Lotus Elan

Making an aluminium flywheel

PostPost by: SJ Lambert » Mon Jan 06, 2020 12:58 pm

FF641887-541D-4A33-9D60-9D1CF69CA53E.jpeg and


We?ve finally gotten around to chucking up the aluminium plate I bought years ago - we?re going to fit a Fidanza clutch insert & a Renault Dauphine ring gear and machine it to suit a lip seal crank
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PostPost by: Davidb » Mon Jan 06, 2020 7:23 pm

Just a simple job! ;)

For those looking for an aluminium flywheel for their Elans: I searched high and low and finally called Fidanza since they no longer show them in their catalogue-the salesman said "Oh, we have those on the shelf" ! and sent me one-in exchange for about $350. Nice quality and works well.
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PostPost by: SJ Lambert » Mon Jan 06, 2020 7:48 pm

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PostPost by: SJ Lambert » Mon Jan 06, 2020 7:51 pm

This one will have an AP clutch cover fitted when finished



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PostPost by: 1owner69Elan » Tue Jan 07, 2020 7:53 am

Davidb wrote:Just a simple job! ;)

For those looking for an aluminium flywheel for their Elans: I searched high and low and finally called Fidanza since they no longer show them in their catalogue-the salesman said "Oh, we have those on the shelf" ! and sent me one-in exchange for about $350. Nice quality and works well.

Good price. I have the Fidanza flywheel as well. I paid substantially more.

Saves 7.5 pounds over stock one. No loss of drivability on the street. Lends itself to a free revving engine.
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PostPost by: Davidb » Tue Jan 07, 2020 4:43 pm

Oneowner: Something to consider that did not occur to me when I was building the engine. The crankshaft that I put in my engine is a fully counterweighted, 76mm stroke item that is ex Formula Atlantic--I seem to think that you are using a similar design crankshaft? I weighed the crankshaft and compared it to a stock 72mm stroke cast crank recently. It is about 8 lbs heavier. I weighed the two cranks because I was trying to figure out why the engine in my car was not far more " revvier" despite having an aluminium flywheel. I presume the extra rotational weight coupled with the longer stroke makes the difference?
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PostPost by: el-saturn » Tue Jan 07, 2020 9:55 pm

i wasn't aware it was so much!? i'm glad i got this forged farndon 10 years ago. it's almost indentical to the casted ones but forged with the better performance and saves lots of weight. mine was once in a works lotus 23. sandy
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PostPost by: h20hamelan » Thu Jan 09, 2020 8:57 am

SJ Lambert wrote:
867B44F0-D450-4CBE-AB21-229ADE8D52F1.jpeg


What is the weight Mr. Lambert
Guess about 9lbs lighter?

Cheers down under mate
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PostPost by: SJ Lambert » Sun Jan 12, 2020 2:38 pm

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As Chunky would say, we?re still ?adding lightness?! By doing a bit of heavy lifting with Walter the Indexing Table to get there!

I?ll weigh it in the next day or two & let you know!
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PostPost by: SJ Lambert » Sun Jan 12, 2020 2:42 pm

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PostPost by: SJ Lambert » Sun Jan 12, 2020 2:43 pm

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PostPost by: SJ Lambert » Sun Jan 12, 2020 2:47 pm

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PostPost by: nmauduit » Sun Jan 12, 2020 3:13 pm

wow that is some lathe here... could even machine a flywheel for a caterpillar!
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