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by xiangyu
Today, 5:15 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 206
Views: 10618

Re: Wright Stuff C

how did you already get the kits apparently everyones got back ordered??
I'm not sure, but my coach ordered pretty early in the season and emailed Dave last week. Our kits are probably the first batch.

Xiangyu
by xiangyu
Today, 9:02 am
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 206
Views: 10618

Re: Wright Stuff C

commenting on Xiangyu's results. Video, I find it a little hard to see what the plane is doing from that perspective, I recommend you take more from the side, I find it easier to see flight attitude that way. Agree with Eric's comment on where you stand. Once you launch, back slowly away from the p...
by xiangyu
Today, 9:01 am
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 206
Views: 10618

Re: Wright Stuff C

Xiangyu, As for possible improvements in flight duration under a 30 ft ceiling, there are many variables to test. Matching rubber to propeller, propeller design, propeller pitch and learning to wind close to 90% of breaking turns are a few of the most important. Actual projections of flight time I ...
by xiangyu
Yesterday, 7:32 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 206
Views: 10618

Re: Wright Stuff C

Xiangyu, Sorry to hear about all the homework. Yes, very good idea to practice winding to destruction. Tan SS should stretch 10x relaxed length before breaking. A nondestructive breaking can be accomplished by hooking over a doorknob (lubricate first and pat most lubricant off) and stretching 7x an...
by xiangyu
Yesterday, 7:12 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 206
Views: 10618

Re: Wright Stuff C

The steep dive may have been from the sudden movement of your team mate ducking. We noticed that too so now we anticipate getting hit and move away slowly ahead of time. I'm curious to see if you're using up most of your knots in 1'08". You can see we use all of our knots in 1'30" running three bla...
by xiangyu
Yesterday, 7:10 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 206
Views: 10618

Re: Wright Stuff C

If, for example, your loop length is about 30.5” (.0415 g/in), and your stretch 5x relaxed length to wind (after break in, properly lubed) an 85% breaking turns number would be 4,100. Probably need more back off (the large number of backoff turns needed is another indicator of needed changes (thinn...
by xiangyu
Yesterday, 1:20 pm
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 206
Views: 10618

Re: Wright Stuff C

I just came back from the gym. Overall it was okay. When we got there the fans were on blowing pretty hard and we tried to fly the plane but it didn't work out great (the fan is one of those that's attached to the ceiling and blows straight down - We consistently got around 50s - a minute in that co...
by xiangyu
Yesterday, 6:50 am
Forum: Wright Stuff C
Topic: Wright Stuff C
Replies: 206
Views: 10618

Re: Wright Stuff C

Here's our first attempt at a stop action video (I plan to keep my day job): https://www.youtube.com/watch?v=uBAMoaZyWhQ We now have two contest planes ready to go that are identical in every way except for a slight difference in the amount and placement of ballast due to slight differences in wood...
by xiangyu
September 28th, 2019, 3:38 pm
Forum: Gravity Vehicle C
Topic: Wheels
Replies: 12
Views: 479

Re: Wheels

What is the difference in performance between the green one and the orange one? I know from the description one is soft tread and one is medium, but how do they vary in performance? Does the green one give more traction? How much better is it? Second question: How do you mount the wheels to the thre...
by xiangyu
September 28th, 2019, 3:23 pm
Forum: Gravity Vehicle C
Topic: Gravity Vehicle C
Replies: 115
Views: 5083

Re: Gravity Vehicle C

Can someone give me some guidance over the making of the ramp? What materials should I use, where can I get them, anything I should watch for etc.

Also, what do you do to make a seamless transition from the ramp to the floor? (so the vehicle exits the ramp smoothly).

Thanks in advance!

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