Re: [DML] Getting rid of trailing arm setup (was Stainless Frame Feature
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Re: [DML] Getting rid of trailing arm setup (was Stainless Frame Features)

Hey Martin,

Thanks for the info. I was actually going to email you and ask if you 
still had the alpine! Oh well...

There are 2 ways of getting a back seat into a DeLorean as far as I 
can see. Either lengthen the wheelbase, which means making a custom 
longer center section for the frame, and doing lots of fiberglass 
work, and custom roof and rear quarter stainless panels. I could 
still move the battery location and electrics to free up a bit of 
room back there, which would minimise the amount by which the 
wheelbase would need to be lengthened by.

Or, keep the wheelbase, get rid of trailing arm setup, and build a 
completely custom rear end for the DeLorean chassis, using twin A 
arms (double wishbones!). I know the leg room is going to be very 
tight back there, and maybe its too tight, but with the front seats 
pulled forward, there might be enough room. Anyway, its more for kids 
than adults...

I'm keeping an open mind on both options until I do more reading etc. 
Maybe the best way to do it would be a combination of the 2 ideas.

I don't know much about the Alpines, having never seen one, but would 
love to see the frame setup at the rear to see if any ideas from it 
could be used. Do you have any pics of the rear suspension?


PS, in Stainless Steel Illusion, there is an illustration from 1975 
of a 4 seater DeLorean. It is based on the lengthened wheelbase 
method, and actually doesn't look bad. I know a longer wheelbase 
isn't going to help with cornering ability, but this car will be just 
used for cruising, not racing.

--- In dmcnews@xxxxxxxxxxxxxxx, Martin Gutkowski - DMC Ltd 
<martin@...> wrote:
> > On a side note, did you (or anyone else on the list) ever consider
> > redesigning the rear suspension completely, and eliminating the
> > trailing arm setup altogether? I'm planning on making a 4 seater
> > DeLorean next year (2 + 2 setup), with a small back seat suitable 
> > children or adults who don't mind being a bit squashed. Similar 
> > to the Porsche 911 back seat or Renault Alpine...
> >
> Woah - hold on there for a moment.... The back end of an Alpine GTA 
> very (very) different from the DeLorean. Let's start with the fact 
> it doesn't have a backbone chassis, it's a steel/fibreglass 
> (yes, that's correct, they can't split their frames from their 
> underbodies without cutting fibreglass), and move onto the fact 
that the 
> car is longer to accomodate the rear seats (more of your legs go 
> the dash if you get my meaning). I don't think there's enough room 
> the rear of a D for a seat of any sort, even without the trailing 
> Just look how close the rear wheels are to the back of the seats. A 
> might have the same engine and transmission but it's a totally 
> animal at the rear. You should see the gearshift linkage - it's 
> comically simple compared to the DeLorean. The hybrid 
> arm setup of the DeLorean is a Lotus design from the Elan/Esprit 
> does some clever rear wheel steering when under body-roll (a 
> that I still think is the reason for the single shear traling arm 
> setup). It also provides a lightweight but extremely strong 
tranfter of 
> thrust and drag (okay, TABs notwithstanding!). It's not there to 
get in 
> the way of back seats, it serves a very definite purpose. Without 
> redesigning the whole chassis, I think you'd be well advised to 
> them alone.
> >
> > I'm just starting to research the Alpine at the moment, but it
> > appears to have upper and lower A arms (and rear roll bar) 
instead of
> > the upper and lower links and trailing arm setup of the DeLorean.
> >
> We had a scrap Renault Alpine GTA V6 Turbo for a while, and sent it 
> its way after pulling the engine and gearbox. It's still being 
> out and the rear end was in good shape apart from being shockingly 
> (when you're used to DeLoreans that are 10 years older!). The 
> is referred to as double wishbone
> Best Wishes
> Martin

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