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Author Topic: diameter of front "crossmember" tube.  (Read 277 times)
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impaw
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« on: 20 July, 2020, 04:32:18 PM »

Hello,

I suspect  the tube that the steering box attaches to, has been replaced with a with a slightly fatter tube, as I have difficulty fitting the steering box to the tube.
My tube is 36 / 35,8 mm in diameter.
Can anybody confirm this diameter?

Thank you!

Torstein



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Torstein

1955 Aurelia B20
1966 Fulvia
1966 Fulvia rally/race car
impaw
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« Reply #1 on: 21 July, 2020, 02:31:14 PM »

Diameter confirmed!

Does the steering box usually need a lit of force to fit over the tube?
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Torstein

1955 Aurelia B20
1966 Fulvia
1966 Fulvia rally/race car
chriswgawne
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« Reply #2 on: 21 July, 2020, 03:04:29 PM »

I would have said the tube diameter should be 35mm by the way Torstein. This is from measuring a complete rebuilt steering box and clamp on the bench.
There should be no force necessary to place it in the correct position as neither the steering box or the steering box clamp is a complete semi circle.
Has there been metalwork in this area? The metal under the tube is often very corroded needing replacing and the shape and position of the aperture relative to the cross tube for mounting the steering box  is quite critical.
Chris
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Chris Gawne
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impaw
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« Reply #3 on: 21 July, 2020, 03:51:30 PM »

I removed some undercoating etc and got 35,3mm so you are right Chris, 35 is the correct number.

Is this the correct steering box?



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Torstein

1955 Aurelia B20
1966 Fulvia
1966 Fulvia rally/race car
impaw
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« Reply #4 on: 21 July, 2020, 03:58:12 PM »

...and yes, there might have been repairs in this area
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Torstein

1955 Aurelia B20
1966 Fulvia
1966 Fulvia rally/race car
chriswgawne
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« Reply #5 on: 21 July, 2020, 05:14:49 PM »

Is there no 'lancia' identification plate on the upper side of the box?
I have never seen one with cross headed screws before.
Chris 
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Chris Gawne
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chriswgawne
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« Reply #6 on: 21 July, 2020, 05:29:35 PM »

Here is a rebuilt rhd B20 steering box+ clamp bracket number 2065
Chris


* B20 steering box1.jpg (71.15 KB, 1024x576 - viewed 14 times.)

* B20 steering box2.jpg (67.42 KB, 1024x576 - viewed 14 times.)

* B20 steering box3.jpg (76.03 KB, 1024x576 - viewed 16 times.)
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Chris Gawne
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impaw
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« Reply #7 on: 21 July, 2020, 05:48:59 PM »

Thank you for replying,

No Lancia markings, the only markings on the box is " C10 15017"

Dammit, doesnt look promising Cheesy





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Torstein

1955 Aurelia B20
1966 Fulvia
1966 Fulvia rally/race car
impaw
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Posts: 57


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« Reply #8 on: 21 July, 2020, 05:57:02 PM »

another marking, on the bracket.
Something that looks like a logo, a circled "T"
then: " C.10 - 60023"


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Torstein

1955 Aurelia B20
1966 Fulvia
1966 Fulvia rally/race car
Sliding Pillar
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« Reply #9 on: 21 July, 2020, 07:47:30 PM »

C10, isn't that an Appia number?
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1955 Aurelia
1961 Lamborghini
impaw
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« Reply #10 on: 21 July, 2020, 08:26:13 PM »

C10, isn't that an Appia number?

That makes sense, and would explain the fitment issues.
The box seemed too small for the tube, and I would guess the crossmember tube on an Appia is of a smaller dimension than on the Aurelia
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Torstein

1955 Aurelia B20
1966 Fulvia
1966 Fulvia rally/race car
impaw
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****
Posts: 57


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« Reply #11 on: 21 July, 2020, 08:45:10 PM »

Google confirms, it is indeed an Appia steering box.
Good thinking Ade!
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Torstein

1955 Aurelia B20
1966 Fulvia
1966 Fulvia rally/race car
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