Re: Fuel check question
 

As to not being able to purchase at the track , there are a lot of tracks like Island Dragway that would disagree with you .

Re: Fuel check question
 

Ok help me get the final vote..........does nhra tech show favoritism or partiality towards passing vp fuel ???? Yes or no

Re: Fuel check question
 

Thanks Dave

Re: Fuel check question
 

Pump gas as in unleaded gas pumped from a gas station? Seems unbelievable that anything would pass with unleaded present.

Re: Fuel check question
 

It does seem odd. Fuel passing at Woodburn the week or two before then marginal or failing in a different Division with a different meter.

Re: Fuel check question
 

Not pump gas but C10 unleaded passed

Re: Fuel check question
 

My friend got me Sunoco GT100 fuel by mistake, it's unleaded. When I gave it to the NHRA tech, he asked me why I had unleaded fuel in my car. NHRA can tell that there is unleaded present, it shows a positive on the fuel meter. Needless to say, I had to drain the tank, put in fresh Sunoco purple to get past the fuel check. Boy, was I pissed at my friend. But because Sunoco came out of a pump marked Cam2 gas with no other markings, they ended up giving me $2500. for my troubles. It was like being runner up at the race.

Casey Miles
248H "F" NHRA Stock

Re: Fuel check question
 

One part of the process that you may be taking for granted is the test instrumentation and its calibration certification. When we speak of calibration its not the "zeroing" of the meter that is done periodically but actual verification using a certified standard, typically cyclohexane at a precise temperature using a certified thermocouple in a controlled environment.

Having sat on a FIA fuel and lubrication committee that developed test procedures for international Kart racing gas testing this process is critical for field test meters that get transported about. The dielectric field test meters used by NHRA are typically reliable but do need to be calibrated periodically both for accuracy and part of their test criteria. I'm not saying their meters were wrong just mentioning this as a possible discrepancy especially from one division to another.
The most accurate test method is a gas chromatographer which are very expensive and not so mobile and are seldom seen at race tracks.

FYI: From my personal experience with dielectric testing temperature accuracy is critical in the equation.

Jim

Re: Fuel check question
 

Jim --I think that what you are describing is beyond the scope of most if not all of the NHRA people that are probably technically challenged to do anything other than the rudimenntery type of fuel test-- by this I mean ask the brand of fuel ,insert the testing probe into the container and press the button/s and read the results, then compare the reading to the acceptable range allowed by NHRA for that brand ---it ends up being a GO -NO GO scenario pass/fail whatever--now that I think about it I never really have seen the tester cleanse the tester probe from one sample(racer) to the next-- have you??? This action alone might possibly comppromise the next fuel batch results because of trace samples left from the previous fuel especially if that next sample is o so close to being borderline to begin with