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Patrick Lockyer.
Grand Master
Username: pat_lockyer

Post Number: 1272
Registered: 9-2004
Posted on Friday, 21 April, 2017 - 05:46 am:   Edit PostDelete PostView Post/Check IP

Took the Porsche 968 out for MOT after years of storage this is the 6 speed manual. I have a auto one that I use more often.
Passed Ok with a note on the old tyres.
On the way back home the odometer stopped working.
Today dismantled the speedo head and found the tiny little gear had a broken tooth, tried to mend it, no go on that so will get 3D printed one.
Clever stuff as the gear diameter is only 6.90mm with 15 teeth.
Pic of old brown broke gear



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Patrick Lockyer.
Grand Master
Username: pat_lockyer

Post Number: 1273
Registered: 9-2004
Posted on Friday, 21 April, 2017 - 05:53 am:   Edit PostDelete PostView Post/Check IP

A picture of the 968 with the look of the time with the headlight pods up.
getting dated with the style.

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Graham Watson
Experienced User
Username: graham508

Post Number: 42
Registered: 3-2016
Posted on Friday, 21 April, 2017 - 06:06 am:   Edit PostDelete PostView Post/Check IP

Hi Patrick,
Have you had items 3D printed before?
The pot metal disc in my MKVI window regulator has FTW'd (failed to wind). I have tried various repairs but to no avail. I was thinking as it is a fairly simple part it would be a good candidate for being 3D printed in metal.
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Patrick Ryan
Grand Master
Username: patrick_r

Post Number: 1461
Registered: 4-2016
Posted on Friday, 21 April, 2017 - 10:15 am:   Edit PostDelete PostView Post/Check IP

Still love the look of the Porsche mate.

A real classic.
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Kelly Opfar
Prolific User
Username: kelly_opfar

Post Number: 168
Registered: 7-2004
Posted on Friday, 21 April, 2017 - 01:12 pm:   Edit PostDelete PostView Post/Check IP

Mr. Lockyer (we need more Patricks here),
I just this week bought a new speedometer gear for my Shadow from this guy on eBay:
https://goo.gl/OFwEAB
I think he actually specializes in Porsches.
Probably easier and cheaper than printing your own.
Kelly
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Patrick Lockyer.
Grand Master
Username: pat_lockyer

Post Number: 1274
Registered: 9-2004
Posted on Friday, 21 April, 2017 - 04:57 pm:   Edit PostDelete PostView Post/Check IP

Kelly Thanks for that, if I was in the States I would go these folk.
https://www.odometergears.com/distributors.php
They listed UK supplier but not any more.
For myself to get one the carriage would be double the cost of the items.
So hope the 3D will be ok, cost to do some it seems are a few pounds.
thanks again.
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ross kowalski
Grand Master
Username: cdfpw

Post Number: 395
Registered: 11-2015
Posted on Friday, 21 April, 2017 - 09:53 pm:   Edit PostDelete PostView Post/Check IP

Patrick L,

15 tooth you say. Hmmmm.

That looks exactly like the same one in old volvos. As a matter of fact it has the same tooth break. I had one pack up a few years ago. There was a ready market in those as every old volvo needs one. I forget what I paid, but it was low.

What printing technology is you service bureau using?
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Patrick Lockyer.
Grand Master
Username: pat_lockyer

Post Number: 1278
Registered: 9-2004
Posted on Friday, 21 April, 2017 - 10:44 pm:   Edit PostDelete PostView Post/Check IP

Custom 3DPrinted Parts is the company.
Did you replace the gear pod as well as the 15 tooth gear.

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ross kowalski
Grand Master
Username: cdfpw

Post Number: 398
Registered: 11-2015
Posted on Friday, 21 April, 2017 - 11:06 pm:   Edit PostDelete PostView Post/Check IP

Patrick L,

I don't remember replacing the pod just a 15 tooth gear. Of course that was three Volvos ago.

No saying if it's the same thing but it looks exactly like the volvo unit.

Make sure whatever printing technology you use has the proper mechanical properties. Some printing materials and processes have some quirks.

Now that I think about it, I am far more interested in how the 3d part would work out for that job than an injection moulded part would.
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ross kowalski
Grand Master
Username: cdfpw

Post Number: 400
Registered: 11-2015
Posted on Friday, 21 April, 2017 - 11:20 pm:   Edit PostDelete PostView Post/Check IP

Graham,

Do you have a picture of the regulator part that is broken?
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Patrick Lockyer.
Grand Master
Username: pat_lockyer

Post Number: 1303
Registered: 9-2004
Posted on Saturday, 29 April, 2017 - 09:48 pm:   Edit PostDelete PostView Post/Check IP

Gears and pods arrived to-day quality is perfect,
no need to oil on assembly.
Pix of the small gear and pod gear.
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ross kowalski
Grand Master
Username: cdfpw

Post Number: 418
Registered: 11-2015
Posted on Tuesday, 09 May, 2017 - 12:24 pm:   Edit PostDelete PostView Post/Check IP

Patrick L,

Are those 3D printed parts or replacement Volvo parts?

Did they work?
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Patrick Lockyer.
Grand Master
Username: pat_lockyer

Post Number: 1331
Registered: 9-2004
Posted on Tuesday, 09 May, 2017 - 08:00 pm:   Edit PostDelete PostView Post/Check IP

Ross they are the 3d printed parts, clever stuff! the parts I have installed in the unit when they came as the memory may not be as good as it used to be.
The RR interior trim kept me busy.
The unit is now waiting for me to fit, but other commitments are pressing at the mo.


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John Beech
Grand Master
Username: jbeech

Post Number: 377
Registered: 10-2016
Posted on Wednesday, 10 May, 2017 - 10:09 am:   Edit PostDelete PostView Post/Check IP

Patrick, did you draw the part with a CAD program and send that to the service bureau, or did you send the part itself, or . . . ?
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Patrick Lockyer.
Grand Master
Username: pat_lockyer

Post Number: 1358
Registered: 9-2004
Posted on Tuesday, 23 May, 2017 - 06:41 am:   Edit PostDelete PostView Post/Check IP

Update on the 3D gears.
Had some time today to fit the speedo cluster all went well with the fitting, road test no go not just on the odometer but the speedo as well.
removed the cluster dismantled refit and ran the rear wheels up, nothing! removed and decided to remove the gears and run the unit so the MPH clock part should work as it did originally.
Ran the rear wheels up nothing.
Ah Beetle days the speedo is ran from the n/s wheel hub.
Rang my son "Father the modern sensor for electronic speedo may be off the abs or steering angle sensor but no way on the transmission.
Put it all back to-gether and drove the car only to find the unit worked but only intermittently Took it all apart and found the stepper motor fixing needed to be set on a low torque other wise it would not run free.
The 3D gears are the way to IMO for parts not available anymore.

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Randy Roberson
Grand Master
Username: wascator

Post Number: 733
Registered: 5-2009
Posted on Friday, 02 June, 2017 - 04:29 am:   Edit PostDelete PostView Post/Check IP

Had to do the same thing to a Mercedes-Benz to get the odometer back working. The new gear was a different type of plastic with supposedly longer expected life.
Little plastic thingys deep down inside can cost a fortune to repair because of the difficulty to get to some of them; as in this Mercedes, a plastic bit in the evaporator housing with about 10 hours of labor to get to. Part is about $4 US. Wish they would not do that.

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