Another Update - NiMH and NiCad in same plane....

Another Update - NiMH and NiCad in same plane....

Post by Jim Whi » Mon, 21 Jun 1999 04:00:00



well, it's fathers day, and my daughter wants to take me to brunch, my
wife is taking me to dinner, si instead of flying today, I'll be
getting fat...

here's an interesting tidbit....  I put the 4 packs on c/10 charge,
and charged them for 10 hours... then, I continued and monitored the
cells by occasionally touching them with my hand, and terminated the
charges when I just percieved some self heating.... not hot, just
barely warmer than room temp (percieved by touching various other
non-metalic objects)....  the NiCads were on for just about 12 hours,
the NiMH's, unfortunately, I lost track of, since somewhere during the
first ten hours, a clip lead fell of... so the NiMH charge was
terminated at the same "perception of warmth point" as the NiCads, but
I don't know how long.... somewhere between 10 and 14 hours, tho....
anyway, the NiCads are discharging as I write, but the NiMH's
discharged at 2:11 minutes, whereas with a 14 hour overcharge (where
they got quite warm), they went 2:14 minutes.... sounds to me like a
simple thermal detector just taped to the side of a pack will give a
very good end of charge indication and save us from cooking our
battery packs....  I envision wiring this thing up to the ground
(black) and signal (white) leads of a standard 3 pin connector and
making a simple thermal switch to switch off the charger....  then
maybe we can investigate slightly higher charge rates...  I got a
flyer in the mail from an electronics distributor that has some NiMH
1200 mAH AA cells that can take a 1200 mA charge.... $3/cell ... will
order some this week...

Jim White
AMA 2466
WB2WOY
WPMPA/BCF/PFC
SouthShoreSoftware
Treasure Island, FL

 
 
 

Another Update - NiMH and NiCad in same plane....

Post by Jim » Mon, 21 Jun 1999 04:00:00


Care to share the number and Ph. number of that distributor with the $3
NiMH's?

Jim


Quote:

> well, it's fathers day, and my daughter wants to take me to brunch, my
> wife is taking me to dinner, si instead of flying today, I'll be
> getting fat...

> here's an interesting tidbit....  I put the 4 packs on c/10 charge,
> and charged them for 10 hours... then, I continued and monitored the
> cells by occasionally touching them with my hand, and terminated the
> charges when I just percieved some self heating.... not hot, just
> barely warmer than room temp (percieved by touching various other
> non-metalic objects)....  the NiCads were on for just about 12 hours,
> the NiMH's, unfortunately, I lost track of, since somewhere during the
> first ten hours, a clip lead fell of... so the NiMH charge was
> terminated at the same "perception of warmth point" as the NiCads, but
> I don't know how long.... somewhere between 10 and 14 hours, tho....
> anyway, the NiCads are discharging as I write, but the NiMH's
> discharged at 2:11 minutes, whereas with a 14 hour overcharge (where
> they got quite warm), they went 2:14 minutes.... sounds to me like a
> simple thermal detector just taped to the side of a pack will give a
> very good end of charge indication and save us from cooking our
> battery packs....  I envision wiring this thing up to the ground
> (black) and signal (white) leads of a standard 3 pin connector and
> making a simple thermal switch to switch off the charger....  then
> maybe we can investigate slightly higher charge rates...  I got a
> flyer in the mail from an electronics distributor that has some NiMH
> 1200 mAH AA cells that can take a 1200 mA charge.... $3/cell ... will
> order some this week...

> Jim White
> AMA 2466
> WB2WOY
> WPMPA/BCF/PFC
> SouthShoreSoftware
> Treasure Island, FL


 
 
 

Another Update - NiMH and NiCad in same plane....

Post by Jim Whi » Mon, 21 Jun 1999 04:00:00


Quote:

>well, it's fathers day, and my daughter wants to take me to brunch, my
>wife is taking me to dinner, si instead of flying today, I'll be
>getting fat...

