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Austinsevenfriends › Austin Seven Friends Forum › Forum chat... v
Torque tube woes...

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Torque tube woes...
Nick Lettington Offline
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Location: Essex
#1
03-12-2018, 10:29 PM
I thought I had a spare CWP set to assist in rebuilding my back axle, but as it turns out, the pinion shaft is about 2" longer than for a 7. Part number partially visible... 

   

Anyone know what they are for... And if so who might like them?
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Speedex750 Offline
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#2
03-12-2018, 11:23 PM (This post was last modified: 03-12-2018, 11:23 PM by Speedex750.)
Hi Nick,
It looks like an Austin part number but not one I recognise. If everything else has the right dimensions, can you machine down the taper end?
Dave
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Nick Lettington Offline
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#3
03-12-2018, 11:43 PM
(03-12-2018, 11:23 PM)Speedex750 Wrote: Hi Nick,
It looks like an Austin part number but not one I recognise. If everything else has the right dimensions, can you machine down the taper end?
Dave

Hi Dave. I thought that too re the number, although I hadn't realised how clear it is in the photo... 1A7653

Unfortunately, everything is a little bit stretched. The reverse thread is a little further away from the pinion etc... so I don't think I can. 

I see there's another Speedex for sale in the association magazine. Did you manage to track down the Italian car and the Silverstone's new owner?
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Tony Betts Offline
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#4
03-12-2018, 11:51 PM
Hi nick,

 What is the gear ratio.

If it's 5.125 to 1 and the pinion is longer than austin 7.

Then it should be BIG 7.

Tony.
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Nick Lettington Offline
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#5
03-12-2018, 11:56 PM (This post was last modified: 04-12-2018, 12:25 AM by Nick Lettington. Edit Reason: Credit where credit is due! )
(03-12-2018, 11:51 PM)Tony Betts Wrote: Hi nick,

 What is the gear ratio.

If it's 5.125 to 1 and the pinion is longer than austin 7.

Then it should be BIG 7.

Tony.
Thanks Tony, that does make sense. Methinks I may be phoning you on the morrow...
   
(Oh... Credit to the Association archive for the parts list)
Ok... Anyone want a used big 7 cwp set? No use to me. Undecided
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Hedd_Jones Offline
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Car type: '28 GE Cup. '28 AD Chummy '30 RL Saloon. '34 RP Saloon. Too Many toys!
#6
04-12-2018, 12:15 AM (This post was last modified: 04-12-2018, 12:15 AM by Hedd_Jones.)
Keith Rawson used to fit big 7 axles complete as was off the car. He simply moved his ball forward on the chassis and sawed a bit out of his propshafts.

I wouldnt have thoight it beyond the wit of man to shorten a big 7 pinionshaft to fit. Perhaps by cutting & shutting the big 7 casing also? Though I do recall the casing is tapered?
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Nick Lettington Offline
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#7
04-12-2018, 12:29 AM
Thanks Hedd.

I'm wincing at the thought of it.
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Chris KC Offline
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#8
04-12-2018, 09:51 AM
With new A7 CWP's available off the shelf surely this might be better redirected to someone who may not be so happily placed.
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David.H Offline
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#9
04-12-2018, 02:58 PM
(04-12-2018, 09:51 AM)Chris KC Wrote: With new A7 CWP's available off the shelf surely this might be better redirected to someone who may not be so happily placed.

Err............1A "7653"  not 1A 7635?
David
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Nick Lettington Offline
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#10
04-12-2018, 03:04 PM
Ha! Thanks David. that's the problem with reading upside down!

Still clueless. anyone got a better idea?
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