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Top gear - Cadillac W16
DaveFJ - 23/7/03 at 02:29 PM

Saw top gear on sunday and they were reviewing the new cadillac mental machine.

It sported a 16 cylinder engine in a w formation (a bit lie 2 v8's side by side)
and put out 1000BHp ...

So anyway it's got me thinking...

Has anyone else come up with any bizzare engine combinations or alterations?

How about a couple of flat fours on top of each other ....

Maybe i need a little lie down..


ned - 23/7/03 at 03:01 PM

i suppose an X configuration would be someting different, if it's ever been done! either 1x v8 & 1x upside down v8 or 2x flat fours mated across the middle!

would have to be injection mind you, wouldn't want fuel dripping everywhere out of carbs!

Ned.


gjn200 - 23/7/03 at 03:22 PM

quote:
Originally posted by ned
i suppose an X configuration would be someting different, if it's ever been done! either 1x v8 & 1x upside down v8 or 2x flat fours mated across the middle!

would have to be injection mind you, wouldn't want fuel dripping everywhere out of carbs!



Ned.


Hmmm.... radial aircraft engines spring to mind.

[Edited on 23/7/03 by gjn200]


David Jenkins - 23/7/03 at 03:31 PM

Or the engine fitted to the Deltic locomotives...

Several banks of 3 cylinders, mounted in a triangle. Each of the 3 cylinders has a pair of pistons in opposition (i.e. on the compression stroke the pistons move towards each other).

Although it was a diesel, it sounded like a turbine - weird!

Now one of those in petrol would be interesting...

David


DaveFJ - 23/7/03 at 04:17 PM

thinking some more on the subject...

some tank engines have horizontally opposed pistons in a single cylinder... maybe 2 xflow engines, 1 upside down on top of the other....

I really need a lie down now....

Or better still, how about a few 2 stroke engines from performance bikes strung together - imagine the acceleration...

Help - the men in white coats have come for me.....


PeetBee - 24/7/03 at 12:03 PM

IIRC in the 60's BRM produced a H16 engine. But it wasn't very succesfull!


andyps - 24/7/03 at 02:05 PM

Some of these ideas sound similar to the VW W8, 12 and 16 engines they are now producing - the W12 is effectively two V6's joined together.

There is an interesting article in one of the kit car mags his month about a V8 2ltr engine made from 2 4 cyl bike engines - producing 300bhp. Sounds good but htey are £14 +VAT. Not quite locost.


ijohnston99 - 24/7/03 at 02:12 PM

Which mag is that in???

Cheers,
Ian


gjn200 - 24/7/03 at 03:34 PM

quote:
Originally posted by PeetBee
IIRC in the 60's BRM produced a H16 engine. But it wasn't very succesfull!


Too succesfull really, it produced to much power and broke things,then the regs were changed so it couldn't be used.


ned - 24/7/03 at 03:38 PM

sounds like the cyclone engine that i saw at stoneleigh, 2x yammy yzf 1000 engines, images here:

http://www.locostbuilders.co.uk/~ned/shows/stoneleigh/index.htm


James - 24/7/03 at 03:44 PM

quote:
Originally posted by ijohnston99
Which mag is that in???

Cheers,
Ian


Pretty sure it's Which Kit? I saw it in.

I've actually seen the real thing running at Stoneleigh.

Here's a couple of pictures:


http://www.locostbuilders.co.uk/~ned/shows/stoneleigh/index.htm


Strangely enough it sounds just like to YZF 1000s standing next to one another!


I'd be interested to know if there's much benefit in spending £15K on one of these and getting 300BHP as opposed to £8K on a 450BHP Hyabusa engine?

Cheers,

James


DaveFJ - 24/7/03 at 03:56 PM

I dunno...

quote:

There is an interesting article in one of the kit car mags his month about a V8 2ltr engine made from 2 4 cyl bike engines - producing 300bhp. Sounds good but htey are £14 +VAT. Not quite locost.



14 quid seems very reasonable to me guvnor, in fact i'll take two !


andyps - 25/7/03 at 11:23 AM

Forgot the K - the price is £14000 + VAT!!

I am sure it is Which Kit - the one who are currently building an MK Indy.

The articel says it sounds like two bike engines rather than a V8 (shame that) but that it is very driveable, where a 450bhp (or even 300bhp) tuned bike engine may not be.


kingr - 25/7/03 at 11:53 AM

BTW, that cadi is a V16, not a W16. You're thinking of the VW Phaeton and the Bentley GT, which both have W16 engines. IIRC there is a Passat with a W12 engine.

Kingr

BTW, I didn't realise just how enormous the cadi was until I read that it's 2 feet longer than a 7 series BMW!!!


Simon - 25/7/03 at 12:01 PM

See

http://www.brooklands.org.uk/reunion/nr10.htm

for Napier Railton W12 - 24 litre

David,

I saw a scale model of a Deltic engine at the Model Engineering Exhibition about 10 years ago - they're a great idea, but I think a little too much space is required.

