I would like to introduce to you the TB Models Ultra Viper
Wingspan is ~2100mm total Length of model is ~1950mm including elevators
Build thread is here on RCGroups.com - http://www.rcgroups.com/forums/showthread.php?t=2277688
Here is more info:
Maiden flight.... efflux measured at 160mph.... I was fairly surprised regarding speed... The first test was 73amps WOT ... so a fan with better efflux can give even more speed
More to come
Wingspan is ~2100mm total Length of model is ~1950mm including elevators
Build thread is here on RCGroups.com - http://www.rcgroups.com/forums/showthread.php?t=2277688
Here is more info:
There was going to be a contest on weight and amps.. too many questions regarding what is pushing plane...
It was a LC500 Leopard motor 460kv.... motor on 12s with CS 120mm 12 blade fan... TEMW 120 4s - 14s esc.. (same as yep but TEMW brand)
Wingspan: ~85" (2100mm)
Length: ~75" (1840mm)
Flying weight: ~16lbs - 12oz (7.59kg)
Watts at WOT - ~3200 watts (73 amps, 44 volts)
Flew it again this weekend, it really needs about 4000 watts min to keep that kind of performance throughout the flight...
~ 115 - 125mph with 3200 watts isn't bad..
In the video on the website Dave didn't catch the first vertical but it was beyond sun height...
Not unlimited but on ~3200 watts it was nice... decent performance for twice the watts of a Habu 32....
To me it's very similar drag profile of Habu or any sport jet edf.... just bigger... with very little watts the plane can go to a certain speed.. then.. needs 25 - 35% more watts to go another 15 - 20mph...
I didn't have the gear doors on so there could be around 5mph more on the 3200 watts but I like the speed
Dave still has the video of the flight on 14s but on that flight I had a popped cell near the end... wasn't pulling but 90 amps on the ground...
Still had decent vertical and speed... difference was more static thrust I was able to get up to speed faster in shorter distance.
Here's the Maiden flight video.... (not the one on the website)
I didn't add power after the first touch down... it just glided up in the air and I had to power out of it otherwise it would of just hung.... the rest was me panicking cause expo was too high
Maiden flight.... efflux measured at 160mph.... I was fairly surprised regarding speed... The first test was 73amps WOT ... so a fan with better efflux can give even more speed
More to come