Twin-boom cars
#1
Posted 21 January 2010 - 18:12
which got me thinking, how many, and why, did some engineers/designers see the twin boom layout of any use? I am aware of record breakers and Indianapolis cars, but can't think of any true circuit cars, unless of course.....................
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#2
Posted 21 January 2010 - 18:37
Tarf record breakers
Smokey Yunick's Indianapolis sidecar
and the 1955 Le Mans Nardi
Are there any more?
#3
Posted 21 January 2010 - 19:03
Adams Escort Can-Am and Side Engined Cars
but the photo links no longer seem to work, so have a look at:
http://www.racingspo...3-07-04-010.jpg
http://www.racingspo...-06-05-010b.jpg
There's another thread on twin-boom cars:
Twin torpedo cars
The Adams thread also features the Ardex S80 which failed to qualify at Le Mans in 1981.
#4
Posted 21 January 2010 - 19:38
Marticelli
#5
Posted 21 January 2010 - 20:45
#6
Posted 21 January 2010 - 20:56
Piero Taruffi's racer certainly used to reside in the York Motor Museum in Western Australia... Not sure if its still there... If you look at <http://forums.autosp...pic=20124&st=0> post #29 you will see a pic of the cockpit... Hope ths helps!
Marticelli
I'm pretty sure the postcard in the first post is Taruffi's car . It looks a bit like a "colorized" black and white photo .
#7
Posted 21 January 2010 - 21:12
There's a few, but WHY!!!!??? What could the possible advantages be?
You could incorporate one hell of a ground effect tunnel between the booms?
#8
Posted 21 January 2010 - 21:55
There's a few, but WHY!!!!??? What could the possible advantages be?
Reduced frontal area coupled with a fully faired wheels and axles all in the quest to reduce drag.
Perhaps not surprising since there were aircraft built in similar fashion at the time such as P38 Lightning and the De Havilland Vampire. Designers over the years have taken styling cues from aircraft.
#9
Posted 21 January 2010 - 22:50
Edited by Roger Clark, 21 January 2010 - 22:51.
#10
Posted 22 January 2010 - 08:28
[img]http://62.149.36.46/...bin/nardi61.JPG[/im]
This is the car that Mike Hawthorn maintains his Jaguar 'blew off the road' at Le Mans in 1955.
Edited by Barry Boor, 22 January 2010 - 08:29.
#11
Posted 22 January 2010 - 22:50
This one has been modelled by Fernando Pinto's Bizarre company:
This is the car that Mike Hawthorn maintains his Jaguar 'blew off the road' at Le Mans in 1955.
Fixed it.
I'm pretty sure I remember seeing in a book on dry lakes hot rods a rough looking twin boom drop tank racer. One side was the driver, the other was the motor.
#12
Posted 22 January 2010 - 23:47
I'm pretty sure I remember seeing in a book on dry lakes hot rods a rough looking twin boom drop tank racer. One side was the driver, the other was the motor.
Is this the one you're refering to ?
http://images.google...c78a33be8d73ab3
http://images.google...d8457efbb195a31
http://images.google...c26700e234f01bf
http://images.google...3263cddd75d5409
Edited by REDARMYSOJA, 22 January 2010 - 23:51.
#14
Posted 19 February 2010 - 10:51
#15
Posted 19 February 2010 - 11:14
You really wouldn't want to hit anything in that would you?
Well half of you wouldn't....................
#16
Posted 19 February 2010 - 17:14
EDIT: He also raced a Gilera powered car in 1954
Edited by hansfohr, 19 February 2010 - 17:45.
#17
Posted 19 February 2010 - 17:33
The cutaway is LHD so must be the Gilera-powered car.
#18
Posted 19 February 2010 - 17:50
Thanks, I edited my post. (need new glasses LOL)The cutaway is LHD so must be the Gilera-powered car.
Edited by hansfohr, 19 February 2010 - 17:51.
#19
Posted 20 February 2010 - 17:40
There's a few, but WHY!!!!??? What could the possible advantages be?
There were reasons behind the "Nardi" car. It was designed by Carlo Mollino,
with the driver and driveline spread to the sides and connected by a shaped
wing. The center shape was calculated--I know--to produce 30kg of downforce.
The front of the wing was a surface cooling element. There was a rotating air
brake. It all unraveled, of course, but the small project is fascinating. The
recent book on Nardi, by Dino Brunori and Andrea Curami, describes the
Damonte-Mollino-Nardi "DaMolNar" in great detail, and explains the series of
naive mistakes that doomed the bisiluro. It is interesting to imagine a 1956
DaMolNar, but instead the project devolved into bickering and lawsuits. The
car was squirrely at LeMans, but it was a handful at all speeds, after a main
frame tube was cut to fit the passenger seat that Mollino forgot. In the race it
ran off the road at the Mulsanne corner at the end of Les Hunaudieres
and got stuck in the mud.
