Lotus Elan

S3 boot hinge brace

PostPost by: davidj » Sun Jan 17, 2021 2:32 pm

Good afternoon,

Should there be any additional brace or strengthening plate running between the two boot hinge studs on the S3 or any support running from the hinge mount to the boot floor? I have read one or two vague references but may have misunderstood. I was planning to replace the short studs with longer ones and large washers to fix the hinges onto the body but thought I better check first. I cannot find any reference in Brian Buckland's book.

Cheers.

David
davidj
Third Gear
Third Gear
 
Posts: 380
Joined: 09 Apr 2008

PostPost by: TBG » Sun Jan 17, 2021 3:45 pm

David, are you talking about the single bolt that attaches the hinge to the body or the two bolts that bolt the hinge to the boot lid?

This is mine with the support for the boot hinge- reinforced as it is a weak point.

Boot hinge.jpg and


France 1996 (23).jpg and
TBG
Third Gear
Third Gear
 
Posts: 360
Joined: 21 Apr 2020
Location: Somerset, England

PostPost by: davidj » Sun Jan 17, 2021 5:12 pm

Thanks for your reply. I vaguely remember hearing about a strengthening bar between the studs which connect the two hinges onto the body. However, you don't look to have such a bar so I guess I was mistaken. I have also seen a support from the RH side hinge to the boot floor, but you don't look to have one either.

Cheers.
davidj
Third Gear
Third Gear
 
Posts: 380
Joined: 09 Apr 2008

PostPost by: mbell » Sun Jan 17, 2021 5:36 pm

The +2 has such a brace, not sure if such a thing was ever fitted to the elan.
'73 +2 130/5 RHD, now on the road and very slowly rolling though a "restoration"
mbell
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1878
Joined: 07 Jun 2013
Location: Austin, TX (UK Ex-pat)

PostPost by: ericbushby » Sun Jan 17, 2021 5:46 pm

Hi David,
I also have heard about a steel strip between the hinges on the body side of the hinge.
There is not room for one on my S3 as a stiffener tube about 3/4" diameter has been glassed in there to serve the same purpose. At the ends it turns forward a short distance along the wing.
I was once told that one of the major dealers and repairers used to do this to any that went through there workshop.
I was still concerned about the amount of flexing in this area. I fitted a diagonal rod from the back of the hinge plate to the wheel arch and this seems to work well. Unfortunately, I have not found the photo, it is in here somewhere.
I also modified the shape of the spring retainer to reduce the effort required to operate it as it passes over the bobbin.
Hope this helps
Eric in Burnley
1967 S3SE DHC
ericbushby
Fourth Gear
Fourth Gear
 
Posts: 962
Joined: 13 Jun 2011
Location: east lancashire

PostPost by: Mazzini » Sun Jan 17, 2021 5:58 pm

The S3 had a GRP brace glassed (could be paper rope) in between the hinges. You can probably feel it with your fingers. You can see it in David's post.

The S4 and Sprint, probably as a cost saving exercise, had a metal brace with a bit of under felt stuffed between the brace and the body. The paper rope was deleted. The right mount of under felt gives the correct curve on the flat panel...simplify and add lightness...
User avatar
Mazzini
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 2022
Joined: 11 Dec 2010
Location: NE UK

PostPost by: oldelanman » Sun Jan 17, 2021 6:23 pm

Mazzini wrote:The S3 had a GRP brace glassed (could be paper rope) in between the hinges. You can probably feel it with your fingers. You can see it in David's post.

The S4 and Sprint, probably as a cost saving exercise, had a metal brace with a bit of under felt stuffed between the brace and the body. The paper rope was deleted. The right mount of under felt gives the correct curve on the flat panel...simplify and add lightness...


My S4 has the GRP brace ...... quite substantial but certainly not pretty.

Boot hinge area 008.jpg and
Roger
S4 DHC
oldelanman
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1746
Joined: 02 Jan 2008
Location: Dorset UK

PostPost by: Mazzini » Sun Jan 17, 2021 6:31 pm

Interesting! What year is your S4? I have a '72 Sprint with the brace and under felt.

I suppose it just goes to show that there are no rules on our hand built cars :-)
User avatar
Mazzini
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 2022
Joined: 11 Dec 2010
Location: NE UK

PostPost by: oldelanman » Sun Jan 17, 2021 6:59 pm

It was gate released from the factory and registered in Feb '71 but built somewhat earlier, I don't know the exact production date.
Roger
S4 DHC
oldelanman
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 1746
Joined: 02 Jan 2008
Location: Dorset UK

PostPost by: davidj » Sun Jan 17, 2021 7:07 pm

As always, thanks for all your replies, and confirms my original understanding, be it on later cars than mine. S3 glassed paper rope. S4 and Sprint, structural underfelt! ;-)

Ta.
davidj
Third Gear
Third Gear
 
Posts: 380
Joined: 09 Apr 2008

PostPost by: ChrisD » Sun Jan 17, 2021 9:37 pm

Hello David,

I wanted to strenhgen this very weak section on my car and fitted a steel support.
This works well. No danger of cracks to be expected.

Regards, Christian
Attachments
20210117_223058.jpg and
ChrisD
First Gear
First Gear
 
Posts: 15
Joined: 22 Jan 2018
Location: Germany

PostPost by: ericbushby » Sun Jan 17, 2021 10:02 pm

Hi David,
I have found some pictures, not mine but similar.
Type` boot hinge support` into the search box. Post No 1 gives some good ideas.
Cheers
Eric in Burnley
ericbushby
Fourth Gear
Fourth Gear
 
Posts: 962
Joined: 13 Jun 2011
Location: east lancashire

PostPost by: gjz30075 » Sun Jan 17, 2021 10:04 pm

Similar here, too. My Sprint has the full width angle iron and I fabricated a support piece for
further strengthening. My fabricated piece is copied from another Forum member who
indicated it might be a factory mod.
Attachments
SAM_4551.JPG and
SAM_4550.JPG and
Greg Z
45/0243K Sprint
36/5727 pre airflow coupe
User avatar
gjz30075
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 3068
Joined: 12 Sep 2003
Location: Roswell, Georgia, USA

PostPost by: pharriso » Sun Jan 17, 2021 10:59 pm

davidj wrote:As always, thanks for all your replies, and confirms my original understanding, be it on later cars than mine. S3 glassed paper rope. S4 and Sprint, structural underfelt! ;-)

Ta.


No!! Here's a print I made up of the brace on S4s & Sprints...
LotusElan_BootHingeBrace.pdf
(38.55 KiB) Downloaded 66 times


Sue (Miller) sometimes carries them.
Phil Harrison
1972 Elan Sprint 0260K
User avatar
pharriso
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 3098
Joined: 15 Sep 2010
Location: Long Island NY, USA

Total Online:

Users browsing this forum: No registered users and 8 guests