Lotus Elan

Open wheeler gets a birthday

PostPost by: SJ Lambert » Sun Dec 29, 2013 8:08 am

image.jpg and


And I thought stripping a cylinder head for re painting was fun!
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PostPost by: SJ Lambert » Sun Dec 29, 2013 8:13 am

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PostPost by: SJ Lambert » Sun Dec 29, 2013 8:16 am

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PostPost by: SJ Lambert » Sun Dec 29, 2013 8:32 am

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Aiming to get back to this
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PostPost by: SJ Lambert » Thu Jan 02, 2014 6:55 am

[attachment=0]image.jpg[/attachment


Some ancillary bits got a clean up today.
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PostPost by: SJ Lambert » Thu Jan 02, 2014 6:57 am

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PostPost by: SJ Lambert » Thu Jan 02, 2014 7:01 am

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PostPost by: SJ Lambert » Sat Jan 04, 2014 2:17 am

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Main frame getting some attention.
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PostPost by: SJ Lambert » Sat Jan 04, 2014 10:42 pm

The steel fuel pipe that can be seen on the rear right hand side (right hand foreground) & is mounted by welding at it's for & aft attachment points has cracked at it's front weld (seemingly more than once).

As it's encased within the monocoque structure we're looking to hit upon a fix that will be ultra reliable.

Our theory as to it's failure is engine vibration being directly transmitted to it (I suppose it's possible that it was just a poor weld initially & that subsequent repairs didn't improve things greatly).

Anyway, thoughts so far are:

- re weld a one piece pipe back in and place a damping sleeve over it

- replace with a two piece pipe with a flexible joiner

- (on the "what if" spectrum) re weld a one piece pipe in with some droppers from the top rail of the skeleton attached to it.


- I'm open to anyone's thoughts on any of the above as well as additional ideas!!!!

Cheers James
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PostPost by: rgh0 » Sun Jan 05, 2014 8:44 am

I think I would use a bulkhead compression fitting for connecting thin wall tubing through a thin wall bulkhead.
The fitting has a compression fitting each end and the middle is threaded for clamping to the bulkhead using nuts and washers on each side.

Swagelock are the type of fittings I am familiar with but there are others similar.

http://www.coleparmer.com/buy/category/ ... on-fitting

I think trying welding in this situation will always crack with vibration

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PostPost by: SJ Lambert » Wed Mar 26, 2014 9:57 am

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Welding in a repair section into top rail today.

Blasted the skeleton this afternoon. Primer tomorrow.
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PostPost by: SJ Lambert » Thu Mar 27, 2014 1:41 am

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PostPost by: Bud English » Thu Mar 27, 2014 1:51 am

That's a project and a half and coming along nicely. Do those all end up being bucked aluminum aircraft rivets or Cherry rivets?

You have to love clecos!
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PostPost by: SJ Lambert » Thu Mar 27, 2014 8:49 am

We've got Cherry rivets on hand, but are mostly using some blind Rivets from another manufacturer as they resemble the originals closely.

We're loving our 200 skin pins something fierce. Took delivery of 70 screw up ones today to compliment the Clecos.

Headed back tonight to chromate prime the skeleton. Plan to rivet tub back together Saturday morning.
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PostPost by: SJ Lambert » Thu Mar 27, 2014 12:49 pm

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