This is the fastest frame I have built to date (113mph/182kph). As of right now, I am unaware of any other frame that has hit these speeds using a 4s lipo battery (I am not sure what the Nissan 115mph quad was using, all I can find is “1400 mah battery”)
Update: the Nissan quad was using a 5s lipo battery (thanks to SirCrashaLot for the info!)
This is the first completely custom designed frame I have built.The goal for this project was all about speed and set out to test out the following design features:
- Inverted front motors to align CG and CT – explanation is here.
- Lightweight frame (75g) using two 10mm diameter carbon fiber arms (1 solid arm for the front, 1 for the back). Explanation for round arm concept is here.
- Pylon type motor mounts (detailed explanation is in the works)
- Quality ESC’s that do not need direct air flow to stay cool
- Adjustable motor angle to reduce the cross section (as viewed in the direction of movement) at high pitch angles
- Streamlined design including motor wires running through the arms
Under the body, the build is far from clean since I was cramming everything into such a tight space. The GPS antenna is hidden from view (behind the rear arm). It is basically mounted at a 45° angle from the receiver. This is an attempt to prevent it from losing satellite reception when pitched at different angles. Initial results were mixed and I originally had it mounted at 30° which interfered with the slipstream.
This was the first day out with the B1. At the time I was using the Emax RS2205 2300kv motors:
This is the latest speed run that wasn’t supposed to be a speed run (never thought I would break 100 lugging around a Go Pro). I used the Brotherhobby T2 tornado 2206 2300kv motors: