Ah, you?re thinking that the integrated solenoid makes the starter gear engage.
no, it?s just a high-current relay?functionally identical to the separate
solenoid the old Luca unit uses. I can?t think of a purpose to have a second
solenoid?don?t know why they call that particular relay a Solenoid . The bendix
engages by drag on a helical actuator. Purely mechanical in every starter I?ve
ever seen.
> On Mar 26, 2017, at 5:18 AM, Duncan Charlton via Fot <fot at autox.team.net>
> wrote:
>
> Your?re right ? what I meant to say was that I shorted from the terminal with
> the incoming heavy lead to the small terminal that has the starter switch
> lead on it. That activates the solenoid rather than bypassing it, which
> likely simply spins the starter motor and doesn?t move the bendix.
>
> Duncan Charlton
> Elgin, Texas USA
>
>
>
>>
>> If you short across the big terminals you eliminate the integrated solenoid.
>>
>> I have seen people bypass the integrated solenoid and use an external one,
>> but my experience with the gear reduction starters is that they fail in the
>> connection to the field coil, and rarely anywhere else.
>>>
>>> Unless?
>>>
>>> We?ve had two cars that had starting problems that were cured by using a
>>> second solenoid. The actual problem with both was most likely due to a
>>> voltage loss between the battery, the ignition switch and the starter
>>> solenoid.
>>>
>>> The Ford solenoid requires very low voltage (something like 2 volts) to
>>> engage, whereas the one on my (German) Opel 1900 and the one on the 1978
>>> Datsun 280Z clearly required a lot more. I could short across the big
>>> terminals to get the car to start, so I knew the starter motor and the
>>> integrated solenoid were both good.
>>>
>>> Duncan Charlton
>>> Elgin, Texas USA
>>>
>>>
>>>
>>>>
>>>> Are you guys not using the gear reduction starters? The built in solenoid
>>>> in the starters is a very reliable part. If you?re using a solenoid to
>>>> activate the solenoid, I think you have one too many.
>>>>
>>>>
>>>>>
>>>>> Napa auto parts has a part number ST51.
>>>>>
>>>>> We went with as an emergency repair to replace a broken Lucas at the
>>>>> track on a Sunday. They were the only ones in the town open that had
>>>>> anything. The counter person spent an hour researching what they had that
>>>>> would work. It works. Very reliable.
>>>>>
>>>>> I think its actually for 60's era Ford trucks. The Tr4 does not seem to
>>>>> mind or be insulted by it any way.
>>>>>
>>>>> Good Luck,
>>>>>
>>>>> Paul
>>>>>
>>>>> Sent from my iPhone
>>>>>
>>>>>
>>>>>> I replaced my Lucas unit (with button) with one from the local Farm and
>>>>>> Fleet. Has been dead reliable for 15 years.
>>>>>>
>>>>>> Tony Drews
>>>>>>
>>>>>> At 02:08 PM 3/25/2017, Bob Totten via Fot wrote:
>>>>>>> Group wisdom on Starter Solenoids for our Triumph's ?
>>>>>>>
>>>>>>> Who sells the better quality Lucas (?) units as my starting problem has
>>>>>>> pointed to the solenoid is not functioning properly. Would also be
>>>>>>> interested in learning about any alternative brand that would be better
>>>>>>> in the long run. In 20 years of running my Spit my 5th unit is on the
>>>>>>> fritz or is that the life span for these things?
>>>>>>>
>>>>>>> Curious,
>>>>>>>
>>>>>>> Bob T
>>>>>>> '64 Spit GT autocrosser
>>>>>>>
>>>>>>> PS I have inspected and tested the starter, and had it tested at the
>>>>>>> local Advance Auto Parts and it functions just fine(?).
>>>>>>> _______________________________________________
>>>>>>>
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>>>>
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>
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