RunRyder - Any1 Tried this motor in their Lepton?

rrTV-PHOTO

New HD TV

HOME rrTV-PHOTO GALLERIES MY GALLERY HELP-FAQ

myHOME PM pmRR MEMBERS 756 ONLINE 28 EVENTS SEARCH REGISTER START HERE

3 pages [ << < ( 1 ) 2 3 NEXT >> ]

2362 views

POST REPLY

Model Rectifier Corp	.	RCHover	.	RC-Direct
	.		.

e-Hirobo SRB Quark - Lepton - XRB Coaxial > Any1 Tried this motor in their Lepton?

Cybinary
Senior Heliman
Location: The Colony, TX

I am currently running a Hyperion H-3025-8 on 3S, but I am planning on moving up to 5S for more power in the near future and the motor I currently have won't support 5S. I looked at the 3025-10 but it doesn't support 5S either. I found this one but have never heard of the name before.
http://www.helidirect.com/product_i...roducts_id=6027

I am also looking at the Hacker A30-12XL and maybe the Kora 12-14. I like the power of the Kora but would like something with a fan.

Any suggestions?

"Gravity is a Harsh Mistress!"
Lepton EX Fully BLINGed

01-15-2008 03:30 PM

Tmblewd
Veteran
Location: Phoenix, AZ

I don't know anything about the one that was in the link you posted, but have you tried going here to see what they have?

www.allerc.com

I've had great service with these guys

01-15-2008 03:39 PM

Cybinary
Senior Heliman
Location: The Colony, TX

Yea, Ive looked at AlleRC. They are my primary Hyperion source and they are looking into a H-3025 12 Turn for me since I would LOVE to continue running a Hyperion motor. The 3025-8 I have now runs cool and quiet, I love it!

01-15-2008 03:45 PM

Tmblewd
Veteran
Location: Phoenix, AZ

OK, what are you using for a ESC? Hyperion or something else? I use Hyperion motors and ESC's on my Lepton and TRex. I like them, they work great. I just haven't tried anything else out or had a need to.

01-15-2008 03:51 PM

Cybinary
Senior Heliman
Location: The Colony, TX

Got a CC 60 ESC and a H-3025-8 turn motor with a 26T currently on duel 3s 2200Mah packs. Running around 2500-2600 HS

Looking for a good 5S setup with same ESC but new motor.

"Gravity is a Harsh Mistress!"
Lepton EX Fully BLINGed

01-15-2008 04:43 PM

Andi G
Veteran
Location: Switzerland

The Kora has a fan (the bottom of the Motor, the red part).

01-20-2008 06:07 PM

husafreak
Senior Heliman
Location: NorCal

Check the weights too, I just took a Kora 15-14 out and put the 1130 KV AXI in, the AXI w/fan weighs an once more! It also makes a loud whine, but the power is good for 4s.

01-20-2008 06:36 PM

Tail_BoomStrike
Veteran
Location: Virginia Beach

husafreak

What do you think of the 2826/8? Oh, yeah, it does produce a high pitch whine, somewhat giving it a hint of a turbine engine. I actually like it.....

So far, for me, that was the most powerful combination I've tried. Even better than my 6S set up. I'm about to try yet another AXi motor, already on the way. It have less power than the 2826, but this is a different configuration. I'm going to use shorter blade this time, 400mm, instead of stretching the tail. Target HS should be in the 2700-3000rpm range. If I could get good tail authority at 2700rpm HS, I will keep the HS at that range. I have set up a different brand 500 size machine before, with 400mm blades, and only 2400rpm, it got very powerful punch outs, owing to its light weightedness.

If all goes well, this will be a 3S set up, and also lighter, so it will open another option for those who want step up from 450 to 500 size machine, but there's still a good chance that this will be another 4S. I should be able to do a test flight next weekend, weather permitting. And probably post a video, if I could have somebody to shoot it for me......

