[DeTomaso] Speedo cable

[jderyke at aol.com]

Robert, there is no quick-fix. The way speedo cables work is, a spring-wire core runs between the ZF and speedometer, inside a steel jacket against a low-friction poly liner. Most of the time, the core rubbing against the poly liner causes slow wear, eventually going thru the liner. Then the spring-steel core begins rubbing the steel jacket, eventually twisting the spring-core in two. But from what you describe, you may have not a cable problem but a right-angle-drive adapter problem, since the cable apparently broke in the rear? square-drive cable section.  If the cable broke at the speedometer end, the gauge may have seized although I never heard of that happening. Pull the speedometer and fish out the broken end- it will need to be removed anyway from whatever end its in for a new assembly to work.

Note- if the broken piece is in the rt angle drive adapter, be VERY careful in removing the parts. The adapter unscrews via the big left/right threaded nut attached to it, NOT the small 10mm bolt just below it. That little bolt, carelessly removed, allows an extension shaft to fall inside your ZF, forcing a total transaxle tear-down to retrieve it.
Good luck- J DeRyke

 

 

 

-----Original Message-----
From: Robert Stroj <npdrs at maui.net>
To: detomaso <detomaso at server.detomasolist.com>
Sent: Fri, Aug 24, 2018 5:27 am
Subject: [DeTomaso] Speedo cable

Just had my speedo cable break, about in the middle of the square end that
enters into the gauge; I suppose the other part of the square wire is still
in the gauge.
I was wondering about possibilities of repairing this without the need of
taking replacing the whole cable and routing a new one.

1) seen a comment that this little part could possibly be welded back onto
the cable; seems it would be a tedious task?

2) Did someone use any of the generic core replacement, such as this
https://www.summitracing.com/int/parts/atp-yc101/applications
In theory it would be easiest to do by just sliding old core out and new in,
cutting to length and crimping new end, but not sure if actual dimensions
would work with our gauge or ZF drive....

Thanks for suggestions; hope there is a simple way to fix this!


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-------------- next part --------------
   Robert, there is no quick-fix. The way speedo cables work is, a
   spring-wire core runs between the ZF and speedometer, inside a steel
   jacket against a low-friction poly liner. Most of the time, the core
   rubbing against the poly liner causes slow wear, eventually going thru
   the liner. Then the spring-steel core begins rubbing the steel jacket,
   eventually twisting the spring-core in two. But from what you describe,
   you may have not a cable problem but a right-angle-drive adapter
   problem, since the cable apparently broke in the rear? square-drive
   cable section.  If the cable broke at the speedometer end, the gauge
   may have seized although I never heard of that happening. Pull the
   speedometer and fish out the broken end- it will need to be removed
   anyway from whatever end its in for a new assembly to work.
   Note- if the broken piece is in the rt angle drive adapter, be VERY
   careful in removing the parts. The adapter unscrews via the big
   left/right threaded nut attached to it, NOT the small 10mm bolt just
   below it. That little bolt, carelessly removed, allows an extension
   shaft to fall inside your ZF, forcing a total transaxle tear-down to
   retrieve it.
   Good luck- J DeRyke

   -----Original Message-----
   From: Robert Stroj <npdrs at maui.net>
   To: detomaso <detomaso at server.detomasolist.com>
   Sent: Fri, Aug 24, 2018 5:27 am
   Subject: [DeTomaso] Speedo cable
   Just had my speedo cable break, about in the middle of the square end
   that
   enters into the gauge; I suppose the other part of the square wire is
   still
   in the gauge.
   I was wondering about possibilities of repairing this without the need
   of
   taking replacing the whole cable and routing a new one.
   1) seen a comment that this little part could possibly be welded back
   onto
   the cable; seems it would be a tedious task?
   2) Did someone use any of the generic core replacement, such as this
   [1]https://www.summitracing.com/int/parts/atp-yc101/applications
   In theory it would be easiest to do by just sliding old core out and
   new in,
   cutting to length and crimping new end, but not sure if actual
   dimensions
   would work with our gauge or ZF drive....
   Thanks for suggestions; hope there is a simple way to fix this!
   _______________________________________________
   Detomaso Email List is not managed by POCA
   Posted emails must not exceed 1.5 Megabytes
   DeTomaso mailing list
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   [3]http://server.detomasolist.com/mailman/listinfo/detomaso
   To manage your subscription (change email address, unsubscribe, etc.)
   use the links above.
   Members who post to this list grant license to the list to forward any
   message posted here to all past, current, or future members of the
   list. They also grant the list owner permission to maintain an archive
   or approve the archiving of list messages.

References

   1. https://www.summitracing.com/int/parts/atp-yc101/applications
   2. mailto:DeTomaso at server.detomasolist.com
   3. http://server.detomasolist.com/mailman/listinfo/detomaso