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05-16-2010, 05:03 PM
Replies: 19
Views: 1,785
Posted By dmarko

Update.. The problem was the Common Sense Micro...

Update..
The problem was the Common Sense Micro Controlled Balance charger regarding the appearance of un-even cells.

After trying to charge (2) new Turnigy 2200 (3s) batteries and having the...
05-13-2010, 10:24 PM
Replies: 87
Views: 39,958
Posted By dmarko

'FLY RC" magazine June 2010 Issue Page 60 ...

'FLY RC" magazine June 2010 Issue Page 60

Article by Scott Stoops [email protected]

has an article on Lipo care and storage.
Picture right in the middle shows a puffed battery and the...
05-12-2010, 12:26 AM
Replies: 10
Views: 2,464
Posted By dmarko

Off Topic...Lipos rigged for Power Tools

This might be a silly question.

Can Lipo batteries be rigged to run various power tools that are normally AC driven?

For example, I have an corded reicprocating saw but will be needing a...
05-12-2010, 12:15 AM
Replies: 34
Views: 5,781
Posted By dmarko

also let me add this.. I had purchased (2)...

also let me add this..

I had purchased (2) lipos about 1.5 years ago from Ebay. 2200mah 3cell from Hong Kong. Never used them. Cell balance was fine and storage was at 3.85 volts per cell.
I had...
05-12-2010, 12:07 AM
Replies: 34
Views: 5,781
Posted By dmarko

Ok... My 2 cents here. This is my personal view...

Ok... My 2 cents here.
This is my personal view on the original topic.

First, I recently decided to move my lipos (4 2200mah 3 cells) into my house from the garage since I live in Florida and...
Forum: Beginners
05-07-2010, 05:40 PM
Replies: 39
Views: 4,671
Posted By dmarko

Slowstick

Slowstick
Forum: Beginners
05-07-2010, 05:38 PM
Replies: 39
Views: 4,671
Posted By dmarko

Just wait til you get the urge to put ailerons...

Just wait til you get the urge to put ailerons (and maybe even flaps) on her.

I think I had maybe 3 flights on my stock SS before I converted her over to Brushless (Eflite 480 outrunner) running...
05-04-2010, 09:49 PM
Replies: 25
Views: 4,114
Posted By dmarko

Matt / Larry Interesting info. What is...

Matt / Larry

Interesting info.
What is sad is that some well known lipo manufacturers still have this "salt water" method of total lipo depletion in their literature. I won't name names since...
05-03-2010, 02:51 PM
Replies: 1
Views: 1,042
Posted By dmarko

Turnigy Accucel 6 or Triton 2

Please respond if you have either one of these chargers for sale in good condition. Thanks
05-03-2010, 04:15 AM
Replies: 19
Views: 1,785
Posted By dmarko

Larry . Thank You for the valuable info. It...

Larry .
Thank You for the valuable info.
It is greatly appreciated.
I just ordered 2 new Turnigy packs and will run that unknown pack down to "0" volts and discard. Now I am looking for a good...
05-02-2010, 11:39 PM
Replies: 19
Views: 1,785
Posted By dmarko

so what you are saying is that even an old...

so what you are saying is that even an old battery on its last legs will still charge out to (all 3 cells) to 4.2v.
So it is an unseen (or unmeasurable) attrtibute that causes them to stop working...
05-02-2010, 11:38 PM
Replies: 19
Views: 1,785
Posted By dmarko

Yeah..for sure the charger drops the charging...

Yeah..for sure the charger drops the charging voltage from 2.0 amps down to .5 and then eventually to .2 and then the cells will read ok. The cell that stops at 3.8v stops charging and reads cell ok...
05-02-2010, 07:39 PM
Replies: 4
Views: 1,163
Posted By dmarko

I have an Eflite Wattmeter too. Do you mean...

I have an Eflite Wattmeter too.
Do you mean hook the deans connector (DISCHARGE) side to the wattmeter while charging thru the balance lead?

This is how I charge my batteries.
But again I have...
05-02-2010, 07:35 PM
Replies: 10
Views: 1,719
Posted By dmarko

After destroying 2 (crunched) lipos in a salt...

After destroying 2 (crunched) lipos in a salt water bath yesterday for 4 hours (both were at 11.7 volts), I dried and read 0 volts.
I then proceeded to hack em to death with a machete.
No...
05-02-2010, 07:31 PM
Replies: 19
Views: 1,785
Posted By dmarko

Cliffh and Larry I agree with you both on...

Cliffh and Larry

I agree with you both on your various suggestions.
But other packs do seem to charge just fine.
And, yes, the battery in question does start out full power.
So I am assuming...
05-02-2010, 07:27 PM
Replies: 25
Views: 4,114
Posted By dmarko

Why? I dried the lipos from after removing from...

