EDF Problems in SR71 Build.
- Phil Wood
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09 Apr 2012 06:56 #91
by Phil Wood
I just own the forum .... you guys make it great thanks.
Replied by Phil Wood on topic Re: EDF Problems in SR71 Build.
Please photograph the battery pack connected up with the receiver and its battery pack .... we'll get to the bottom of this!
Pol.
Pol.
I just own the forum .... you guys make it great thanks.
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- Garry Pollard
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09 Apr 2012 07:05 #92
by Garry Pollard
Replied by Garry Pollard on topic Re: EDF Problems in SR71 Build.
Hi BB
A thought has occured to me. Are you looking at GC site, at the 6s lipos you have bought, and going on what is stated on that advert for them that says 22.2v. This figure will be the voltage that they will be when you recieve them. That is NOT the fully charged figure. The fully charged figure is 4.20 v X6 =25.20v. The shipping voltage is 3.7v X6= 22.20 v. So , when you take them off charge the pack should read 25.20v. So there is no need to try and reduce it to 22.20v, which you appear to be doing.
Follow Erics wiring drawing, and you should be on the way to success.
Garry
Remember a 3s lipo is 12.60v 4s lipo 16.80 v 6s lipo is 25.20v FULLY CHARGED ie 4.20 v per cell
A thought has occured to me. Are you looking at GC site, at the 6s lipos you have bought, and going on what is stated on that advert for them that says 22.2v. This figure will be the voltage that they will be when you recieve them. That is NOT the fully charged figure. The fully charged figure is 4.20 v X6 =25.20v. The shipping voltage is 3.7v X6= 22.20 v. So , when you take them off charge the pack should read 25.20v. So there is no need to try and reduce it to 22.20v, which you appear to be doing.
Follow Erics wiring drawing, and you should be on the way to success.
Garry
Remember a 3s lipo is 12.60v 4s lipo 16.80 v 6s lipo is 25.20v FULLY CHARGED ie 4.20 v per cell
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- Phil Wood
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09 Apr 2012 07:35 #93
by Phil Wood
I just own the forum .... you guys make it great thanks.
Replied by Phil Wood on topic Re: EDF Problems in SR71 Build.
This should be simple ..... BB is using some great gear that he's paid a fortune for.... should be able to plug this in & let it run!
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- THE BLACKBIRD
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09 Apr 2012 12:26 - 09 Apr 2012 12:29 #94
by THE BLACKBIRD
Replied by THE BLACKBIRD on topic Re: EDF Problems in SR71 Build.
Ok i tried again this morning but the same thing happens, the escs flash telling me the voltage is either high or low, i tried them both together and indipendently,the receiver is working i connected a servo its ok.
The readings on the wat meter
switched on and standing ( it will not run ) on 10s
0.00A----41.42V----0.0W----0.00AH
PROGRAMER
1----BRAKE OFF
2----BATTERY TYPE----LIPO
3----Cut Off Mode----SOFT
4----VOLTAGE PROTECTION----MIDDLE
5----START MODE----SOFT
6----TIMING MODE----5
7----GOVENER MODE----OFF
8----RESERVED
9----PWM FREQUENCY 12khz
10---BEC. VOLTAGE----5.25
11---RESERVED
12---No OF LIPO CELLS----10----37.0V
lipo no 1, 6S----92%----24.570V----cells---4.09, 4.09, 4.09, 4.09, 4.09, 4.08
lipo no 2 6s----91%----24.570v----cells---4.09, 4.10, 4.10, 4.11, 4,10, 4.08
lipo no 3 4s----98%----16.700v----cells---4.17, 4.17, 4.17, 4.19
lipo no 4 4s----99%----16.700v----cells---4.19, 4.19, 4.20, 4.20
lipos 1 and 3 connected together and 2and 4
The readings on the wat meter
switched on and standing ( it will not run ) on 10s
0.00A----41.42V----0.0W----0.00AH
PROGRAMER
1----BRAKE OFF
2----BATTERY TYPE----LIPO
3----Cut Off Mode----SOFT
4----VOLTAGE PROTECTION----MIDDLE
5----START MODE----SOFT
6----TIMING MODE----5
7----GOVENER MODE----OFF
8----RESERVED
9----PWM FREQUENCY 12khz
10---BEC. VOLTAGE----5.25
11---RESERVED
12---No OF LIPO CELLS----10----37.0V
lipo no 1, 6S----92%----24.570V----cells---4.09, 4.09, 4.09, 4.09, 4.09, 4.08
lipo no 2 6s----91%----24.570v----cells---4.09, 4.10, 4.10, 4.11, 4,10, 4.08
lipo no 3 4s----98%----16.700v----cells---4.17, 4.17, 4.17, 4.19
lipo no 4 4s----99%----16.700v----cells---4.19, 4.19, 4.20, 4.20
lipos 1 and 3 connected together and 2and 4
Last edit: 09 Apr 2012 12:29 by THE BLACKBIRD.
