can public buy avgas?
26-02-2006, 07:48 PM
#1
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can public buy avgas?
i hear it's 100 ron or more and its about £1.10 a litre
whitch is cheaper than optimax on the motorway services
im thinking of geting my tank filled up and some jerry cans with avgas if i can actualy buy it
and then go to get the omex 600 mapped for avgas with water injection and then i can swap the maps over on my laptop in a matter of minuites
whitch is cheaper than optimax on the motorway services
im thinking of geting my tank filled up and some jerry cans with avgas if i can actualy buy it
and then go to get the omex 600 mapped for avgas with water injection and then i can swap the maps over on my laptop in a matter of minuites
26-02-2006, 08:07 PM
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tried it in my old peugeot 205 (mate has a helicopter runs on it) made the 205 feel more responsive and pull harder to about 4500 rpm but it didnt want to rev much higher than that and it used to rev to 8000, learnt my lesson. works ok in the chopper though.
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26-02-2006, 09:45 PM
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i was thinking about using it for santa pod and track days at donnington park
i thought it would be ok for an engine that has been mapped to use it
so whats the difference between race fuel and avgas at the same octain then?
i thought it would be ok for an engine that has been mapped to use it
so whats the difference between race fuel and avgas at the same octain then?
26-02-2006, 09:51 PM
#10
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lots...
avgas is design for aircraft, as you migh guess!
Aircraft engines are very low output for the size... say 150bhp from 5 litre. Its much more important the engine keeps going, rather than performs well! So they are lazy low revving engines.
In terms of the fuel, it has very high lead content (again helps with valve lubrication and relaibility). This gives it a very high octane rating. But... and heres the big difference, it burns slowly. Hence it not likily low revs.
Basically for a high performace engine, you want a high octane rating, which reduces the fuels desire to detonate, while retaining a decent flame propergation speed (so it will burn quickly enough at high engine speeds).
Alex
avgas is design for aircraft, as you migh guess!
Aircraft engines are very low output for the size... say 150bhp from 5 litre. Its much more important the engine keeps going, rather than performs well! So they are lazy low revving engines.
In terms of the fuel, it has very high lead content (again helps with valve lubrication and relaibility). This gives it a very high octane rating. But... and heres the big difference, it burns slowly. Hence it not likily low revs.
Basically for a high performace engine, you want a high octane rating, which reduces the fuels desire to detonate, while retaining a decent flame propergation speed (so it will burn quickly enough at high engine speeds).
Alex
26-02-2006, 10:09 PM
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cool ik keep on watching volcano on itv2 and forget about buying fuel for airoplaines
and make the asumption that avgas is just 5 star petrol
27-02-2006, 05:14 PM
#13
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Originally Posted by J871yhk
Aircraft engines are very low output for the size... say 150bhp from 5 litre. Its much more important the engine keeps going, rather than performs well! So they are lazy low revving engines.
Performance orientated aircraft use avtur. No good for RS's unfortunately, but if you have a diseasel daily runner avtur is excellent. 50-50 mix of the two. Doubles the fuel consumption on top of the normal diseasel output (only 50% needed to fill tank) and does not have any long term damage.
Cheap as chips.
27-02-2006, 05:34 PM
#14
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Originally Posted by rs shawn
[
Performance orientated aircraft use avtur.
Performance orientated aircraft use avtur.
Aircraft piston engines are designed for torque hence they don't need to rev fast. They may have low bhp figure, but you'll probably find they have high torque outputs for the size
28-02-2006, 01:06 AM
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Originally Posted by rs shawn
Originally Posted by J871yhk
Aircraft engines are very low output for the size... say 150bhp from 5 litre. Its much more important the engine keeps going, rather than performs well! So they are lazy low revving engines.
Performance orientated aircraft use avtur. No good for RS's unfortunately, but if you have a diseasel daily runner avtur is excellent. 50-50 mix of the two. Doubles the fuel consumption on top of the normal diseasel output (only 50% needed to fill tank) and does not have any long term damage.
Cheap as chips.
Any ideas where I could get some of that from mate? I'd like to have a butchers for .. err. My Jet-engined.... something.
Which I quite clearly have.
28-02-2006, 09:18 AM
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if u go to small air fields you can get it. I ran it in my honda for a top speed day once (also put a bottle of octane booster to every jerry can ) and the fooken thing just wouldnt rev properly. 
) and the fooken thing just wouldnt rev properly.
28-02-2006, 04:57 PM
#17
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Originally Posted by Fast Guy
Originally Posted by rs shawn
Performance orientated aircraft use avtur.
As for availability Steve200+ : you need to find yourself a friendly aircraft technician local to you who *could* source some avtur now & again without raising too much suspicion from other work people.
28-02-2006, 05:08 PM
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You can go to a small airport and buy it quite easily, it has a bigger lead content compared to normal pump fuel though, so I wouldn't recommend it for a car.
As for "it's not good for high RPM", I disagree. It's very popular amongst motocrosser's ( 2 stroke ) which rev far higher than normal or even race going car's. Race fuel also burn's slower too!
As for "it's not good for high RPM", I disagree. It's very popular amongst motocrosser's ( 2 stroke ) which rev far higher than normal or even race going car's. Race fuel also burn's slower too!
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