Lotus Elan

Steering Column

PostPost by: Steve Crook » Mon Apr 14, 2003 11:02 am

Has anyone had a similar failure to this?
An Elan+2S 130 was brought to me (on a trailer) with failed steering, on
examination it could be seen that the end of the top or steering wheel
section of the two piece shaft had sheared at the clamp which is fitted to
control the telescopic action required for crash protection ie the cut away
piece where the clamp fits down in the footwell. The shaft had snapped
completly off at the clamp, luckily when the car was being pushed (yes it is
a Lotus) my concern is has this occured to other cars and is this a failure
point?. The car had been involve in a minor accident to the right front and
while there was some body damage the wheel, a Lotus alloy, appears ok
although there are signs of slight damage to the tyre. Has anyone else had a
similar failure or can this be put down to the accident damage?

Steve Crook
Steve Crook
Second Gear
Second Gear
 
Posts: 68
Joined: 10 Nov 2003
Location: South Africa

PostPost by: "Sean Murray" » Mon Apr 14, 2003 6:44 pm

Hi Steve,

Have you had a good look at the fracture, is it a clean break or is there any evidence of a previous cracking which would indicate contributory fatigue failure.

The less-than -solid mounting of the short steering tube in the +2 does not help to avoid putting the shaft under stress at this point.
One reason I reinforced this area.

Sean Murray
----- Original Message -----
From: Steve Crook
To: ***@***.***
Sent: Monday, April 14, 2003 11:57 AM
Subject: [LotusElan.net] Steering Column


Has anyone had a similar failure to this?
An Elan+2S 130 was brought to me (on a trailer) with failed steering, on
examination it could be seen that the end of the top or steering wheel
section of the two piece shaft had sheared at the clamp which is fitted to
control the telescopic action required for crash protection ie the cut away
piece where the clamp fits down in the footwell. The shaft had snapped
completly off at the clamp, luckily when the car was being pushed (yes it is
a Lotus) my concern is has this occured to other cars and is this a failure
point?. The car had been involve in a minor accident to the right front and
while there was some body damage the wheel, a Lotus alloy, appears ok
although there are signs of slight damage to the tyre. Has anyone else had a
similar failure or can this be put down to the accident damage?

Steve Crook
"Sean Murray"
 

PostPost by: "Steve Holst" » Mon Apr 14, 2003 9:52 pm

I purchased a 69' Plus 2 project car that had taken a substantial impact to
the LH front wheel. The inner column had actually twisted quite a bit from
the blow. The outer column was fine. Other damage included a bent frame at
the steering rack mounting location. Not sure if this is helpful info but
it's what happened to my car when it took a solid blow to the steering.

Steve

----- Original Message -----
From: "Steve Crook" <***@***.***>
To: <***@***.***>
Sent: Monday, April 14, 2003 3:57 AM
Subject: [LotusElan.net] Steering Column


Has anyone had a similar failure to this?
An Elan+2S 130 was brought to me (on a trailer) with failed steering, on
examination it could be seen that the end of the top or steering wheel
section of the two piece shaft had sheared at the clamp which is fitted to
control the telescopic action required for crash protection ie the cut
away

piece where the clamp fits down in the footwell. The shaft had snapped
completly off at the clamp, luckily when the car was being pushed (yes it
is

a Lotus) my concern is has this occured to other cars and is this a
failure

point?. The car had been involve in a minor accident to the right front
and

while there was some body damage the wheel, a Lotus alloy, appears ok
although there are signs of slight damage to the tyre. Has anyone else had
a

similar failure or can this be put down to the accident damage?

Steve Crook













"Steve Holst"
 

PostPost by: lotuselan2 at aol.com » Mon Apr 14, 2003 11:47 pm

My only problem with a fully restored +2 steering is that if the clamp slips
down a bit I honk the horn under hard braking!! One needs to leave enough
play at the top of column that small steering wheel deflections do not make
the horn contact.

The failure you speak of is really SCAREY!
Ken
'69 +2 with Cosworth BDR
lotuselan2 at aol.com
 

PostPost by: gobw2 » Tue Apr 15, 2003 2:33 am

Hmm - isn't this the same setup we have in our "baby " Elans??? I never
did think much of that setscrew in the clamp business to hold the shaft &
tube together. George 67 S3 ( guess I will add checking shaft to list)

On Mon, 14 Apr 2003 19:43:37 +0100 "Sean Murray" <***@***.***>
writes:
Hi Steve,

Have you had a good look at the fracture, is it a clean break or is
there any evidence of a previous cracking which would indicate
contributory fatigue failure.

The less-than -solid mounting of the short steering tube in the +2 does
not help to avoid putting the shaft under stress at this point.
One reason I reinforced this area.

Sean Murray
----- Original Message -----
From: Steve Crook
To: ***@***.***
Sent: Monday, April 14, 2003 11:57 AM
Subject: [LotusElan.net] Steering Column


Has anyone had a similar failure to this?
An Elan+2S 130 was brought to me (on a trailer) with failed steering,
on
examination it could be seen that the end of the top or steering wheel
section of the two piece shaft had sheared at the clamp which is fitted
to
control the telescopic action required for crash protection ie the cut
away
piece where the clamp fits down in the footwell. The shaft had snapped
completly off at the clamp, luckily when the car was being pushed (yes
it is
a Lotus) my concern is has this occured to other cars and is this a
failure
point?. The car had been involve in a minor accident to the right front
and
while there was some body damage the wheel, a Lotus alloy, appears ok
although there are signs of slight damage to the tyre. Has anyone else
had a
similar failure or can this be put down to the accident damage?

Steve Crook
gobw2
Fourth Gear
Fourth Gear
 
Posts: 968
Joined: 25 Sep 2003

PostPost by: Steve Crook » Tue Apr 15, 2003 2:50 pm

thanks will have a look tonight and report back.

Steve
----- Original Message -----
From: "Sean Murray" <***@***.***>
To: <***@***.***>
Sent: Monday, April 14, 2003 8:43 PM
Subject: Re: [LotusElan.net] Steering Column


Hi Steve,

Have you had a good look at the fracture, is it a clean break or is there
any evidence of a previous cracking which would indicate contributory
fatigue failure.

The less-than -solid mounting of the short steering tube in the +2 does not
help to avoid putting the shaft under stress at this point.
One reason I reinforced this area.

Sean Murray
----- Original Message -----
From: Steve Crook
To: ***@***.***
Sent: Monday, April 14, 2003 11:57 AM
Subject: [LotusElan.net] Steering Column


Has anyone had a similar failure to this?
An Elan+2S 130 was brought to me (on a trailer) with failed steering, on
examination it could be seen that the end of the top or steering wheel
section of the two piece shaft had sheared at the clamp which is fitted to
control the telescopic action required for crash protection ie the cut
away
piece where the clamp fits down in the footwell. The shaft had snapped
completly off at the clamp, luckily when the car was being pushed (yes it
is
a Lotus) my concern is has this occured to other cars and is this a
failure
point?. The car had been involve in a minor accident to the right front
and
while there was some body damage the wheel, a Lotus alloy, appears ok
although there are signs of slight damage to the tyre. Has anyone else had
a
similar failure or can this be put down to the accident damage?

Steve Crook














Steve Crook
Second Gear
Second Gear
 
Posts: 68
Joined: 10 Nov 2003
Location: South Africa

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