Silvia Club of NSW

Why drive when you can drift?
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PostPosted: Tue Jan 16, 2007 12:39 am 
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Takumi
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Location: building!
Car: Silvia
in this country they're all too expensive :P

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PostPosted: Tue Jan 16, 2007 12:55 am 
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Car: Fa(s)t red boat
Define 'expensive'
'Cause lets face it, anything that can throw 60tons of tank across the countryside could do some serious evil in something which weighs around 2 tons and a bit of buggerising with the gear ratios... and there are some people who seem to have no compunctions at throwing 100's of thousands at a car which mostly just looks faster than it actually goes :P

Think the way to do it would actually be to go gas-turbine/electric hybrid really, you can buy small-ish gas turbine generators for reasonable amounts of money, (batteries are for sissys, dont sound nearly as cool as a turbine hitting peak rpm) and find a way of cramming some industrial strength brushless electric motor(s) in there... mmmmonster torque!

Now all I need to do is win lotto to fund this stupidity...


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PostPosted: Tue Jan 16, 2007 12:44 pm 
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Takumi
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yeah that last part is the usual problem, otherwise I'd have already done exactly what you have suggested (but with a bank of super capacitors as well for that extra punch :))

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PostPosted: Tue Jan 16, 2007 1:09 pm 
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Quad T66
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yeah i seen a few of these turbo jets on youtube, usually they have massive turbines.

how do these things compare to pulse jets ? those things look like fun, and still relatively simple


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PostPosted: Tue Jan 16, 2007 8:37 pm 
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T03 Hybrid

Joined: Tue Jul 23, 2002 5:20 pm
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Location: sydney
Car: CA18DET Datsun 1200
I saw this and immediately thought of dumhed....

Image
http://cgi.ebay.com.au/GAS-TURBINE-ENGINE-GARRETT-BRAND-NEW-IN-BOX-AIRCRAFT_W0QQitemZ180074431506QQihZ008QQcategoryZ105818QQtcZphotoQQrdZ1QQcmdZViewItem

pass the dish around so he can buy it?


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PostPosted: Tue Jan 16, 2007 9:16 pm 
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SilviaNSW Supporter
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Car: Fa(s)t red boat
10grand!
Heck, people will spend many times that for a 10-11 grand redline, this bitch comes with a 63,000grand redline :lol:
115kg, 3 x 3ft or so... little mofo will fit roughly in an SR20 shaped hole...

The nice thing about capacitors is that when youre not using them, you could wire them in hot to the cars chassis and use them as a 'once off' kind of security system.
You touch it once
You cease to live :p


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PostPosted: Wed Jan 17, 2007 7:33 pm 
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T51
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There was a Four Corners a few months ago that talked about electric cars in the US. They went over both factory electric cars that the manufacturers didn't want to admit existed, and modified cars with some fairly serious electric motors in them. For example, a car (nfi what kind, but a looked like something late 70's) doing 12 second quarters. 300whp and I think 770ft/lbs of torque, no gearbox (direct drive off the motor output shaft), and a surprisingly physically small electric motor and battery. I think the owner said he'd spent about $12K (USD of course) on the modifications. It was freaky to watch this thing absolutely nail some yank domestic shitter (Camaro or something) on the drag strip in total silence (well, the electric car was silent).

I mentioned it to a bloke at work who reckoned there was someone in the Blue Mountains that produces similar electric motors. If you're interested I'll chase it up.

Silly electric motor + gas turbine generator => highly unusual and quick car?

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PostPosted: Wed Jan 17, 2007 9:41 pm 
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I'm suprised that it was direct drive, even with the super-dooper electric racing motors used in RC cars (not the stock-shitters) we tend to gear them down a bit for torque.


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PostPosted: Wed Jan 17, 2007 9:57 pm 
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T51
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I got the impression that it wasn't really a single motor, it was actually a number of motors (probably stepper motors, aka brushless DC motors) synchronised to operate together and linked to the one shaft, i.e. the torque from all the motors added. The big plus to stepper motors is you can get very precise control over their speed, so they'd be ideal for this kind of application.

Of course they didn't go into motor construction much on TV (more focussed on side issues like mileage :roll: ) so I may be completely wrong. The motor itself did look like it was made up of number of similar sections with the shaft running down the centre rather than being a single unit.

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PostPosted: Thu Jan 18, 2007 12:49 am 
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Takumi
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yeah all the latest motors are brushless, with very efficient control system (the controller is what costs most of the money)

I've seen a few electric cars, and would love to build one but at the moment it's too expensive to do it the way I'd like.

Fester: does the guy in the blue mountains build electric motor setups for boats? I've seen them advertised before.

Check this out: http://www.jouleinjected.com/

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PostPosted: Thu Jan 18, 2007 1:21 am 
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T03 Hybrid

Joined: Tue Jul 23, 2002 5:20 pm
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Car: CA18DET Datsun 1200
It was a dateline episode..they were 2 door sedan Datsun 1200s (my forte), and John Wayland is a kick ass kinda electric guru guy.

They are one engine. unlimited torque, some kick ass big current speed controllers and relays.

I have it on video, I need to save it to utube for others.


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PostPosted: Thu Jan 18, 2007 8:31 pm 
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T51
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Was it Dateline Brian? I could have sworn it was Four Corners, but advancing age does odd things to the memory :roll: I thought it was a damn good watch anyway.

Yeah, that'd be the guy Andrew, electric boat motors was what Al mentioned.

I like the Joule car. Jeez he managed to pack some batteries into it!

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PostPosted: Thu Jan 18, 2007 9:28 pm 
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Yeah, be definately interested in seeing it if you manage to upload it to youtube.


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