HK BAE Hawk 90mm EDF Composite 1140mm - Page 144 - RC Groups
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Jan 14, 2013, 04:54 PM
Registered User
1Eye's Avatar
Hi all, i'm finally back on the build of this hawk, just something i came across while working on the wing. I purchased the retracts from HK that are specific for this model, however one of them does not lock in the down position, if i push on it the cam on the trunnion slides over the threaded actuator. i discovered that one of the micro switches is broken and allowing the actuator to travel too far, i have now put two tiny packers which stop it in the correct position but i don't know if this will cause damage long term or high battery drain or can the overrun electronics deal with this? if the electronics geeks amongst you all answer that question for me i would be much obliged?
I have put up a couple of pics and i have a small vid but can someone tell me how to upload it??

Good to see so many of these have been built and flown, looking forward to finishing mine now!
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Jan 14, 2013, 06:41 PM
Chillaxin dude!
BulletMaster's Avatar
Maidened mine the other weekend... first flight was great until the landing.... there were quite strong cross-strip gusts... just as the rear wheels touched a gust came through and picked up the left wing tip quite suddenly and the Hawk proceeded to cartwheel..

Not sure if I will fix it yet.. Very bummed.
Jan 14, 2013, 09:18 PM
Vertical Unlimited
Straight Up's Avatar

Wing reinforcement?


I'm just in the process of finishing my Hawk. One item that concerned me was the lack of reinforcement at the center wing joint. In my IC days we always wrapped the wing panels joint in fiberglass cloth, but this bird seems to rely on a timber joint (?). I don't know what dihedral braces lie inside the wing, out of site, as it is delivered as a finished one-piece. Anyone experienced any wing failures? Does it need reinforcing? Sorry if this has been covered - it's a long thread, and I've followed it sporadically.
Jan 15, 2013, 10:57 AM
Registered User
phily32's Avatar
Yes i fibreglassed under the belly pan, i did this after pull out of a high speed pass and hearing a loud crack Luckly i landed quickly and found that i had a lot more dihedral than when i took off
Jan 16, 2013, 07:23 AM
Hi, I am Michael from Taipei
Hey guys, I install EPF 6S/1900kv EDF in my CMP T-45. The sound is great.....


2013 0116 CMP T 45 with EPF 1900kv EDF (2 min 50 sec)
Jan 16, 2013, 08:09 AM
Registered User
guyst's Avatar
Quote:
Originally Posted by mw46mw46
Hey guys, I install EPF 6S/1900kv EDF in my CMP T-45. The sound is great.....


http://youtu.be/cY_m-_z32So
Nice flying!
So you changed from the "Alloy DPS Series 90mm EDF unit with 1900kv Motor" to the "EPF MERCURY 90mm 6S(1900KV)"?
Is there a difference?
Jan 16, 2013, 12:00 PM
Hi, I am Michael from Taipei
Quote:
Originally Posted by guyst
Nice flying!
So you changed from the "Alloy DPS Series 90mm EDF unit with 1900kv Motor" to the "EPF MERCURY 90mm 6S(1900KV)"?
Is there a difference?
They have almost same weight. It's easy to replace the RCLander 6S/1900kv EDF with EPF 6S/1900kv one.
Jan 16, 2013, 12:49 PM
Registered User
guyst's Avatar
Quote:
Originally Posted by mw46mw46
They have almost same weight. It's easy to replace the RCLander 6S/1900kv EDF with EPF 6S/1900kv one.
Is there a difrerence in trust?
Jan 16, 2013, 08:42 PM
Hi, I am Michael from Taipei
Quote:
Originally Posted by guyst
Is there a difrerence in trust?
Yes. The efficiency of 12 blades EDF commonly is lower than the 6 blade. I will say maybe 0.3+ kg difference at same current. But, I think it's worth to trade for the "jet sound" when speed can't excit me more.
Jan 28, 2013, 07:15 AM
In the pipe 5 by 5...
urrl's Avatar
Quote:
Originally Posted by mw46mw46
Hey guys, I install EPF 6S/1900kv EDF in my CMP T-45. The sound is great.....


