RE: Great Planes Super Sportster EP with Modified Power System

RE: Great Planes Super Sportster EP with Modified Power System
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RE: Great Planes Super Sportster EP with Modified... - 8/28/2006 1:53:01 AM

mikedsilva

Posts: 218
Joined: 1/4/2004
From: Brisbane, AUSTRALIA
Status: offline

one thing i have found with electric powered planes, is that the ESC can cause a lot of interference to the Rx. In some cases, using a PCM Rx will help fix your problems. I almost always use a ferrite ring (choke) around the servo lead that connects the ESC to the receiver... this way, it helps to reduce any unwanted RF that may make its way from the ESC to the Rx.

Range test with the motor off, and then with the motor on. I was finding that without the ferrite bead/choke, i could only range test to a few metres with the motor on. Not good. However, just adding the choke gave me a normal range test.

Strange but it works.

I fly a Hotliner with an expensive Hacker motor, CC 125amp controller and a big money composite moulded airframe, so i have learned not to take chances!

(in reply to dr_d_2k)

Post #: 176

RE: Great Planes Super Sportster EP with Modifie... - 8/28/2006 2:13:13 AM

dr_d_2k

Posts: 57
Joined: 5/13/2006
From: Melbourne, FL, USA
Status: offline

Thanks for the advice. The choke indeed should help with noise. It won't add much weight and could only help.

I will add that this week. I range tested fine with the motor off. I haven't tried with it on. I will do that before I add the choke. this is my first electric and the learning curve is definitely there. I like the cleanness and quietness of electric. The wait on charges is a bit of a bummer. Gas is just cool, fuel and go. Then again I have to drive further to fly my gas and glow planes.

(in reply to mikedsilva)

Post #: 177

RE: Great Planes Super Sportster EP with Modified... - 8/28/2006 5:11:52 AM

Charley

Posts: 1099
Joined: 12/5/2001
From: Kerrville, TX, USA
Status: offline

quote:

ORIGINAL: dr_d_2k

Charley,

When I got back to the house I took the rx out and hooked a fresh battery and servo to it and it didn't even chirp. I took the crystal out of that rx and put it in another and still nothing. I haven't tried a different crystal in the 'bad' rx to see if that works. I had only been up about 5 minutes or so. The battery didn't take much to charge back to full. It seems like the tx or the crystal went. I didn't know crystals go bad. I haven't had a tx go bad either for that matter.

I haven't had any heat issues. The batteries are a cool warm after mostly 1/2 throttle flights with bursts of WOT. ESC is never really warm.

Have you cut any extra breather holes in the fuse. One of the guys at the field couldn't believe it was staying cool without extra exit holes.

Dave

Sounds like it could have been a radio failure. The trouble is that you don't know if you're looking at cause or effect of the crash. The only radio failure I have had was due to the switch harness developing "black wire" disease.

The only air exit holes in my fuse are the six stock ones behind the wing. I did cut a large hole in the center of the extra firewall that the motor is fastened to so that air could pass more easily through the motor and on back. Also, I had hogged out the hole in the original firewall so that the larger brushed motor would fit through it. So all my air hole mods are up front.

CR

< Message edited by Charley -- 8/28/2006 5:43:57 AM >

_____________________________

Charley
ccrobins@ktc.com

(in reply to dr_d_2k)

Post #: 178

RE: Great Planes Super Sportster EP with Modified... - 8/28/2006 5:40:21 AM

Charley

Posts: 1099
Joined: 12/5/2001
From: Kerrville, TX, USA
Status: offline

quote:

ORIGINAL: mikedsilva

HOWEVER, my plane is REALLY nose heavy! My motor is lighter than the original, my battery is lighter than the original, however i am very noseheavy! i am sure that a read a few posts claiming the CG was spot on... how did they manage this?

i am thinking of relocating one or both servos to the tail to make up for the balance... what do you think?

