# Foil selection & Build efficiency, range

**URL:** https://foil.zone/t/foil-selection-build-efficiency-range/1964
**Category:** Foils & Boards
**Created:** [June 20, 2018, 10:58am UTC](https://foil.zone/t/foil-selection-build-efficiency-range/1964 "2018-06-20T10:58:17Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![SaltyPaws](https://foil.zone/user_avatar/foil.zone/saltypaws/32/2513_2.png) [@SaltyPaws](https://foil.zone/u/SaltyPaws)
#### Post date: [June 20, 2018, 6:16pm UTC](https://foil.zone/t/foil-selection-build-efficiency-range/1964/4 "2018-06-20T18:16:06Z")

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> **[Hydrofoil Design Tool](https://foil.zone/t/hydrofoil-design-tool/1298)**
>
> Here is a numerical design tool which is really helpful for designing hydrofoils. This Excel spreadsheet was created by Zach Hoisington, a senior aircraft/aerodynamics engineer. With this tool you can adjust speed, weight, wing size, motor pod...

This an efficiency calculator

I’m looking forward to seeing your guide. Let us know what else you are looking for.

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