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#1 speedo drive thread
Posted: Sun Jun 09, 2024 5:06 am
by lowact
Did I just learn something? Struggling to figure out the thread on the ¾ inch speedo drive from the gearbox – that the right-angle drive screws onto. 27 tpi is too fine, 1 mm is too coarse. Thanks to AI assisted searching I now know about BSB (british std brass) threads, 26 tpi across the range…
#2 Re: speedo drive thread
Posted: Sun Jun 09, 2024 10:49 pm
by abowie
What's the diameter of the thread on the speedo drive?
You can buy Brass taps and dies on Ebay; they all come from India.
https://www.ebay.com.au/sch/i.html?_fro ... =0&_sop=16
#3 Re: speedo drive thread
Posted: Thu Jun 13, 2024 2:54 pm
by lowact
3/4. Already ordered (from India), last bastion of all things British?
#4 Re: speedo drive thread
Posted: Thu Jun 13, 2024 9:52 pm
by abowie
lowact wrote: ↑Thu Jun 13, 2024 2:54 pm
3/4. Already ordered (from India), last bastion of all things British?
I have bought a number of small machining bits and pieces from India via Ebay.
They've all been pretty good.
#5 Re: speedo drive thread
Posted: Tue Jun 18, 2024 2:55 am
by rossco_j
I agree Andrew, I bought some “eyebrows” for the A30 from India. Very good quality.
#6 Re: speedo drive thread
Posted: Tue Jun 18, 2024 5:21 am
by abowie
rossco_j wrote: ↑Tue Jun 18, 2024 2:55 am
I agree Andrew, I bought some “eyebrows” for the A30 from India. Very good quality.
I admit to being a bit jealous.
Back in the day I wrecked an A40 Farina for the nuts and bolts. I wish I'd kept it to race.