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Old Oct 15, 2012, 11:46 PM
Argue for your limitations
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Lincoln, CA
Joined Oct 2006
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Quote:
Originally Posted by rhampton View Post
Thanks for the advice. well,,,,,based on your experiment test i see that your 4s is only pulling no more than 30 amps even with the 8x6 prop. im wondering now if i can get away with using the stock 40a esc with a 4s 3000mah and just use the 9x4 APC E prop. Doesnt seem like it would be a threat to the stock 40a esc at all...that way i can just leave everything the way it is....what do you think on this
DO NOT do this - You will burn up the ESC, probably in the first flight. The problem is the ESC has to drop ~11.1 to 5v for the receiver. Since it is a linear ESC, the ESC gets a bit hot. When you ask the same ESC to drop ~14.8v to 5v, the resulting heat will toast the ESC and possibly start a fire. Ask me how I know (besides a heck of a lot of reading/research).
AJ
To be safe, get a 60A ESC and a separate 5a BEC (switching). Of course, if you can find a 60a switching ESC with at least a 4a BEC built-in, all is good.
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Old Oct 15, 2012, 11:52 PM
Argue for your limitations
ajbaker's Avatar
Lincoln, CA
Joined Oct 2006
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Originally Posted by rhampton View Post
i didnt realize how heavy this glider is. i have sort of a bad back. i now have to Wonder is my back going to go out trying to hand launch this thing once i put my 4s and everything is ready to go?
If your back is Ok now, it should not be a problem. My only hand-launch went so easy, I was surprised. It just simply glided out of my hand (hold behind the wheel) flat and true. I am not very big (5'9"-155/lbs) and did not have any problem whatsoever. I posted this video before. But, check out the hand launch at 1:53.
AJ
P.S. My plane has an AUW of exactly 5lbs.

SSS#3 Frustration and Hand Launch (2 min 51 sec)
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Old Oct 16, 2012, 12:46 AM
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San Diego, CA
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Originally Posted by fastfwd View Post
hmmm i barley had to throw it,got friends bad servo replaced to day and he flew it.sweet as can be but it is simple to hand launch about 3/4 throttle and just a touch of up elevator and she floats off and up. two 3s batteries in parallel one 3600 and one 2200 balances fine
Yep, when I had two 2200mAh 3s batteries in the nose of mine (only one wired), it was slightly tailheavy, and floated on launch just like you describe. Did it for five flights.

Then when I put in two 4000mAh 2s batteries (wired in series for 4s), the CG moved forward and the plane was slightly noseheavy. And it started the nose-down-on-launch behavior I described.

There might be a connection there....
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Old Oct 16, 2012, 05:47 AM
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USA, FL, Clearwater
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Thanks for the lookout guys...i appreciate it. ok so out goes the 40a esc and in for the 60...However i dont have sep bec..it does have a 3a bec built in.....That's all i have..i will just splice the wires and connect my 60 and that way i dont have to take motor off........good thing is at least i have a spare 40a esc for my other small 3d plane..lol...ok while i'm on this subject of electronics...what's the best prop to use now..8x4 APC E? 8x6, 9x4?
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Old Oct 16, 2012, 07:49 AM
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Originally Posted by rhampton View Post
..what's the best prop to use now..8x4 APC E? 8x6, 9x4?
It has been said before but anyone wanting to experiment should have a power meter. I use this one, unfortunately out of stock at the moment.

http://www.hobbyking.com/hobbyking/s...dproduct=10080
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Old Oct 16, 2012, 11:00 AM
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United States, ID, Burley
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Originally Posted by ajbaker View Post
[

DO NOT do this - You will burn up the ESC, probably in the first flight. The problem is the ESC has to drop ~11.1 to 5v for the receiver. Since it is a linear ESC, the ESC gets a bit hot. When you ask the same ESC to drop ~14.8v to 5v, the resulting heat will toast the ESC and possibly start a fire. Ask me how I know (besides a heck of a lot of reading/research).
AJ
To be safe, get a 60A ESC and a separate 5a BEC (switching). Of course, if you can find a 60a switching ESC with at least a 4a BEC built-in, all is good.
By all means folks,please read all of the posts in this thread,there is a ton of things NOT to do
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Old Oct 16, 2012, 11:13 AM
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United States, ID, Burley
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Originally Posted by rhampton View Post
Thanks for the lookout guys...i appreciate it. ok so out goes the 40a esc and in for the 60...However i dont have sep bec..it does have a 3a bec built in.....That's all i have..i will just splice the wires and connect my 60 and that way i dont have to take motor off........good thing is at least i have a spare 40a esc for my other small 3d plane..lol...ok while i'm on this subject of electronics...what's the best prop to use now..8x4 APC E? 8x6, 9x4?
i am using the stock prop,seems to be fine, i mean this is a heavy plane ,it wont climb straight up but it keeps climbing, the only esc i could find at my price range was that had a 4a built in bec was this one.. HobbyKing 50A BlueSeries Brushless Speed Controller Cont. Current: 50A
Burst Current: 70A
Battery: 2-6 Cell Lipo / 5-18 Cell Ni-XX
SBEC: 5.5V/ 4A Output
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Old Oct 16, 2012, 11:40 AM
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So im glad these points were made....this will really help the next person in line..,,,,..well i already spliced the wires near esc as it was suggested...i put bullets on those wires and bullets on the esc.....that way, if i ever have to replace esc, i can just unplug and plug new one in....no need to ever take off motor...im not crazy about that long wiring tho,,,.never seen esc to motor wires that long....
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Old Oct 16, 2012, 12:21 PM
Argue for your limitations
ajbaker's Avatar
Lincoln, CA
Joined Oct 2006
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Quote:
Originally Posted by fastfwd View Post
i am using the stock prop,seems to be fine, i mean this is a heavy plane ,it wont climb straight up but it keeps climbing, the only esc i could find at my price range was that had a 4a built in bec was this one.. HobbyKing 50A BlueSeries Brushless Speed Controller Cont. Current: 50A
Burst Current: 70A
Battery: 2-6 Cell Lipo / 5-18 Cell Ni-XX
SBEC: 5.5V/ 4A Output
Good choice. That will work fine.
AJ
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Old Oct 16, 2012, 12:41 PM
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San Diego, CA
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Originally Posted by kaptondave View Post
It has been said before but anyone wanting to experiment should have a power meter. I use this one, unfortunately out of stock at the moment.

