Romf
New member
Hello,
I am Robert from Germany and I am just starting in the Hobby.
Today I finished the build of the Tiny Trainer with the polyhedral wings and a Power Pack A (german version from Graupner) and an 3s 850mAh battery. After completing the electronic setup I checked the Center of Gravity and almost dropped the Plane, because it was extremely nose heavy. After Putting the battery as far back as possible the Tiny Trainer still was strongly leaning nosewards .
Despite better knowledge I decided to make an unpowered test throw in the garden...
This first "flight" sent the plane in an almost ballistic trajectory straight in the ground and despite landing on our lawn, broke the prop...
I am a little clueless, what to do about that.
What I found out so far is, that my battery is slightly heavier than the equivalent one recommended in the flitetest store (83g vs 78g) and I have placed the power pod a bit less than half an inch (about 1cm) further to the front than Josh did in his build video. (The reason being that the Graupner motor, that I got, has the cables coming out to the side with strong kink protection and therefore required a bit more space)
All other parts of the plane seem exactly right with all holes matching, etc. the total weight of the plane with trainer wing, battery and electronics is about 290g. (10.2 oz according to google)
What is your experience here? Should I add ballast in the front? Or maybe buy a smaller (2 cell) battery? Help!
Best regards from Germany,
Robert
I am Robert from Germany and I am just starting in the Hobby.
Today I finished the build of the Tiny Trainer with the polyhedral wings and a Power Pack A (german version from Graupner) and an 3s 850mAh battery. After completing the electronic setup I checked the Center of Gravity and almost dropped the Plane, because it was extremely nose heavy. After Putting the battery as far back as possible the Tiny Trainer still was strongly leaning nosewards .
Despite better knowledge I decided to make an unpowered test throw in the garden...
This first "flight" sent the plane in an almost ballistic trajectory straight in the ground and despite landing on our lawn, broke the prop...
I am a little clueless, what to do about that.
What I found out so far is, that my battery is slightly heavier than the equivalent one recommended in the flitetest store (83g vs 78g) and I have placed the power pod a bit less than half an inch (about 1cm) further to the front than Josh did in his build video. (The reason being that the Graupner motor, that I got, has the cables coming out to the side with strong kink protection and therefore required a bit more space)
All other parts of the plane seem exactly right with all holes matching, etc. the total weight of the plane with trainer wing, battery and electronics is about 290g. (10.2 oz according to google)
What is your experience here? Should I add ballast in the front? Or maybe buy a smaller (2 cell) battery? Help!
Best regards from Germany,
Robert