And they probably weigh about 3 tons each

Nice schematic for those that don't know of them:

http://www.lexcie.zetnet.co.uk/delticengine.htm



ATB

Simon

[Edited on 25/7/03 by Simon]

[Edited on 25/7/03 by Simon]


David Jenkins - 25/7/03 at 12:33 PM

Good links Simon!

I read the article about making the scale Deltic engine - 3 banks of 3 cylinders, 18 pistons, 52 rings!

Mind you, there was another scale engine made by TD Walkinshaw Engineering (Tubal Cain, if you read Model Engineer). It was a one-sixth scale RR Merlin engine - which actually ran...

cheers,

DJ


DaveFJ - 25/7/03 at 12:50 PM

I stand corrected. it was the VW with the 'W'

But the caddy still had 1000bhp!

hmmm 1000bhp in a locost - that would be about 1500bhp per ton... hmmm

I need another lie down


Simon - 25/7/03 at 01:25 PM

David,

Used to read ME about 7 years ago(?). Not since:-( Though may be buying a lathe later this year:-) so may start again.

There's a chap (who's names escaped me) from a local Engineering Society who's built (from scratch!!!!) a flat 4, replica 1/2(IIRC) scale AJS7R motor - complete with remote twistgrip (scaled!!), a 3 cylinder radial (barrels remain stationary) and a 9 cylinder rotary (whole engine rotates - not wankel) - this, as you may imagine, is quite a site to see. If I can find some pics I'll put them up!!

Talking of large engines - if anyone's interested (I am, but no use for it yet!!) there's a 455cu in (7.5l) Buick engine and auto box on ebay for £250 at the moment.

ATB

Simon


ned - 25/7/03 at 01:31 PM

sounds like an upgrade for timf?

he's the resident/local neighbour scarer on here!

Ned.


timf - 25/7/03 at 01:40 PM

quote:
Originally posted by ned
sounds like an upgrade for timf?

he's the resident/local neighbour scarer on here!

Ned.


I've only scared one neighbour when i started the 350 in the garage on its frame with manifolds only one sunday
the other one came to see what it was and was stood there egging me on to give it some more stick but was suprized when on the over run the flames that come out of the manifolds.

[Edited on 25/7/03 by timf]


David Jenkins - 25/7/03 at 01:44 PM

Reminds me of a video my mate showed me - a RR Gryphon engine on a stand, with a 56-gall water tank for cooling.

His video camera was on a tripod - nice steady shot until the engine started, then the whole thing started vibrating, about 30 yards from the engine!

The owner stopped the engine when the water tank started to feel warm, measured by putting his hand on it.

The same bloke owns a tank or two, plus assorted engines including a hand-started gas turbine used to start jet fighters.

DJ


timf - 25/7/03 at 02:12 PM

heres an engine that might be fun in a locost

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=26437&item=2424905507

bargin compared to the hyabussa engines


ijohnston99 - 25/7/03 at 02:30 PM

Wouldn't like to try and stop in a hurry!!!

Vroooooooom....splat!

http://www.darwinawards.com/darwin/darwin1995-04.html


Simon - 25/7/03 at 03:11 PM

As the site says, it's a myth.

Have a look at this - much longer winded, but just as amusing.

http://www.bored.com/rocketcar/index.htm

ATB

Simon


steve m - 27/7/03 at 11:03 PM

and people have this type of stuff in their garage???

i want a jet engine next


bob - 28/7/03 at 07:28 AM

Lads

Get yourself down to the Brooklands Museum and have a look at the Napier Railton,as mentioned earler 24 litres in a W12 formation its a fantastic piece of iron and ally.

http://www.brooklands.org.uk/


ned - 28/7/03 at 09:38 AM

i thoght it was wierd as it has three conrods connecting to one crank journal. i guess three cylinders on the same row have to fire at the same time?

biarre, or is this how all w12's work?

Ned.


Alan B - 2/8/03 at 01:57 AM

Hmmmmm....interesting thread, but....I'm sure the Cadillac motor in question is actually a V16.....


bob - 2/8/03 at 09:27 PM

the thread diversed a bit as we do


this V16 caddy eng that becomes V8 or V4 is not new technology,they (cadilac)have been messing around with this thing for a couple of decades that i know of.And i think it was on the drawing board in the 50's

[Edited on 2/8/03 by bob]


kingr - 3/8/03 at 10:26 PM

The frictional losses of running a V16 as a V4 must be horrific as well.

Kingr


Browser - 10/8/03 at 03:50 AM

Two more Napier engines. First the Sabre, used in the Hawker Typhoon/Tempest aircraft, was an H24 (two banks of 12 cylinders each mounted one on top of the other). Second, the Nomad, a (I think) flat 12 with a compounded 3 stage turbocharger, used for powering aircraft. Napier really did come up with some mad internal combustion devices.
Does anyone remember that Aussie motor froma few years back which used a scotch yoke-type crank? Was supposedly better that conventional crankshaft/conrod arrangements as it allowed the engine to be more compact. Anyone know what happened to it?