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[al2612]

First attempt at a full scratch build, a 32" Downeast / Lobster boat style hull in ply, to be built to my own design as a picnic / fun boat. Have  acquired an MFA Torpedo 500 and a 40mm 4 blade Raboesch prop, 175 series I think. Hoping to run direct drive. Any advice on battery size  voltage and Mah to get a turn of speed if required and a reasonable run time. Lipo preferably as I have a 2/3 cell charger from a previous project.  TX

[dougal99]

I use a 12v 7Ah SLA in my Sea Queen, which planes quite nicely. These motors can call for <13 Amps, so for a decent run you will need a big capacity battery.

[al2612]

TX for your input Dougal. Dont really have enough room for a big  SLA as the rear of hull has no depth.  Had been considering 2 x 11.1v lipos in parallel  to get between 4000 / 6000 mah. which could fit each side of hull in forward third of hull. PDF attached of drawings used in basic hull construction to see restrictions

[al2612]

Looks like i did not send previous post correct - should read - dont really have room for big SLA  was considering 2x 11.1v lipos in parallel to get more Mah fitted each side of hull in forward part of hull - please see pdf for restrictions

[Stan]

HI Please see my p/m sent to you.

Stan.