| Image Comments |
| SteveM | 06-Oct-08 02:21 |
| The weight of the fuselage is 5.5 oz with all electronics. I estimate the weight before covering to be around 8 oz. I wanted a AUW of 10oz (~70 watts/lb) but had hoped to get 7-8oz. Unless I do some serious wood removal I'll be closer to 10oz AUW. |
| SteveM | 06-Oct-08 02:43 |
| Looking at all that empty space between the motor and battery made me think about the balance point so I bolted on the wing and checked it out. It balances about 1/8" aft of what Guillow's recommends for R/C. Once I had the wing on I couldn't resist the temptation to drive it around the floor a bit to test out the steering, which I am happy to say worked quite well. |
| bbaumer | 06-Oct-08 12:17 |
| tail heavy is bad, very, very bad |
| SteveM | 06-Oct-08 14:46 |
| I find that flying gets a little boring unless the plane is tail heavy which adds a touch of excitement. ;-) The CG right now is about where Guillow's suggests for FF. And since I have removed wing incidence I'm not sure how much I should trust their CG location for rudder only RC control. I guess I won't know for sure till the maiden flight. |
| poppy | 06-Oct-08 18:44 |
| Nice work! I like the innoative amd scale tailwheel operation. Most would have chosen to hook wheel to rudder, thus ruining the scale appearance. How is flying the trainers coming along? You should be the old pro by now. |
| SteveM | 07-Oct-08 01:56 |
| Thanks Poppy, but now that I think about it I will use a Sullivan cable on my next RC conversion. Sadly, I have not been flying for at least 2 months as I picked up a second job that averaged an extra 25 hours a week. Now that that is over I am back to building again and am keeping my eye on the weather reports so I can find a good time to dust off my transmitter. |
| jgood | 07-Oct-08 08:27 |
| Looking good Steve. Although 10oz does sound a little heavy - this is going to be one fast Mustang at that weight! What battery is that? How heavy is the spinner? |
| SteveM | 07-Oct-08 12:22 |
| The battery is a 2S 640mA that weighs 41.5g (1.47oz). Since max current is about 6 amps the flights should be about 5-10 minutes. If I want to save weight I can look at the TP Prolite 2S 480mAh (23 grams) or 730 mAh(34 grams). Or if I need a little larger battery with minimal weigh added, the TP Prolite 2S 910mAh at 46 grams.
The spinner is just the prop adapter nut and it only weighs 3.5 grams. I have seen people use heavy prop nuts to help balance out the plane, but I don't think I'll need to get that crazy on this plane. Since Solite might only add an ounce, it is possible my AUW will be closer to 9oz. |
