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Old Nov 04, 2007, 01:49 PM
It's like an addiction!
Downwind3Zero's Avatar
NY, Rochester
Joined Oct 2003
1,450 Posts
Discussion
5" /127mm HC/UH Haoye Fan - This might be the Ticket...

Always did like the AMD Hawk. Its layed out for large Turbax fans so either it's a 120mm fan with lots of mods to the inlet ducting etc or something new. Along comes the HC/UH 5" /127mm Haoye fan! With its heavily pitched blades and size very similar to Turbax fans, however, no great motor to fit it. Several tests have been reported in other threads and forums, all without great success - mainly because the motor shroud is 49mm in diam so you're limited in choice. In addition, due to the pitch of the blades it won't be possible to run this fan with the usual 30-50'000 rpm.
I found the Hacker A50 14s to be 48mm in diameter and have a max rpm of 22'000 at 55 amps and 550 kV. With 10S that would deliver the target rpm of about 20'000.
I went ahead and got the fan (30$, yeah I know, its unbelieveable) and the Hacker motor (169$, I can live with that) and the HC/UH OEMRC 100 Amp/12s ESC (100$). So roughly 300$ for the total-which would be kinda' nice!
Needless to say it didn't turn out all too easy yet successful! I'll try to elucidate the process and the simple modifications in this thread.

For those who can't wait and want the facts right here and now :
10S, 2000W, 55Amps, 17'500 rpm static*


Regards, Chris G

*Measurements by RoverTomcat (will measure virtually anything as long as he can use a fancy gadget in the process )
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Last edited by Downwind3Zero; Nov 18, 2007 at 12:45 AM. Reason: Added graph
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Old Nov 04, 2007, 02:51 PM
Registered User
Dubai
Joined Jan 2007
5 Posts
toast my ESC

Hi,

I got the same stuff from UH, bought the Fan, KB45-08L motor(2300kV) and the Hextronik ESC 120A. The price is quite good so I jumped in.

I bench test the motor and used a 5s 18.5v lipo(50C) max discharged 130A.
At full throttle the ESC started smoking and the electric burning smell just came out. I knew My ESC is trashed.

What could have caused it? The ESC says it can accept until 6S lipo.
I hope you can enlighten me with this.

Thanks!
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Old Nov 04, 2007, 03:22 PM
It's like an addiction!
Downwind3Zero's Avatar
NY, Rochester
Joined Oct 2003
1,450 Posts
Too much load. 42'000 rpm with those blades is not going to work. What do you mean by "max discharged 130A"?
Chris G
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Old Nov 04, 2007, 03:32 PM
It's like an addiction!
Downwind3Zero's Avatar
NY, Rochester
Joined Oct 2003
1,450 Posts
Housing

The A50 14S is 48mm and the motor housing 49mm. Not enough to fit the motor. Dremeled out the housing by about 1mm so the aft step is flush. This way the motor will fit if the wires are inserted first. Also had to dremel out a notch in the front of the housing to accomodate the wires. Once inserted the motor has about a 1mm spacing to the housing.
I must say that the quality of the fan is excellent, its very sturdy and dremeling did not sacrfice any stability at all. The quality of the plastic/glass is pretty good compared to smaller cheap fans!!
The resulting snug fit is not a problem for the Hacker as it has 2 ventilating fans built in!

Chris G
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Old Nov 04, 2007, 10:50 PM
Registered User
Dubai
Joined Jan 2007
5 Posts
motor problem

Hi,

The 130A max discharged is a note labelled on the Lipo, Im very new to electrics,so im still pulling myself in.
What do you recommend for the motor?
If I cannot use this 2300kv motor on My AMD hawk, what application could I use it?

Many thanks!
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Old Nov 05, 2007, 12:08 AM
It's like an addiction!
Downwind3Zero's Avatar
NY, Rochester
Joined Oct 2003
1,450 Posts
Backplate

The backplate of the Haoye fan is probably the weakest component, it's soft and after attaching the Hacker it was obvious this wouldn't hold up. I cut a new backplate out of Epoxy board, used the Hacker backplate as a template for the mounting- and venting holes and lined it up. Next the motor was attached to the new backplate, inserted and motor spacing checked. A small notch in the new backplate is needed for the wires again.

Regards, Chris G
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Old Nov 05, 2007, 01:01 AM
It's like an addiction!
Downwind3Zero's Avatar
NY, Rochester
Joined Oct 2003
1,450 Posts
Mounting the backplate

The backplate was mounted with the motor attached and ckecking for proper alignement of the motor in the housing. I used UHU Endfest 300 with a working time of 2 hrs and permanent bond after 24hrs. This glue holds up to 300kg! This resulted in a perfect, very solid backplate construction with no rubbing of the motor in the housing.
Regards, Chris
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Old Nov 05, 2007, 01:06 AM
It's like an addiction!
Downwind3Zero's Avatar
NY, Rochester
Joined Oct 2003
1,450 Posts
Quote:
Originally Posted by foncy330
Hi,

The 130A max discharged is a note labelled on the Lipo, Im very new to electrics,so im still pulling myself in.
What do you recommend for the motor?
If I cannot use this 2300kv motor on My AMD hawk, what application could I use it?

