Originally Posted by demetrius

Does Stu have a 120 out yet?

I can't speak for him however I was able to order one by sending the money and waiting for as long as it took, actually I purchased two that way and am very satisfied with the outcome.
Joe

Nice work Ed! The Arson fan looks and sounds awesome!! Do we have numbers on this yet?

rvincent,

here's the numbers I got from Ed (A10 pilot)

Setup: Byron shroud, Scorpion 5035-500KV out-runner, Castle Creations 160 amp HV2 ESC, Dinogy 5000 mah. 65C batteries 12S configuration

NOTE: Batteries were only used for one run and then balance charged for the next run
Ambient temp.: 73 deg. Altitude: 671 MSL,

Runs without tail pipe:

Impeller Watts Amps Volts RPM Thrust Efflux

Initial (startup):

Arson 8005 187 49.7 14536 19 lb. 4 oz. 233 mph
Stabilized at 1 minute 30 seconds:

Byron 3350 75 44.6 16804 13 lb. 2 oz. 167
Stabilized at 1 minute 35 seconds:

If you are referring to the price per unit, don't have those numbers yet.

Ed and I have discussed a replacement motor tht will give us our targeted goal of 25lbs, the Scorpion motor (5035-500) is not efficient for this impeller. So the next data test will be different.

Sorry did not mean to hijack the thread, I wanted to ask some question for Futaba RX settings and retract questions.

Joe

Originally Posted by rvincent

Nice work Ed! The Arson fan looks and sounds awesome!! Do we have numbers on this yet?

Bob:

Thanks very much for the kind words.

Joe and I have been working on this for more than 2 years and I have done a lot of bench runs but we are now getting ready to do some flight testing. The nice thing about this rotor is that Joe and I have designed it to be a "reconfigurable" rotor. By that I mean that you will be able (when it comes on the market) to "build" the rotor as a 9 blade, 11 blade or a 15 blade rotor.

We have spent a considerable amount of time trying to find a motor that will work. After talking to an aero and electrical eng. who is a propulsion specialist for a large aircraft manufacturer and discussing the available motors and the rpm we were running at, he believes we need to find a motor that can run at a high efficiency when running at about 14K rpm. Right now, the motors we know of are all running their best efficiency at about 25K and when running at 14K the current motors are terribly inefficient at the rpm we are running. So the search continues. I have thought of trying to find a 2 to 1 planetary deduction gear box but these are hard to find. As you can se from the data below, the current is high but one thing to remember is that you should only be there for VERY short periods of time. The below data is on 12S and our intent is to try a lower KV motor (perhaps 400 or 420) on 14S to keep the same RPM but lower the current. I just have not had time to do this but it will be interesting to see how this works. After a lot of time with this rotor, it runs and produces the best thrust around 14K. I believe we could get more thrust at a bit higher RPM but we need to find the right motor for 14S or 15S and then I think it would be even more impressive.

In my opinion, the real value of a fan like this is that with the 6" rotor you will get a LOT of volume so flying the bigger planes will be a little easier as the added volume is very helpful and the efflux on this fan really surprised me as it is pretty high at a relatively low rpm. I would compare this fan to my Maverick in that the 90m fan flew the plane well but the 115mm fan flew it much better. I think that a Dynamax or even the Byron 5 blade fan will fly a large plane well but this fan will fly it better.

I have done a lot of bench testing on this setup and here are the numbers.

Setup:
Arson 15 blade rotor
Scorpion 5035 motor of 500 KV
Batteries: Dinogy 12S 6000 mah 65C (3 ea. 4S packs)
No intake ring (other than the radius on the front of the Byron fan) and no tailpipe

Power: 8003 watts
Current: 186 amps
RPM: 14, 181
Volts 49.7
Efflux: 233 mph
Thrust 19 lbs. 7 oz.

Setup:
Arson 9 blade rotor
Reminder of the setup is as above

Power: 6600 watts
Current: 161 amps
RPM: 14,531
Volts: 49.7
Efflux: 197 mph
Thrust: 16 lbs. 13 oz.

We continue to work on the system but Joe can update everyone on the status of the fan.

As Joe mentioned, I have designed a set of adapters that will allow someone to mount either an in-runner or out-runner to a Byron fan. The setup has two aluminum pieces to it. There is a front adapter unit that holds a radial bearing for motor shaft support and there is an aft adapter that the motor mounts to. IF running an our-runner then you will need to replace the shaft on the motor (8mm shaft). IF running an in-runner then I have a "coupler" that attaches to the front of the motor shaft and then there is an 8mm shaft extension (about 55mm long) that is inserted into the coupler and exits thru the front bearing support and into the rotor or prop adapter.

I am currently waiting for the first batch of adapters and once I get them I will have an idea of the pricing.

Ed

Great work guys!!

Originally Posted by rvincent

Great work guys!!

Bob:

Thanks for the kind words. Much appreciated.

Ed

I thought I would update the thread regarding the cockpit tubs I previously sold. I have been working on a couple of new vacuum tables as well as a heating oven. In addition I have been working on a new mold for the tub. After some thought and comments from others I have changed the tub a little bit. The previous tub had a "seat back" for the pilot and some details behind the seat. I have had a few guys ask me for a tub that would accommodate two pilots or one pilot and a GIB (guy in back) so the new tubs will have the basic tub bottom and I will offer the seat back and a small "rectangular box" that you can add for some more detail.

