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Oct 21, 2010 19:37:38 GMT
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Right, following on from discussions in another thread: How is the capacity of a rotary engine calculated? You often see two capacities quoted, one being double the other, but what volume is actually being measured? I know from dealings with DVLA that the larger one is how they tax it
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Daft question amnestyBenzBoy
@benzboy
Club Retro Rides Member 7
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Oct 21, 2010 19:49:22 GMT
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Right, following on from discussions in another thread: How is the capacity of a rotary engine calculated? You often see two capacities quoted, one being double the other, but what volume is actually being measured? Good question. I've always wondered this too, so I did a bit of Googlage. This link gives a great explanation.
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Oct 21, 2010 21:36:41 GMT
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That's a cracking explanation, good find
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1989 Peugeot 205. You know, the one that was parked in a ditch on the campsite at RRG'17... the glass is always full. but the ratio of air to water may vary.
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Oct 21, 2010 23:29:35 GMT
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Ok.. what did they use to make the first ever lathe I mean you'd need nice round turned parts which you'd make using a..
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75 Range Rover 2 door 82 Range Rover 4 door 84 Range Rover 4 door 78 Datsun 120Y 2 door 78 Datsun 620 Pickup 81 Datsun Urvan E23 86 Datsun Vanette van 98 Electric Citroen Berlingo 00 Electric Peugeot Partner 02 Electric Citroen Berlingo 04 Berlingo Multispace petrol 07 Land Rover 130 15 Nissan E-NV200 15 Fiat Ducato
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Oct 21, 2010 23:42:47 GMT
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I'm guessing the lathe evolved from steam engined belt driven drills, someone prob thought about putting the job in a pillar drill chuck to file or cut it by hand rather than using a bench vice because it was quicker, add a tool post and lay the whole thing on it's side and haypresto! You have a lathe.
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Remember the days when sex was safe and motorsport was dangerous. Vintage bling always attracts pussy.
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Oct 21, 2010 23:58:13 GMT
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The earliest lates were for turning wood, and just consisted of two spikes (dead centres), a bow spring, a treadle and a rope. I'd imagine that the metal late was developed from that basic idea - but how they created the round bits I don't know.
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You can make anything be hand, just takes time and skill, we've become so used to billet stuff that people can't be bothered to do it be hand!!
Ask any proper old school bench fitter, when I did my training we had to cut and file to within +/- 3 thou of an inch and +/-0 over the thickness of the job, making stuff like centre scribes and engeineers squares be hand and they had to be perfect of it was a fail. What would be a few hours job on a milling mc or lathe would take a fewe days but it's possible.
Use a compass to scribe a circle, cut to line! If you can see the line, you can cut and file too it.
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Remember the days when sex was safe and motorsport was dangerous. Vintage bling always attracts pussy.
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would it be possible to power an eaton m45 supercharger off a starter motor, to work off a throttle switch, running off a spare battery that isn't charged off the altenator?
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Not really, a supercharger spins at about 10,000 - 20,000rpm so you'd have to gear it up at a really stupid ratio!!
Plus startermotors draw massive amps! So would drain a battery in seconds or burn out your wiring!
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Remember the days when sex was safe and motorsport was dangerous. Vintage bling always attracts pussy.
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would it be possible to power an eaton m45 supercharger off a starter motor, to work off a throttle switch, running off a spare battery that isn't charged off the altenator? Electric superchargers are perfectly possible, but you have to have a big heavy electric motor, plus batteries to run it, even if you only run it for short bursts the extra weight of all the bits makes it not worth it, Nitrous Oxide works better and is simpler with less drawbacks. You could run a supercharger off a pulley with a clutch in it so it could be disconnected, the big question is though, why would you want to? if you want to go slower you just push the accelerator pedal less.
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Volvo back as my main squeeze, more boost and some interior goodies on the way.
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I already have nitrous, but getting the bottle filled is a pain in the rse, so I was just thinking of an alternitive for some extra shove, ahh well, looks like it will be going were the aircon pump is.
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Seth
South East
MorrisOxford TriumphMirald HillmanMinx BorgwardIsabellaCombi
Posts: 15,536
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Just found some interesting stuff on old lathes here. www.historicgames.com/lathes/bowlathes.htmlYou can turn something between centres to a very high degree of concentricity - and then make a closer tolerance machine from those parts. Looks like metal lathes were simply heavy duty versions of wood lathes. Much of the (small) metal turning I do is done "by hand" with a graver rather than using a cross-slide.
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Follow your dreams or you might as well be a vegetable.
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Oct 22, 2010 23:40:41 GMT
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I've a question... How do "women" work? I've missed out on loads of cool retros because "she" said no! And was wondering if you can re program the ecu's to cure this fault?? If they have ecu's?? Thanks in advance ;D
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Remember the days when sex was safe and motorsport was dangerous. Vintage bling always attracts pussy.
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Dom
Part of things
Limey
Posts: 617
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Nov 11, 2010 11:53:57 GMT
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Want to get a footpump for my car. (no cigarette lighter)
So my question is: Is it physically possible to inflate car tyres with a footpump? I.e. pressing down to inflate 2+ bars.
Taaa!
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speedy88
Club Retro Rides Member
"Nice Cortina mate"
Posts: 2,296
Club RR Member Number: 118
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Daft question amnestyspeedy88
@speedy88
Club Retro Rides Member 118
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Nov 11, 2010 12:27:27 GMT
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Yes I've done it but it took freaking ages.
Why not get a battery jumper pack with tyre compressor pump built in? Mine only cost £40 from ECP.
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Nov 11, 2010 12:31:14 GMT
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Yes, possible. But as said, takes a bit longer... And pedestrians might give you some odd looks... ;D
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Dom
Part of things
Limey
Posts: 617
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Nov 11, 2010 12:37:07 GMT
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<<<< It's OK, I look odd anyway! Yes I've done it but it took freaking ages. Why not get a battery jumper pack with tyre compressor pump built in? Mine only cost £40 from ECP. Interesting! I'll go hunting! Cheers guys.
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Nov 11, 2010 12:58:54 GMT
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Superchargers (the M45 specifically) requires up to 16kW to spin and create a pressure differential, look at the size of the motor needed to suppy 16kw, monster! That and you only have 12v to supply it, so that makes a demand of 1400amps ish, and to supply 1400amps you need cable around 25mm in diameter!
And hand making things can bring a pleasure known only to those who also have the drive to do so ;-)
J
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bigrod
Posted a lot
Posts: 1,654
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Nov 11, 2010 16:42:11 GMT
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What's a 'short' engine?
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If I have to explain, you won't understand. Maximum signature image height = 80 pixels
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Nov 11, 2010 17:04:32 GMT
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Usually referencing recon units - it means the bottom end, crank, rods, pistons and block, so that you can swap all of your other bits onto it - including your head and sump etc.
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'83 GTM Coupe. 4A-GE Powered '00 GTM Libra Auto. Ick. '71 Detomaso Pantera. Current Resto '89 GMC Safari Tow/Kip bus '05 SAAB 9-3 Daily '71 Siva Moonbug. Not even contemplating resto yet.
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