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- Klipkopwildlife
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09 Apr 2012 12:44 - 09 Apr 2012 13:41 #95
by Klipkopwildlife
Do it now, you may never get another chance
Replied by Klipkopwildlife on topic Re: EDF Problems in SR71 Build.
Set 1 & 3 = 41.23volts, set 2 & 4 = 41.38volts. Both sets fully charged. Do the fans run on 6S? I'm sure you've said this before, but I can't find it in the last 6 posts.
I'd like you to start from scratch BB.
6s
ESC
RX
Motor without fan (contrary to common belief you will not damage anything!)
1/
TX on, throttle full, trim neutral
Motor connected to ESC, 3 heavy wires
Connect 6S battery
Connect Bec plug to RX throttle
Nothing should happen.
2/
Reduce throttle slowly to zero.
If motor starts, STOP, disconnect main battery, TX off and reverse throttle channel.
Go back to 1/
3/
The motor didn't start this time! Now increase throttle slowly, motor should start and spool up.
So far so good. Now disconnect and reconnect in 10S format, go through the same sequence, hopefully it works.
4/
At this point I would test every single item from the other set in the working setup.
5/
Connect the Watt meter, even at zero throttle it should show a small amount of (quiescent) current. Now spool up (without fan) and see what happens.
6/
If you've got to this point we can now mount the fan (with Loctite) and run up. I would say about half throttle, only try full power when the voltage has sagged to 37volts.
Tell me where this test sequence stalls please BB
I'd like you to start from scratch BB.
6s
ESC
RX
Motor without fan (contrary to common belief you will not damage anything!)
1/
TX on, throttle full, trim neutral
Motor connected to ESC, 3 heavy wires
Connect 6S battery
Connect Bec plug to RX throttle
Nothing should happen.
2/
Reduce throttle slowly to zero.
If motor starts, STOP, disconnect main battery, TX off and reverse throttle channel.
Go back to 1/
3/
The motor didn't start this time! Now increase throttle slowly, motor should start and spool up.
So far so good. Now disconnect and reconnect in 10S format, go through the same sequence, hopefully it works.
4/
At this point I would test every single item from the other set in the working setup.
5/
Connect the Watt meter, even at zero throttle it should show a small amount of (quiescent) current. Now spool up (without fan) and see what happens.
6/
If you've got to this point we can now mount the fan (with Loctite) and run up. I would say about half throttle, only try full power when the voltage has sagged to 37volts.
Tell me where this test sequence stalls please BB
Do it now, you may never get another chance
Last edit: 09 Apr 2012 13:41 by Klipkopwildlife.
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- THE BLACKBIRD
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09 Apr 2012 15:34 #96
by THE BLACKBIRD
Replied by THE BLACKBIRD on topic Re: EDF Problems in SR71 Build.
