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-   General discussion (http://www.haynes.co.uk/forums/forumdisplay.php?f=10)
-   -   Building for efficiency instead of performance (http://www.haynes.co.uk/forums/showthread.php?t=7164)

brainbug007 23rd September 2011 10:47 AM
Personally I like the sound of using hydrogen. Apparently you can run a petrol engine on it with very little conversions. The tricky bit is getting a tank or some sort of electrolisis process running in a cell that creates enough hydrogen to run the engine from salt water.

brainbug007 23rd September 2011 10:52 AM
Have a read of this, looks cool:) http://www.spiritofmaat.com/archive/...ar/h20car2.htm

flyerncle 23rd September 2011 11:02 AM
Build your own anaerobic digester and run it from the gas it produces,methane as per Top Gear.
It's very simple to do .

Greenbeast 23rd September 2011 11:07 AM
Quote:
Originally Posted by AshG (Post 65441)
personally i think your wasting your time. the roadster has the aerodynamics of a brick. the best way to gain efficiency is to move the car through the air more efficiently.

typically a 2.0 zetec will do between 35-40mpg in something like a focus. have you ever asked yourself why it still only does 35-40mpg in a 7 which is less than half the weight of a focus?
However i just thought perhaps this is because the drivers are tearing round in them rather than driving conservatively? :D

flyerncle 23rd September 2011 12:14 PM
Wait until you have built and conserative goes out the window.;)

Greenbeast 23rd September 2011 12:30 PM
ha ha, yeah i bet

davedew 23rd September 2011 01:20 PM
Quote:
Originally Posted by voodoo (Post 65440)
addition we are working with a local company that has developed a biodegradable alternative to GRP. Strengthwise it is better, costwise it can't get close.

Matt
Does this mean that if you leave it out in the rain, the body will go soggy and fall off!!

robo 23rd September 2011 04:06 PM
The council round here were playing with cng <compressed natural gas>. I dont know what came of it but i know other countries are bigger into it. Takes all night to compress the gas in a car to give you app 300 miles of driving. Ok for normal town stuff but would cause a rep a few problems. And of course no duty on that or filling stations. Hmmm

Thoughts

Bob

tex 23rd September 2011 04:26 PM
Quote:
Originally Posted by AshG (Post 65441)
personally i think your wasting your time. the roadster has the aerodynamics of a brick. the best way to gain efficiency is to move the car through the air more efficiently.

typically a 2.0 zetec will do between 35-40mpg in something like a focus. have you ever asked yourself why it still only does 35-40mpg in a 7 which is less than half the weight of a focus?
beat me to it - if your after an efficient car you wont get it with a 7 type shape - too many sticky out bits.

BUT there are alternatives like the fisher fury type car - basically its a 7 under the skin but slippier cos of body shape

ayjay 23rd September 2011 07:04 PM
I was thinking of a great big elastic band:D :D :D


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