Mine was noseheavy with the car motor/gearbox and a 9.6 volt NiMH A-cell battery in the stock location. I had to shove the battery all the way back to correct this. I embedded the aileron servo deeper into the wing for battery clearance.

With the outrunner and 3150 LiPo, I had to add 3/4 oz to the nose. I put three little 1/4 oz stick-on weights just behind the air intake of the cowl. The LiPo is a long skinny one and it's as far forward as I can get it.

I guess you have the batteries as far back as you can get them. How about taking one out? I suppose if all else fails there's room for the servos in the tail.

CR

_____________________________

Charley
ccrobins@ktc.com

(in reply to mikedsilva)

Post #: 179

RE: Great Planes Super Sportster EP with Modified Powe... - 9/17/2006 3:27:49 PM

rev321

Posts: 11
Joined: 12/22/2004
From: Bowie, MD, USA
Status: offline

Hi Carlos,
I have been reading all of your reports on the Supersportster EP, you sold me I ordered one from Tower and it has arrived. Now I am in the process of putting it together. This is the first time I ever bought an ARF, I must say it is well made.
Kenny (skyvolt12@yahoo.com)

(in reply to toddhosfeld)

Post #: 180

RE: Great Planes Super Sportster EP with Modified Powe... - 9/18/2006 4:30:09 PM

Charley

Posts: 1099
Joined: 12/5/2001
From: Kerrville, TX, USA
Status: offline

quote:

ORIGINAL: rev321

Hi Carlos,
I have been reading all of your reports on the Supersportster EP, you sold me I ordered one from Tower and it has arrived. Now I am in the process of putting it together. This is the first time I ever bought an ARF, I must say it is well made.
Kenny (skyvolt12@yahoo.com)

What are you planning to power it with?

CR

_____________________________

Charley
ccrobins@ktc.com

(in reply to rev321)

Post #: 181

RE: Great Planes Super Sportster EP with Modified... - 9/18/2006 5:31:16 PM

Bobet

Posts: 13
Joined: 4/2/2005
From: Hartselle, AL, USA
Status: offline

Hi Mike,
Finally got my Super Sport ready to fly, but when I range checked it, the control surfeses went wild at onlt twenty feet or so. What is aferrite ring (choke) that you mentionrd? And how does it work. I don't dare try to fly this plane as is.
Bob Murray

(in reply to mikedsilva)

Post #: 182

RE: Great Planes Super Sportster EP with Modified P... - 9/27/2006 7:24:31 PM

opjose

Posts: 6146
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: offline

quote:

ORIGINAL: chagolucho

Hi everyone, I've had gained so much experience now, im doing inverted flies, fast turns, rolls, hammerheads, etc, I just love it!!!! What a great f' plane!! Of course now I want some more power (who doesnt?) and came to this ebay seller :

http://cgi.ebay.com/New-300W-High-Torque-1100rpm-v-RC-Brushless-Motor_W0QQitemZ6060172781QQcategoryZ34056QQtcZphotoQQcmdZViewItem

Now the question, should I go for a 300watt or a 400watt outrunner brushless, and a motor that can take 35Amp may burn a 30Amp esc? ( Look at the brushless esc of the seller) And which props would you use for those motors, Im thinking in all of these with the stock batt (8.4v 2100mah).

I saw this post and couldn't resist.

I ordered the 400W version of the above with the 60AMP ESC from the same site.

I already have a bunch of Lipos with matching connectors so this was what I needed.

Can't beat the price.

_____________________________

-
Build em'', fly em'', crash em'' and build more.

(in reply to chagolucho)

Post #: 183

RE: Great Planes Super Sportster EP with Modified P... - 9/28/2006 8:27:04 PM

Bobet

Posts: 13
Joined: 4/2/2005
From: Hartselle, AL, USA
Status: offline

I finally got my GP Super Sportster finished and have made three flights with it. It is flying with the motor ESP and battery that came with it. It dosen't have a lot of power, but it will lift off the grass runway and loop and do a roll. I haven't made any long flights. Only.5 0r 6 minutes,, but I did check it on the ground with a full charge, I ran it 30 sec at full throttle and one minute at half throttle and kept this up till the motor stopped at about 13 minutes. I worked the controls while doing this. When the motor stopped, I closed the throttle then opened it and I would have had power to land. I'm pleased with the plane and may someday change to a brushless and Li-Po.
Bob Murray at Decatur, Ala.