http://www.hobbyking.com/hobbyking/s...dproduct=10080
Here are two others, both in stock at HobbyPartz in Los Angeles (or so they say in their website). HP seems to believe the second one is more accurate than the first; the first, they say, is within 2%. Both are 0-100A, 8-30V (can you use them with a 2s battery? Probably not an issue with the SSS)

Has anybody tried either of them?

http://www.hobbypartz.com/aeo-p0-watt-meter.html
http://www.hobbypartz.com/88e-aepm30...att-meter.html

Amazon.com also has the WattsUp meter, 4-60V, 0-100A. I've used them on electric bikes. And they mention the Turnigy meter, scroll down. These two look very similar - anyone know if they are identical except for different labels and/or cases?
http://www.amazon.com/Watts-Meter-An...watts+up+meter
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Old Oct 16, 2012, 12:57 PM
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San Diego, CA
Joined Dec 2006
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"Soon" configuration for my SSS:

Motor: 3625 860KV outrunner, 1000W for 10x5E or 9x6E prop on 5s battery http://www.headsuprc.com/servlet/the...ushless/Detail
ESC: Hobbywing 100A, 3A switched BEC http://www.hobbypartz.com/07e-flyfun-100a.html (I might use an external switched BEC)
Battery: GensAce 5s 18.5V 4000mAh 25C/50C http://www.hobbypartz.com/98p-25c-4000-5s1p.html
Prop: Two-blade APC 9x6E, or 3-blade EMP 9x6

The idea is to let the SSS continue its usual slow-and-stately flying style at 1/2 or 1/3 throttle most of the time, but occasionally climb very steeply for brief periods if/when needed.
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Last edited by Little-Acorn; Oct 16, 2012 at 02:18 PM.
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Old Oct 16, 2012, 01:15 PM
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San Diego, CA
Joined Dec 2006
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Has anyone tried taking the shrink-tubing cover off their ESC for cooling purposes, especially in more high-powered installations?
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Last edited by Little-Acorn; Oct 16, 2012 at 02:19 PM.
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Old Oct 16, 2012, 02:56 PM
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Chilliwack, BC Canada
Joined Mar 2010
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Quote:
Originally Posted by Little-Acorn View Post
Here are two others, both in stock at HobbyPartz in Los Angeles (or so they say in their website). HP seems to believe the second one is more accurate than the first; the first, they say, is within 2%. Both are 0-100A, 8-30V (can you use them with a 2s battery? Probably not an issue with the SSS)

Has anybody tried either of them?

http://www.hobbypartz.com/aeo-p0-watt-meter.html
http://www.hobbypartz.com/88e-aepm30...att-meter.html

Amazon.com also has the WattsUp meter, 4-60V, 0-100A. I've used them on electric bikes. And they mention the Turnigy meter, scroll down. These two look very similar - anyone know if they are identical except for different labels and/or cases?
http://www.amazon.com/Watts-Meter-An...watts+up+meter
This one would be nice if it were not out of stock in the International warehouse.
http://www.hobbyking.com/hobbyking/s...dProduct=28713
It is in stock in the UK and Germany though. Not sure if they can be ordered for delivery to the US. I like the backlit screen. The standard Watt's Up, which costs more, is not backlit and can be hard to read unless the ambient lighting is good.

Gord
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Old Oct 16, 2012, 03:02 PM
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Kit in stock.

I have noticed that the kit is shown in stock. It includes the motor but no servos or ESC. After reading some of the recent reports about failing servos, and knowing I will want to use 4S batteries in time and probably a stronger motor as well, I have decided to go with the kit. Glad I waited!

Gord
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Old Oct 16, 2012, 03:07 PM
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Originally Posted by Gordks View Post
I have noticed that the kit is shown in stock. It includes the motor but no servos or ESC. After reading some of the recent reports about failing servos, and knowing I will want to use 4S batteries in time and probably a stronger motor as well, I have decided to go with the kit. Glad I waited!

Gord
Great news!

Unfortunately, the kit is $119 while the ARF is $139.

$20 for six servos and an ESC?

They now have all spare parts for the SSS, also in stock according to their website. When I bought my ARF, all parts were "out of stock" back then.
http://www.bananahobby.com/5-ch-supe...-1727-ctg.html
Unfortunately, you can't buy just the canopy-and-hatch-cover set - I'd love to have one plain and one with camera mounted.
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Last edited by Little-Acorn; Oct 16, 2012 at 04:05 PM.
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