Project Dyn-E-Max/ TJ A-4

Ron101 · Oct 14, 2009, 08:55 PM

Looks like my other thread has been removed (not by me)
My Dyn-E-Max Scorpion has arrived (3 1/2 weeks from the day I ordered it) While Fred may not be all that great at PR and Communication... I must say that the machine work is top notch and the fan looks very nice. Over the next few days the swap will take place in my Tam Jets A-4. I have bought a new scale... the plan is to get a baseline reading off my DS-94 1521 2y setup. It's been awhile since I ran the numbers on it and my packs have broken in more. So I'll weigh the plane again, hit it on the Watt meter and see how many pounds thrust its making.

Then install the Dyn-E-Max and compare... I'm really interested to see what the amp/watts are at different throttle settings and compare them...1/2 , 3/4 and full throttle

All this will really mean nothing... the flight test will tell the tell
I'm not looking for a miracle. If it will fly close to the same as now, give about the same flight time and have a wonderful sound I'll be a happy camper.

I'll have video and some pictures to come in the next few days.
If all works well I plan to dull out the A-4 and weather it over the winter.
Hope to have it in the air Sunday

Ron

lavochkin · Oct 14, 2009, 09:27 PM

I am super interested to see how it flies this one!!! If ya can get video. I know its really hard to as I never can get anyone to video for me. Good luck and lets see some swap pics!!

Ron101 · Oct 14, 2009, 10:10 PM

I'm really curious how this will go

if you havn't seen it this is the before video with the DS-94:

Tam Jets A-4 EDF with music (4 min 24 sec)

If my bud can make it out will have a video... last week he said he would be there so I'll double check

corsair nut · Oct 14, 2009, 10:13 PM

looking forward to it ron. post some pics

mavdriver · Oct 14, 2009, 10:24 PM

Yes me too

kevin · Oct 14, 2009, 10:27 PM

good luck Ron. Very interested in your comparison.

having watched your video, I know which one will sound better

a little something for you to "listen" to ....

http://www.rcgroups.com/forums/showt...light=amd+hawk

Ron101 · Oct 14, 2009, 11:16 PM

Couple teasers
Also was happy to see that the fan is lighter than advertised at 1 lb 14.6 oz
lighter than two pounds is pretty good

The machine work is perfect

I'll start work tomorrow

monkamarm2000 · Oct 14, 2009, 11:47 PM

cool deal! cant wait to see how it goes for ya! and I'm sure your gonna anyway, but i'd say check sheer amps to watts even at mismatched throttle settings. that way ya know if one takes for example %62 throttle to match anothers %50 level, wht are the actual in and out comparo. that way you could also adjust throttle or expo to have a familiar throttle setting with new system.

Barry

wrp7317 · Oct 15, 2009, 12:53 PM

Ron,

I got my fan unit today

. Like you said the workmanship is great. I'm putting mine in a YA F-4. I'm still completing the build of the jet, so it will be awhile before I'll get it in the air. In the mean time I'll follow your progress and dream.

Bobby

gunradd · Oct 15, 2009, 12:57 PM

Hey Bobby can you post your build on the YA F4 I would love to see how that plane is done. Its a cheap airframe and looks like would do well on EDF.

Ron looking forward to hearing that thing bro!

Quote:

Originally Posted by wrp7317

Ron,

I got my fan unit today

. Like you said the workmanship is great. I'm putting mine in a YA F-4. I'm still completing the build of the jet, so it will be awhile before I'll get it in the air. In the mean time I'll follow your progress and dream.

Bobby

eazyp2 · Oct 15, 2009, 01:48 PM

Hi RON,Im curious as to what is your planned AUW. Its gonna be interesting!

gunradd · Oct 15, 2009, 01:58 PM

Quote:

Originally Posted by eazyp2

Hi RON,Im curious as to what is your planned AUW. Its gonna be interesting!

Paul!!! I havent heard from ya in a while. That means your cooking something up

What ya building bro???

wrp7317 · Oct 15, 2009, 02:16 PM

Quote:

Originally Posted by gunradd

Hey Bobby can you post your build on the YA F4 I would love to see how that plane is done. Its a cheap airframe and looks like would do well on EDF.

Ron looking forward to hearing that thing bro!

I'll see what I can do. I've completed the tailfeathers and servos installation for them and I'm ready to move on to the wings. I've built several YA kits (P-47, Spitfire, etc.), but this is my first jet. I'm really happy with the quality of the kit. The reason I chose the F-4 is because it was a cheaper way for me to get my feet wet with the jets and it will do very well as an EDF. I built my last P-47 as an electric and I know it won't be my last. It's fast and it so cool to hear it go by and all you hear is a little prop noise.

http://www.rcgroups.com/forums/showt...ellow+aircraft

Bobby

Neil Guildford · Oct 15, 2009, 03:54 PM

Hi Ron
Be interesting to see how you compare the sound of this to the Stumax.
I emailed Fred about 2 weeks ago and haven't had any sort of reply....his product needs to be good if he's to sell many.
Neil

rvincent · Oct 15, 2009, 07:52 PM

Glad you got it Ron

Lets be clear here though

The fan is Tom Cook's Dynamax. The motor is Scorpion's. Only part that is Fred's is the center hub. Lets keep the credit where it is truly due. Fred does make a nice hub.

I know you will like it Ron

I've been working with this fan for over a year now, and flying with them for more than 15 years! It has been the Ducted fan measuring stick for almost 20 years!

