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05-22-2004 05:34 AM #1
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05-25-2004 01:50 PM #2
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05-25-2004 09:31 PM #3
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05-26-2004 12:21 AM #4
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05-26-2004 08:02 AM #5
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05-26-2004 03:16 PM #6Registered Member
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Not a good idea for a number of reasons.
Avgas isn't octane-rated the same as pump gas, so often what looks like a high-octane gas is for practical purposes lower than a high-octane pump gas. It's also often leaded, which poisons O2 sensors and catalytic converters and, more importantly, poisons everyone who comes into contact withyour exhaust (one big reason to switch pump gas to unleaded in the first place). It also isn't oxygenated like pump gas, and can mess with your A/F mixture.


If you can't go fast with 90hp, 900 won't do you any good.
-bwob
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05-27-2004 01:32 AM #7
not that bad really
100LL really IS 100 octane. the 'LL' is supposed to stand for low lead but that's relative to what they had before - it's definitely heavy on the stuff. that said, i know of someone who uses it in all his cars (we're talking dozens here) and has never had an issue. further, considering that this is a bike project, it's not likely to have either an o2 sensor or a cat. and while it was definitely a good idea to stop tens of millions of cars spewing lead into the atmosphere, a single bike is not going to make much of an impact. a few thousand airplanes use lots of the stuff every day and i've yet to see a 2-headed baby result from it (then again i don't hang around babies much). avgas is about 1/2 the price of 105 octane unleaded race gas. also, 110 octane race fuel is just as leaded as any av.
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05-27-2004 02:02 AM #8
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05-27-2004 02:03 AM #9Registered Member
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Used to use it for racing bikes all the time....
it was sort of a legal cheat. The WERRA rules stated we had to use 'pump' gasoline, so we used avgas. We were able to run higher compression with lower temperatures (prevent pistons sticking in our 2 strokes) and really get some performance in that hot W. Virgina weather.
RoyL


Better Living Through Technology
Happier Lives Through Understanding
More Fun Through Fast Cars, Good Wine, and Great Music
(and doing a perfect late-apex!)
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05-27-2004 02:14 AM #10
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05-28-2004 03:24 AM #11
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05-28-2004 09:28 AM #12
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05-28-2004 10:19 AM #13Registered Member
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Re: not that bad really
110 octane race fuel is just as leaded as any av.
I never said it wasn't... the highest AKI you can get unleaded in the US is 104.
and while it was definitely a good idea to stop tens of millions of cars spewing lead into the atmosphere, a single bike is not going to make much of an impact.
Ja, but on this quick note, we already have three "just one" people, and extrapolate that out, you get a lot of "just one" people. Like all of the people on all of the message boards who proudly boast that they've taken out their cats on their street/commuter cars. Like you said, most don't need it, which is why I recommended against it - it adds up. There is a ridiculous idea amongst the US populace that higher octane is always better, regardless of need...
I don't like babies, either, but other people are more than willing to hang around them for us. Most of the reserach has been done with workers and comparing regions where leaded gas is legal vs. illegal for street cars - merely becasue they're a lot easier to control - but research on chronic exposure to low levels of lead (like you get when your neighbor uses leaded gas to commute) is starting to appear, which is more relevant to the OP's intent.
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=12083707
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=10991779
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=10940962
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=11256853
I'm not criticizing you, becuase you don't commute or run your errands in a car. If we all did that, we'd be a lot better off...
BTW, I'm selling the 325 and getting a motorcycle.


If you can't go fast with 90hp, 900 won't do you any good.
-bwob
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05-28-2004 03:15 PM #14
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05-28-2004 09:59 PM #15
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05-29-2004 10:46 PM #16
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05-30-2004 08:35 PM #17Registered Member
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A beginner\'s bike. I was thinking
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05-30-2004 09:47 PM #18
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05-30-2004 10:02 PM #19
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05-30-2004 10:08 PM #20
try a yamaha seca II
they're cheap and pretty nice. i'd recommend against a 250. get a 500-650, just find one that fits you. also getting decent tires should be the FIRST thing you do after buying one. a used bike will most likely have tires with middles worn square - this REALLY screws up the handling and makes it much more difficult to learn and more dangerous too.
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