>here's an interesting tidbit....  I put the 4 packs on c/10 charge,
>and charged them for 10 hours... then, I continued and monitored the
>cells by occasionally touching them with my hand, and terminated the
>charges when I just percieved some self heating.... not hot, just
>barely warmer than room temp (percieved by touching various other
>non-metalic objects)....  the NiCads were on for just about 12 hours,
>the NiMH's, unfortunately, I lost track of, since somewhere during the
>first ten hours, a clip lead fell of... so the NiMH charge was
>terminated at the same "perception of warmth point" as the NiCads, but
>I don't know how long.... somewhere between 10 and 14 hours, tho....
>anyway, the NiCads are discharging as I write, but the NiMH's
>discharged at 2:11 minutes, whereas with a 14 hour overcharge (where
>they got quite warm), they went 2:14 minutes.... sounds to me like a
>simple thermal detector just taped to the side of a pack will give a
>very good end of charge indication and save us from cooking our
>battery packs....  I envision wiring this thing up to the ground
>(black) and signal (white) leads of a standard 3 pin connector and
>making a simple thermal switch to switch off the charger....  then
>maybe we can investigate slightly higher charge rates...  I got a
>flyer in the mail from an electronics distributor that has some NiMH
>1200 mAH AA cells that can take a 1200 mA charge.... $3/cell ... will
>order some this week...

as for the Nicads:

Pack            Disch: OverCharge       Disch: "Warm"Charge
  #1                    2:10                    2:05
  #2                    2:09                    2:04

...interseting....

Jim White
AMA 2466
WB2WOY
WPMPA/BCF/PFC
SouthShoreSoftware
Treasure Island, FL

 
 
 

Another Update - NiMH and NiCad in same plane....

Post by Jim Whi » Mon, 21 Jun 1999 04:00:00


Quote:

>Care to share the number and Ph. number of that distributor with the $3
>NiMH's?

>Jim

Hosfelt Electronics, Inc.
2700 Sunset Blvd.
Steubenville, Ohio  43952-1158

1-800-524-6464
1-740-264-6464

PN              1-9     10-99   100-499         500+
33-149          $2.99   $2.79   $2.65           $2.50

note that the picture shows no tabs....  sooooo.... you're gonna have
to find someone to weld them, or, you can try soldering them, but
don't let Red know !!  fortunately, I have acces to a spot welder,
just need to carve up an appropriate probe to make 4 welds per tab....

OBTW, they have a nice 104 key Windows keyboard with functioning caps
keys for $4.95... PN 20-155    :>)

Jim White
AMA 2466
WB2WOY
WPMPA/BCF/PFC
SouthShoreSoftware
Treasure Island, FL

 
 
 

Another Update - NiMH and NiCad in same plane....

Post by Red Scholefiel » Mon, 21 Jun 1999 04:00:00


Quote:

> note that the picture shows no tabs....  sooooo.... you're gonna have
> to find someone to weld them, or, you can try soldering them, but
> don't let Red know !!

I have no problem with people $oldering directy to Ni-Cd$. They are $ome
of my be$t high volume cu$tomer$, I've even been thinking of giving a
$mall di$count to people that do thi$.

Red $

        Red'$ R/C Battery Clinic

    URL = http://yoda.fdt.net/~red$cho

 
 
 

Another Update - NiMH and NiCad in same plane....

Post by Jim Whi » Mon, 21 Jun 1999 04:00:00


Red, you crack me up !!!!  :>)

Quote:


>> note that the picture shows no tabs....  sooooo.... you're gonna have
>> to find someone to weld them, or, you can try soldering them, but
>> don't let Red know !!

>I have no problem with people $oldering directy to Ni-Cd$. They are $ome
>of my be$t high volume cu$tomer$, I've even been thinking of giving a
>$mall di$count to people that do thi$.

>Red $

>        Red'$ R/C Battery Clinic

>    URL = http://yoda.fdt.net/~red$cho

Jim White
AMA 2466
WB2WOY
WPMPA/BCF/PFC
SouthShoreSoftware
Treasure Island, FL
 
 
 

Another Update - NiMH and NiCad in same plane....

Post by Red Scholefiel » Tue, 22 Jun 1999 04:00:00


Sounds like you are associating me with, or calling me dumb thumbs. This
is exactly what my lawyer has been looking for (in lieu of a real case)
since he moved to Mexico.

Red Scholefield - AMA 951 IMAA 18939

Quote:

> Red, you crack me up !!!!  :>)

 
 
 

Another Update - NiMH and NiCad in same plane....

Post by Jim Whi » Tue, 22 Jun 1999 04:00:00


anyone who can come up with clever posts like that is no "dumb
thumb"....  besides... I'd never want to get on your shit list... you
guys have the best hamburgers in the state.... !!!!

Quote:

>Sounds like you are associating me with, or calling me dumb thumbs. This
>is exactly what my lawyer has been looking for (in lieu of a real case)
>since he moved to Mexico.