(in reply to opjose)

Post #: 184

RE: Great Planes Super Sportster EP with Modified P... - 9/29/2006 3:18:35 PM

Charley

Posts: 1099
Joined: 12/5/2001
From: Kerrville, TX, USA
Status: offline

quote:

ORIGINAL: Bobet

I finally got my GP Super Sportster finished and have made three flights with it. It is flying with the motor ESP and battery that came with it. It dosen't have a lot of power, but it will lift off the grass runway and loop and do a roll.

SNIP

I'm pleased with the plane and may someday change to a brushless and Li-Po.

Bob Murray at Decatur, Ala.

Glad you're happy with your SS EP. No one ever said the model wouldn't fly with the stock power system, it's just that most of us decided it was marginal. Any way you look at it, it really is a sweet flying model.

CR

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Charley
ccrobins@ktc.com

(in reply to Bobet)

Post #: 185

RE: Great Planes Super Sportster EP with Modified P... - 10/10/2006 3:54:16 AM

opjose

Posts: 6146
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: offline

guapoman:

I was trying to get the specs for the C-30 ESC included with the Electrifly kit.

I noticed that this ESC was once rated as one of the "silver" Electrifly ESC's... googling a bit I found that the ESC is actually rated to handle up to 12v.

See: http://www.vanns.com/shop/servlet/item/details/616039914

What does this mean?

Can you put a LiPo on it?

< Message edited by opjose -- 10/10/2006 3:56:06 AM >

_____________________________

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Build em'', fly em'', crash em'' and build more.

(in reply to Charley)

Post #: 186

RE: Great Planes Super Sportster EP with Modifie... - 10/17/2006 4:28:31 PM

rsiaviation

Posts: 36
Joined: 9/13/2006
From: califon, NJ, USA
Status: offline

Hello,
I have had my super sportster for about a year now. I have a great planes T-600 motor and gearbox, would that be worth putting in the plane? I have also been looking at a brushless setup with lipo batteries. I want to have more than a 1-1 thrust ratio just because. I have been loking at electrifly's new brushless motors and I think that would be a cheap way to get the performance I want. If anyone has any suggestions they would be greatly appriciated.

Rsiaviation

(in reply to opjose)

Post #: 187

RE: Great Planes Super Sportster EP with Modifie... - 10/17/2006 4:56:29 PM

opjose

Posts: 6146
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: offline

While I purchased the Electrifly combination (mistake), after I saw the post about E-bay I ran accross this

http://www.bphobbies.com/view.asp?id=V450327&pid=W392031

This is EXACTLY the same motor I picked up off of Ebay but it includes the mount.

This is what I am going to put into my SS.

I am currently working on it so I haven't gotten to installing the new motor.

It should have more than enough power with 2 2200mAh LiPo 11v batteries in parallel (4400mAh) and a 60 amp ESC.

This is MUCH cheaper than the E-Flite equivalents.

< Message edited by opjose -- 10/17/2006 4:57:13 PM >

_____________________________

-
Build em'', fly em'', crash em'' and build more.

(in reply to rsiaviation)

Post #: 188

RE: Great Planes Super Sportster EP with Modifie... - 10/18/2006 9:02:46 PM

Charley

Posts: 1099
Joined: 12/5/2001
From: Kerrville, TX, USA
Status: offline

quote:

ORIGINAL: rsiaviation

Hello,
I have had my super sportster for about a year now. I have a great planes T-600 motor and gearbox, would that be worth putting in the plane? I have also been looking at a