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How do I read my watt meter

Old 03-27-2011, 03:03 AM
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TylerJCooper
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Default How do I read my watt meter

I recently got this watt meter. I connected it to my RIP FunJet and it reads the W (bottom right hand corner) at 495+. What does that mean?
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Old 03-27-2011, 03:08 AM
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Originally Posted by TylerJCooper View Post
I recently got this watt meter. I connected it to my RIP FunJet and it reads the W (bottom right hand corner) at 495+. What does that mean?
thats your Watts


top left corner is your AMPS
top right corner is your VOLTS
bottom right coner is your Watts
bottom left corner is your Amp Hours

Last edited by CHELLIE; 03-27-2011 at 06:33 AM.
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Old 03-27-2011, 03:09 AM
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Have you read the instructions? w=watts, v=volts, a=amperage
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Old 03-27-2011, 03:10 AM
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Duh, that makes sense. I found how to read that amps too. Last question is about the volts. If it is dropping to 8.5 on a 11.1 battery, is that bad?
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Old 03-27-2011, 03:14 AM
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[media]http://www.youtube.com/watch?v=kfs4Bs3H7gw[/media]
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Old 03-27-2011, 03:14 AM
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Originally Posted by CrimzonRider View Post
Have you read the instructions? w=watts, v=volts, a=amperage
You will find that I am notorious for asking simple (or stupid) questions. Most the time I am so confused I don't even trust myself reading. That's why I love Wattflyer!!!!
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Old 03-27-2011, 03:16 AM
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Originally Posted by TylerJCooper View Post
Duh, that makes sense. I found how to read that amps too. Last question is about the volts. If it is dropping to 8.5 on a 11.1 battery, is that bad?
thats 2.83 volts per cell, thats dropping a lot, your LVC will cut off at that voltage, if using a 2.4 radio, use a ubec
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Old 03-27-2011, 03:21 AM
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Originally Posted by CHELLIE View Post
thats 2.83 volts per cell, thats dropping a lot, your LVC will cut off at that voltage, if using a 2.4 radio, use a ubec
That is probably why my motor skips at full throttle sometimes?
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Old 03-27-2011, 03:23 AM
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Originally Posted by TylerJCooper View Post
That is probably why my motor skips at full throttle sometimes?
yes, it very well could be prop down a little
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Old 03-27-2011, 03:24 AM
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Originally Posted by TylerJCooper View Post
You will find that I am notorious for asking simple (or stupid) questions. Most the time I am so confused I don't even trust myself reading. That's why I love Wattflyer!!!!
there are no Stupid Questions, its just plain dumb not to ask questions

what motor, prop, lipo, esc are you using to be drawing 500Watts and how many Amps are you drawing
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Old 03-27-2011, 03:32 AM
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Motor - 3700 kv
ESC - 60 A
Battery -11.1 v 30C (Not sure what the C really does and been trying to find info on the effects that has with putting a system together. I understand it has to do with how much can get pulled off the battery at a time, but not sure what are the practical differences of running a 20C vs a 30C. I know it would drop my volts more with the lower C, but not sure how to know what C rating I should be using)
Prop - APC 4.75x4.75

Meter says I am drawing about 50 amps
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Old 03-27-2011, 03:33 AM
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PS - That video was SUPER helpful. Thanks!!!!!
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Old 03-27-2011, 03:44 AM
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Originally Posted by CHELLIE View Post
thats 2.83 volts per cell, thats dropping a lot, your LVC will cut off at that voltage, if using a 2.4 radio, use a ubec
You have steered me away from HobbyKing ESC, should I also stay away from their ubed?
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Old 03-27-2011, 03:44 AM
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Originally Posted by TylerJCooper View Post
You will find that I am notorious for asking simple (or stupid) questions. Most the time I am so confused I don't even trust myself reading. That's why I love Wattflyer!!!!