01-21-2008 01:15 AM

Jafa
Elite Veteran
Location: Sydney, Australia

The tonic motor in your link is very heavy at 210 grams
The Hyperion weights 180 grams
The Kora weights 150 grams
That's an important factor

The Kora 15-14 would work well on 5S

The Axi2826/8 is specified for 3S Lipo
It does make a hell of a noice
I got 2850 out of it on 4S
It does have a little more punch than the Kora
(at the cost of current consumption so shorter flights if you fly hard)
It comes home very hot ~65 degrees C

The Kora is never more than luke warm

If you use a Kora motor and a S9257 tail servo you can save ~100 grams
It's important with small electric heli's

Lepton | TRex600Nitro | Sceadu | Freya | Avant | Predator Carbon Max

01-21-2008 02:51 AM

Tail_BoomStrike
Veteran
Location: Virginia Beach

Jafa,,, How much flight time are you getting?.... And yeah, it is 3S motor but 4-5S for heli.... I wonder why yours was that hot though.... But still within acceptable temp, not over 160*F(71*C)..... Mine was around 115-140's *F..... Did you install the fan? With this motor also the tail never kicked on me......

01-21-2008 04:01 AM

husafreak
Senior Heliman
Location: NorCal

I like the AXI. I put some Align Trex 500 blades on, they are a little bigger than the MAH blades. I got approx 2700 rpm with 18t pinion. That's a flat line 100% on my CC80 esc. I ran my 3 4s 3700 packs thru it. I could bog it down with 11 degrees pitch but still didn't lose the tail (readyheli 68mm blades) with 10 deg pitch the heli wasn't as quick but it hardly bogged at all. Somewhere between should be perfect but I want to try the 19t pinion and MAH blades also. Neither were like my old setup though were you could get a 'deep' bog, lose the tail, and take several seconds to come back on speed. This was much better and a lot of fun! Now that I have a Trex 600n with YS and Hatori and 30% I can't help but compare everything to that. While my Lepton is not there it is perfectly acceptable now, so thanks for your help in choosing a decent powerplant for 4s.
At first I thought the whine was caused by the fan but it is the motor, it sounds pretty wild. My temps and run times with the 18t pin were right in the ballpark, 120 deg on the packs after 5 1/2 min. One pack started dying just as I came in to land so I will probly set my timer to 5 min. Now all my electrics are getting 5 minutes... (also have Mini Titan and Trex 600e with Neu) The motor was about 120 inside except for the run without the fan which gave a high temp of 135. Sorry I didn't see the charge into batts cause I was driving while I charged them. I bought some Century Swift tail blades to try and we should try the Trex 500 tail blades too. The Swift blades look about 20% bigger than the Readyheli ones. No sweat now that I have the Gaui 550 skids on

01-21-2008 05:41 AM

Jafa
Elite Veteran
Location: Sydney, Australia

My tail never kicked with the Kora either

Yeah, I have the fan on the motor
I'm running a 19T pinion with 2850 rpm
Jazz in governor mode at full power - wide open
She did not bog with 11 degrees of pitch

With the Kora 15-12 on 21T I was getting 5:45 3D flights
and chewing 2,800 ma out of the battery
With the Axi and a 19T doing a 5:45 flight
I chewed 3,100 ma out of the battery

It's a 4S 3700mah FP Evo 25C battery

Maybe it's the pinion that made the Axi work too hard
But if I drop to a 18T and 2700 on the head
then the better solution is
the Kora 15-12 on 21T and 2790 on the head

Lepton | TRex600Nitro | Sceadu | Freya | Avant | Predator Carbon Max

01-21-2008 05:48 AM

Tail_BoomStrike
Veteran
Location: Virginia Beach

Thanks for the details..... I never get to gather as much detail on mine back then...... Due to mechanical failure..... That kinda piss me off, and gave up on the Lepton..... That was last summer.....

Three of my friends at the field are getting T500, and I want to make comparisons, that made me decide to rebuild my Lepton again.....

The one thing I notice about the AXi was, it doesn't like being spun too high rpm, but rather being loaded..... Odd but this motor is more efficient that way..... So, my thought is that if being ran in gov mode, 20T pinion is the ticket......

I even have 2217/5 on my 450 with 16T pinion. It produce more power than 430xl and medusa motor with less current draw. Barely hitting 32A at extreme loading. AXi's best attribute is it's tourqe at lesser rpm.

01-21-2008 11:44 AM

Cybinary
Senior Heliman
Location: The Colony, TX

I am on the fence about the Kora, I love how everyone is having great sucess with it. If Hyperion comes out with something I can use on 5S I will use them since I have had great personal success with my 3025-8 and its really quiet and very efficent.

