scale fuel tank size

[sport hydro]

I am in the process of rebuilding a Dumas 1/8 scale PAY N PAK. After reading many topics on tank position, I was looking at putting the tank(s) under the deck behind the motor. I will be running an OPS 67. What would be about the minimum fuel capacity I would need to run in race trim? The reason I am asking is that there are two smaller compartments directly aft of the motor mount but will probably only fit an 8 oz. in each side. Would this be enough? I'm trying to free up the area in front of the motor for the radio.

 

[Roy Munoz]

2 8 oz tanks would be o k just add a 4 oz hopper tank too...

 

[Mark Anderson]

Two eights are plenty of fuel. As Roy said I would put a small tank near the carb to act as a bubble trap. i normally use a 2 ounce for the header tank.

 

[sport hydro]

Thanks, The 8 ounce would not fit in the compartment so I opened up the one behind it and I'mm installing a 10 oz on each side. I will use a 2 oz. as a hopper tank mounted on the engine mount.