Scott, if you've already built the dolly - give it a go! Personally, I'm really interested to hear if it works! I feel you might need larger wheels though if you intend taking off from grass.
Last edited by Ian Davidson; 28th April 2012 at 12:35 AM.
I've got a document written up with photos etc so I will be te sting it out and writing it up.
Yeah for grass it will need the bigger 3" but those are heavy....
Light hardpack dirt or pavement and this will work.
2 thoughts here:
1. like crash said . . . I have hundreds of launches similar to his style but thumb over top. . . prop strikes 0, heaviest wing I have done this style of launch with 6# 13oz.
2. If I was going to use the dolly I would consider shortening the legs so the prop just clears by maybe like an inch the lower pvc cross members . . .to help reduce chance of nose over while running on the ground. And I would also put a slight up angle on the pvc giving your ZII a slightly nose high attitude.
I am about to set-up a 10# Monster that will be on 10-12s and was considering a "slingshot" launcher but if you have success with this I just might give it a go with my D50 on HV
Last edited by Danub; 28th April 2012 at 12:58 AM.
bigger diameter wheels, shorter height
OK Will keep everyone posted, it does need to go lower....
Working on my tricopter tonight
I would leave around 5 cm under the prop to have some margin and lower the risk of a nose down crash and give more stability.
The easiest and safest way to launch 2kg wings stays the bunggy in my opinion.
For my little input, I was launching my Zeph without motor running, throwing her by the back, results: 60% of success rate
Then I try to launch by having her vertical on the ground, full throttle and grabing her (thumb down, four fingers up) 15 cm from the tip by the leading edge.
Never tried something else from that day! 100% sucess rate, 100% fingers, 80% peaceful mind state
TBS Zephyr, real FPV vids on the way:
If it is broken, fix it. if it isn't broken, I'll soon fix that.
videoaerialsystems.com - Performance video piloting
My Herc cart has a servo with a steerable nosewheel that disconnects on lift-off ( servo connector). Nice for taxiing around etc.. 3 wheel design.
OK Lowered it down, cna still go down 2 more inches if necessary but I think this will be plenty safe.
Going to write up a quick DIY on it.