Hi Klipy
ran it through as per instructions, the motor in no. 3 did not start up, still getting high or low voltage signal from esc
No.1 lipo reading on 6s ---- 24.465v
cells---4.8, 4.8, 4.8, 4.8, 4.8, 4.7
programed the esc to 6s and also to automatic cell count
ran it through as per instructions, the motor in no. 3 did not start up, still getting high or low voltage signal from esc
No.1 lipo reading on 6s ---- 24.465v
cells---4.8, 4.8, 4.8, 4.8, 4.8, 4.7
programed the esc to 6s and also to automatic cell count
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- Klipkopwildlife
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09 Apr 2012 15:53 #97
by Klipkopwildlife
Do it now, you may never get another chance
Replied by Klipkopwildlife on topic Re: EDF Problems in SR71 Build.
Those cell voltages seem suspiciously high, can you recheck using one of the 4S?
Do it now, you may never get another chance
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09 Apr 2012 16:58 #98
by THE BLACKBIRD
Replied by THE BLACKBIRD on topic Re: EDF Problems in SR71 Build.
just ran the other 6s on a new plane with the remaining good scorpion motor and 60amp esc rated up to 26v it ran great
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- Klipkopwildlife
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09 Apr 2012 17:09 #99
by Klipkopwildlife
Do it now, you may never get another chance
Replied by Klipkopwildlife on topic Re: EDF Problems in SR71 Build.
Great, now you've got a setup that works, now you can change things one by one until you find the problem.
Do it now, you may never get another chance
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- Garry Pollard
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09 Apr 2012 21:00 #100
by Garry Pollard
Much higher than I have ever seen.
Garry
Replied by Garry Pollard on topic Re: EDF Problems in SR71 Build.
Klipkopwildlife wrote: Those cell voltages seem suspiciously high, can you recheck using one of the 4S?
Much higher than I have ever seen.
Garry
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14 Apr 2012 00:13 #101
by THE BLACKBIRD
Replied by THE BLACKBIRD on topic Re: EDF Problems in SR71 Build.
I put the power plugs on the Thunder Power lipos this morning and just out of interest as i dont have any testing sockets for the wat meter that i use i connected 2 of them up to make 12s and put the to the fans, got the same result as im gettung with the Gens Ace lipos, the escs telling me the voltage to high or to low.
I thought lipos came out new at about 50% charged, so it should have been ok.
Im useing the Gens Ace 6s and lipos in the new plane i have put together this week with a 60a Hobbywing esc and the remaining scorpion motor with a prop on it from the sr, it go's well, getting lots of thrust.
Getting to the stage with the sr where i will bin the whole bloody thing and chuck it in the shed and get on with something else, i dont need all this pissing about.
I thought lipos came out new at about 50% charged, so it should have been ok.
Im useing the Gens Ace 6s and lipos in the new plane i have put together this week with a 60a Hobbywing esc and the remaining scorpion motor with a prop on it from the sr, it go's well, getting lots of thrust.
Getting to the stage with the sr where i will bin the whole bloody thing and chuck it in the shed and get on with something else, i dont need all this pissing about.
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- Eric
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14 Apr 2012 01:28 - 14 Apr 2012 01:32 #102
by Eric
if you are calm and collected when all about you are going berserk - you've missed something important!
Replied by Eric on topic Re: EDF Problems in SR71 Build.
BB - you must stop guessing what is happening. You cannot see electricity. You must get that wattmeter in line, and SEE what amps and volts you have coming out of the battery pack.
From your last post, you don't even know if you have too many, or not enough volts!
If you insist on experimenting blind, Try running the fan on one 6S pack. If it now works - or doesn't, unplug that pack and try the other one.
If the fan runs on each one of the packs, separately, there is either a connection in the wrong place, or the speedo can't cope.
From your last post, you don't even know if you have too many, or not enough volts!