>Red Scholefield - AMA 951 IMAA 18939


>> Red, you crack me up !!!!  :>)

Jim White
AMA 2466
WB2WOY
WPMPA/BCF/PFC
SouthShoreSoftware
Treasure Island, FL
 
 
 

Another Update - NiMH and NiCad in same plane....

Post by Red Scholefiel » Tue, 22 Jun 1999 04:00:00


Quote:

> anyone who can come up with clever posts like that is no "dumb
> thumb"....  besides... I'd never want to get on your shit list... you
> guys have the best hamburgers in the state.... !!!!

You mean you really like our Bambiburgers?

Red Scholefield - AMA 951 IMAA 18939

 
 
 

Another Update - NiMH and NiCad in same plane....

Post by Jim Whi » Wed, 23 Jun 1999 04:00:00


Quote:


>> anyone who can come up with clever posts like that is no "dumb
>> thumb"....  besides... I'd never want to get on your shit list... you
>> guys have the best hamburgers in the state.... !!!!

>You mean you really like our Bambiburgers?

>Red Scholefield - AMA 951 IMAA 18939

HEY !!!  "Honest" Ed told me they were Boar-Burgers !!!

Jim White
AMA 2466
WB2WOY
WPMPA/BCF/PFC
SouthShoreSoftware
Treasure Island, FL

 
 
 

Another Update - NiMH and NiCad in same plane....

Post by Red Scholefiel » Wed, 23 Jun 1999 04:00:00


Quote:

> >HEY !!!  "Honest" Ed told me they were Boar-Burgers !!!

> ...or whatever fell beneath the wheels of passing vehicles.

We are very careful to pick out all the little broken bones, shell mater
(Texas Possums - them Amirillos), asphalt, etc. And it is fresh, as in
Florida the early bird gets the good stuff.

Red Scholefield - AMA 951 IMAA 18939

 
 
 

Another Update - NiMH and NiCad in same plane....

Post by STEVEN K SCHIFFNE » Wed, 23 Jun 1999 04:00:00


Red, so what your saying is
A)you like people who run RC cars and...
B) you take out the best part of the 'dillo(the bones and shell)

Quote:

> > >HEY !!!  "Honest" Ed told me they were Boar-Burgers !!!

> > ...or whatever fell beneath the wheels of passing vehicles.

> We are very careful to pick out all the little broken bones, shell mater
> (Texas Possums - them Amirillos), asphalt, etc.

 
 
 

Another Update - NiMH and NiCad in same plane....

Post by Red Scholefiel » Thu, 24 Jun 1999 04:00:00


Quote:

> Red, so what your saying is
> A)you like people who run RC cars and...

What are R/C cars?

Quote:
> B) you take out the best part of the 'dillo(the bones and shell)

How do you think we keep the cooks happy. You got to offer
some benefits. They get the bones and shell.

Red

 
 
 

Another Update - NiMH and NiCad in same plane....

Post by STEVEN K SCHIFFNE » Fri, 25 Jun 1999 04:00:00


well if you go to rec.models.rc.land you will find many of us over there who
think that nitro or fuel is a waste (not me  I was weaned on 30%) the
electric drag cars in TOP FUEL are getting in the sub 3sec. range and super
speedway with around 18 100mah
batteries are getting 95mph+ on a oval (110mph+ in straightaways) so there
are few of them who really put the batteries thru the wringer. keith
p.s. my favorite is racoon and 'dillo stew when the racoon goes to eat dead
'dillo hehehe

Quote:
> What are R/C cars
> How do you think we keep the cooks happy. You got to offer
> some benefits. They get the bones and shell.
> works for me red

 
 
 

Another Update - NiMH and NiCad in same plane....

Post by aur.. » Fri, 25 Jun 1999 04:00:00


Quote:

> well if you go to rec.models.rc.land you will find many of us over there who
> think that nitro or fuel is a waste (not me  I was weaned on 30%) the
> electric drag cars in TOP FUEL are getting in the sub 3sec. range and super
> speedway with around 18 100mah
> batteries are getting 95mph+ on a oval (110mph+ in straightaways) so there
> are few of them who really put the batteries thru the wringer. keith
> p.s. my favorite is racoon and 'dillo stew when the racoon goes to eat dead
> 'dillo hehehe

But can you get 20 minutes plus duration per run (flight)?

Vince

--
I started out with nothing, and I still have most of it left