1950’s Crypton engine analyser - UK Vintage Radio Repair and Restoration Discussion Forum

ScottyH · 27th Sep 2020, 9:06 pm

Would anyone have any information relating to the above mentioned test set?
There is a ‘scope, volts, amps, exhaust gas tester, rpm and dwell functions.
So far I have checked the ac input box (20 odd pounds of choke and transformers) and after removing the tubes, checked the transformer output.
I’ll need to remove the CRT and look for a part number so I can start tracking down pi outs and test that.
I’ve attached a front photo as well as the data plate.
Anyone seen one of these before?

AC/HL · 27th Sep 2020, 11:09 pm

Not the same model, but you may get some ideas: https://www.vintage-radio.net/forum/...d.php?t=165804

ScottyH · 28th Sep 2020, 12:29 am

Thanks, I've read through the post, and managed to contact the gentleman referred to.
Unfortunantly he does not have anything for this (much older) model.

It doesn't look too complicated, just a matter of tracing it out.

Anyone know a good source for .15uf 3KV DC caps?

ScottyH · 30th Sep 2020, 4:01 am

Well, testing continues. The CRT quick tested ok. About 3.55V after 15 seconds or so. The heater volatges are all good, and the big power supply caps reformed well. HV seems to be missing, possibly a dud tube, but until I get another one I can't really tell.
This is fun, it's been a while since I did something like this.

John_BS · 6th Oct 2020, 9:11 pm

It's worth a punt to see if the current company manifestation has any information:

https://www.cryptontechnology.com/why-crypton/history
They may like some photos for their archive!

JOhn

27th Sep 2020, 9:06 pm	#1
ScottyH Triode Join Date: Sep 2020 Location: Auckland, New Zealand Posts: 29	1950’s Crypton engine analyser Would anyone have any information relating to the above mentioned test set? There is a ‘scope, volts, amps, exhaust gas tester, rpm and dwell functions. So far I have checked the ac input box (20 odd pounds of choke and transformers) and after removing the tubes, checked the transformer output. I’ll need to remove the CRT and look for a part number so I can start tracking down pi outs and test that. I’ve attached a front photo as well as the data plate. Anyone seen one of these before? Attached Thumbnails

27th Sep 2020, 11:09 pm	#2
AC/HL Dekatron Join Date: Nov 2003 Location: Heckmondwike, West Yorkshire, UK. Posts: 9,642	Re: 1950’s Crypton engine analyser Not the same model, but you may get some ideas: https://www.vintage-radio.net/forum/...d.php?t=165804

28th Sep 2020, 12:29 am	#3
ScottyH Triode Join Date: Sep 2020 Location: Auckland, New Zealand Posts: 29	Re: 1950’s Crypton engine analyser Thanks, I've read through the post, and managed to contact the gentleman referred to. Unfortunantly he does not have anything for this (much older) model. It doesn't look too complicated, just a matter of tracing it out. Anyone know a good source for .15uf 3KV DC caps?

30th Sep 2020, 4:01 am	#4
ScottyH Triode Join Date: Sep 2020 Location: Auckland, New Zealand Posts: 29	Re: 1950’s Crypton engine analyser Well, testing continues. The CRT quick tested ok. About 3.55V after 15 seconds or so. The heater volatges are all good, and the big power supply caps reformed well. HV seems to be missing, possibly a dud tube, but until I get another one I can't really tell. This is fun, it's been a while since I did something like this. Attached Thumbnails

6th Oct 2020, 9:11 pm	#5
John_BS Octode Join Date: Dec 2008 Location: Wincanton, Somerset, UK. Posts: 1,782	Re: 1950’s Crypton engine analyser It's worth a punt to see if the current company manifestation has any information: https://www.cryptontechnology.com/why-crypton/history They may like some photos for their archive! JOhn