[Healeys] speedo stuck at 78 MPH

[Roger Grace]

See photo as requested.
For the pulses you have 2 options;
They sell a transducer that produces pulses that attaches to the old speedo
cable - easiest install.
or you can make a bracket (as I did) to attach a proximity detector that
picks up the bolt heads on the rear universal flange. I opted for this as
it then totally eliminates any issues with cable and rt angle drive etc.
The trip display and setup data is entered via a small pb mounted under
dash.
You also need +- ve supplies to the instrument. - ve ground only. A bit of
a fiddly project but great to have an accurate stepper motor speedo. BTW
they also converted my tacho to stepper type.
rg

<http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>
Virus-free.
www.avg.com
<http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>
<#m_-1804526133706681262_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

On Sat, Jun 12, 2021 at 11:04 PM i erbs via Healeys <healeys at autox.team.net>
wrote:

> Im thinking about taking it apart   but afraid the price to fix will go up
> if I tried first.
>
> Ira Erbs
> 1959 AH 100-6
> 1967 MGB
> Milwaukie, OR
>
> On Sat, Jun 12, 2021, 11:01 PM Bob Spidell <bspidell at comcast.net> wrote:
>
>> re: "As the needle is stuck, it sounds like the movement/bearing is
>> sticky."
>>
>> Yep. Hence the 'tap the face of the gauge trick' (for dramatic effect, if
>> nothing else).
>>
>> Side note: I've taken several speedos apart and actually got one or two
>> back together. I expected to see an alleged 'jeweled bearing,' but as far
>> as I could tell it was brass-on-brass (the brass needle spindle against a
>> brass pocket). No Swiss watch stuff.
>>
>> Bob
>>
>> On 6/12/2021 8:49 PM, Roger Grace via Healeys wrote:
>>
>> As the needle is stuck, it sounds like the movement/bearing is sticky.
>> The hair spring should return it if OK.
>> If you do decide to replace it, maybe consider a digital replacement that
>> you can get built with the exact face as your current one - it can be tuned
>> to be dead accurate - independent of diff or tires. The only issue is that
>> there is a small lcd trip recorder. I have one on my BJ8 and nobody notices
>> the lcd as the speedo face is the same as original and as the tacho, About
>> 180 gbp from Speedy Cables in Wales. You would need to sort out a source of
>> pulses to drive it. Absolutely no needle jiggering either - it is just like
>> a modern car speedo.
>> If of interest, I could send you a photo.
>> rg
>>
>> On Fri, Jun 11, 2021 at 3:06 PM i erbs via Healeys <
>> healeys at autox.team.net> wrote:
>>
>>> Any ideas on why my speedo is stuck at 78 MPH? my cable spins freely
>>> when I remove it from the back of the speedo, but does not spin while
>>> moving. I have not yet jacked it up to see if my angle drive is shit or
>>> not. I need to replace it anyway as my speedo is off with new tires. It
>>> said 78 , but I was really doing 65., Honest officer
>>> Ira Erbs
>>> Milwaukie,OR
>>>       _______                                  _______
>>>      (______ \____1959 BN4____/ _______)
>>>          (_________________________)
>>>           BT7 engine and disk brakes
>>>
>>>
>>> 1967 MGB  [image: MG]
>>>
>>> A racing car is an animal with a thousand adjustments. Mario Andretti
>>> Please excuse random auto corrects and misspelled words
>>>
>>>
>> _______________________________________________
>> Support Team.Net http://www.team.net/donate.html
>> Suggested annual donation  $12.75
>>
>> Archive: http://www.team.net/pipermail/healeys
>> http://autox.team.net/archive
>>
>> Healeys at autox.team.net
>> http://autox.team.net/mailman/listinfo/healeys
>>
>> Unsubscribe/Manage:
>> http://autox.team.net/mailman/options/healeys/eyera3000@gmail.com
>>
>> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation  $12.75
>
> Archive: http://www.team.net/pipermail/healeys
> http://autox.team.net/archive
>
> Healeys at autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/roggrace@telus.net
>
>
<http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>
Virus-free.
www.avg.com
<http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail>
<#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/healeys/attachments/20210613/4f91763c/attachment-0001.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 20210613_095315.jpg
Type: image/jpeg
Size: 4698912 bytes
Desc: not available
URL: <http://autox.team.net/pipermail/healeys/attachments/20210613/4f91763c/attachment-0001.jpg>