??How to increase thrust??

[Bill]

Hi all,

I need to increase the amount of thrust I am getting from my
propeller. I am limited in the fact that I do not want to change my
propeller or gear ratio. So to my best knowledge, I have the
following options:

(1) The motor I am using is a Mabuchi HV motor. I think I can switch
to a Mabuchi LV motor and get more thrust with less flying time?
http://www.toytx.com/1015vmic.html

(2) I am currently using one Li-Poly battery (4.2V, 135mAh) to power
my RFFS-100 receiver and motor. I think I could hook up *two* Li-Poly
batteries in series to increase the current to my motor?

(3) Any additional options?

I am just wondering if both of these are feasible? If so, which one
would you all recommend?

Thanks in advance,
-Bill

[Philip Martin]

"Bill" <weg22@drexel.edu> wrote in message
news:6b5f5a37.0312031353.189fd3e2@posting.google.c om...
> Hi all,
>
> I need to increase the amount of thrust I am getting from my
> propeller. I am limited in the fact that I do not want to change my
> propeller or gear ratio. So to my best knowledge, I have the
> following options:
>
> (1) The motor I am using is a Mabuchi HV motor. I think I can switch
> to a Mabuchi LV motor and get more thrust with less flying time?
> http://www.toytx.com/1015vmic.html
>
> (2) I am currently using one Li-Poly battery (4.2V, 135mAh) to power
> my RFFS-100 receiver and motor. I think I could hook up *two* Li-Poly
> batteries in series to increase the current to my motor?
>
> (3) Any additional options?
>
> I am just wondering if both of these are feasible? If so, which one
> would you all recommend?
>
> Thanks in advance,
> -Bill

Propeller??!!! Not on our birds bill!

That motor looks like its for only 2.4v!

If you put your batteries in series you will only have the same current
available, but double the voltage! What you need to do is put the batteries
in parallel:o)

Phil Martin.



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[Philip Martin]

"Bill" <weg22@drexel.edu> wrote in message
news:6b5f5a37.0312031353.189fd3e2@posting.google.c om...
> Hi all,
>
> I need to increase the amount of thrust I am getting from my
> propeller. I am limited in the fact that I do not want to change my
> propeller or gear ratio. So to my best knowledge, I have the
> following options:
>
> (1) The motor I am using is a Mabuchi HV motor. I think I can switch
> to a Mabuchi LV motor and get more thrust with less flying time?
> http://www.toytx.com/1015vmic.html
>
> (2) I am currently using one Li-Poly battery (4.2V, 135mAh) to power
> my RFFS-100 receiver and motor. I think I could hook up *two* Li-Poly
> batteries in series to increase the current to my motor?
>
> (3) Any additional options?
>
> I am just wondering if both of these are feasible? If so, which one
> would you all recommend?
>
> Thanks in advance,
> -Bill

Propeller??!!! Not on our birds bill!

That motor looks like its for only 2.4v!

If you put your batteries in series you will only have the same current
available, but double the voltage! What you need to do is put the batteries
in parallel:o)

Phil Martin.



---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.547 / Virus Database: 340 - Release Date: 02/12/2003

[david]

Unless you change the prop. you'll be hard pushed to change thrust per se.

Youy can increase the revs by upping the voltage but with an electric motor
particularly, you only really increase thrust by drawing more current. You
draw more current by making it work harder, and you do THAT by increasing
pitch or diameter.

But as another poster says, this is a helicopter ng, not fixed wing!!

David

"Bill" <weg22@drexel.edu> wrote in message
news:6b5f5a37.0312031353.189fd3e2@posting.google.c om...
> Hi all,
>
> I need to increase the amount of thrust I am getting from my
> propeller. I am limited in the fact that I do not want to change my
> propeller or gear ratio. So to my best knowledge, I have the
> following options:
>
> (1) The motor I am using is a Mabuchi HV motor. I think I can switch
> to a Mabuchi LV motor and get more thrust with less flying time?
> http://www.toytx.com/1015vmic.html
>
> (2) I am currently using one Li-Poly battery (4.2V, 135mAh) to power
> my RFFS-100 receiver and motor. I think I could hook up *two* Li-Poly
> batteries in series to increase the current to my motor?
>
> (3) Any additional options?
>
> I am just wondering if both of these are feasible? If so, which one
> would you all recommend?
>
> Thanks in advance,
> -Bill

[david]

Unless you change the prop. you'll be hard pushed to change thrust per se.

Youy can increase the revs by upping the voltage but with an electric motor
particularly, you only really increase thrust by drawing more current. You
draw more current by making it work harder, and you do THAT by increasing
pitch or diameter.

But as another poster says, this is a helicopter ng, not fixed wing!!

David

"Bill" <weg22@drexel.edu> wrote in message
news:6b5f5a37.0312031353.189fd3e2@posting.google.c om...
> Hi all,
>
> I need to increase the amount of thrust I am getting from my
> propeller. I am limited in the fact that I do not want to change my
> propeller or gear ratio. So to my best knowledge, I have the
> following options:
>
> (1) The motor I am using is a Mabuchi HV motor. I think I can switch
> to a Mabuchi LV motor and get more thrust with less flying time?
> http://www.toytx.com/1015vmic.html
>
> (2) I am currently using one Li-Poly battery (4.2V, 135mAh) to power
> my RFFS-100 receiver and motor. I think I could hook up *two* Li-Poly
> batteries in series to increase the current to my motor?
>
> (3) Any additional options?
>
> I am just wondering if both of these are feasible? If so, which one
> would you all recommend?
>
> Thanks in advance,
> -Bill