Rob's Hangar

And another flybarless from Walkera – should be available in about a month.

Here is a Video

Here is a tool I made to hold the stator when re-winding micro-sized brushless outrunner motors like the HP series (HP08, HP08-2, HP06, HP07). Materials used is a M5 threaded rod, M5 nut, and two pieces of a brass tube (5mmx6mm). The handle is from an old paint roll.

I rewound the HP08-2 with a winding scheme originally posted by Terry74 (thanks Jay!). Its 2 strands of 30 AWG (0.255mm) magnet wire, 5 turns, delta. Lots of detailed information on winding schemes and diy brushless motors can be found at the great website powercroco.de. Very good magnet wire can be found at Brocotts UK (search eBay).

For the record: Original winding of my HP08-2 bought from WOW Hobbies was 3 strands of appr. 0.2mm, 5 turns delta.

The ZULU trainer is an extremely light-weigth and durable canopy for the Walkera 4G6 / 4#6. At only 2.4g (0.85oz) it offers a significant weight saving and performance increase compared to the stock canopy.

here is the silver version almost finished (sorry, I should have dusted off the canopy for the photo , anyway, you get the details). weight as in pic is 4.7g, or about 0.7g more than the stock canopy.

the kit:

A new canopy design for the Walkera 4G6 / 4#6. With inspiration from the Henseleit MP and Three Dee RIGID canopy, I made this canopy longer and tightly closed around the swashplate.

Its easy to put on and uses the original rubber grommets and canopy mount.

And the best part: at 3.5gm it’s even lighter than the original canopy. Here are two pics one of the first prototypes. Still working on the colors and decal sets.

Here is my version of a 16″ (40cm) flying wing design based on a plan by Bob Skinner on RCGroups. Here it is flying at windspeeds of about 50Kmh (30mph).

Specs:
Wingspan: 16″ (40cm)
AUW: 103g (3.6oz)
Lipo: 850mAh 20C Zippy 1S
RX: Gyroless Walkera 2609 2.3g
Motor: HP08S outrunner 11,000(?) KV
ESC: Walkera 10A
Prop: HK 3×2″
Max. static RPM: ~28000
Max. static thrust: ~120g (4.2oz)
Pitchspeed: 85Kmh (53mph)
Servos: Walkera 3.7g WK-02-1
TX: Walkera 2801Pro, delta wing setup

With the winglets it flies like on rails, i like it much better than without them. I see some potential to make the winglets even smaller while keeping enough stabilization.

Mario took some slow motion shots of me doing the first outdoor flights with the Walkera 4G6 this year.

The rumours have been around for a while, now we have the first picture of the new 3-axis gyroscope RX from Walkera. As per nanoheli.net the flybarless version of the 4#6 will be called 4#6S. A flybarless 4G6 is said to be in the making too.

Fits into Walkera’s platform strategy
This development fits into the Walkera’s platform strategy, in which several models are based on mostly compatible components. The collective pitch 4G6 and fixed pitch 4#6 of FP based on largely interchangeable components. For the flybarless versions merely a new rotor head and receiver will be necessary.

Megatrend flybarless
It looks like the flybarless trend is finally moving into the sub-micro area. We will see if Walkera’s 3-axis sensor RX will deliver what is expected. Besides the quality of the sensors, the software will probably be the deciding point. Whether there will be corresponding update options – we have to wait and see.

The mysterious 5th servo port
It is also interesting that there are 5 servo ports seen on the RX2433 – for the fixed-pitch 4#6 however, only 4 servo ports needed. So what’s up with the 5th port? Is it a programming adapter or is this RX also a prototype for a CP version with the required 5 servo ports?