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04-03-2013 10:07 PM  6 years ago
2tall

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Crystal Lake, Illinois, USA

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Amazing
Two more flights were logged today. Here is the setup:

Stretched Mongoose
230KV Airstar Motor
ICE HV 160 V2 ESC run in Governor "Fixed RPM" mode
12S power using 2 x 6S 5000mah 45c Thors
Naza-H w/GPS electronics.
830mm Vario scale mains (75mm cord)
115mm Edge blades on the tail
Head speed - 1050 rpm

Ten minutes flights are burning 56% of the available power, while the motor, batteries, and ESC are all at the ambient temperature - not even warm. Looks like 14 minute flights will still leave a 20% reserve in the packs.

The Naza-H is amazing. Switching between the three modes (Normal - ATT - GPS) is painless (no adverse reactions) and the results are impressive. GPS mode held the ship in a solid hover while enduring wind gusts to 20 mph. Flying around in ATT or GPS is a bit like driving a limo - switch back to Normal mode and you are driving a Beemer. Considering that we have not had a calm day to run the Naza "FBL electronic Trim Flight" these results are even more impressive.

My ship still has a mild case of the shakes. Blade tracking is a bit off, and I need to balance the mains. The low head speed is probably aggravating the issue as well, but I'll get her smoothed out.

Jon
"Pay attention...lest the ground rise up and smite thee."
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04-07-2013 10:37 PM  6 years ago
2tall

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Crystal Lake, Illinois, USA

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Complete Flybar Head Needs A new Home
Selling the original flybar head, complete, for less than half of the Airstar new price.

SOLD - Thanks
"Pay attention...lest the ground rise up and smite thee."
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05-14-2013 01:30 AM  6 years ago
2tall

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Crystal Lake, Illinois, USA

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A couple of in-flight pics ---
"Pay attention...lest the ground rise up and smite thee."
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05-19-2013 02:15 AM  6 years ago
cabojay

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Kenosha, Wis.. USA

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Very Cool
Nice looking ship! Can't wait to see it in person! Jim said you had some nice flights on it at St. Charles on friday. Will see it real soon..
AMA#939908
IRCHA#4219
LCRCC Vice President
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06-06-2013 02:24 AM  6 years ago
mecalloway

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Cerritos, CA USA

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Naza feedback setting
On the naza feedback setting, they have the leading edge in the feedback set up, you know that the mongoose is opposite rotation. which setting did you use? did you reverse it on the feed back?
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06-27-2013 01:42 AM  6 years ago
jprconstruction

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Nottingham,uk

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E-mongoose on 10s
Hi 
I have a mongoose and want to convert to electric, I have totalled up the parts I would need from airstar and the cost comes to about $800 by the time I pay shipping to the uk and Import taxes, which is for the motor,160hv esc, motor plate, custom gear, belt etc.
I don't really want to spend $800 to upgrade to electric as I already have two electric heli's, a mikado 600se ( on 10s) and an old thunder tiger 620e, (on 6s)  however I've seen the E-mongoose video on YouTube and it does look cool.
 I'm wondering if there is a way to do the  E-conversion on a budget using a 10s setup.
Example 
Use my 5 sets of 10s lipo's that I use for my mikado 600se
Use a CC120hv I have lying around that is brand new
Use a 10s compatible motor around 300kv that I have seen many on the web for sale at approx €70
Make my own motor plate out of stock aluminium.
If possible, use stock drive gears, belts, etc, but if there's no options just order the custom motor pinion and  belt from airstar.
This would save $800 on airstar parts and save me having to buy a few sets of 12s lipo's at approx another $300, totalling $1100.
If this was possible I could buy a motor around the $70 mark and keep the final cost with custom gear,belt etc to $200 all in.
I only do gentle sport flying and no inverted or 3D, so I wonder if anyone has the technical knowledge to help me work out if this is possible.
I suppose it's a case of  whats the fully loaded weight of the mongoose, required head speed, max available amps of the CC120HV, gear ratio's etc to give me what kv motor I would need for 10s use, but unfortunately I'm too dumb to work all that out.
I noticed a previous poster said a CC160HV was overkill and a CC120HV should doon 12s and this is what got me thinking.
I asked airstar if I could run their motor on 10s but they replied the motor is for 12s use only.
Does anyone out their have any ideas.
Regards
John

10s lipo - 2775 watts power - 230kv ? 

