Lotus Elan

Lotocone to damper mounting

PostPost by: steve.thomas » Wed Sep 24, 2014 4:42 pm

Hi
I recently bought new lotocones and AVO rear damper inserts for a Plus2. The nut on the end of the damper spindle has a shoulder that I assume should fit into the lotocone to centalize it, but its slightly too big. Anyone know if this is a common issue, and is the solution to enlarge the hole? I haven't removed the old parts from the car yet, so can't compare them, but I know i currently have a castellated nut and split pin that won't be interchangeable with the AVO insert.
Thanks
Steve
steve.thomas
Second Gear
Second Gear
 
Posts: 107
Joined: 24 Jun 2010
Location: Gironde, France

PostPost by: worzel » Wed Sep 24, 2014 6:45 pm

Hi

If the clearance issue isn't much I'd take some metal off the shoulder of the nut rather than alter the lotocone.

if you're in no hurry I've loads of castellated nuts (does affect the way I walk) and I might have 2 you need but I'd need the exact dimensions and the thread type/size.

if I've got some you can have them for free if you pay the postage costs.

regards

john
worzel
Fourth Gear
Fourth Gear
 
Posts: 696
Joined: 13 Jan 2004

PostPost by: RichardHawkins » Wed Sep 24, 2014 8:13 pm

Steve,

My new lotocones had excess rubber, which I think was where the nut should fit, but not sure now.

It might be worth checking, as if I remember correctly the whole thing was painted black and I could not tell where rubber finished and steel started.

Richard Hawkins
RichardHawkins
Fourth Gear
Fourth Gear
 
Posts: 758
Joined: 05 Jul 2008
Location: Lincolnshire U.K.

PostPost by: au-yt » Wed Sep 24, 2014 8:34 pm

I am doing exactly the same job only to replace the rear springs and lotocones on my 71 sprint.
There is plenty on clearance for the step on the castelated nut to be located. may be I am lucky with the new parts.
A question while we are on the subject. the bolts that hold the lotocones do they have a 2.5mm thick head?

Graeme
LOTUS Evora 400
Caterham 7 TC
66 one-off 2.6Ltr v8 Mid-engine Berlinetta Coupe........... in restoration
..................................................Age doesn't matter unless you are a cheese................................................
au-yt
Second Gear
Second Gear
 
Posts: 176
Joined: 11 Mar 2014
Location: Escaped Sydney Australia

PostPost by: rgh0 » Wed Sep 24, 2014 11:07 pm

Hi Graeme
The original bolts installed by Lotus had the thin head, I presume for clearance with the spring top plate. With the small diameter springs I use hex socket headed cap screws as you can remove and fit them more easily

cheers
Rohan
User avatar
rgh0
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 7484
Joined: 22 Sep 2003
Location: Melbourne, Australia

PostPost by: au-yt » Thu Sep 25, 2014 1:44 am

Rohan I have replicated the originals including a small centre hole in the head incase I need to drill them out...again... in the future.
LOTUS Evora 400
Caterham 7 TC
66 one-off 2.6Ltr v8 Mid-engine Berlinetta Coupe........... in restoration
..................................................Age doesn't matter unless you are a cheese................................................
au-yt
Second Gear
Second Gear
 
Posts: 176
Joined: 11 Mar 2014
Location: Escaped Sydney Australia

PostPost by: rgh0 » Thu Sep 25, 2014 3:04 am

I had the same issue originally with my Elan many many years ago as it was an English import also !!. Plenty of antosieze and you should be Ok in Australia
User avatar
rgh0
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 7484
Joined: 22 Sep 2003
Location: Melbourne, Australia

PostPost by: au-yt » Thu Sep 25, 2014 7:48 am

Yes plenty of a good grease helps, Surprisingly the entire chassis was sprayed years ago with an under body sealer and some areas have surface corrosion mainly from heat, Lotocone bolts on the other hand...
Does any one else have this type of bolt head. The one on the right is a factory original.

IMG_0947.JPG and
LOTUS Evora 400
Caterham 7 TC
66 one-off 2.6Ltr v8 Mid-engine Berlinetta Coupe........... in restoration
..................................................Age doesn't matter unless you are a cheese................................................
au-yt
Second Gear
Second Gear
 
Posts: 176
Joined: 11 Mar 2014
Location: Escaped Sydney Australia

PostPost by: steve.thomas » Thu Sep 25, 2014 8:09 am

Many thanks for the quick replies, and to John for the offer of nuts! I can't use a castellated nut though, because the AVO dampers are adjustable via a small screw at the end of the spindle and therefore not drilled for a split pin. The nuts supplied are nylock type nuts and i'll file the shoulder down a bit - it doesn't need much metal removing. It may be that tightening the nut would force it into the lotocone, but given where it is i'd never really know if had had gone in fully and centrally, so want to get it fitting well beforehand.

Regarding the lotocone mounting bolts, I bought some new ones from Sue Miller, anticipating trouble getting the old ones out. They have full size heads, and Sue was aware of the difference and commented that they don't seem to interfere with anything else. I won't be doing the job for a few weeks so can't comment further.
Regards
Steve
steve.thomas
Second Gear
Second Gear
 
Posts: 107
Joined: 24 Jun 2010
Location: Gironde, France

Total Online:

Users browsing this forum: No registered users and 15 guests