Multicopter – Seite 7 – music, gadgets and travelling

2017-01-142017-01-16

Eachine racer 180 carbon

The eachine racer is build from weak material. Eachine used a hybrid or mixed material out of carbon and I think fibreglass. Thats why they can offer this tiny devil for a really cheap price. Fibreglas is more flexible than carbon so the longitudinal strenght is around the half of carbon and the weight is at the same time up to 2 times higher than carbon. As far as I can see they used a hybrid which looks like carbon from the outside layer but is weaker and flexible. So the weight is higher than pure carbon. I will go into this later when I will go for optimizing the fotzie more. Attached there is a photo from the milling dust. At carbon the dust is completely black. Milling parts from the eachine will be a mixture of black and white which is a indication for another material. Eachine tried to find the best of all worlds. A cheap price and minimum costs.

My conclusion of this is mixed. They used weak and heavier materials for the frame and at the same time they use plastic screws on the mountings for the FC and the power distribution board. As far as I go deeper into the construction I figure out the weak points of this setup.

2017-01-14

Eachine racer 180 esc

So like I thought before it is not a big deal to exchange the escs. The esc are seperate boards stacked into the power distribution board and they are only soldered there. Even there are spare escs available at banggood. So if you kill a esc it is no hassle to change see attached photos…

2017-01-062017-01-06

Eachine Racer 180 upgrade for more power

Hi guys,

My upgrade kit of the eachine racer 180 got a proof right now. 6″ slowflyer props, the new 90N servo and the new constructed arms offer much more than you can imagine. Today I did some testgflights with a 2200mAh lipo and the max flight time is 15:30 mins in hovering. Thats an awesome result for this tiny setup even the agility is much more improved.

I changed to betaflight with the same settings like the original cleanflight (thanks to Quad123456). I also changed the ESC´s to the newest blheli version (thanks to seby docky). The servo is exchanged to a much bigger one with metal gears providing more than 90N of force, less friction and more power to the pitch. The props are exchanged to 6″ slowflyer but with strenghtened props by fibreglass or carbonfibre there will be a higher efficiency and longer flight times possible. The pain for an easy upgrade will be the bigger servo so the sideplates of the eachine have to be modded by cnc milling. I will do a flight video the next few days to get a proof of my setup for all the haters out there ;-).

stay tuned…

2016-12-282016-12-28

eachine racer 180 and the crash

Ok guys to keep you up the news about my eachine racer 180 I have to tell a short story.

After 2 short flight sessions I decided to upgrade this little beast. From now on I will call it „Fotzie“ due to a figure of speach of my friend Florian. Remind his UAV is from now on called Fick (hahaha). The last few days I put in lot of constructing to get bigger props installed because the 4x45x3″ props are completely inefficient. I decided to longer the arms to fit longer props but the biggest props which will fit on this frame will be even with longer arms 5″ due to the distance of the arms (measured from front to back). Another friend Jochen brought me to a solution to fit 6″ props. He said bend the arms (which is not possible with carbon tubes) but the solution was quiet easy. The Mounting plates take the motors now out of the middle of the tubes. The offset is not much but… ( I will come back later to the but…).

I constructed the new arms with the drawings in my head and voila it is possible to fit 6″ on the fotzie. Stock there are only maybe 4-5min flighttimes possible which is not acceptable for this size of quad. I endend up with this setup.