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Old 05-04-2010, 05:47 PM   #1
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Default How to measure my fuel tank?

Hi guys... at the end of the month we have national truggy race which have rules..
At the truggy the only rule that scares me is that the fuel tank must be 155ml with all the fuel lines and fuel filters...
I know that the ST-RR fuel tank ise 150ml but how can i measure all the fuel lines and my fuel filter?
i have 36cm fuel line and this fuel filter http://www.amainhobbies.com/product_...ty-Fuel-Filter
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Old 05-04-2010, 05:53 PM   #2
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Fill your tank. Pull fuel line from carb. Now blow through until fuel (or whatever you filled it with) comes out and plug it with your finger. Top your tank off. Now blow through and catch ALL the "fuel" into measuring device (some fuel bottles have markings or measuring cup) and measure it.
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Old 05-04-2010, 05:57 PM   #3
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Any medical supply store will have what you need to measure your fuel using Cadimman's method. (like a beaker)
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Old 05-04-2010, 06:03 PM   #4
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Quote:
Originally Posted by Cadimman View Post
Fill your tank. Pull fuel line from carb. Now blow through until fuel (or whatever you filled it with) comes out and plug it with your finger. Top your tank off. Now blow through and catch ALL the "fuel" into measuring device (some fuel bottles have markings or measuring cup) and measure it.
thanks but you told me how to see how much .ml is my tank... my tank is 150ml ..
maybe you forgot something.
1. full the tank with liquid.
2. blow the fuel until it reach the carb
3. refill the tank
4. blew the fuel from fuel lines into the meter and also the fuel inside of the tank at the meter

is this correct?
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Old 05-04-2010, 06:31 PM   #5
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He told you correctly, You need ot make sure your fuel line, filter and tank are full of fuel, then blow threw the pressure line while holding the carb line into a measuring cup that shows mills. When done it should read 150ml.
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Old 05-04-2010, 06:35 PM   #6
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Quote:
Originally Posted by the_winner View Post
thanks but you told me how to see how much .ml is my tank... my tank is 150ml ..
maybe you forgot something.
1. full the tank with liquid.
2. blow the fuel until it reach the carb
3. refill the tank
4. blew the fuel from fuel lines into the meter and also the fuel inside of the tank at the meter

is this correct?
Correct.
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Old 05-04-2010, 06:37 PM   #7
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i know already that my tank is 150ml
but how much is with the fuel line and fuel filter?? it must not be up of 155ml
my question is how i can see that the 36cm fuel line and my fuel filter have 5ml of fuel,,
sorry for my bad english.but i dont want to know how much is my fuel tank...the fuel tanks is 150ml
the rules said that the fuel tank with the fuel line and fuel filter it must be 155ml of fuel...
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Old 05-04-2010, 06:38 PM   #8
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FWIW, The guy this past weekend doing the measuring at the RC Pro series said 1 inch of fuel tubing is approx. 1ml/cc of fuel. A large fuel filter is around 4-6 ml/cc.

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Old 05-04-2010, 06:41 PM   #9
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Quote:
Originally Posted by toobad4u View Post
Yep, once you have all the fuel lines full of fuel, blow through the hose that attaches to your pipe, while holding the line that goes to the carb in the measuring device. (beaker or graduated cylinder) Be sure to push down on the rear suspension to get all the fuel out of the tank at the pickup. Read the side, and you have your measurement.

FWIW, They say a large filter is around 4-6 ml/cc.

Stephen
thanks Stephen... i think that i must put a very small fuel filter because this is big...
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Old 05-04-2010, 06:46 PM   #10
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I purchased a graduated cylinder on amazon.com to measure mine. That's what they use atthe big races plus it's extreemly accurate. It was around 10-15 bucks.
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Old 05-04-2010, 06:49 PM   #11
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Are you assuming that the tank it 150ml because that is what the book says, or have you actually measured it?

Stephen

Sorry, I changed my reply from earlier, after I posted it, but you had already quoted it. I saw someone else had already replied with the same answer. LOL
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Old 05-04-2010, 06:54 PM   #12
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If you are over, and can't cut out some fuel line, you can take an extra piece of fuel hose and put a bolt or screw in each end to seal it up and drop it in your fuel tank to take up space.

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Old 05-04-2010, 07:41 PM   #13
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Quote:
Originally Posted by the_winner View Post
i know already that my tank is 150ml
but how much is with the fuel line and fuel filter?? it must not be up of 155ml
my question is how i can see that the 36cm fuel line and my fuel filter have 5ml of fuel,,
sorry for my bad english.but i dont want to know how much is my fuel tank...the fuel tanks is 150ml
the rules said that the fuel tank with the fuel line and fuel filter it must be 155ml of fuel...


You have to measure your tank and lines/ filter as one as the guys have told you to do.

If you do it any other way it will not be acurate

I highly doubt your tank will be exactly 150ml

Also when you blow the fuel thru be sure to blow hard at the end to get the last bit of fuel thru from the filter stone.. wait a few seconds and blow again



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Old 05-04-2010, 08:32 PM   #14
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Trust me the tank is not 150cc. 140-145 maybe but 140 is closer the actual tank volume.
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Old 05-04-2010, 11:13 PM   #15
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+1 Manufacturers leave room for fuel tube & filters so tanks are normally under the 150cc.
Any event claiming they will check fuel capacity must make the test equipment available so you can check what you running.
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