29-08-2018, 03:42 PM
(This post was last modified: 29-08-2018, 03:57 PM by Jeff Taylor.)
Firstly I'd wholeheartedly agree with the advice given by Reckless and Ruairidh - certainly here in the UK there's loads of companies that will repair and if necessary make totally new prop shafts using standard off the shelf yokes that appear to be very similar in size if not identical to those originally fitted to Ruby's.
As to the two new UJ's you bought from one of the cherished suppliers:
GKN only specify in mm these days.
2.424" length = 61.5mm
2.435" length = 61.8mm
The correct bearing cap diameter for Austin Ruby yokes should be 23.8mm (0.937")
As previously mentioned by Roly in Peter Naulls post of 18.08.2018, GKN currently produce a cruciform spider 61.3mm in length across the races but also one at 61.5mm length - just that little bit longer although the cap diameter is slightly smaller at 23.5mm. As far as I can see GKN don't produce one 61.8mm (2.435") length.
The 61.3mm length unit is currently GKN UJ - U152 - what's the GKN part number on your old one Erich?
I added the following information to Peter's post:
The original Hardy Spicer part number for the UJ kits was K5-GB1 - this particular UJ kit fitted all the following vehicles:
Austin 7 1935/39, Big 7, Austin 8 (pre 1945), 10/4, Light 12/4 and Light 12/6.
Morris 8 1935/39, 10/4 and 12hp.
MG 1935/39 Magna, Magnette and Midget.
As Roly suggests, looking at the catalogue GKN UJ - U152 is 23.8D x 61.3L - interestingly both the Morris Register Spares Service and a well known Morris Spares cherished supplier stock a UJ with the part number QL152 described as fitting the Morris 8, 10/4 and 12hp which as I mentioned in my earlier post is the same UJ as an Austin Ruby.
Some further information - Hardy Spicer from the 1930's to 1950's used to specify their dimensions based purely on the size of the cruciform spider with its four needle bearing caps removed. The dimensions for the original K5-GB1 were therefore as follows:
Diameter of spider journals = 37/64" (14.684375mm)
Length of spider = 2.1/4" (57.15mm)
If you read Peter's post from the 18th of August, it would seem he too had been supplied the wrong size UJ's by one of the cherished suppliers and was planning on returning them for a refund our replacement.
Assuming your prop shaft yokes are indeed the original size Austin Ruby ones then the GKN (or equivalent to) U152 @ 61.3mm (2.413") length x 23.8mm (0.937") diameter should be the one you need.
Here's Roly's link to the current GKN catalogue:
https://irp-cdn.multiscreensite.com/625e...joints.pdf
As to the two new UJ's you bought from one of the cherished suppliers:
GKN only specify in mm these days.
2.424" length = 61.5mm
2.435" length = 61.8mm
The correct bearing cap diameter for Austin Ruby yokes should be 23.8mm (0.937")
As previously mentioned by Roly in Peter Naulls post of 18.08.2018, GKN currently produce a cruciform spider 61.3mm in length across the races but also one at 61.5mm length - just that little bit longer although the cap diameter is slightly smaller at 23.5mm. As far as I can see GKN don't produce one 61.8mm (2.435") length.
The 61.3mm length unit is currently GKN UJ - U152 - what's the GKN part number on your old one Erich?
I added the following information to Peter's post:
The original Hardy Spicer part number for the UJ kits was K5-GB1 - this particular UJ kit fitted all the following vehicles:
Austin 7 1935/39, Big 7, Austin 8 (pre 1945), 10/4, Light 12/4 and Light 12/6.
Morris 8 1935/39, 10/4 and 12hp.
MG 1935/39 Magna, Magnette and Midget.
As Roly suggests, looking at the catalogue GKN UJ - U152 is 23.8D x 61.3L - interestingly both the Morris Register Spares Service and a well known Morris Spares cherished supplier stock a UJ with the part number QL152 described as fitting the Morris 8, 10/4 and 12hp which as I mentioned in my earlier post is the same UJ as an Austin Ruby.
Some further information - Hardy Spicer from the 1930's to 1950's used to specify their dimensions based purely on the size of the cruciform spider with its four needle bearing caps removed. The dimensions for the original K5-GB1 were therefore as follows:
Diameter of spider journals = 37/64" (14.684375mm)
Length of spider = 2.1/4" (57.15mm)
If you read Peter's post from the 18th of August, it would seem he too had been supplied the wrong size UJ's by one of the cherished suppliers and was planning on returning them for a refund our replacement.
Assuming your prop shaft yokes are indeed the original size Austin Ruby ones then the GKN (or equivalent to) U152 @ 61.3mm (2.413") length x 23.8mm (0.937") diameter should be the one you need.
Here's Roly's link to the current GKN catalogue:
https://irp-cdn.multiscreensite.com/625e...joints.pdf