[Rovernet] Starter trouble

[Michael Pellow]

Hi as a piece of general advice on all P6 and SD1 cars that can improve 
their starting.

I have had a few in my time P6 & P6's and found that adding an extra 
earth strap between the block and the body improves the cranking 
speed.It seems that the original strap across the engine mount becomes 
less effective over the years.
In the case of the SD1's the contact between the body and the Neg 
terminal becomes resistive.

On the 2000's a strap from the block to the earth terminal of the 
battery and on the V8 a strap between the block and body .To make sure a 
good connection I sanded back on the body and covered it with grease to 
stop any corrosion.
This improves both the cranking speed and charging .

As a way to confirm this would help & prove that original strap is not 
functioning properly; measure the voltage between the block and the body 
while cranking the motor ,any voltage will suggest that there is some 
resistance so strap will help.

On 25/07/2018 3:48 p.m., Tom Rymes via Rovernet wrote:
> Geff,
> 
> A pre-engaged starter like that should have the solenoid push the gear out
> to mesh with the flywheel, then engage the motor to spin. It sounds like
> maybe it's only doing the latter.
> 
> Or at least I think that's the case. Hopefully someone who knows more will
> confirm.
> 
> Tom
> 
> On Tue, Jul 24, 2018, 11:35 PM Geff McCarthy via Rovernet <
> rovernet at rovernet.org> wrote:
> 
>> Umm...since we are analyzing starters: My 70 3500S began to be reluctant
>> to start; it would click 3-4 times then finally engage and start. Someone
>> suggested the solenoid was bad. New solenoid in, and now I hear only a
>> spinning noise, no click, no engagement.  Help!!!
>>
>> Geoffrey W. McCarthy MD MBA DipAvMed
>> 677 NW Melinda Ave
>> Portland OR 97210
>> 503-241-8468 (h)
>> 503-799-3809 (m)
>>
>> -----Original Message-----
>> From: Rovernet <rovernet-bounces at rovernet.org> On Behalf Of Steven Dibdin
>> via Rovernet
>> Sent: Tuesday, July 24, 2018 6:12 PM
>> To: Rovernet <rovernet at rovernet.org>
>> Cc: Steven Dibdin <sdibdin at gmail.com>
>> Subject: Re: [Rovernet] Starter trouble
>>
>> Looking at the marks on the pinion (right way round btw, not sure if it’s
>> even possible to reverse it) it looks like it’s not even fully engaging
>> with the ring gear.
>>
>> I rebuilt my starter last year. It was still slow afterwards. It was only
>> then I realized the battery terminal clamp was getting hot. The part that
>> clamps down onto the cable was tight, but the strands of copper on the
>> cable were heavily corroded under the insulation. I cleaned them, applied
>> Vaseline and reassembled. All good after that. Jut a thought.
>>
>> Sent from a small screen, please excuse any typos.
>>
>>> On Jul 24, 2018, at 21:06, Tom Rymes via Rovernet <rovernet at rovernet.org>
>> wrote:
>>>
>>> And another video: https://youtu.be/ol8ZKmo82oY
>>>
>>> The starter slows noticeably when spinning. I guess it's going back to
>>> the rebuilder, unless someone tells me this is normal.
>>>
>>>
>>>
>>>> On Tue, Jul 24, 2018, 8:45 PM Tom Rymes <tom at rymes.net> wrote:
>>>>
>>>> So, I took the starter out of the car tonight, and remembered why I
>>>> never
>>>>> wanted to do that again. The Bendix looks to be in good shape with
>>>>> no broken parts and freely moving and well-lubricated.
>>>>
>>>>
>>>>> Is it possible that this could just be a weak battery that just
>>>>> doesn't have enough power to throw the starter gear to a fully engaged
>> position?
>>>>
>>>>
>>>> Video: https://youtu.be/N3psw31a8TI
>>>>
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