Tag: 1. Juli 2015

So the new carbon fibre props arrived a few days ago. It took some time because the german post is in labour strike at the moment. Every package is arriving late or only possible to pick up at their office.

I had to check the Deutsche Post Office last week to get them. When I opened the package there are a good bunch of propellers I thought. At the first testflight they did some behavours to the TICK I was wondering first. The motors shook and killed some of my motor bumpers. After this flight I checked everything and especially the edges of these props and realized that the props have much burrs on the wings. So the next step was to clean the props to perfect shape. It tooks about 2 hours with a file and sandpaper. After getting this done I started to balance every prop. For this I used a prop balancer from Hobbyking I ordered long time ago. It gave me a good result and the following testflights wroked great until saw againg worn out bumpers on the motor mounts. When the motors are under heavy load the bumpers getting killed. I have some ideas for a solution right now but sticking for the construction of the frame so i will go for a direct mount of the motors first not to waste too much time right now.

I´m facing some problems the last few test flights with my newly introduced motor mounts. The construction is really good and gives many benefits for the most low-vibration frame on the market. The only problem I have is that the bumpers are not strong enough to bridle the power of the motors. It happens after some test flights that the rubber bumpers are worn out and start to get the motors shaking. Although with new bumpers it is a hard indicator that a motor or propeller is not balanced they will shake. I had this when i used the new full carbon props last week. More on this in a new post.

So the rubber has to be more stiff or I have to realize the dampening in a different way. To continue with the construction I am thinking forward to stop the work with the anti vibration of the motors and fix them directly on the frame but I have some more ideas how to decouple the motors. Tests go on…