yamahakidd

i am building a dumas eagle hydroplane and it says that i need two 8oz. tanks. that seems like a lot to me. i am looking for tips or clues on what size tanks that i really need.

lipdaddy

It depends on the engine and run time your looking at. It's easier to build for more than try to make room later.

yamahakidd

well im looking at abouta .45 engine and i dont think that im ever going to be running for more than 6-7 minutes.
so is 16oz about right?

Dan S

just for comparison: 7 to 8 minutes is what I get on 8oz with a .21

Dan

lipdaddy

If I were building it I would put 16oz of fuel on board. Then adjust accordingly if needed.

Ron Olson

My Feedback: (1)

You might run only 10-12 oz. but it's nice to know that you have extra onboard.
Most kits are set up with racing in mind whether or not you do. We like to figure that we like ot have enough fuel to run 12 laps. If the needle is rich during a heat they of course can draw more fuel but if someone takes off once the "You're on the clock" goes off you can run maybe 6 laps before the racing actually starts plus one lap after the heat is over.

toyotatruckin

Id go for a 10-12 oz and if you find you need more run time add a hopper tank

advanced builder

That Dumas Eagle build, nice looking Hydro. You do need to assess them tanks from time to time., center of gravity,with fuel,is critical. COG is behind sponson end, equal to turn fin is Great.