• Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

  • 2 Stroke Husqvarna Motorcycles Made In Austria - About 2014 & Newer
     TE = 2st Enduro & TC = 2st Cross

TE/TC Hearing detonation in front of motor

Key points:
-100LL is not 100 octane as we rate it for pump gas (R+M/2). It is actually ~96 octane by that measure.
-Quality and consistency is better than pump
-Shelf life is better than pump.
-Cheaper because you are not paying Road Taxes. Legally it's like running red dye... no no on the street.
-Lower Specific gravity than pump (density) means you actually run leaner with the same jetting.
-Important one here! Lower flame speed than race gas. 100LL is designed for 3500RPM operation. If you run consistently higher than that you will be spitting unburnt fuel out the pipe. Most pre-run or play cars don't spend too much time over 3500RPM​
 
The burn rate has a lot to do with fuel mixture and compression. All high octane race fuel has a slower burn rate, if you're "spitting unburnt fuel out the exhaust" then you need to tune the engine not blame the fuel. This is the opinion of the VP guy and once again no scientific proof. Can you produce proof that AV100LL is specifically designed for engines operating at 3500 rpm and should not be used in any other application? VP has specific literature on each one of their fuel products but I question the VP salesman who is making claims against AV gas since he is motivated to convince you to spend $4 more per gallon. Like I said in an earlier post, lots of opinions yet no proof of the claims.

I agree VP110 is better than AV100LL but the only engines that I have tuned that ran noticeably better on VP110 were maxed out on compression requiring higher octane and VP110 allowed me to get a little extra out of the engine by changing the spark and fuel curve. This makes perfect sense because 110 is obviously higher octane than 100 no matter how you rate it.
 
First this was not from the VP guy and was from a science nerd I know that study it for a thesis....

If you can read.....

Av Gas is 96 octane so about the same as pump premium.....

the consistency IS better......

Spitting raw fuel if not rejetted which means no "opps" I forgot to get Avgas so I will just run pump.....
 
Yes i have to agree on pump gas is not good, who knows probably worse than av gas for racing. I mix 20% race with pump till i can find a marina that sells non ethanol 93 or 95 oct.
Yes i read av gas for low rpm but my riding style sounds like a cessna 172 at 3500ft anyway, i hardly rev high
 
Well, I ran the VP110 at a scramble today and had no sign of the noise. I'm putting paid to this one. Thanks for the advice, all. Carry on.
 
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