Lotus Elan

Aluminum prop shaft?

PostPost by: h20hamelan » Sat Jan 25, 2020 5:49 pm

Working on a T5 conversion for the +2, considering what needs to be done.
If I need to change the propellor shaft, would I not use aluminium. (Ford Aerostar fits my Volvos nicely)

https://www.dennysdriveshaft.com/c3_alu ... hafts.html

I am sure there are others, MG owners seem use these people.
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PostPost by: msd1107 » Sat Jan 25, 2020 11:09 pm

You can also get carbon fiber drive shafts. Circle track racers use them.
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PostPost by: h20hamelan » Sun Jan 26, 2020 1:22 am

The carbons are a bit more money, actually, about 4x more.

Pirated info

What's the Difference Between Carbon Fiber and Aluminum?

When it comes to building strong and light parts inexpensively, aluminum is a great choice. It’s an economic and stiff material that many performance parts are made of. With recent developments, however, more and more parts are being made out of an even lighter material: carbon fiber. While carbon fiber is lighter than aluminum, it’s also much more expensive.

Steel driveshafts are stock for noise and vibration dampening
Light weight alternatives “free up horsepower” by letting the engine rev faster
Aluminum driveshafts can drop about ten pounds from your “Lotus”
Aluminum driveshafts are significantly cheaper than their carbon cousins
Carbon fiber driveshafts are stronger than aluminum and produce less noise
Carbon fiber is also safer to run because when aluminum fails it shatters whereas carbon fiber shears
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PostPost by: 2cams70 » Sun Jan 26, 2020 6:37 am

I think some cars mainly use Aluminium driveshafts in order to change the natural frequency of vibration so that it occurs outside the operating speed range of the shaft for improved NVH.
1970 Ford Escort Twin Cam
1972 Ford Escort GT1600 Twin Cam
1980 Ford Escort 2.0 Ghia
Peugeot 505 GTI Wagons (5spdx1) (Autox1)
2015 Honda City 5spd.
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