As avgas is difficult to get hold of, maybe expensive, I wonder what the advantages is, using avgas and what it takes to set the bike back to normal tankgas:
Ignition timing ? Change of compression, heads ? jets for sure.
Someone told me its lower octane than tank gas. Is this correct ?? _________________ Poul
"If Life Gets Boring, Risk It!"
MC21SE, KISS box
MC21SP, HRC box, racing loom
Last edited by pbekkerh on Thu Nov 22, 2007 11:31 pm; edited 1 time in total
u could use shell vpower instead of avgas, shell claim it has a octane rating of 99 RON and i use it in all my bikes as it doesent make much of a difference price wise to normal petrol on a bike. _________________ Honda nc23 CBR400 AERO 1986, 1990 honda NC23 Tri-Arm, 1987VFR400 NC24 Rothmans Rep, NSR250 MC16 1987, CL250s 1983. Moto guzzi zigolo 110cc 1958. Fantic 50cc 1972. Suzuki Cobra Race bike 500cc 2t 1975 , GP125 1975. Triumph T110 1954. BSA Thunderbird 1955. Ariel VB 600 1952, 1990 MuZ 125 etz.
More compression, more advance, leaner jetting = more power Without any of the above its a waste of money and on the street its kind of unpractical. _________________ 1995 A kit TZ 250
1994 Rothmans NSR 300sp SOLD
1998 RM 250 freestyle/motorcross
1998 Meathanol burning CR 500 AF super retard/motorcross/sand dunes/play bike
As Jeremy says, you're wasting money unless you adjust your settings to take advantage of the fuel characteristics. This goes for any fuel, not just avgas.
I used to run my street bike on avgas 100LL, but I was a little worried about the 200 litre drum at my house, so I switched back to pump fuel when it ran out. This meant lower compression, less ignition advance and a richer carb setup. Lost a couple of ponies, and lost that delicious smell, but much easier just to stop at the gas station to fill up.
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