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Old Jul 01, 2012, 11:52 PM
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Cobra68's Avatar
United States, WA, Ravensdale
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Aros,

Where did you pick up #8? I'm getting ready to pull the trigger on buying #3, and wanted to make sure that I'm getting the best deal... the link that Don posted to BPHobbies seems to be the lowest price that I can find... were you able to find a kit anywhere else at a lower price?

-Sully
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Old Jul 02, 2012, 01:46 AM
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Maple Valley, WA
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This is the golden deal my friend...

http://www.bphobbies.com/view.asp?id...8&pid=D0626114
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Old Jul 04, 2012, 12:31 AM
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Cobra68's Avatar
United States, WA, Ravensdale
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This is the golden deal my friend...

http://www.bphobbies.com/view.asp?id...8&pid=D0626114
I emailed the guys at NP to see if they were ever going to get the Habu back in stock... they told me "Probably not... they were never really good sellers..."

So... I've got #3 on its way from the link that you (and Don) provided...

-Sully
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Old Jul 04, 2012, 02:48 AM
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Nice. Keep 'em flyin'!
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Old Jul 06, 2012, 03:07 AM
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Going out this weekend early to see if I can get up to flight #60! I am determined to get this airframe up and beyond 100!! And again this is on a light 3S set-up using Thunder Power 3S 2100 20C packs! 91 mph remains the limit of this set-up.
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Old Jul 06, 2012, 12:45 PM
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2100 packs? What are your flight times like?
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Old Jul 10, 2012, 11:20 AM
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I was able to get out in the heat and make another flight and had a friend film it. Pretty windy and about 100 deg. My take off was dicey as I did a bit of a cross wind take off ;-O Plane flew well and I throttled back and did my best to keep it in closer with tighter turns. Plane handles pretty nice, just really different, which is good. Real hard one to see for older eyes though. I chopped the throttle on landing approach to test sink rate which was space shuttle steep but not bad. I added some throttle right before flare. No stall with wing droop mod. and CG moved further back. I have to agree with bighead93 that the plane should be kept light. Not sure what kind of power bighead is getting but I'm at around 750-800 watts and fly at 4000ft. elevation. I think at sea level you would prob. be fine with 600 watts power, but some it hot. I'll try to remember to weigh mine as the electric retract conversion added several more ounces, also scratch built nose prob. hurt with extra weight. I'm using a Sky 4s 3300 30c with 3500kv motors pulling a bit over 50 amps right off the charger. I painted the underside wing outer panels and nose white which does help. My throws are the same as what Don posted. Right now I have little to none of up trim set on the elevators because of the cg being set much further back.

bighead,
Great job getting 60 flights on yours and good luck making it to 100.

Take care -- Stacker

Stacker SR71 Blackbird (2 min 29 sec)
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Old Jul 10, 2012, 12:50 PM
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Nice job stacker! Looks like it flew good and perfect landing there. Wow, with that density altitude I would have expected much worse flight performance, especially with that airframe.

Good job!
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Old Jul 10, 2012, 01:18 PM
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Aros,
Thanks, I'll check my CG and all up weight. I think I'm prob. around 42-44 ounces now and CG must be around 98-100mm but I'll check. I kept the flight short because of the heat but battery was only warm so 5min. flight should be possible with this setup. I could prob. drop down to a 3000 4s and save some weight.

Take care -- Stacker
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Old Jul 10, 2012, 02:55 PM
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Light is the key, no question. Keep her flyin'!

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Old Jul 10, 2012, 05:10 PM
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United States, WA, Ravensdale
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Light is the key, no question. Keep her flyin'!

FedEx is on their way to my house with #3 today...
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Old Jul 10, 2012, 06:29 PM
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Sweet! I just ordered #9 today. Don fixed my power system (a spare housing, one motor was fried, ESCs were okay and both the motors and ESCs were direct soldered) so it will be ready to go in #9.

I'm getting a 4S 4000 40C SkyLipo (unless I hear otherwise from the Habu Jury) and as cool as it is, the afterburnerz kit is going to go in some other - less testy - EDF.
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Old Jul 10, 2012, 06:51 PM
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United States, WA, Ravensdale
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Originally Posted by Aros View Post
Sweet! I just ordered #9 today. Don fixed my power system (a spare housing, one motor was fried, ESCs were okay and both the motors and ESCs were direct soldered) so it will be ready to go in #9.

I'm getting a 4S 4000 40C SkyLipo (unless I hear otherwise from the Habu Jury) and as cool as it is, the afterburnerz kit is going to go in some other - less testy - EDF.
I'm tempted to go the same route with the battery. That battery should be able to handle the load of the two 4000kV Wicked Plus motors with ease! I crammed two 4S 2200's in my last one, but it was a tight fit! Honestly, it was harder to run the Y-connector to both batteries and get it all to fit inside the battery bay... a problem that a single battery would likely fix. In the mean-time, I've been flying my 4S 2200's in my Phase3 F-16 and guess that I've been pushing them pretty hard... of the 4 batteries that I've got, 2 of them have one cell that's running down much faster than the other 3... so not something that I feel comfortable putting in a new Habu.

The Phase3 F-16 floats really well, and even if I hit LVC with those (bad) batteries, it's not a problem getting it back to the runway. I took the EagleTree pitot tube and airspeed indicator out of Habu #2, and put it in the F-16... so far, I've hit 105mph on 4S. I need to send an email to EagleTree and ask them about the calibration on the unit -- I expected to get a bit more out of the 4S setup, but I'm up in the high desert of SoCal and am flying at about 2,400'MSL... which right now, on a hot day gives me a density altitude of about 6,000'!

I'm also thinking about putting in a separate BEC that runs off of the main battery pack to power the receiver. I'm not sure if it's necessary though... but it might eliminate power problems to the receiver if I've got clean power that's not coming through one of the ESC's.

Anyone have thoughts about using a separate BEC???
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Old Jul 10, 2012, 07:15 PM
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Anyone have thoughts about using a separate BEC???
I always run a seperate BEC on anything above 3s voltage and always when running twins.
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Old Jul 10, 2012, 07:17 PM
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United States, WA, Ravensdale
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Originally Posted by Joe 1320 View Post
I always run a seperate BEC on anything above 3s voltage and always when running twins.
Thanks Joe... good to hear that I'm not marching down an unnecessary path to add weight more to the plane!
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