighten it up. After tightening it up it was again
>off just enough to be cumbersome which is why so many people cut off their
>shift gates.
>
>I had the rod shift away from home a couple times and got in the habit of
>keeping wrenches to re-tighten it on the road.
>
>I had considered making a better adjustable connection to replace the
>turnbuckle but I am going down the cable shifter path right now.
>
>
>
>> I'm not sure why this is, but I suspect it just has to do with moving more
>> "stuff". ( Cables in conduits, bellcranks, lever arms, etc ) With the
>> traditional shift rod actuation, the fore-aft and rotational movement of
>> the shifter results in a direct and immediate movement of the actuator at
>> the selector box of the ZF.
>>
>>
>>
>>
>> -----Original Message-----
>> From: gow2 <gow2 at rc-tech.net>
>> To: Damaadams <damaadams at aol.com>
>> Cc: kirby.schrader <kirby.schrader at gmail.com>; gow2 <gow2 at rc-tech.net>;
>> detomaso <detomaso at realbig.com>
>> Sent: Fri, Aug 31, 2012 3:28 pm
>> Subject: Re: [DeTomaso] Cable Shifter
>>
>>
>>
>>
>> Can you pinpoint why? IS it flex in the cable itself?
>>
>>> I'm with Kirby here. I have the cable shift in my Superformance GT40 as
>>> well. It's an improved version engineered by Dennis Olthoff, but it's
>>> still just a tad vague when compared to the more positive feel of the
>>> shifting in my Mangusta. (Never thought I'd hear myself say that.)
>>> ?
>>> Daryl Adams
>>>
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: Kirby Schrader <kirby.schrader at gmail.com>
>>> To: gow2 <gow2 at rc-tech.net>
>>> Cc: detomaso <detomaso at realbig.com>
>>> Sent: Thu, Aug 30, 2012 7:43 am
>>> Subject: Re: [DeTomaso] Cable Shifter
>>>
>>>
>>>
>>>
>>> Didn't we beat this horse up some time ago?  :-)
>>>
>>> I have a cable shifter in my GT40. It works OK, but I'd love to have the
>>> rod shifter that's in the Pantera in the GT40.
>>>
>>> Rod shifters are easier to adjust and must more positive when shifting.
>>> At least, that's true of my cars and, of course, that is my opinion.
>>>
>>> FWIW,
>>> Kirby
>>>
>>> On Thu, Aug 30, 2012 at 7:38 AM, <gow2 at rc-tech.net> wrote:
>>>
>>>> I a playing with building a cable shifter. Anyone ever mess with it?
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>
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