Why?
I dried the lipos from after removing from the salt bath and put them on the wattmeter and they both read 0 volts before them I hacked them up with the machete.
05-02-2010, 12:40 PM
Replies: 19
Views: 1,785
Posted By dmarko

Thanks Cliff. I was kinda thinking along those...

Thanks Cliff.
I was kinda thinking along those lines too.
Glad to hear your story on your battery.
David
05-02-2010, 03:31 AM
Replies: 25
Views: 4,114
Posted By dmarko

just soaked 2 lipos in salt water bucket today....

just soaked 2 lipos in salt water bucket today. Each were 1300 mah 3s and had 11.7 volts.
After 4 hours of soaking, I put them on the lawn and took a machete to them. No smoke. No fire. No nothing....
05-02-2010, 03:30 AM
Replies: 25
Views: 4,114
Posted By dmarko

just soaked 2 lipos in salt water bucket today....

just soaked 2 lipos in salt water bucket today. Each were 1300 mah 3s and had 11.7 volts.
After 4 hours of soaking, I put them on the lawn and took a machete to them. No smoke. No fire. No nothing....
05-02-2010, 03:13 AM
Replies: 19
Views: 1,785
Posted By dmarko

Lipo maximum cell count....Help

Please advise.
Battery: Thunder Power 2200mah 3s
Condition: 1 year old

Charger: Common Sense Micro controlled Balance Charger

On Full Charge:
Cell1: 3.8
Cell2: 4.2
Cell3: 4.2
05-02-2010, 03:04 AM
Replies: 14
Views: 3,459
Posted By dmarko

It flew like an angel today )

It flew like an angel today )
05-01-2010, 07:13 PM
Replies: 9
Views: 3,502
Posted By dmarko

Wow.. Some of those packs look really bad. I...

Wow.. Some of those packs look really bad.
I just threw 2 1320 Nah (expensive) batteries into the salt solution soak to kill them.
They weren't even close to as crumpled as some above but still...
04-29-2010, 03:59 AM
Replies: 14
Views: 4,579
Posted By dmarko

"Only you...can prevent LIPO fires" Be...

"Only you...can prevent LIPO fires"

Be careful....
04-29-2010, 03:49 AM
Replies: 7
Views: 1,406
Posted By dmarko

It's a stupid way to express things. Who ever...

It's a stupid way to express things. Who ever created this term ? Why not just simply say battery is continous 30A Max Burst 42A as an example..
And state that battery is recommended to be charged...
04-29-2010, 03:43 AM
Replies: 6
Views: 1,574
Posted By dmarko

So true.. 3.36v per cell is hanging on the edge...

So true..
3.36v per cell is hanging on the edge of a cliff with one leg hanging out.
10volts on a 3 cell pack. Keep my LVC at 10.60volts or roughly 3.5vper cell.
04-29-2010, 03:29 AM
Replies: 16
Views: 4,479
Posted By dmarko

There's debate , opinions, and sometimes many...

There's debate , opinions, and sometimes many misconceptions out there on the following questions:
-how long can you keep a lipo fully charged?
-some say weeks..others months..one guy even says a...
04-29-2010, 03:20 AM
Replies: 10
Views: 1,719
Posted By dmarko

be sure to inform the radio shack personnel of...

be sure to inform the radio shack personnel of how dangerous lipos can be.
Not to bad mouth rs employees, but I've noticed they hire alot of people who don't know too much about electronics.
I...
04-26-2010, 03:42 AM
Replies: 12
Views: 11,470
Posted By dmarko

Static Thrust Formula from Watts

I read on the web somewhere that you can expect 0.177075 oz. of static thrust per 1 watt.
That would make a reading at WOT of 140 Watts * 0.177075
= 24.79 ounces of static thrust.

Is this...
04-26-2010, 03:30 AM
Replies: 14
Views: 3,459
Posted By dmarko

I'll keep you posted. I just reverted back to...

I'll keep you posted.
I just reverted back to wire landing gear instead of the skid and hand launch (which I didn't even attempt).
I put the wire gear back to 1/2" before CG . And with the 450...
04-25-2010, 01:50 AM
Replies: 14
Views: 3,459
Posted By dmarko

Gramps.. Thanks for the wheel advice :) ...

Gramps..
Thanks for the wheel advice :)

Regarding a slow prop...please do tell?
Currently I have tried a 10 * 7 but went to a 11 * 4.7.

How many watts should I be at?
AUW is at 27 ounces...
Showing results 1 to 30 of 362
 


 
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