Club Triumph

Regards from Germany,
This is my very first post on this forum. I´m driving TR since 1973, starting with a Spitfire and afterwards a TR6 PI 123HP.
I was engaged with Girling Car Brakes Germany at Koblenz in those days and worked as an design engineer  so I was very well connected with the Triumph Company.
As times go by more car seats were required and I was forced to change the size of my cars but the TR6 Workshop Manual was still smiling from my  book shelf. In 1999 I was able to reduce the number of seats and started again driving Triumph with a TR6PI from 1972. Most of the repair and maintenance work is done by myself and therefore I need some help.
Is any body out there who can tell me the thread diameters and type of thread of the two flat nuts with the two grooves on the circumference and the hex nut on top of the calibration unit.
Unfortunately we are not very much familiar with the non-metric threads Overseas and I don´t have any gauge to measure the sizes.
I want to manufacture these nuts as a replacement for the damaged ones mostly used on the control units.
In addition I have developed simple flat spanners to tighten the nuts perfectly without any damage while calibrating the control unit for the correct co values. How it works you can find out from the attached pic.

I would highly appreciate if somebody could provide me the required data.
Thanks
Peter

I like that set of spanners Peter - are you intending on making a few more sets?? I'm some distance away from my PI kit at the moment but will see if I can figure out the threads when I get back home in a couple of weeks - unless someone else has any pearls of wisdom in the meantime?

Blimey spanners-most over here use a big screwdriver and a hammer!

Am almos certain that they are  unf, will go and check it oot,

regards Marcus

Here ye are got the threads you want,

but they odd balls!!

long thin one,                                   3/16 unf   x  32  TPI

2 nd one, thin spring                        9/16 unf  x 24    TPI,            normal is 18 TPI

main one, big spring            this is 15/16 unf   x 20    TPI            actually .930, or 23.63 mm

its actctually less than 15/16 and more than 7/8 th, , as no sizecomes close enough

the last two threads are v,v,fine for the size of the bolt /nut,

i got loads of taps /dies , but nothing like these, and also there is nothing in the  Zeus  book either,.

so you may well have to get them done on a lathe, or order some 2nd hand ones,

or get a thread file, and repair any damaged hreads that way, but its the nuts you afteris it not

think a lathe , with a cutting thread will be the beast way

just get a nut/nuts with enough metal on it, then open out to new size

unless any one nows different

regards Marcus

Hi friends,
many thanks for the very useful information given by you.

Please excuse  my delayed reply, but we have just returned from our annual TR meeting of the German TR Register.
The crowd gathered at the Richard Wagner city of Bayreuth, some 200 TR cars with approx. 400 members have spend a very interesting extended weekend.

@ Jason: Yes, I will start production of spanners asap. I have to identify a new supplier, because the previous one did not survive the global recession.

@timbancroft61: Yes, that is true and the reason for so many wrong calibrated PI control units. But keep smiling, my spanners will help to solve the problems.

@GT6 M: Marcus, many thanks for the detailed dimensions. I will use the dimensions for programming a CNC lathe and will try till I get the right pitch and diameter. please be a little bit passion, it may take some time.

Thanks again for your help
regards
Peter  

Hello PI fans,
New spanners are now available.
The spanners are cut from stainless steel, 2mm thick with close tolerances. I have improved the design in order to make the handling more useful.
In case you have tortured your nuts already with in-appropriate tools and have damaged the slots or diameters, light re-work either on the nuts or the spanners might be necessary. Pictures can be send
The prize of the set is

    Hi fiends,

lock nuts for calibration unit of TR6 PI Metering unit are now available.
Please refer to the ebay category:
Vehicle Parts & Accessories - Classic Car Parts - Triumph
regards
Peter

Hi Peter,

I've only just joined Club Triumph and came across this old thread about your spammers for the Lucas metering unit.

They are beautiful! I've just finished a new 2.7 engine for my TR6 and I need to reset the mixture.

I realise this thread really is old but you still make these scanners?

Best Regards,
Geoff

Gosh Peter,
I never saw this thread before, and the sort-of-link to eBay doesn't find your spanners (after seven years, no surprise).
If you will consider another production run, I'll have a set!

John

Hi friends,

yes, these spanners are available and also the two counter nuts.

If you send €45,00 for a set of 4 spanners and €18,00 for the two nuts with paypal to my email

                          hplangenbach@yahoo.de

the consignment   will be shiped immediately.
Don´t forget your delivery address

Kind regards

Peter

Peter, just what wer the threads in the end,
any where near what i thowt they were

M

Just received them. They are really well made.

Mine arrived too, very quick indeed - thank you Peter!

And I, too, am impressed by them.
They have the quality of jewelmaker's precision tools!
I feel they should be mounted in a velvet lined case!
John

Hello friends,
in particular @JohnD and @Richard B
many thanks for your kind reply.
I´m happy that you appreciate the design and the making of the spanners and find the spanners useful.

It may be no surprise, I do have two more "jewels" in my mind, which make the maintenance and handling of other components of the beloved Lucas PI a little bit more comfortable.

Actual I´m in the process of identifying suitable suppliers and asap I will anounce the details on this page.

Till then
with kind regards from Germany

Peter

Peter

Dear Friends,
as promised in my last post, i have designed some new items which make the inspection work on the Lucas PI  a little bit easier.
In case you are interested, please refer to my blog

http://hplangenbach.myblog.de/

Spanners and nuts are also still available.

Kind regards from Germany

Peter