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Fuel - What's your favourite??
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Ian Harrison



Joined: 23 Nov 2006
Posts: 1671
Location: United Kingdom (Great Britain), Manchester

PostPosted: Wed May 16, 2012 7:42 pm    Post subject: Reply with quote

Hi Sam

Yes, I don't know what the boys are doing, but 747 dosen't appear on the "supercheap" website any more, so perhaps old stock . . . . or perhaps Scotty just wanted me to do the work. Confused

Anyway, I found a company in Adelaide with 16 bottles on the shelf, so Scotty dusted off his credit card and they are on the way.

Oh and the Eski has arrived and signed for. Good service from DHL once more!!

I'm getting excited now, only just over a week till I see you and the boys again!! Greeeeeeeeaaaaaaaaaaaaaaaat Cool In exactly a week from now I'll be in the land of upside down Cool

Shorts or Jeans. Hawaian shirt or ski-jacket! Chinas or Wellys?????? Sunglasses or scarf. Will that "jetski carb-testing" wetsuit come in handy Shocked

So . . . . . . . . Avgas and 747 it is Cool

Best Regards

Ian Very Happy
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Ian Harrison
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Ian Harrison



Joined: 23 Nov 2006
Posts: 1671
Location: United Kingdom (Great Britain), Manchester

PostPosted: Wed May 16, 2012 7:49 pm    Post subject: Reply with quote

Anthony Williams wrote:
Wow Ian that looks really nice - now what motor is that!!?? The tandem engine is such a great package for a kart!


Anthony, I could tell you, but I'd have to shoot you Wink

It's a SAFE. Lovingly crafted in the land of Ozz Cool

Dot, pass me my 45!!

Best Regards

Ian Very Happy
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Ian Harrison
Viper Racing UK
www.viper-racinguk.co.uk
sales@viper-racinguk.co.uk
+44 7984 225 564
+44 161 343 2009
Championship winning Superkart race team 1997-2012
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Sam Zavaglia



Joined: 23 Nov 2004
Posts: 1189
Location: Australia, Sydney,

PostPosted: Wed May 16, 2012 7:50 pm    Post subject: Reply with quote

I don't care how cold it gets in England, if you think Hawaian shirts and shorts are the order for Phillip Island in late May....your dreaming.
As the late great Barry Sheene once said while commentating from pit lane....."Welcome to Phillip Island, gateway to hyperthermia"

Tell me if this video makes Phillip Island look like a warm place in Winter.
http://www.youtube.com/watch?v=kpc_IN7ssIE
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Ian Harrison



Joined: 23 Nov 2006
Posts: 1671
Location: United Kingdom (Great Britain), Manchester

PostPosted: Thu May 17, 2012 12:39 am    Post subject: Reply with quote

Nice driving from the colourful Italian there.

So it's wellys, wetsuit, thermals, ski jacket, woolly hat and gloves then!!

Did you see Sam nearly loose it at the end with a rapid rear tyre deflation. That could have been a really nasty accident. I have long thought that pneumatic tyres were an unacceptable safety risk. A driver expects stability and then all the air comes out without warning. . . . . . Nasty. I can't understand what people were thinking. Solid tyres would be much safer Laughing Laughing Laughing Laughing Laughing Laughing

(it's a joke, people Rolling Eyes , those who visit the Aussy forum may know what it's about Wink )

Best Regards

Ian Very Happy
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Ian Harrison
Viper Racing UK
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sales@viper-racinguk.co.uk
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+44 161 343 2009
Championship winning Superkart race team 1997-2012
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Sam Zavaglia



Joined: 23 Nov 2004
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Location: Australia, Sydney,

PostPosted: Thu May 17, 2012 5:31 am    Post subject: Reply with quote

Ian,
It was actually because I didn't have bead locks on my wets.....big NO NO in our rules. We all should respect the rules, they are there for a reason. I was on a borrowed set of rims...should have known better, no excuse. Embarassed
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al nunley



Joined: 13 Nov 2006
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PostPosted: Thu May 17, 2012 7:10 am    Post subject: Reply with quote

I'm wondering why Av Gas? In every test we have conducted, Av gas is slower, significantly.
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All else being equal; Compression is the Holy Grail.
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Anthony Williams



Joined: 04 Nov 2004
Posts: 267
Location: United States, California,

PostPosted: Thu May 17, 2012 8:59 am    Post subject: Reply with quote

Ian Harrison wrote:

Anthony, I could tell you, but I'd have to shoot you

It's a SAFE. Lovingly crafted in the land of Ozz

Dot, pass me my 45!!

Bloody Hell - get the 45 Dot!!! Yikes I thought it was only the Yanks that buy guns!! Shocked I think I am going to stay out of Dot's way! ha ha

I will be very interested to hear how the package performs at Philip Island - good luck Ian.
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Ian Harrison



Joined: 23 Nov 2006
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PostPosted: Thu May 17, 2012 2:49 pm    Post subject: Reply with quote

al nunley wrote:
I'm wondering why Av Gas? In every test we have conducted, Av gas is slower, significantly.


Hi Al

Of course you have to optimise for whatever fuel you are using, just sounds like you missed the sweet spot with the Avgas. Also which type of Avgas were you using?

Like all fuels it has advantages and disadvantages, but in the end it's the overall performance that matters and it's what the guys are used to.

