Lotus Elan

Twin Cam technical drawing never seen before!

PostPost by: PaulFinch » Wed Nov 07, 2018 8:30 am

I’d love one too
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PostPost by: Elanman68 » Wed Nov 07, 2018 11:41 am

Although no confirmation from Al if there is any intention of a print being available. If there was to be a print run I'd also very much like one please :D .
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PostPost by: promotor » Wed Nov 07, 2018 9:29 pm

Thank you all for the kind words and overwhelming interest in the drawing of my Dad's - he is surprised so many people like it! Based on the interest shown he would like to offer a few lines for those interested parties :

"As the person responsible for the sketch, which has appeared online after my son Alistair took a photo and posted it, and following the interest it appears to have aroused, I would like to make a few points about it to clarify what interested parties may feel they have seen.
It was created as a personal point of interest in our little workshop for my two sons and friends. It was never intended to be a commercial project.
I have no technical drafting or artistic abilities. The whole thing was drawn up using Microsoft Paint in Windows 7 and as such cannot be described as high definition or CAD like, due to the relatively low resolution of the pixel size available in Paint. Upon close examination of the AO sized print all lines and curves which are not vertical or horizontal exhibit jagged contours to some greater or lesser degree. Nonetheless the bitmapped image (BMP) file is larger than 1 gigabyte and converted to JPEG is 71 megabytes. It is NOT to scale and cannot be termed an engineering drawing in the wake of such masterpieces in past “Motorsport” magazines by the likes of Terry Collins. To qualify that I include below my statement, which appears in the bottom left of the image. As Alistair stated, actual component parts were used to gain some limited accuracy and proportion. All text is in block capitals of varying font sizes.
I understand that you may not be motivated to read everything I have to say but I am trying to be truthful and informative in order that the most welcome comments received may be tempered with more detail which will allow anyone interested to make a more informed decision as to whether they wish to proceed any further. Any prints will be done professionally by a local printer using a large commercial Fujifilm printer, paper and ink. Paper is heavyweight archival Lustre/Satinof at least 270 grammes/metre squared or maybe 340 grammes. I could have that confirmed. The size of the current print is the largest they can do at size A0 (841mm x 1189mm -33.1inches x 46.8 inches. The sketch fits tightly to the margins and so would require an AO frame with very narrow margin construction. Smaller size prints will not allow all small detail to be clearly seen. I am using Neilson aluminium frames with a 9 mm mount thickness and acrylic sheet protection, as glass would be very heavy. Framing would be down to the purchaser.
I understand that Mark Kempson of “LotusCortinaInfo.com” will be visiting Alistair in thevery near future and that he has said he wants a print. My suggestion to others would be to wait until he has one in his possession and then contact him to gain his opinion before deciding for yourself.
Text in bottom left. All in Block caps:-
Heading “Representation of mechanical layout for a Mk 2 Cortina Lotus”
Body “Engine has a six bolt crank with full oilseals. Power is increased from the Mk 1 Lotus of 105 bhp to 115 bhp gross. Gearbox is a cast iron semi-close ratio unit and is commonly referred to as the 2000E box since it was designed for the Corsair 2000E V4 unit. This gearbox was also used in the Mk. 2 Cortina GT, 1600E, Mk. 1 Escort Twin Cam and some Elans. Elans having the Ford 4 speed box had the above ratios but in a standard Cortina box with no remote change.
Note:- This sketch is an attempt at reasonable accuracy but it is not to scale and does not represent Ford/Lotus engineering design accuracy. It is a schematic only. Ron Whitehouse October 2018. Drawn using Microsoft “Paint” in Windows 7.”

Other Texts are:- again in block capitals
1. Main Heading – “Ford and Lotus - The beginning -
Body “Ford produced the 105E 997cc short stroke oversquare engine in 1959. In 1960 Colin Chapman commissioned Harry Mundy to design a twin overhead camshaft cylinder head with two valves per cylinder. Mundy was paid £200. Detail design was handed to Richard Ansdale, a friend of Chapman. Once he had finished the drawings production was given to Lotus man Steve Sanville. First engine was a 1340cc unit. Chapman was in a hurry, and problems developed. A 1500cc engine was built in May 1962, but proved to be unreliable. Chapman was about to release the Elan but still had no viable engine. Eventually Keith Duckworth of Cosworth was brought in to solve the many problems. Ford was sufficiently impressed with Cosworth’s work that their subsequent partnership resulted in the BDA, DFV and Cosworth Sierra projects. – The rest is history!”
2. “Water pump detail”
Body “The water pump uses original Anglia/Cortina main revolving parts, bearing assy. Impeller, seal and slinger ring fitted into the front cover together with an adaptor ring with two “O” rings to seal between front cover and thin back plate to prevent coolant leaking into crank case.
3. “Piston detail”
Body “Pistons as factory standard are cast tin plated aluminium alloy with solid skirts and fully floating gudgeon pins. Slight cut-outs in in crown prevent valve contact over top dead centre when total valve timing overlap of 52 degrees may allow contact of valves/pistons if valve timing is not accurate.
Cold piston clearance in bore is 0.0030” to 0.0036”. Gudgeon pin offset is 0.040” towards thrust side.
Top ring is chrome plated
Second ring angled cutaway on periphery reduces surface area as wear takes place, but contact load increases.”

