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Re: STEERING BOX ANGLES - Nippy/65

I have a 9E 96 on the '35 Nipoy. Having difficulties with getting it anywhere near where the bracket should attach, so wondering whether any other Nippies have different 9E numbers...?

Re: STEERING BOX ANGLES, NYLOKS & SIMILAR

Urgent Austin
Tom Coates
I had a reproduction raked box on my Cup model and never had much success with getting the worm and gear to mesh properly. Despite careful setting up it would start off horribly and then gradually become slack over 100 miles until there was so much play that it wouldn't stay in a straight line.


Hi Tom,

I'm currently saving my shekels for a new sports steering box casing, but now I'm worried it might not be the best option! If the gears on your box were meshed "horribly" (tightly?) then I wonder how they could become unmeshed other than through something not being done up properly? Did you do the laborious lapping job? I did that to my Ruby box last summer and I have to say I am pleased by the result. It took three long sessions with the grinding paste to get it right!

The other option for me is the dreaded wedge, but one hears nasty stories about them...


I have never used a wedge, but I don't think they are for the purist! I think you have to fiddle with the brake pivot which sounds like a bit of a pain.

Re: STEERING BOX ANGLES, NYLOKS & SIMILAR

Hi Tom,

I've got two spare s/h steering boxes and one casting of the aluminium case/mounting which has never been built up - must be NOS I guess?

The end float of the column is controlled by how far the column is screwed in. The meshing with the wheel is controlled by the three(?) nuts securing the steel plate on the side of the box. I guess if there is a lot of end float then you would get the illusion of a poor mesh at the wheel.

Or, and this would be more of a concern if you bought a new casting, the thread the column screws into might not be straight - if it is presenting the column at an angle, that might explain the problem, and could probably be found out if you still have it.

I'm not a TIG welder and would be a little concerned about having a go myself given the vital job of this particular component!

Re: STEERING BOX ANGLES, NYLOKS & SIMILAR

Tom,

"I have never used a wedge, but I don't think they are for the purist! I think you have to fiddle with the brake pivot which sounds like a bit of a pain."

Can't be too bad- my first chassis was built with a solid wedge which I made and fitted under the standard box. From memory the brake pivot was put into the original box hole and into the wedge. This raised the pedal somewhat but still useable.
Must have done something clever with all the bolts but I think the box assembly is still on the Meteor which is being rebuilt 50 years later in country Victoria. I am looking forward to seeing it - from what I hear still fitted with its twin Zenith updraughts

Tony.

Location: Melbourne, Australia.

Re: STEERING BOX ANGLES, NYLOKS & SIMILAR

Urgent Austin
Hi Tom,

I've got two spare s/h steering boxes and one casting of the aluminium case/mounting which has never been built up - must be NOS I guess?

The end float of the column is controlled by how far the column is screwed in. The meshing with the wheel is controlled by the three(?) nuts securing the steel plate on the side of the box. I guess if there is a lot of end float then you would get the illusion of a poor mesh at the wheel.

Or, and this would be more of a concern if you bought a new casting, the thread the column screws into might not be straight - if it is presenting the column at an angle, that might explain the problem, and could probably be found out if you still have it.

I'm not a TIG welder and would be a little concerned about having a go myself given the vital job of this particular component!


Hi Geoffrey,

I think the problem was the alignment as you suggest, I suspect that the excessive engineering tolerance in the thread meant that the columns was at a slight angle. Needless to say the supplier said he'd never had any problems with them with Dad moaned to him about it.

I'm not sure I'd recommend welding it yourself, if you were going to do it that way. If you know a good aluminium welder you can just do the cutting and set it up in a simple wooden jig to make sure the angles are right. If it's properly done it should be as strong as an original. Nick will give you chapter and verse if you are interested.

Tom

Re: STEERING BOX ANGLES

Going back to the earlier discussions on Steering Box angles, A7CA 2013D shows from Austin factory records -

XL 253 No angle but probably 49 1/2 degrees

XL 896....49 1/2 degrees

1A 6025...49 degrees

1A 6041...41 degrees

1A 6042...37 1/2 degrees

1A 6068...(possibly 37 1/2?) 'for Fabric Saloon and other short scuttle models'

The card also notes 'See later card for Cast Steel types'.

In earlier discussions we had added-

9C36......37 1/2 degrees

Tony.



Location: Malvern, Melbourne.

Re: STEERING BOX ANGLES

Tony,

Do you know if there is any difference between the two 37 1/2 degree boxes, (1A 6042 and 9C36) apart from the part number ?

Some years ago I purchased a 37 1/2 degree reproduction steering box casting from Colvin Gunn (sadly no longer with us I believe) does anyone know if anyone else is producing reproduction 37 1/2 boxes ?

Thanks

Marcus

Location: Auckland

Re: STEERING BOX ANGLES

Marcus

I recently bought a new box for my GE Cup project from James Gunn. The 1A 6041 box fouled the dashboard so James kindly swapped for an "ulster" type with no casting number that works a treat.

I'll measure the angle tomorrow if I get the chance.

James' number is 01279 876 773.

All the best

Peter

Location: United Kingdom

Re: STEERING BOX ANGLES

Thanks Peter,

That would be great if you could measure the angle for me.


I presume that James is Colvin's son, do you happen to have an email address for him ?

Cheers

Marcus

Location: Auckland

Re: STEERING BOX ANGLES

Marcus Ling
Tony,

Do you know if there is any difference between the two 37 1/2 degree boxes, (1A 6042 and 9C36) apart from the part number ?

Some years ago I purchased a 37 1/2 degree reproduction steering box casting from Colvin Gunn (sadly no longer with us I believe) does anyone know if anyone else is producing reproduction 37 1/2 boxes ?

Thanks

Marcus


According to the Austin Motor Co. coach builders drawings there is a difference between the two 37 1/2 degree steering boxes.

The difference is in plan view.

The 9C36/9C102 sits parallel to the chassis centre line. 8" at the chassis end and 8" at the steering wheel centre.

The 1A6042 sits splayed. 8'" at the chassis end and (from memory) 10" at the steering wheel centre.

Re: STEERING BOX ANGLES

These may help to illustrate Henry's comments above,

From the front of the car back you have,

1. Standard Box Saloon box

2. A1042

3. Modified A1041(angle to 37.5°)

4. 9C102


The last photo illustrates Henry's point best I think.

 photo DSC_0672_zps703cc6b5.jpg

 photo DSC_0673_zpsccd7f986.jpg

 photo DSC_0671_zps330d8398.jpg

Re: STEERING BOX ANGLES

Well illustrated, R. Thank you.

Ian Mc.

Location: Shropshire

Re: STEERING BOX ANGLES

Ruairidh,

Excellent pics.

The 9C102 appears to be less than 37.5 degrees?

Can I ask you a favour whilst the 9C102 is out of the car? Could you confirm how many turns of the steering wheel to 1 turn of the drop arm?

Re: STEERING BOX ANGLES

Henry,

"this" box is at 35°

I'll get back to you with the turns info.

Re: STEERING BOX ANGLES

6 complete turns Henry.

Re: STEERING BOX ANGLES

Thanks for that info. From memory the standard box is about 6 1/4 turns. I think it confirms that the internals are as the standard type.
There has been recent talk in the 750 Bulletin of the Ulster (or some of them) having a special slower steering ratio which would require either special worm and gear or longer steering arm, or even a shorter drop arm although I think that would be highly unlikely.

Re: STEERING BOX ANGLES

Are you being sarcastic or can you see the photos?
I only see photobucket adverts!
Bruce

Location: New Zealand, Whangarei