Anyway, by using "slow" fuel at least we are giving the other boys a fighting chance Wink

Sam you just brought another safety point to mind, bead locks can not only be ommitted in error, but can strip and fall out, with disasterous consequences. Pneumatic tyres . . . . I should cocoa!!

Best Regards

Ian Very Happy
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Ian Harrison
Viper Racing UK
www.viper-racinguk.co.uk
sales@viper-racinguk.co.uk
+44 7984 225 564
+44 161 343 2009
Championship winning Superkart race team 1997-2012
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al nunley



Joined: 13 Nov 2006
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PostPosted: Thu May 17, 2012 3:24 pm    Post subject: Re: Fuel - What's your favourite?? Reply with quote

[quote="Ian Harrison"]Avgas and 747 cool Cool

Best Regards

Ian Very Happy[/quote
Don't mind me, but why in the world are you using Av gas?
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If the data does not support the theory, get a new theory. (Al Nunley)
All else being equal; Compression is the Holy Grail.
45 years, in and around karting
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Ian Harrison



Joined: 23 Nov 2006
Posts: 1671
Location: United Kingdom (Great Britain), Manchester

PostPosted: Thu May 17, 2012 4:56 pm    Post subject: Re: Fuel - What's your favourite?? Reply with quote

al nunley wrote:
Don't mind me, but why in the world are you using Av gas?


Well don't mind me . . . . . . but why the heck not Laughing Laughing Laughing Laughing

Perhaps a little technical content with your comparitive test results would make a compelling and interesting discussion piece for the observers and contributors to this forum.

Personally, I like it. I know exactly how to get the best out of it, I know how it stacks up on the dyno and track against Euro unleaded race fuels, the lightning fast burners like MS109 and the leaded race fuels the likes of C12, etc.

Why?? you ask. It's an educated and informed choice taking into account all pertinent factors.

Best Regards

Ian Very Happy
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Ian Harrison
Viper Racing UK
www.viper-racinguk.co.uk
sales@viper-racinguk.co.uk
+44 7984 225 564
+44 161 343 2009
Championship winning Superkart race team 1997-2012
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Gerry MacNutt



Joined: 14 Apr 2012
Posts: 109
Location: Canada, not USA state,

PostPosted: Thu May 17, 2012 9:26 pm    Post subject: Reply with quote

Euro Av gas is different to the LL 100 Av gas available in north america
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Sam Zavaglia



Joined: 23 Nov 2004
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Location: Australia, Sydney,

PostPosted: Thu May 17, 2012 9:55 pm    Post subject: Reply with quote

AVGAS offers very good properties against detonation, even though it burns slower than unleaded.

AVGAS is half the cost of Unleaded.

AVGAS 100/130 vs AVGAS 100LL are the same.......on paper specs other than the colour. Green vs Blue.

AVGAS is made so planes aren't suppose to fall out the sky.
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al nunley



Joined: 13 Nov 2006
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PostPosted: Fri May 18, 2012 4:15 am    Post subject: Reply with quote

Why in the world would it be different? US to Euro. And do you have a link for that information?
All I know is that we tested it and it was slower.
On your dyno testing did you have an EGT gauge?
Is your compression ratio stock?
Do you know what Octane means?
And you say it’s cheaper? Sure isn’t here, last time I looked.
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If the data does not support the theory, get a new theory. (Al Nunley)
All else being equal; Compression is the Holy Grail.
45 years, in and around karting
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Sam Zavaglia



Joined: 23 Nov 2004
Posts: 1189
Location: Australia, Sydney,

PostPosted: Fri May 18, 2012 6:12 am    Post subject: Reply with quote

al nunley wrote:

Is your compression ratio stock?

So what is stock compression ratio on our engines? They come with every combo you could dream of...... and programable ignitions and many different pipes.


al nunley wrote:

And you say it’s cheaper?

AVGAS = approx $3.50 per litre
Racing Unleaded >$7.00 per litre


al nunley wrote:

And do you have a link for that information?

AVGAS 100 (Green)
http://www.msds.bp.com.au/msds.aspx?msdsno=SAV2104-AU
AVGAS 100LL (Blue)
http://www.msds.bp.com.au/msds.aspx?msdsno=SAV2103A-AU

AVGAS also provides greater resistance to engine seizure in 2 strokes as compared to using a Unleaded fuel (dry). It also provides a wider/safer window of tune/jetting as compared to unleaded.

Australian rules only allow fuels in Superkarts as; AVGAS, pump unleaded or FIA Race Unleaded (102RON/100MON)

There is no right or wrong, each to their own.......
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Gerry MacNutt



Joined: 14 Apr 2012
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PostPosted: Fri May 18, 2012 6:26 am    Post subject: Reply with quote

al nunley wrote:
Why in the world would it be different? US to Euro. And do you have a link for that information?
.



Sorry don't have more then this, it's just know around airplane people. but this is little snippet:

http://www.aopa.org/aircraft/articles/2012/120322lycoming-seeks-unleaded-approval-for-euro-fleet.html


BTW if you had followed what is now MotoGp, back in the day when it was 500s and 250s, they made they made the switch from race leaded to unleaded and it did not take very long to get and new combustion camber shape right and some other tuning to make just as much power as the older lead bikes did.
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