Many thanks!
Welcome to electrics foncy! Trial and error is part of what we've all gone through - you'll find plenty of answers from people here though!
I would have to check on the motor, but you may be able to use it in a 90mm fan, providing it fits.
Regards, Chris
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Old Nov 05, 2007, 01:28 AM
It's like an addiction!
Downwind3Zero's Avatar
NY, Rochester
Joined Oct 2003
1,450 Posts
First run-up

The first run-up was performed using the 6mm collet included in the fan but without the cone (definately not well aligned).
10S Hyperion LS 6300, OEMRC 100A 12S ESC set to low timing, were used.
I was able to push it to 1/2 throttle before vibrations set in. At that point it was pulling 25A and producing about 900-1000 W and it blew my wifes dog into a corner (OK it's a small dog ). Motor and ESC stayed cool.
Note to myself: use earplugs next time.
Regards, Chris G
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Old Nov 05, 2007, 04:17 AM
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gamba's Avatar
Denmark
Joined Jun 2007
4 Posts
AMD Hawk with 4,5" UH Fan

Funny… I have just build an AMD Hawk with same setup. A friend and I bought the 700kv 1000kv 1200kv and the 1400kv UH OEMRC motors and the 4”, 4.5” and the 5” Fans. We are also using the OEMRC 100A reg.

The building thread is in Danish… Sorry: http://www.rc-unionen.dk/nytforum/to...TOPIC_ID=25955

After several combinations and tests I am going too try out the 700kv motor with the 4,5” Fan in the Hawk. The idée is to find cheap combinations so every one cane afford to start bigger EDF projects.

Her are the test results:
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Last edited by gamba; Nov 05, 2007 at 04:29 AM.
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Old Nov 05, 2007, 05:49 AM
Registered User
Dubai
Joined Jan 2007
5 Posts
Thanks

Hi Chris,

Thank you, I guessed I have to experiment. I just ordered another ESC HW100A HV and the 1400kV motor from UH.

What should be the target RPM for the AMD Hawk? must it be around 20k to 30k RPM?
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Old Nov 05, 2007, 06:23 AM
It's like an addiction!
Downwind3Zero's Avatar
NY, Rochester
Joined Oct 2003
1,450 Posts
Quote:
Originally Posted by gamba
Funny… I have just build an AMD Hawk with same setup. A friend and I bought the 700kv 1000kv 1200kv and the 1400kv UH OEMRC motors and the 4”, 4.5” and the 5” Fans. We are also using the OEMRC 100A reg.

The building thread is in Danish… Sorry: http://www.rc-unionen.dk/nytforum/to...TOPIC_ID=25955

After several combinations and tests I am going too try out the 700kv motor with the 4,5” Fan in the Hawk. The idée is to find cheap combinations so every one cane afford to start bigger EDF projects.

Her are the test results:
That's Great! You'll be able to help me once I start building then!!
As for a cheap setup, obviously the reason for using some of the UH components, the components used here are approx. 300$ which is pretty reasonable compared to the classy components.
Regards, Chris
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Old Nov 05, 2007, 06:24 AM
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jjantti's Avatar
Finland
Joined Sep 2004
307 Posts
foncy330 I'm afraid that your 1400kv finds 5" fan too hard to run and melts in the process
The A50 14s has about one third of it's kv thus tree times the torque.

The fan takes 2kW already at 17,5krpm it would take lot more to spin 20k+.
Very very rough estimate with your motor and 2kW:
1400kv specified -> maybe 1200kv with load?
17500/1200= 14,6Volts
2000W/14,6V= 137Amps

is it going to hold that?

Big fans need lots of torque. Specially the Haoye because the huge pitch and high blade count.
kv of 1400 is in the range of 90mm fans but not 127mm or 5"...

/Jyri
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Old Nov 05, 2007, 06:28 AM
It's like an addiction!
Downwind3Zero's Avatar
NY, Rochester
Joined Oct 2003
1,450 Posts
That's correct jjantti - torque is the ticket for the 5" fan!
I'll be posting figures and graphs soon..
Regards, Chris
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Old Nov 05, 2007, 06:37 AM
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jjantti's Avatar
Finland
Joined Sep 2004
307 Posts
I have been struggling with myself not buy one 5"...
I already have A50 16s. Installed into Hayoe... some cheap o controller...
14-15s batteries... OK - Maybe it is too hard core

/Jyri
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