Take a look at the photos and let me know what you think. The "rectangular box" is not in the photo but it will be provided. Right now I am seeking comments and not yet taking orders so please offer input but no requests for units just yet. Once I get you input, I will decide what to mold and offer.

Ed

Originally Posted by socshooter

Gentlemen,

finally going to take the plunge and decided to install the Arson EDF on a Falcon 120 for a maiden test flight.
Setup:
Arson Impeller 15 blade inside a stock Byron Shroud
Scorpion 5035 500 kV
Ed Valls adapters
Flight Power EVO 30 6400 mAh (12S)
Jeti Spin 170 ESC

Pics attached, Happy Holidays and Merry Christmas.

Cheers,
joe

PS want to attach videos comparing both Byron and ARSON however its not letting me load them.

Now that is a freakn fan!

ED

I have a Neu 2230 2.5y with a kv of 290. Let me know if your interested and I can send it your way.

Mark

Originally Posted by MarkF

ED

I have a Neu 2230 2.5y with a kv of 290. Let me know if your interested and I can send it your way.

Mark

Mark:
PM sent

Thanks,
Ed

Originally Posted by A10pilot

I thought I would update the thread regarding the cockpit tubs I previously sold. I have been working on a couple of new vacuum tables as well as a heating oven. In addition I have been working on a new mold for the tub. After some thought and comments from others I have changed the tub a little bit. The previous tub had a "seat back" for the pilot and some details behind the seat. I have had a few guys ask me for a tub that would accommodate two pilots or one pilot and a GIB (guy in back) so the new tubs will have the basic tub bottom and I will offer the seat back and a small "rectangular box" that you can add for some more detail.

Take a look at the photos and let me know what you think. The "rectangular box" is not in the photo but it will be provided. Right now I am seeking comments and not yet taking orders so please offer input but no requests for units just yet. Once I get you input, I will decide what to mold and offer.

Ed

Look very good blockers, in which material these emptying?
Acetate? PVC?
Do you have an average cost?

Carlos:

PM sent. Please check your in box.

Ed

I need some advice from those of you who fly the Falcon over the 20lb AUW range. I can't remember the exact weight of my setup right now but I know its less than 19lbs. Up to this point I have been using Zippy/Turnigy 5800mah batteries. Unfortunately, or fortunately, they are all dead from sitting in storage for well over two years. So, I now have the option of buying new batteries and I am considering 8000mah Nano's.

Now, the main issue will be the weight. I will be adding just over a pound to the total weight. Until I get a chance to weigh it again, I won't know for sure but i'm certain I will be very close to 20lbs with the added weight. The performance with the old seup was good...not great, but good enough for what I consider to be scale performance. So, for those of you who fly it around or above the 20lb weight range, what are your thoughts? Should I go ahead and go for the 8000's?

Originally Posted by Par_18

I need some advice from those of you who fly the Falcon over the 20lb AUW range. I can't remember the exact weight of my setup right now but I know its less than 19lbs. Up to this point I have been using Zippy/Turnigy 5800mah batteries. Unfortunately, or fortunately, they are all dead from sitting in storage for well over two years. So, I not have the option of buying new batteries and I am considering 8000mah Nano's.

Now, the main issue will be the weight. I will be adding just under a pound to the total weight. Until I get a chance to weight it again, I won't know for sure but i'm certain I will be very close to 20lbs with the added weight. The performance with the old seup was good...not great, but good enough for what I consider to be scale performance. So, for those of you who fly it around or above the 20lb weight range, what are your thoughts? Should I go ahead and go for the 8000's?

Couple things about running 8000's... The weight is no problem mine is right at 20lbs with the 8000's and it flys great! The big issue is the power system I am currently running a Dynamax with a motor that works very well with the 8000's but when I first got the Falcon I had a Scorpion DynEmax and flew it on the 5800's that you had. I decided to run the 8000's with that can system and it worked great BUT the motor temps spiked and most likely was going to burn the motor up over time! The power that the 8000's put out is significantly more than the 5800's it's been a few years since the change over but if I remember right it went up about 10-15 amps. Hope that helps.

Brian

Originally Posted by bri6672

Couple things about running 8000's... The weight is no problem mine is right at 20lbs with the 8000's and it flys great! The big issue is the power system I am currently running a Dynamax with a motor that works very well with the 8000's but when I first got the Falcon I had a Scorpion DynEmax and flew it on the 5800's that you had. I decided to run the 8000's with that can system and it worked great BUT the motor temps spiked and most likely was going to burn the motor up over time! The power that the 8000's put out is significantly more than the 5800's it's been a few years since the change over but if I remember right it went up about 10-15 amps. Hope that helps.

Brian

I did not think this would even be an issue but i'm glad you pointed it out. My current motor/fan setup is one that I purchased from Knife Liddle off RCG. I have never actually measured the temps on the motor up to this point but it does get hot to the touch with the current setup pulling about 130amps.

What setup do you run? I have been looking to upgrade to a larger fan for more performance/efficiency. What kind of numbers do you normally see?