new idea

Mr Quoter-vator Joined: 16 Feb 2004 Posts: 7405

http://rbowes1.11net.com/dbowes/index.htm

dump the camshafts

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

change the title, its not a new idea its been done then binned.

Mr Quoter-vator Joined: 16 Feb 2004 Posts: 7405

i didnt mean new as in revolutionary...just new to read....gawd

Retroholic Joined: 12 Feb 2004 Posts: 5685

lol chris i can't decide whether i like you more cos of your knowledge or cos you're an ass

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

cos I'm an arse

Retroholic Joined: 12 Feb 2004 Posts: 5685

Oh, ok lol

Level 1 User Joined: 09 Mar 2004 Posts: 25

Renault was working on that, along with the ADIVI (clutch+starter+alternator) concept and the camless was binned because of the need of stronger electromagnetic systems for that...

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

the new citroen whatever the hell it is has the starter/alt thing. Engine stops when the cars stopped.

Mr Quoter-vator Joined: 16 Feb 2004 Posts: 7405

oh yeah i read about that...surely thats just gunna wear out quickly...

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

well engines used to need overhauled at 20k miles!

Things have advanced and all these things are well tested. We do have a good 75 years of development on it.

What I like less is mercedes brake by wire and steer by wire setup. Drive by wire throttles are bad enough.

I much prefer an mechanical link.

Mr Quoter-vator Joined: 16 Feb 2004 Posts: 7405

yeah i dont like it either...

Site Subscriber Joined: 10 Jun 2004 Posts: 2317

So if you have an electrical fault you loose brakes and steering...great. WOuldnt the citoren use more fuel starting the engine all the time?

Forum Moderator Joined: 16 Feb 2004 Posts: 1356

Nothin wrong with fly by wire. It is BAE systems prefered method of controlling any air borne craft. Its like everything... depends who does it

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

fly by wire has been done on jet engiens for ages. They are totally different to car applications. On a plane response is not an issue, on a car its a big issue.

As for the citroen starting fuel thing, they have it so its very fuel efficient.

Glasgow council have a radio campaign at the mo, if your cars running for no good rason you get a 20 quid fine.

Site Subscriber Joined: 24 Apr 2004 Posts: 318

Quote:

Glasgow council have a radio campaign at the mo, if your cars running for no good rason you get a 20 quid fine

hmmm - I'd better watch out for that - if they mean while sitting in traffic jams they could pay off the national debt in a couple of days Laughing

Forum Moderator Joined: 02 Mar 2004 Posts: 19978

when you coming to see me mate? I wanna see the new toy!

Forum Moderator Joined: 18 Feb 2004 Posts: 7432

Chris H wrote:

fly by wire has been done on jet engiens for ages. They are totally different to car applications. On a plane response is not an issue, on a car its a big issue.

Actually, most modern fighter jets are inherently unstable and could not fly without fly by wire, the flight computer constantly makes tiny control adjustments to keep the thing flying in a straight line. Response is most certainly an issue!!!

Site Subscriber Joined: 10 Jun 2004 Posts: 2317

I can see it now...fly by wire cars controlled by a computer Laughing

Mr Quoter-vator Joined: 16 Feb 2004 Posts: 7405

neal...i saw a program on some test plane...with the wings facing forwards instead of swept back....apparently that would never have been possible to fly without computer aid....just far to unstable for any man to have fast enough reactions to control...

Forum Moderator Joined: 18 Feb 2004 Posts: 7432

That would have been either the NASA X-29 or the soviet Sukhoi S-37 Berkut. Forward swept wings have all the characteristics of 'normal' backwards swept wings, plus several advantages such as better low speed handling, lower stall speed and less trailing vortices etc. They're not necessarily unstable, in fact i have built models with forward swept wings, that were quite docile. For military aircraft though, natural instability is desirable, because from that you get manoeuverability. Its all down to the specifics of the overall design.

The only problem is getting them to stay on the aircraft and not tear off (structural divergence) Smile

As any slight deflection of the wing means that the airflow is trying to twist it round even more. These aircraft have only become possible due to extremely advanced composite materials and FEA design.

The X-29

The S-37

but anyway...er....renaults.... Very Happy

FCS Event Manager Joined: 04 Jan 2005 Posts: 3680

huwwatkins wrote:

I can see it now...fly by wire cars controlled by a computer Laughing

as long as those computers dont run 'windows' we should be fine

Insurance claim: my car swerved into the fast lane of the M25 causing me to hit the the very expensive porsche cos some hacker kiddie hacked my windows OS and used my car like a Â£25 maplins remote control car special.