Included are two tables. One of brief specifications and the second of all bolt/nut tightening torques in lbs.ft and Newton metres and includes Weber carb to manifold nut/washer setting clearance . A colour key identifies coolant, lubrication, air fuel mixture, combustion etc. Internal operation of oil pump and fuel pump are included.

After checking the postage costs - and the availability of H/Duty 3 mm thick tubes 35 inches long x 4inches inside diameter (to allow for safe postage and/or storage) - the overall cost to purchase one AO print as described above for UK residents (other than Ireland and some Scottish areas) together with postage to you will be £75.00. At that price there is only a minimum of £20 compensation. If you wish to increase insurance coverage then this can be arranged at cost to you. Of course if you wish to pick-up in person that is not a problem at all, and the price would be £63.
Please also note that I have been advised by my printing expert that printing costs are due to increase by 30% in the near future so the purchase price above will increase (although not by 30% of the total, but by 30% of my printing costs).
Currently I have not priced postage costs to areas where people have shown interest such as Europe, USA, Canada and Australia. I may investigate costs if people are still interested.

Unfortunately I won’t be making the file of the drawing available for distribution.

I include a part of my drawing below to show the issues that I hoped to make you aware of in the above text. The part drawing is exactly the same size (ie 1:1) as it is on the 120x85cm print shown in Alistair’s initial photo. The paper used for the illustration is also the same paper that will be used in any final prints.

Thank you for taking the time to read these words."

dsc03773.jpg and

If anybody is still interested in having one of these prints done please PM with your request and I'll get back to you as soon as I / we can.
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PostPost by: Davidb » Thu Nov 08, 2018 1:02 am

I am still interested-what would the shipping cost to Vancouver, Canada be?
Last edited by Davidb on Thu Nov 08, 2018 2:22 am, edited 1 time in total.
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PostPost by: bitsobrits » Thu Nov 08, 2018 2:05 am

Still interested. Am in the U.S.

Elan S1 1963-Bourne Bodied
Elan S3 1966 FHC
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PostPost by: promotor » Thu Nov 08, 2018 6:41 am

In case you got lost in the long post from the artist, the drawing is not Elan specific - the drawing was done to be centred around the Mk2 Cortina Twincam due to the previous drawing of a correct 2000e gearbox and our interest in the Mk2 Cortina (and also not owning an Elan).

I'll write a response regards international postage once this has been looked into further.


Al / Ron
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PostPost by: englishmaninwales » Thu Nov 08, 2018 9:12 pm

+1 please!
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PostPost by: promotor » Thu Nov 08, 2018 10:01 pm

I have looked at postage costs to USA, Canada and Australia - we would be able to offer the drawing - including postage to your door - for :

£98 to USA and Canada
£99 to Australia.

Postage will be with one of the big couriers such as Fed-Ex, DPD etc.

The price includes a sturdy transport tube as mentioned in my above post. These prices are reflective of current courier and printing prices only.

Al / Ron
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PostPost by: 7skypilot » Fri Nov 09, 2018 10:44 am

PM sent, Don
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PostPost by: vstibbard » Sat Nov 10, 2018 7:03 am

I'm up for one to Australia, let me know how you would like to be paid..


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PostPost by: h20hamelan » Sat Nov 10, 2018 7:48 am

Any way to ex the shipping and offer an email with a jpeg tiff image so we could print locally?
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PostPost by: promotor » Sat Nov 10, 2018 10:06 am

h20hamelan wrote:Any way to ex the shipping and offer an email with a jpeg tiff image so we could print locally?

Sorry the file isn't being made available, I hope you understand why this make sense (to us at least).
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