But Im not going to upgrade my motor until I get my new charger (CellPro 10S) and 5s packs

"Gravity is a Harsh Mistress!"
Lepton EX Fully BLINGed

01-22-2008 07:26 PM

Jafa
Elite Veteran
Location: Sydney, Australia

The Kora is 30 grams lighter - which is important
The Kora works well and runs cool
The Kora 15-14 will work well on 5S

The Kora's provide very peppy performance - but not balls to the wall crazy power

Lepton | TRex600Nitro | Sceadu | Freya | Avant | Predator Carbon Max

01-22-2008 09:54 PM

Cybinary
Senior Heliman
Location: The Colony, TX

How loud is it Jafa? Compared to other motors? Hacker? Hyperion? Align 500L (IE: The Screamer!) LOL

"Gravity is a Harsh Mistress!"
Lepton EX Fully BLINGed

01-23-2008 03:10 AM

Jafa
Elite Veteran
Location: Sydney, Australia

01-23-2008 03:33 AM

Tail_BoomStrike
Veteran
Location: Virginia Beach

Husafreak

Any result on 19T yet?

I realy want you to try the 20T in gov mode, 2700-3000rpm, with high timing on the ESC. Be modest on the collective pitch +/-9*(10), (the stock main gear is too small to leverage the main blades and to handle the torque of this motor). I bet with this 20T pinion it'll be more efficient.... Current draw on light loading will be slightly higher than with smaller pinion, not very much, very little infact, but on high loading I was actually surprised it draws lesser, compared to smaller pinion (remember, this is in governor mode. The ESC is governing the HS, so ESC would only increase volatge when rpm below target, and lower the voltage when rpm go over target), and falls right within the maximum efficiency current rating of the motor....

I did try 19T. I remember now. Gov mode also. The motor was hotter than with 20T.... I remember a certain article in a rc magazine, where where the columnist was testing and comparing 3 diff bl motors, where each motor exhibit their best power at certain rpm and current draw range, and when exceeded draws more current without significant increase in power.

01-24-2008 05:43 AM

Jafa
Elite Veteran
Location: Sydney, Australia

Yeah, every motor has a sweet spot,
I just wish the manufacturer would detail what it is!

I ran the Axi with a 19T pinion
Jazz ESC in governor mode at full power
I got just over 2850 on the head which is good

She climbed well - but only a little better than the Kora
There is really not too much in it
The main difference is that the Axi does not sag as much

The Axi drew 3,200 out of my 3,700 pack - which is too much
I normally draw 2,800 doing a 5:14 flight

The noise and heat (65~68 degrees C) were enough to put me off

Given the noise, heat and power usage,
all for a small performance improvement
I removed the motor

The Lepton is much more fun when you run 11 degrees pitch
No risk of stripping the main gear (as long as the mesh is set correctly)

Lepton | TRex600Nitro | Sceadu | Freya | Avant | Predator Carbon Max

01-24-2008 06:01 AM

Tail_BoomStrike
Veteran
Location: Virginia Beach

I'm already used to flying 4-5min anyways with my 450. So I don't realy sweat it. I mostly fly 3D now and not much of a scale flyer anymore. Consistent power within 4-5min flight is what I prefer better than longer flight. Besides, pretty much after 4min you find yourself repeating the same trick, so might as well take a rest.....

I don't realy understand the fascination for 11* pitch since 10* is plenty enough for this bird when over 2700rpm. Most 3D maneuver , I noticed, doesn't realy require excessive collective input, but rather good collective management.

Although the problem might be lying in this set up.

Quote
I ran the Axi with a 19T pinion Jazz ESC in governor mode at full power I got just over 2850 on the head which is good

Your maxing the power out of your ESC, to get over 2800. When you could get the same or higher rpm with 20T for less power.... You've exceeded the maximum efficiency zone of the motor.... You're burning too much with less power gain, pretty much reving up an engine beyond the power band, instead of shifting to higher gear..... This motor BTW was intended for bigger machine, only sport flying. But we're doing 3D on a Lepton...

Anyways I heard a rumor, that HDX is going to release a version of HDX 500 with increased size main gear and tail drive pulley. I hope it'll be compatible to Lepton..... Not much bigger, but , bigger nonetheless...... Think about this..... Better tail authority even at lesser HS.....

01-24-2008 06:41 AM

3 pages [ << < ( 1 ) 2 3 NEXT >> ]

2362 views

POST REPLY

HeliDirect	.	3D Heli Depot	.	JR-Spektrum
	.		.

e-Hirobo SRB Quark - Lepton - XRB Coaxial > Any1 Tried this motor in their Lepton?

UPDATE SCREEN PRINT TOPIC

Advertisers

Subscribe to This Topic