http://youtu.be/cY_m-_z32So
Nice sound and great landing. I notice my L-59 parked as the Hawk pulls in.
Jan 28, 2013, 01:50 PM
Registered User
nerv's Avatar
Quote:
Originally Posted by urrl
Nice sound and great landing. I notice my L-59 parked as the Hawk pulls in.
mw46
Very nice fleet of jets!
Urrl, your L-59 is parked on the other side of the earth. lol
Jan 28, 2013, 11:57 PM
Hi, I am Michael from Taipei
Quote:
Originally Posted by nerv
mw46
Very nice fleet of jets!
Urrl, your L-59 is parked on the other side of the earth. lol
Nerv & Urrl,

Welcome to park yours here...
Feb 06, 2013, 06:06 PM
Registered User
hi all. Just a quick one im struggling with. I have got the h/k 12 blade fan unit with het 700-60-1738 motor. The instructions of the motor states a max 8s lipo should be used. I tried x2 4s 4000mah nanos from h/k, and am using the h/k dlux 120a esc. The motor runs and seems to get to max at 3/4 throttle. It then maks a boom noise and cuts. I thought this would be too much battery power so purchased x2 3s 4000mah nano lipos in hope the motor would run to full throttle. Now I get a 2 second start up and the motor stops dead. I throttle back then it goes again for 2 seconds then stops again. Do i need a new motor or a different battery setup?
any ideas where im going wrong. Oh I also have the h.k dlux programming box which I can't get to work either!!
Feb 06, 2013, 06:30 PM
3DHOG
jcdfrd's Avatar
Quote:
Originally Posted by bluetomcat74
hi all. Just a quick one im struggling with. I have got the h/k 12 blade fan unit with het 700-60-1738 motor. The instructions of the motor states a max 8s lipo should be used. I tried x2 4s 4000mah nanos from h/k, and am using the h/k dlux 120a esc. The motor runs and seems to get to max at 3/4 throttle. It then maks a boom noise and cuts. I thought this would be too much battery power so purchased x2 3s 4000mah nano lipos in hope the motor would run to full throttle. Now I get a 2 second start up and the motor stops dead. I throttle back then it goes again for 2 seconds then stops again. Do i need a new motor or a different battery setup?
any ideas where im going wrong. Oh I also have the h.k dlux programming box which I can't get to work either!!
see if it will run on a single 4s pack, you may have damaged your esc running it on 8s as it would pull more than 140amps with that motor
Feb 07, 2013, 10:19 AM
Registered User
Quote:
Originally Posted by bluetomcat74
hi all. Just a quick one im struggling with. I have got the h/k 12 blade fan unit with het 700-60-1738 motor. The instructions of the motor states a max 8s lipo should be used. I tried x2 4s 4000mah nanos from h/k, and am using the h/k dlux 120a esc. The motor runs and seems to get to max at 3/4 throttle. It then maks a boom noise and cuts. I thought this would be too much battery power so purchased x2 3s 4000mah nano lipos in hope the motor would run to full throttle. Now I get a 2 second start up and the motor stops dead. I throttle back then it goes again for 2 seconds then stops again. Do i need a new motor or a different battery setup?
any ideas where im going wrong. Oh I also have the h.k dlux programming box which I can't get to work either!!

I might sound like the evil guy here but the truth is u need a whole new power setup.
With that fan unit even a 6s setup is too much. The esc is crap no question about it. I had it and burned on the second run. There are many other several occassions that that happened.
If you want to use that fan and you are absolutely sure its one from the good batch that do not explode then get ur self a good 1400kv motor if you are going 8s or. 1500-1600kv if you are stickinf with 6s
Now if you want to go 8s I would recommend the castle ice 100 and if you are going 6s the k-force 100 which bursts up to 150 is a very very good and cheap solution
Btw you cqn sell your motor and get the new 1500kv motor from hk for half the money
Nowww if you dont mind changing the fan. Keep your motor which is qctuallya great motor and get the Het 9305 fan unit for 45usd. And have something that will last for a lifetime. An you will be able to combine your batteries and fly 7 or 8s depending on your mood. If you want longer flying times go and if you want speed go 8s.
My 2c


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