--Carter
Enrico Nardi: a Fast Life by Dino Brunari and Andrea Curami. Foundazione
Negri 2009. disorganized, fascinating, highly recommended.
Edited by Carter Hendricks, 21 February 2010 - 06:36.
#21
Posted 20 February 2010 - 22:06
The car depicted in this cutaway drawing "Twin Tank" streamliner is powered by a modified flathead Ford V8. In modifed form these engines could run capacities as high as 296 cubic inches. A shade under 5 litres. A pure American car built for Bonneville.
I dont see any connection with Gilera.
#22
Posted 20 February 2010 - 22:24
Did I misinterprete my source or is it fully wrong? http://jalopnik.com/...g-double-bulletThe car depicted in this cutaway drawing "Twin Tank" streamliner is powered by a modified flathead Ford V8. In modifed form these engines could run capacities as high as 296 cubic inches. A shade under 5 litres. A pure American car built for Bonneville. I dont see any connection with Gilera.
Edited by hansfohr, 20 February 2010 - 22:27.
#23
Posted 20 February 2010 - 22:52
Did I misinterprete my source or is it fully wrong? http://jalopnik.com/...g-double-bullet
hansfohr,
I think you can be forgiven for the way you have read the article as it is apt to confuse. It text in the article does state "(unlike the cutaway in the gallery used for illustration)".
With that statement it is fair to say that's all it is. It is an illustration designed to give some insight to the nature of the construction of the twin boom style of car but no more than that.
#24
Posted 21 February 2010 - 06:35
The Nardi-Crosley 750 LM in the 1955 Le Mans 24H until it flew off at Les Hunaudieres. The twin torpedo finally ended up in the Leonarda da Vinci museum im Milan.
The Brunori book shows this same photo, but not cropped, and I thought that
it was from the same sequence as the crash photos on the same page.
The two photos show the bisiluro looping into the slow Mulsanne corner
at the end of the straight and then a second photo of the ~undamaged car
sitting in the mud. In the first photo the Kieft LDA 172 approaches to pass
on the inside. The car did loose control on the straight but the faults seem
structural [the cut frame] and the flying stories are overblown. But I edited
out the word "simply" in my earlier post.
The bisiluro was powered by a Giannini G2 DOHC engine, which is not
Crosley based. This is clear in all press photos of the car.
--Carter
Edited by Carter Hendricks, 21 February 2010 - 06:40.
#25
Posted 21 February 2010 - 10:45
Thanks for the correction, once more! I need to purchase the Enrico Nardi book to get the proper info.The bisiluro was powered by a Giannini G2 DOHC engine, which is not
Crosley based. This is clear in all press photos of the car.
--Carter
#26
Posted 21 February 2010 - 23:01
#27
Posted 22 February 2010 - 22:18
This is the Catamaran styled OSI Silver Fox made in 1967 in Turin Italy it was powered by an Alpine engine 1000cc? (Iam guessing it a Renault ) which is strange because most other cars of that time had a Italian made motors.
It sure looks like a boat ,the engine is mounted in the middle you can see the cover between the seats and was rear wheel drive.It seem to have a ground effects air tunnel. most unusual.
#28
Posted 22 February 2010 - 22:31
#29
Posted 22 February 2010 - 22:37
In the parallel thread Twin Torpedo Cars I asked the same question and was told that Taruffi headed up the organisation producing the OSI.Was the car named Silver Fox in honour of Piero Taruffi, perchance?
Twinny! Should these threads be merged?
Edited by D-Type, 22 February 2010 - 22:38.
#30
Posted 23 February 2010 - 02:46
#31
Posted 01 October 2014 - 08:33
Twin boom nostalgia in the making, F24+ class BY-Pod from Chipping Sodbury School at Castle Combe last weekend.
More inspiring 24v engineering here.
#32
Posted 01 October 2014 - 13:44
Headrest or airbrake?
#33
Posted 01 October 2014 - 14:15
#34
Posted 02 October 2014 - 10:22
Headrest or airbrake?
I am not sure, but I believe Tony has hit the nail on the head.
One reason for opting for the twin boom layout on this vehicle may have been to attempt to increase the track dramatically for better handling in the corners while keeping the front cross section low.
Apparently this was the second or third twin boom electric car built by Chipping Sodbury School.