http://www.hobby king.com/hobby king/store/__17985__Turnigy_RotoMax_1_40_Brushless_Outrunner_Motor.html

Another 10s motor http://www.hobby king.com/hobby king/store/__18175__Turnigy_Aerodrive_SK3_5055_280kv_Brushless_Outrunner_Motor.html

http://www.hobby king.com/hobby king/store/__18174__Turnigy_Aerodrive_SK3_5055_320kv_Brushless_Outrunner_Motor.html

http://www.hobby king.com/hobby king/store/__18128__Turnigy_Aerodrive_SK3_6364_245kv_Brushless_Outrunner_Motor.html

http://www.hobby king.com/hobby king/store/__18126__Turnigy_Aerodrive_SK3_5065_236kv_Brushless_Outrunner_Motor.html

http://www.hobby king.com/hobby king/store/__18127__Turnigy_Aerodrive_SK3_6354_260kv_Brushless_Outrunner_Motor.html

Plus many others
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06-27-2013 01:57 AM  6 years ago
BeltFedBrowning

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Kansas City

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Can you get the Vario bits to convert it easier?
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06-27-2013 01:05 PM  6 years ago
jprconstruction

rrApprentice

Nottingham,uk

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More info
[quote] Can you get the Vario bits to convert it easier?

I know the head is vario, but please give me more info.
Regards john
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06-27-2013 10:36 PM  6 years ago
Airstar Intl

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Moorpark, CA

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John,

If you have anymore questions please let me know I have sent you the shipping totals and am awaiting your response.

Thanks,
Shane
Airstar International
805-553-9996 ext 1001
shaneb@airstarintl.com
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06-28-2013 08:38 AM  6 years ago
jprconstruction

rrApprentice

Nottingham,uk

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E-mongoose on a budget
Ok, so I've ordered a $74 heli motor online  and the numbers/spec are the same as the airstar motor except that the $74 motor is 260kv and 2700 watt, the motor length is 72mm long and slightly wider, so the motor will be slightly bigger than the airstar motor by a few mm.
Re-engineering and using the standard clutch bell of 22 teeth will give me a gear ratio of 9.09,  so 260kv x 37v (10s) = 9620 rpm, divide that by 9.09 gives me a head speed of 1058.
I am thinking of making the motor mount out of stock aluminium with a tensioner pulley as per this e-conversion to overcome any slack belt problems,
http://rc.runryder.com/rr/rrpv.htm?ID=587339&PG=2&IN=2
 I've managed to source a supply of very good quality belts of all sizes from a local army surplus store, I think the belts come from complex military vehicle electric motors,the motors they have there look like they cost thousands(very well made) so I think the quality of the belts will be top notch.

This is going to be a bit of an experiment and I'll be taking it one small step at a time.
Once I'm ready,  I will do plenty of on the ground testing for esc temps/motor temps, and data logging etc.
if all goes well I've saved a shed load of money as per my previous post and if not I'll end up with a spare motor, and had a bit of fun in the meantime.
All my testing will be done hovering  6 inches off the ground for safety, so hopefully no bent heli.
If money was no object I would of just bought the 12s Airstar setup and a few sets of 12s lipo's at $1200- $1500.
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07-03-2013 11:45 PM  6 years ago
Scorpion

rrApprentice

Socal USA

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e-motor
where did you get your motor from
thx
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07-06-2013 12:13 AM  6 years ago
jprconstruction

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Nottingham,uk

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Got the motor and it's huge :-/
http://www.hobby king.com/hobby king/store/uh_viewitem.asp?idproduct=18128
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07-12-2013 08:22 AM  6 years ago
Scorpion

rrApprentice

Socal USA

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hobby king e-motor
hello jprconstruction, what is hobby king's motor part number

do you have any videos?

thx
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07-12-2013 08:25 AM  6 years ago
Scorpion

rrApprentice

Socal USA

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any videos?????
Hello 2tall, do have any videos
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07-12-2013 03:33 PM  6 years ago
2tall

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Crystal Lake, Illinois, USA

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Sorry, not yet. I have been grounded for more than a month. Two Pit Bulls broke in to our yard and mauled one of our Wire Fox Terrier pups. Sam, 8 months old, is recovering but requires almost constant watch. Dealing with the authorities and the Pit Bull owners has been one disappointment after another. I should be able to pull pitch again in a couple weeks.

J
"Pay attention...lest the ground rise up and smite thee."
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