View Full Version : 5s Combo
buster1
06-23-2006, 11:40 AM
Does anyone have 5S flight data,
What pinion, batteries with Hyperion motor - I am seriously considering going with 5S,
better to make the leap now, then upgrade like we all did with the Trex.
4S power looks good, but flight times on the edge at 6 minutes - it would be good to have the extra power and flight time.
Any insight would be helpful, as I my lepton is almost done and about to purchase batteries,
Thanks,
Jeff
Gscott
06-23-2006, 12:07 PM
Until someone comes up with pinions nothing over 4s will be possible.
readyheli
06-23-2006, 12:57 PM
5s is still possible on the stock pinion.
In theory one could run a 5S (18.5v) pack on the stock 26 tooth pinion, with a 94 tooth main gear (stock) using a 14 turn motor (574Kv) and achieve HS ~ 2,857.
For what its worth.
rchover
06-24-2006, 03:20 PM
5s should ROC we will be trying 5s with medusa motors soon
WillJames
06-24-2006, 07:11 PM
This heli in general is gonna ROCK. Can't wait to try somebody's machine, OPM Baby!!
eheliflyer
06-24-2006, 07:49 PM
Jeremy which Medusa are you going to try out? I am patiently waiting your results because I love my Medusa on my G4 Rex and I can't even imagine how a Medusa would be on the Lepton. :smokin:
rchover
06-24-2006, 09:03 PM
I have 28-56-900kv, 1400kv 1900kv motors ...I also have a good range of pinions to test with 26-12t with 1/8 inch bore,
I need to see if we can physically get this motor with a smaller pinion close enough to the main gear w/o modifying the motor mount , this will determine how small of a pinion we can run in a lepton ..base on that we will see what will be the optimum medusa kv/pinion/voltage for the lepton ...we shall see...i don't know if this is going to be more or less powerful than the out runners ...but we'll give it a try
WillJames
06-24-2006, 10:42 PM
Cool that you guys are already testing motors and stuff. Can't wait to see the results!! :smokin:
BigVanVader
06-25-2006, 08:26 AM
Im with you Will,OPM baby!!!!!!!!!!!....Now someone break out a heli! :mrgreen:
Gscott
06-25-2006, 09:23 AM
Jeremy,
Do you have the pinions available for sale? I want to try a 6s setup but cannot find the correct pinion.
Finless
06-25-2006, 10:48 AM
Just saw a Lepton fly on 4S... WHAT A ROCKET! I dont see the need for 5S???
Also the TAIL is a problem even with a 3000 head speed. It's isnt holding due (we believe) to the small blades.
Bob
buster1
06-25-2006, 10:56 AM
Bob, that is good to hear - would rather not have to spend 5S prices,
What kind of flight times were you seeing? Were you still breaking in batteries or did you have some batteries you could fly to limit - Is 6 minutes achievable flying 3D with the 4S setup?
Regarding the tail-rotor blades - per the guy from Italy (Corrodo) - he put on longer tail blades and it fixed the problem per your comments.
Thanks for the info.,
Jeff
Gscott
06-25-2006, 12:46 PM
I saw the Lepton fly on 4s at the Hirobo Cup. It had plenty of power. My only desire for 6s was to utilize my existing T-Rex packs.
For the tail blades, the 4s Lepton at the Cup was using Viper 70 tail blades. Apparently the Align carbon fiber T-Rex blades are larger and work well.
eheliflyer
06-25-2006, 04:42 PM
I can't wait to see the results of the different motors. :mrgreen:
buster1
06-25-2006, 05:27 PM
Gscott - what duration flight times did you see with the Lepton at the Hirobo cup?
Thanks,
Jeff
Gscott
06-25-2006, 06:44 PM
I didn't see the entire flight of any of them (1 crashed pretty hard) but I would guess 7-10 minutes.
rchover
06-25-2006, 08:44 PM
gscott,
I don't have pinions yet for sale the ones I got are not the 5mm bore , they are 1/8"bore to fit the medusa
Finless
06-26-2006, 09:46 AM
Bob, that is good to hear - would rather not have to spend 5S prices,
What kind of flight times were you seeing? Were you still breaking in batteries or did you have some batteries you could fly to limit - Is 6 minutes achievable flying 3D with the 4S setup?
Regarding the tail-rotor blades - per the guy from Italy (Corrodo) - he put on longer tail blades and it fixed the problem per your comments.
Thanks for the info.,
Jeff
He was still breaking in batts and such so we did not get to see full flight duration but WHAT a power house 4S was! WE settle in on a head speed of 3000 for kick butt performance. 2600 just seemed too low and on punch put there was some bogging but nothing bad. Also I didnt set up his heli so no idea how much pitch he had. I will know more myself next weekend.
Bob
buster1
06-26-2006, 10:43 AM
Bob, I hear there is a headspeed limit of 2650 or 2800 for this rotorhead (suggested) - not sure, so if we rev. it up to 3000 we may be over the recommended number for this rotor head. Not sure if my info. is accurate, but heard this second hand,
Jeff
Finless
06-26-2006, 11:50 AM
Yes I heard that as well but when it was cranked up to 3000 it sounded better. I was not at the sticks so I cannot confirm but several of us thought 2600 was too slow from the sound and climb out power.
I will set mine up for 2600 to start and go from there.
Remember the Trex was rated at 2400 and have a warning on the blade package yet most of us are runing over 3000..... Not that I am saying it is OK to do so on the Lepton but only testing will tell. I DO NOT reccomend running that speed either just letting everyone know what we noticed in a couple test flights.
Bob
buster1
06-26-2006, 07:24 PM
Bob, regarding the helicopter you saw this past weekend with 4S - were you running a gov. mode - or something like 80% across the board for 2600HS and 100% for 3000HS,
Whats your opinion regarding flight time - If I can get the head speeds you mentioned and at least 6 minutes of flight time - then I am sold on 4S and the Hyperion.
Guess its too early to tell if we have chosen a decent setup that will be suitable for a while.
The idea is to have similar power to weight ratio of a 90 nitro, 6 minutes of strong 3D and not burn up the batteries. This is the same type of criteria that Larson is going for the the MA50 electric.
Jeff
Finless
06-26-2006, 09:36 PM
Guess its too early to tell if we have chosen a decent setup that will be suitable for a while.
Yes that is the case in my opinion. I THINK I have a "performance" setup but I just cant say for sure right now.
If you building one and have not bought the power setup yet you might want to wait to see what people find (and I find) is a kick butt setup. If you cant wait then right now the 4S Hacker or Hyperion seems to be the choice right now based on the "math", Jeff Green's tests, and Hirobo pilots tests...
Thats all I know right now UNTIL I can actually fly it AND have one of my locals "hot" pilots fly it since I cant fly worth a darn anyway ;)
Bob
TStone
06-27-2006, 04:42 AM
Hello,
the Lepton seems to be near the class of the Acrobat SE (Stefan Plöchinger/Germany). The Lepton is a tad heavier, but i think one can get an impression of the power/runtime for 4s and 5s configs from this videos: http://www.eheli-tuning.de/videos.html
Tom
Laurens
06-27-2006, 10:20 AM
The Acrobat is bigger and designed better IMHO.
mudbogger2
07-04-2006, 07:43 PM
After the impressive flights on my 4S setup at 2800 rpm headspeed. I am going to try a 5S setup.
Hyperion 3025-12 motor with the 24 tooth pinion
5S1P 3700 Evo packs
Jazz 55-10-32 so I can dial down the throttle % if needed. (this esc does very well at low % levels)
I think this will be a pretty hot setup.