Hi
I'm trying the reproduce the clock reset assembly for a standard dash for a 70-71 e-Body.
With the help of this forum, I got all the correct measurement. A friend helped me with the first prototype.
It came out very good as you can see on the picture. I'm struggling with the small thread on the small pin.
Can anybody find out what kind of thread this is? I thought it is a 1-72 UNF? But I have no idea is this correct or not. :dunno:
The reset knob on the rally dash have the same size there.
As I'm in Switzerland, I don't have the tools here to check the correct thread.
I hope anybody can help me.
Thank you in advance.
Daniel
I can't help you, but very nice work!
I have the large outer sleeve in my dash but am missing the knob and inner shaft. I assume the thread goes into the smaller sleeve shown which acts as a nut in order to hold the shaft in the knob, and thus the knob in the outer sleeve?
Do you have a micrometor or caliper to measure thread diameter? Using some magnification, you can count the number of threads over .250" length and multiply x4 to get the approximate TPI. You may try taking it to a clock or watch repair shop and they may have the proper thread pitch gages. I don't think that Switzerland has always been a metric country, until the late 1870's.
Ok, I got a TPI of 40. What is TPI?
The caliper shows me 2mm which is 0.0787" I beleve.
Well, since I'm on the earth, we have meters :D
Quote from: elan71 on June 03, 2021, 07:34:40 AM
Ok, I got a TPI of 40. What is TPI?
The caliper shows me 2mm which is 0.0787" I beleve.
Well, since I'm on the earth, we have meters :D
TPI means "threads per inch" . 40 TPI is equivalent to 0.64mm pitch
I was going to guess 4-40 size but the examples I have measure 0.110" diameter.
The diameter you give is similar to a 1-64 but the thread pitch if correct, doesn't match. It could be a custom dimension.
This chart gives some dimensions of the standard screw threads. http://www.carbidedepot.com/formulas-tap-standard.htm
TPI = Threads per inch
Dam 0.08 too late :pullinghair: :haha:
1-64UNC and 1-72UNF have the same major diameter.
72 TPI = pitch of 0.01389in or 0.352mm (spacing between center of the thread crests)
I believe the threads are also the same on Rallye gauges too. If you can wait until Saturday I can check mine.
Now I got around to installing the prototype.
Unlike other photos I have found here, the unit disappears almost completely in the dashboard. Only the button looks out.
This is actually quite good, especially if you have a radio installed. The button disturbs so much less. The function is perfect.
I followed the measurements here from the forum.
My question now, is this factory correct? How was it from the factory?
Are there other examples I may see?
I want to be sure it is as it was from the factory.
Daniel
Quote from: elan71 on June 24, 2021, 11:08:53 PM
Now I got around to installing the prototype.
Unlike other photos I have found here, the unit disappears almost completely in the dashboard. Only the button looks out.
This is actually quite good, especially if you have a radio installed. The button disturbs so much less. The function is perfect.
I followed the measurements here from the forum.
My question now, is this factory correct? How was it from the factory?
Are there other examples I may see?
I want to be sure it is as it was from the factory.
Daniel
Who cares if it's correct! It's awesome and fills that dead gauge nicely. I may have to get one.
Here's the only picture I could find (so far) of my car's standard dash before converting to a rallye. It's hard to tell how far down the chrome knob is and whether any of the barrel/housing is sticking out from the bezel. IIRC some of the housing was showing below the bezel, but don't quote me.
Taken from an eBay ad (& lightened up). You can kind of see how far the barrel sticks out from the bezel. It's a hi res pic so download for a better view.
Thank you all for the pictures.
I keep it as it is. Looks like the length is correct.
It looks good and is easy to use. Assembling is a little harder, but you have to do this only once.
Next step is in process and I'll check all the costs and possibilities.
Daniel
I'd buy one if you and your friend want to make another. I'm probably not the only one looking for one.
From my 71 Barracuda for your reference.
Thank you for the picture.
In my car the part looks less far out. I have taken the mass here from the forum. But it works great. The view of the radio is also better when it is a little higher.
I hope to have more soon.
I let you all know this here.
Daniel
Hi
It took a while, but now they are here. The first samples from the first production. They are still being galvanized.
The pin still needs some adjustment but it comes good. It will not take so long....
I'll definitely take one. Leet me know
Hi
Now it's finished and ready to sell.
It took a while but it is very nice now.
You can find it on ebay:
https://www.ebay.ch/itm/185411584501 (https://www.ebay.ch/itm/185411584501)
Daniel
Swiss made, you know it's going to be a quality item. :bigthumb:
Yes, I tried, but nobody was interested.
Well, one was, but we couldn't find a deal, unfortunately.
But I'm still open for an interesting deal... ;)
Logistic is not a big thing, luckfully. Just a small package....