Your not askin stupid or simple questions, just you gotta read lol
Sometimes I have to read something 3 or 4 times before it makes sense.
I am here at wattflyer to learn too. Sometimes it is kinda 'CANT SEE THE TREE THROUGH THE FOREST'. All good My simple questions usually have a simple answer that I am trying to hard to complicate!!

have a good one
cr
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Old 03-27-2011, 03:45 AM
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Originally Posted by TylerJCooper View Post
Motor - 3700 kv
ESC - 60 A
Battery -11.1 v 30C (Not sure what the C really does and been trying to find info on the effects that has with putting a system together. I understand it has to do with how much can get pulled off the battery at a time, but not sure what are the practical differences of running a 20C vs a 30C. I know it would drop my volts more with the lower C, but not sure how to know what C rating I should be using)
Prop - APC 4.75x4.75
not enough battery at 1800mah 30C, use a 2250mah 3 cell 40C, use WOT in short burst, the C is the Capacity of the lipo, a 2250mah 40 C is a 90 amp lipo, a 1800mah 30 C rated is a 54 amp lipo, 1.8 amps x 30C =54 amp lipo, 2.25 amps x 40C = 90 amp lipo.
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Old 03-27-2011, 03:49 AM
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Originally Posted by TylerJCooper View Post
You have steered me away from HobbyKing ESC, should I also stay away from their ubed?
heads up rc has a very good UBEC

http://www.headsuprc.com/servlet/the...iversal/Detail

here is a nice 40C lipo for you
http://www.hobbyking.com/hobbyking/s...idProduct=9942
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Old 03-27-2011, 03:49 AM
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That is beautiful. I have read that equation a few times but it never made sense. Now that I have a watt meter and a plane that it applies, it all make sense. Your the best!
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Old 03-27-2011, 03:51 AM
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"By George I think I got it"

Sure explains why my batteries were getting hot. You should have felt the 1300mah 20C.
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Old 03-27-2011, 03:54 AM
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[QUOTE=TylerJCooper;796236]That is beautiful. I have read that equation a few times but it never made sense. Now that I have a watt meter and a plane that it applies, it all make sense. Your the best![/QUOTE]

Of Course Thats what They all Say LOL

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Old 03-27-2011, 03:56 AM
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Originally Posted by CHELLIE View Post
Those are the ticket, however, I use a different connector on my battery and my soldering is getting worst. (Might be the 5 yr old $15 Radio Shack solder gun) Can I order them with different connections?
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Old 03-27-2011, 03:58 AM
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Originally Posted by TylerJCooper View Post
Those are the ticket, however, I use a different connector on my battery and my soldering is getting worst. (Might be the 5 yr old $15 Radio Shack solder gun) Can I order them with different connections?
just solder up a short adapter, that what i did radio shack has a nice soldering gun, get at least a 100 watt soldering gun
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Old 03-27-2011, 04:00 AM
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Originally Posted by TylerJCooper View Post
Those are the ticket, however, I use a different connector on my battery and my soldering is getting worst. (Might be the 5 yr old $15 Radio Shack solder gun) Can I order them with different connections?
tighten the locking nuts on your gun tip, they get loose and will not get the tip hot enough
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Old 03-27-2011, 04:07 AM
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So my 30 watt is not helping? Explains why I have to hold it together for 45-60 seconds. It took me 2 hrs to get the watt meter set-up

How about this one?
http://www.harborfreight.com/180-wat...-gun-4328.html

What type of core do you use?
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Old 03-27-2011, 04:12 AM
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Originally Posted by TylerJCooper View Post
So my 30 watt is not helping? Explains why I have to hold it together for 45-60 seconds. It took me 2 hrs to get the watt meter set-up

How about this one?
http://www.harborfreight.com/180-wat...-gun-4328.html

What type of core do you use?

Your link is no good...I think you're looking at this one...

http://www.harborfreight.com/catalog...=soldering+gun
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Old 03-27-2011, 04:19 AM
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Yep that is the link. Thanks! Any thoughts?
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