Mamba/ElectricConversion
This page contains tips on converting the Mamba to Electric.
The Mamba was designed with electric conversion in mind. The aircraft has designed in a forward hatch that makes access to batteries and connectors easy. The 'fuel tank tray' is located to work as a basis for a battery mount.
Flight time is about 4-4.5 minutes with proper throttle management and a good reserve. Make first flights about 2/3 of this time and check remaining capacity while breaking in and balancing your packs.
The primary conversion is STRENGTHENING the 'fuel tank tray' to work as a 'battery tray'.
Power System (as demonstrated by Flex innovations)
- E-Flite 360 - 180kv Motor(EFLM4360A)
http://www.horizonhobby.com/power-360-brushless-outrunner-motor--180kv-eflm4360a
- 70mm total motor standoffs
- Potenza 5000 6S 60C batteries were used (Two in series (12S))
- Castle 160HV ESC
- Mejzlik 25 x 12 Prop
The chosen motor uses the same bolt pattern (and firewall hole locations as a DA Gas Engine making mounting easy. The Prop bolt pattern also matches the DA 4 bolt pattern.
We reinforced the battery tray as follows (thin and medium CA Glue was used for all)
- Approximately 1/2 wide strips of Carbon plate (~.080" thick) was used in two places to reinforce the structure under that tray. It was wrapped to the structure with carbon chord (toe).
- At the aft end of the battery tray oriented vertically. Carbon chord wraps used.
- At the middle of the tray oriented flat against the tray. Carbon chord wraps used.
- Two strips of Carbon plate were laminated to the top of the tray to stiffen it and to apply velcro to.
- The aft edge of the plates were thinned to allow carbon chord wraps to be applied to prevent delamination.
- A hole were made in the front center of each plate, and the plated was wrapped to the existing structure with carbon chord to prevent delamination.
Motor and ESC
Tray Preparations
Tray Preparations
1 of 2 Carbon Strips
Strip in Middle
Aft Wraps
Overview
Aft Wraps
Middle Wraps
Middle Wraps
Radio Tray
