13 posts / 0 new
Last post
arthur rayner
arthur rayner's picture
Offline
Last seen: 1 week 2 hours ago
Joined: 04/01/2021
Electric Seven?!

Is this a provocative idea...or are caterham on the case already? I had a fascinating chat this afternoon with Gerry at Swindon Powertrain, and now know a lot more about EV motors/gearboxes/inverters etc, all very fascinating and seemingly not as expensive as I thought on the mechanical side, however it is battery cost that is the bugbear, which of course means overall range. Clearly in the next few years the costs will tumble. One assumes that Caterham must be on the case, any ideas anyone?

I'm thinking about electric three wheelers.

Golf Juliet Tango
Offline
Last seen: 1 hour 16 min ago
Joined: 17/04/2014

Caterham Cars say not.  There was a recent interview with Graham Macdonald; he said that the weight penalty rendered the idea out of consideration at the moment.  I think anything they are doing is being kept carefully out of sight and understand that he is playing a very straight bat.

There have been discussions here.  The easy and obvious starting point is: motor where the gearbox sits and distributed batteries to get the weight balance right.  I have heard of a variety of organisations working on it, but working confidentially.

Stephen

Democratic dissent is not disloyalty, it is a positive civic duty

Toughie
Toughie's picture
Offline
Last seen: 5 hours 43 min ago
Joined: 29/04/2016

As per GJT above.

I would add that my inference of the McDonald interview was that he was not ruling electric out, but that battery size and weight would have to be greatly improved before CC considered it feasible, but that, long term, some change was inevitable. 

But perhaps things like hydrogen cells might prove an alternative by then. I have the impression that people are beginning to give more consideration to the pollution of manufacturing batteries, electric cars simply shifting the pollution, often far more toxic, to a different location.

 

But perhaps that's an entirely new thread, and one in which I have absolutely no expertise, whatsoever.

 

Alan

Commercial Lead

Geoff Brown
Geoff Brown's picture
Offline
Last seen: 2 hours 15 min ago
Joined: 17/04/2014

The hydrogen fuel & drive train systems available seem to suit large vehicle - BMW X5 & up. Not sure how far they can be scaled down though the Hyundai Nexo looks as though this is possible even for what is a large-sh SUV. 

sforshaw
sforshaw's picture
Online
Last seen: 4 min 45 sec ago
Joined: 17/04/2014

The dimensional layout of the 7 must pose serious restrictions to anyone wanting to adapt to electric based on current battery volume technology, but the same is likely to apply to cars such as the Elise because of the lack of a transmission tunnel. By contrast, a recreation of the Caterham 21 on an electric platform with the electric motor in the tunnel could be very viable. Zero EV have an MX5 conversion with this format and the 21 layout is no different.

Roll on the all electric Caterham 21 GTO Beer

Stu.

Lotus Seven Club Leadership Team Member

The register for all numbered limited-edition Caterhams ....... www.thecaterhamregister.net ...... www.instagram.com/thecaterhamregister

Toughie
Toughie's picture
Offline
Last seen: 5 hours 43 min ago
Joined: 29/04/2016

I have to say, that whole Bauhaus "Form Follows Function" thing is surely what makes the 7 the the work of genius that has sustained its existence.

If it can be electric, what's the point of the shape it is, other than sentimentality.  The weight will likely change, even if the distribution can be artificially fiddled with.  The drivetrain wont be the same, and I doubt the handling would.

People still love Austin 7s.  Perhaps we have to look to that as our future.  How many people go to work on a horse any more, but equestrianism certainly hasn't died out.

Now I'm rambling!

Alan

Commercial Lead

Mechanical Moz
Offline
Last seen: 20 hours 16 min ago
Joined: 17/04/2014

https://youtu.be/TmIN1ltTmmE

Lotus Elan S4 DIY EV conversion.  28kWh battery capacity, 30kg lighter than it started.

I think for a Caterham putting an EV drive unit where the diff is makes the most packaging sense.  Problem with using one from an existing EV is going to be the gearing, might need to fit the wheels from that Grand Tour Caterham. 

Toughie
Toughie's picture
Offline
Last seen: 5 hours 43 min ago
Joined: 29/04/2016

Interesting, thanks.

Putting aside the, for me, sacrilege, of of making changes to the automobile equivalent of a Grade II listed building, cars like Elan make more sense than a 7 for electric, simply because their shape is much more 'jelly mould'.  An efficient aerodynamic container for the mechanicals. 

Whereas the 7 has the aerodynamics of a brick pig, but has its shape is BECAUSE of its mechanicals.  Change the mechanicals and its raison d'etre ceases.

Alan

Commercial Lead

7 wonders of th...
Online
Last seen: 58 sec ago
Joined: 17/04/2014

Geoff

Some 15 years back I drove a Fiesta with hydrogen cell, lovely car, light agile responsive, great range and quick to refuel.

 

Toughie
Toughie's picture
Offline
Last seen: 5 hours 43 min ago
Joined: 29/04/2016

Now that sounds like the alternative, to me.

Alan

Commercial Lead

Markiebabes
Markiebabes's picture
Offline
Last seen: 22 hours 27 min ago
Joined: 17/04/2014
https://youtu.be/loSHAnfykpg Worth a watch Wink Not sure if i like no induction roar though Frown

R400 Superlight Full Cage Nitrons Aero "Happiness Is A Way Of Life Not A Destination"