If you insist on experimenting blind, Try running the fan on one 6S pack. If it now works - or doesn't, unplug that pack and try the other one.
If the fan runs on each one of the packs, separately, there is either a connection in the wrong place, or the speedo can't cope.
if you are calm and collected when all about you are going berserk - you've missed something important!
Last edit: 14 Apr 2012 01:32 by Eric. Reason: added a bit
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14 Apr 2012 04:06 - 14 Apr 2012 04:08 #103
by THE BLACKBIRD
Replied by THE BLACKBIRD on topic Re: EDF Problems in SR71 Build.
i had the wat meter on it and posted the readings on here, it will not run on any pack, keep getting the same message from the esc
Last edit: 14 Apr 2012 04:08 by THE BLACKBIRD.
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- Eric
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14 Apr 2012 04:37 #104
by Eric
if you are calm and collected when all about you are going berserk - you've missed something important!
Replied by Eric on topic Re: EDF Problems in SR71 Build.
You posted that you haven't got the plugs, so how have you tested everything if youj can't plug them in?
if you are calm and collected when all about you are going berserk - you've missed something important!
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15 Apr 2012 19:01 #105
by THE BLACKBIRD
Replied by THE BLACKBIRD on topic Re: EDF Problems in SR71 Build.
Had another try with the fans today this was the set up
2 lipos connected together to make 8s, these lipos had never been on this rigg before, both lipos were Tipple from Giant Cod
Lipo No 1 4s 4500mh - 100% charged - 16.810 volts -- cells - 4.20, 4.19, 4.20, 4.22
Lipo No 2 4s 2300mh - 90% charged - 16.310 volts -- cells - 4.07, 4.06, 4.08, 4.09
Programer settings
1 --- BRAKE MODE -- OFF
2 --- BATTERY TYPE -- LIPO
3 --- CUT OFF MODE-- SOFT CUT
4 --- VOLTAGE PROTECTION -- MIDDLE
5 --- START MODE -- SOFT
6 --- TIMING MODE -- 5
7 --- GOVENER MODE -- OFF
8 --- RESERVED
9 --- PWM FREQUENCY -- 12KHZ
10 -- BEC VOLTAGE -- 5.25 VOLTS
11 -- RESERVED
12 -- LIPO CELLS -- 8 CELLS - 29.6 VOLTS
STILL NO JOY, Getting exactly the same results as with everything else i have tried
from the escs, both of them wired one at a time to the lipos, giving a to high or to low voltage reading.
With everything standing the watt meter reading was
0.00AMPS --- 0.00 VOLTS --- 0.0 WATTS --- 0.000 AH
2 lipos connected together to make 8s, these lipos had never been on this rigg before, both lipos were Tipple from Giant Cod
Lipo No 1 4s 4500mh - 100% charged - 16.810 volts -- cells - 4.20, 4.19, 4.20, 4.22
Lipo No 2 4s 2300mh - 90% charged - 16.310 volts -- cells - 4.07, 4.06, 4.08, 4.09
Programer settings
1 --- BRAKE MODE -- OFF
2 --- BATTERY TYPE -- LIPO
3 --- CUT OFF MODE-- SOFT CUT
4 --- VOLTAGE PROTECTION -- MIDDLE
5 --- START MODE -- SOFT
6 --- TIMING MODE -- 5
7 --- GOVENER MODE -- OFF
8 --- RESERVED
9 --- PWM FREQUENCY -- 12KHZ
10 -- BEC VOLTAGE -- 5.25 VOLTS
11 -- RESERVED
12 -- LIPO CELLS -- 8 CELLS - 29.6 VOLTS
STILL NO JOY, Getting exactly the same results as with everything else i have tried
from the escs, both of them wired one at a time to the lipos, giving a to high or to low voltage reading.
With everything standing the watt meter reading was
0.00AMPS --- 0.00 VOLTS --- 0.0 WATTS --- 0.000 AH
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