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Post by gregp07 on Mar 4, 2011 22:54:30 GMT -5
I have read the rules and 4CYCLE GASOLINE fuel tech is: c. 4-Cycle Gas Classes– i. The tech inspector will draw one gallon of fuel from the source of race spec fuel. The sample will be kept in a shaded, cool location, under the control of the tech inspector. A Digitron meter must be set to 000 using the controlled sample. Zeroing the meter with spec fuel as opposed to using the cyclohexane method due to the potential for error due to reagent contamination and other environmental factors. ii. Competitors are allowed plus or minus 10 on the meter. Competitors are eligible for one re-check following a failed test. NOTE above...plus or minus 10!!! From reading of 000 Check the SIRA race track "MAP" page for specific location for "spec" gasoline station location for EACH event! maps.google.com/maps/ms?hl=en&gl=us&ptab=0&ie=UTF8&msa=0&msid=113325865051993150751.0004474d6f0f0a72d740f&z=7 |
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Post by gregp07 on Mar 4, 2011 23:14:42 GMT -5
Below is the post from 4 cycle.com that got me started on this..just want everyone to be advised of this before the season starts..so ther won't be any confusion when the season begins! karting.4cycle.com/showthread.php?t=365339 |
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Post by karter72 on Mar 5, 2011 9:12:43 GMT -5
Greg
SIRA has done fuel testing the same way for 8 years on pump gas, I know because I did tech back in 2005. I read most of the comments on 4-cycle and it seems like not everyone is getting fuel at the same location or they are mixing fuel. I know last year we had a few problems with fuel and the fuel in question was not purchased at the station listed by the club and most of the clone racers are more than willing to share fuel if somebody doesn't have the right fuel. Not saying we won't have any problems but the system in place is pretty good
Rich
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Post by gregp07 on Mar 5, 2011 11:47:31 GMT -5
Just making sure everyone knows where the spec fuel sites are and that the testing procedure is +/- 10..I think in the past +/- has been more than 10..I would recommend if you don't buy at the spec location you should have your fuel tech'd before heats and mains...could easily be a DQ
AND if you read the rule for 2cycle vs 4cycle the test procedures ARE different.
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Post by animaljockey on Mar 6, 2011 19:38:51 GMT -5
will you be doing tech for the mods also? is their going to be fuel tech in this class?
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Post by racer61 on Mar 6, 2011 20:09:08 GMT -5
RULES 365 LBS. KART & DRIVER MIN. 220 CC MAX.
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Post by Garritt Powell on Mar 6, 2011 22:13:01 GMT -5
RULES 365 LBS. KART & DRIVER MIN. 220 CC MAX. if you read in the rulebook there is a water test prescribed for the methanol engines and the rules listed for the 220 class do reference it. I personally don't care. But the rulebook needs to be our bible. |
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Post by Garritt Powell on Mar 6, 2011 22:16:46 GMT -5
Here's straight from the rulebook
15. 220cc 4 CYCLE MODIFIED
a. Open to drivers 15 years and older.
b. Minimum weight – 365 lbs
c. Gasoline or Alcohol (See Item C.)
d. Silencer required. RLV b91or b91MO muffler
e. Any clutch permitted.
f. Maximum 220cc displacement. Single-cylinder, air-cooled, overhead-valve
four-cycle engines.
g. Must be carbureted and naturally aspirated
h. Tire Size: Any / Compounds: Open
HERE'S WHAT IT REFERENCES.
C. FUEL
1. Acceptable fuels/lubricants are:
a. 2-Cycle – gas and oil:
i.. No restrictions on type of fuel or oil, other than it meets/passes all
guidelines/testing procedures as described in Items 2.-3. and 5. (below).
ii. All fuel (or anything else entering the engine other than atmospheric
air) must pass through the inlet needle and seat of the carburetor(s).
iii. Some Unlimited class categories run open fuel but MAY NOT utilize
any banned substances.
b. 4-Cycle – Methanol
i. Testing will follow guidelines as found in section 5 “Testing
procedures”
c. 4-Cycle – Gasoline
i. Testing will follow guidelines as found in section 5 “Testing
procedures”
HERES HOW THE TEST IS SUPPOSED TO BE DONE, although in the past, I have never seen it done, maybe it's time we START...
b. 4-Cycle Alcohol Classes–
i. A “Water Test” will be used to check for additives to methanol fuel.
Methanol fuel is completely water-soluble and such a test will display any
additive.
ii. Equal parts of methanol from the competitor and pure, distilled water
will be combined in a clean, transparent container. The mixture shall be
shaken and allowed to settle for approximately 30 seconds. Methanol with
no additives will yield a completely clear liquid once settling is complete;
the test sample will be compared to a sample of pure, distilled water for
clarity.
iii. Since contamination may occur when an illegal fuel is detected, all
equipment, test containers and hands that come into contact with the
illegal fuel must be cleaned. All items, including hands, must be cleaned
PRIOR to testing another sample.
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Post by karter72 on Mar 9, 2011 14:46:43 GMT -5
We probably need to change the fuel test for the 220 I'm guessing that you normally don't run regular pump gas in those? The way I figure it the higher compression engines would need a higher octane racing fuel. That's just my opinion
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Post by Garritt Powell on Mar 9, 2011 19:13:11 GMT -5
We probably need to change the fuel test for the 220 I'm guessing that you normally don't run regular pump gas in those? The way I figure it the higher compression engines would need a higher octane racing fuel. That's just my opinion everyone ive ever seen in the 220 class runs methanol, therefore eliminating the need for higher octane, but do we still test methanol as prescribed in the rules listed above? |
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Bowser
Junior Sportsman
Posts: 28
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Post by Bowser on Mar 10, 2011 17:23:08 GMT -5
I really don't care myself. It would be nice to be able to run a cylinder lube. Maybe not for the performance, but to save our cylinder$$$$$
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Post by Garritt Powell on Mar 10, 2011 18:48:30 GMT -5
I really don't care myself. It would be nice to be able to run a cylinder lube. Maybe not for the performance, but to save our cylinder$$$$$ no need to save cylinders, just resleeve them  |
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Post by mikeh on Mar 11, 2011 11:33:23 GMT -5
I've read those posts on Bob's and I can tell you they are cheating or buying their fuel from different places. My First SIRA race I had my fuel checked and it was high.....I purchased it on the way to the track and at that time it was kind of a secret on where you were to buy fuel. That is why the spec stations list has been added to the website. Everyone knows and I have watched the Tech over the last two years. There has only been one issue and that was because as Rich said the fuel was NOT purchased at the spec station.
We have done the water test at some of the bigger races, primarly in the FH class, but it should be checked on a regular basis. Just got to remember to have distilled water on hand.
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Bowser
Junior Sportsman
Posts: 28
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Post by Bowser on Apr 12, 2011 19:22:33 GMT -5
What is the verdict on the mod fuel? Last season we ran upper cylinder lube. With the rules, this wouldn't pass. Can this be amended?
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Post by Garritt Powell on Apr 13, 2011 12:39:54 GMT -5
What is the verdict on the mod fuel? Last season we ran upper cylinder lube. With the rules, this wouldn't pass. Can this be amended? I'm unsure what tech is going to do for this, if you want bring it up maybe at the drivers meeting but as of right now, i'm gonna be safe not sorry, no fuel additives for me. |
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