Batteries - Robbe EF76 II motor

[Phil Schuman]

A general question about R/C and batteries... land & water

I have an old Robbe EF76 II motor that is installed in a speed boat,
that has been sitting in the basement for maybe 15 years :)

I seem to recall having a battery sleeve
of maybe 8 NiCd cells, probably of sub-c size (9.6v)
with a listed capacity of say 1600mah.
I recently grabbed a small AA pack of 9.6v 1100mah
and tried it out in the old boat.
The boat ran ok....but not with the zip I remember.

Would a 1600mah - 2200mah battery pack perform better,
or is there something about a "larger" physical battery
that can deliver better "peak" demand ???
ie - how would a sub-c 1600mah battery perform
vs a 2200 AA battery pack ?
Phil -

[Kevin Russell]

More volts might your cure your problem according to the Web your motor is
rated at 6 to 12 volts 10 cells will give you 12v but go for Sub C cell as
they have better current rating
Kevin
"Phil Schuman" <pschuman_nospam_me@interserv.com> wrote in message
news:Jtu0c.26221$PY.10754@newssvr26.news.prodigy.c om...
> A general question about R/C and batteries... land & water
>
> I have an old Robbe EF76 II motor that is installed in a speed boat,
> that has been sitting in the basement for maybe 15 years :)
>
> I seem to recall having a battery sleeve
> of maybe 8 NiCd cells, probably of sub-c size (9.6v)
> with a listed capacity of say 1600mah.
> I recently grabbed a small AA pack of 9.6v 1100mah
> and tried it out in the old boat.
> The boat ran ok....but not with the zip I remember.
>
> Would a 1600mah - 2200mah battery pack perform better,
> or is there something about a "larger" physical battery
> that can deliver better "peak" demand ???
> ie - how would a sub-c 1600mah battery perform
> vs a 2200 AA battery pack ?
> Phil -
>
>

[Tachikaze]

Increasing the amperage size of your battery will give you a longer run time, but not faster. As mentioned, increasing your voltage will increase your speed.
Make sure you do not over stress your motor. The Sub C's are a good choice, there are a lot or different configurations out there and they will gilve you the amperage for a long run time.