Oct 14, 2009, 08:55 PM	#1
Ron101 Registered User Join Date: Jul 2007 Location: Brentwood, California Posts: 1,926	Project Dyn-E-Max/ TJ A-4 Looks like my other thread has been removed (not by me) My Dyn-E-Max Scorpion has arrived (3 1/2 weeks from the day I ordered it) While Fred may not be all that great at PR and Communication... I must say that the machine work is top notch and the fan looks very nice. Over the next few days the swap will take place in my Tam Jets A-4. I have bought a new scale... the plan is to get a baseline reading off my DS-94 1521 2y setup. It's been awhile since I ran the numbers on it and my packs have broken in more. So I'll weigh the plane again, hit it on the Watt meter and see how many pounds thrust its making. Then install the Dyn-E-Max and compare... I'm really interested to see what the amp/watts are at different throttle settings and compare them...1/2 , 3/4 and full throttle All this will really mean nothing... the flight test will tell the tell I'm not looking for a miracle. If it will fly close to the same as now, give about the same flight time and have a wonderful sound I'll be a happy camper. I'll have video and some pictures to come in the next few days. If all works well I plan to dull out the A-4 and weather it over the winter. Hope to have it in the air Sunday Ron

Oct 14, 2009, 11:16 PM	#7
Ron101 Registered User Join Date: Jul 2007 Location: Brentwood, California Posts: 1,926	Couple teasers Also was happy to see that the fan is lighter than advertised at 1 lb 14.6 oz lighter than two pounds is pretty good The machine work is perfect I'll start work tomorrow Attached Thumbnails 53.5 KB · Views: 170 51.7 KB · Views: 126 73.1 KB · Views: 103

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Discussion Dyn-E-Max Ducted Fan	bladexz2	Electric Ducted Fan Jet Talk	794	Nov 16, 2009 12:35 AM
Discussion AMD / JHH HAWK - Dyn-E-Max	kevin	Electric Ducted Fan Jet Talk	87	Aug 28, 2009 09:46 PM
Video Cook F-4 / twin Dyn-e-max	kevin	Airplanes - Electric Videos	10	Aug 17, 2009 03:37 PM
Discussion Dyn-E-Max variable exhaust nozzle	bladexz2	Electric Ducted Fan Jet Talk	10	Feb 04, 2009 02:39 PM
Discussion Tam Jet F-16 w/ Dyn-e-max	Eagle15	Electric Ducted Fan Jet Talk	28	Jan 23, 2009 09:33 AM

Oct 14, 2009, 09:27 PM	#2
lavochkin Soviet Aircraft nut !!! Join Date: Oct 2006 Location: Mokena,Illinois -United States Posts: 4,699	I am super interested to see how it flies this one!!! If ya can get video. I know its really hard to as I never can get anyone to video for me. Good luck and lets see some swap pics!!

Oct 14, 2009, 10:13 PM	#4
corsair nut 150mph 90mm JHH COUGAR 3.5KW:D Join Date: Jan 2006 Location: tehachapi, CA Posts: 10,134	looking forward to it ron. post some pics

Oct 14, 2009, 10:24 PM	#5
mavdriver Registered User Join Date: May 2002 Location: southern calif. Posts: 1,886	Yes me too

Oct 14, 2009, 10:27 PM	#6
kevin Registered EDF abUser Join Date: Aug 1999 Location: ohio Posts: 2,496	good luck Ron. Very interested in your comparison. having watched your video, I know which one will sound better a little something for you to "listen" to .... http://www.rcgroups.com/forums/showt...light=amd+hawk

Oct 14, 2009, 11:47 PM	#8
monkamarm2000 Registered User Join Date: Aug 2002 Location: NorCal Silicon Valley Posts: 11,101	cool deal! cant wait to see how it goes for ya! and I'm sure your gonna anyway, but i'd say check sheer amps to watts even at mismatched throttle settings. that way ya know if one takes for example %62 throttle to match anothers %50 level, wht are the actual in and out comparo. that way you could also adjust throttle or expo to have a familiar throttle setting with new system. Barry

Oct 15, 2009, 12:53 PM	#9
wrp7317 Registered User Join Date: Dec 2007 Location: Mt. Juliet, TN Posts: 57	Ron, I got my fan unit today . Like you said the workmanship is great. I'm putting mine in a YA F-4. I'm still completing the build of the jet, so it will be awhile before I'll get it in the air. In the mean time I'll follow your progress and dream. Bobby

Oct 15, 2009, 01:48 PM	#11
eazyp2 Registered User Join Date: Oct 2007 Posts: 200	Hi RON,Im curious as to what is your planned AUW. Its gonna be interesting!

Oct 15, 2009, 03:54 PM	#14
Neil Guildford Neil Jarvis Join Date: Sep 2004 Location: Surrey U.K. Posts: 1,096	Hi Ron Be interesting to see how you compare the sound of this to the Stumax. I emailed Fred about 2 weeks ago and haven't had any sort of reply....his product needs to be good if he's to sell many. Neil

Oct 15, 2009, 07:52 PM	#15
rvincent 20,000 Screaming Watts! Join Date: Jul 2004 Location: Fontana, California, United States Posts: 17,617	Glad you got it Ron Lets be clear here though The fan is Tom Cook's Dynamax. The motor is Scorpion's. Only part that is Fred's is the center hub. Lets keep the credit where it is truly due. Fred does make a nice hub. I know you will like it Ron I've been working with this fan for over a year now, and flying with them for more than 15 years! It has been the Ducted fan measuring stick for almost 20 years!