Lotus Elan

Light street Elan's - gutted and stript

PostPost by: garyeanderson » Tue Aug 04, 2009 1:19 pm

Jon brought up the 550kg (1212.75 lbs) light weight street Elan Coupe in the caster topic, and Patrick responded with some questions. Seeing Ed is giving a lesson in that topic I thought a new one might be needed. When I built up the S2 I brought it to the commercial landfill, the weight was 1260 lbs with hardtop minus the bonnet (left at home) and a couple gallons of fuel. I don't remember if the spare was in the Elan or not. I asked the weigh bridge operator on accuracy and his responce was "within 10 pounds". I don't know the weight at the moment the alloy bits are out, but so is the hardtop and a seat.
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Anyone else have there Type 26, 36, or 45 on a starvation diet. I would like to hear about stripped and gutted Plus2's, there has got to be at least a couple hundred pounds in one that isn't really nessessary.
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PostPost by: andyelan » Tue Aug 04, 2009 5:34 pm

Hi There

A little while ago I had my Plus 2 on the scales and it weighs 1791 lbs (814Kg) distrbuted 49.7% front and 50.3% rear. This is a completly standard 1973 Plus 2S 130/5 with all fluids and 1 gallon of fuel in the tank.

I found this quite interesting as contempory road test generally quoted between 1880lbs and 1960lbs for the Plus 2, so my car actually appears to be a good bit lighter than it's supposed to be.

Andy
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PostPost by: elandoc » Thu Aug 06, 2009 4:28 am

A chocolate frog to anyone who can get to 500Kg!
Patrick
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PostPost by: cliveyboy » Thu Aug 06, 2009 6:57 am

Just been reading an article on the KTM X-Bow Clubsport.
A track car that has been made road legal. It uses a Golf GTi engine. Body is carbon fibre,plastic and metal.
It states its only 805Kg. Thats Obese
My Sprint with driver does not weigh that.
Where on earth does all the weight come from?

Clive
1972 Elan Sprint FHC
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PostPost by: garyeanderson » Thu Aug 06, 2009 8:03 am

elandoc wrote:A chocolate frog to anyone who can get to 500Kg!
Patrick


To get sub 500kg would be a bit of work, I mean the money to buy the parts. I don't think its that difficult. With 26/4597 1260lbs is 572kg, and the first thing to go would be the stock seats and replace with a kart seat. The hardtop would go too. New tires like Avon abc10 or Hoosier dot. I am kind of partial to the windscreen for a street car and I like safety glass too, new screens are lighter than original ones. I don't think there is any way with out an alloy block unless your not going to use a twin cam. I would swap out the garden tractor battery behind the seat install a smaller one, I would also move it up into the RHS footwell (LHD) next to the starter and loose the 8 ft of 4 guage copper. These changes would drop an estimated 35 kg, getting the next 35 plus kg will be harder. All of those heavy duty parts in the rears come back out, CV's are heavy, sprint donuts and early drive shafts go back in and the quafe torsen is out too. Might as well take out the Tony Thompson axles and hubs too and put stock ones back in. Still 25 kg away, a call to tony for some race weight doors, boot, bonnet. the big Scirroco radiator could be swapped for something a bit smaller as the alloy block with radiate a bit. Still need alloy hubs in front and alloy calipers at all 4 corners. The Dave Bean alternator is history too and one of the ones from a garden tractor swapped in.
http://home.hiwaay.net/~langford/corvair/dynamo.html
If the above doesn't get there, then another call to Tony for a mid weight or race weight body and a bit of magnesium for that last push to sub 500 land.

The next milestone for a street Elan will be sub 1000 lbs, probably not affordable at least not with the twin cam and Ford box.
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PostPost by: Jas » Thu Aug 06, 2009 1:12 pm

... and next for the driver to get down to F1 feather weight, or is it easier to buy more magnesium and carbon fibre :twisted:
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PostPost by: rodbean » Thu Aug 06, 2009 6:40 pm

Gary, thanks for the light weight alternator link. Still using the old generator with no problems but what a weight savings!

The word "Corvair in the link address intrigued me so I looked at the pre-alternator part of the site. That is certainly an interesting aviation use Corvair engine!

This is all nostalgic to me because my first race car was a Yenko Stinger (Corvair). I had to learn all about Corvairs. Fortunately, I had several Corvair-driving friends I knew from slaloming (autocrossing) who jumped right in to help when I decided to go racing. Eventually, I more or less knew what I was doing with respect to road racing a Corvair.

Do you have any involvement in this aircraft project?

To keep the non-Elan content down, you can PM me at [email protected].

Rod Bean
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PostPost by: jkolb » Fri Aug 07, 2009 2:03 am

Check out the Powermaster 8162. http://www.powermastermotorsports.com/d ... ators.html

Simple one wire hookup means you get to lose the weight and bother of the regulator. I used with the multiple grooved pulley set from Bean. Modified the lower generator mount and spaced out from the block with an adjuster with a tube body and two aluminum heim joints. This is a bit heavier than the John Deere unit, but is designed for auto racing and has been built very rugged.

Jerry
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PostPost by: mopho » Fri Aug 07, 2009 2:13 am

My Elan S3 weighs 1440lbs with gas. Removed heater, side windows and frames, electric window lifts, radio spare tire, convertible top, and some carpeting. Also has an aluminum radiator. Possible added weight: CV axles, roll bar and alternator.
S3 body is heavier apparently.

My Caterham 7 weighs 1240lbs with gas
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PostPost by: denicholls2 » Tue Sep 01, 2009 10:00 pm

Well, I guess if it's "Unsafe at any speed", then you may as well go as fast as you can. :D

rodbean wrote:Gary, thanks for the light weight alternator link. Still using the old generator with no problems but what a weight savings!

The word "Corvair in the link address intrigued me so I looked at the pre-alternator part of the site. That is certainly an interesting aviation use Corvair engine!

This is all nostalgic to me because my first race car was a Yenko Stinger (Corvair). I had to learn all about Corvairs. Fortunately, I had several Corvair-driving friends I knew from slaloming (autocrossing) who jumped right in to help when I decided to go racing. Eventually, I more or less knew what I was doing with respect to road racing a Corvair.

Do you have any involvement in this aircraft project?

To keep the non-Elan content down, you can PM me at [email protected].

Rod Bean
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Orange County, CA
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