Electric motor selection

[mike]

This is a bit of a newbie question.
I will start off by explaining what this is for first.
I am taking part in a local engineer's challenge.
The goal of the challenge is to take a cheap ($35 or less) R/C car,
mod it (budget is $150 CND) and race a circuit track and a drag strip
(R/C scale of course).

Now the question,
Assuming that $35 will get me a car with a radio that is capable of
full forward, off and full reverse, what am I looking at for a motor
upgrade? Can I simply find one with minimal accessories built in, to
get me the full forward/reverse? I am noticing that I can get a speed
control/motor combination kit, but I may be screwed on adding anything
else to the car.

Any suggestions?
I have not purchased the R/C car at this time, as I am still searching
for a car that will make modifications a bit easier.

Thank you,
Mike

[ian]

"mike" <mlawrenc@gmail.com> wrote in message
news:1172959411.735746.55310@64g2000cwx.googlegrou ps.com...
: This is a bit of a newbie question.
: I will start off by explaining what this is for first.
: I am taking part in a local engineer's challenge.
: The goal of the challenge is to take a cheap ($35 or less) R/C car,
: mod it (budget is $150 CND) and race a circuit track and a drag strip
: (R/C scale of course).
:
: Now the question,
: Assuming that $35 will get me a car with a radio that is capable of
: full forward, off and full reverse, what am I looking at for a motor
: upgrade? Can I simply find one with minimal accessories built in, to
: get me the full forward/reverse? I am noticing that I can get a speed
: control/motor combination kit, but I may be screwed on adding anything
: else to the car.
:
: Any suggestions?
: I have not purchased the R/C car at this time, as I am still searching
: for a car that will make modifications a bit easier.
:
: Thank you,
: Mike
:
first off what scale?1:10th 1:12 1:18 ?

I would definitely ebay.

[mike]

On Mar 3, 11:52 pm, "ian" <r.linc...@ntlworld.com> wrote:
> "mike" <mlawr...@gmail.com> wrote in message
>
> news:1172959411.735746.55310@64g2000cwx.googlegrou ps.com...
> : This is a bit of a newbie question.
> : I will start off by explaining what this is for first.
> : I am taking part in a local engineer's challenge.
> : The goal of the challenge is to take a cheap ($35 or less) R/C car,
> : mod it (budget is $150 CND) and race a circuit track and a drag strip
> : (R/C scale of course).
> :
> : Now the question,
> : Assuming that $35 will get me a car with a radio that is capable of
> : full forward, off and full reverse, what am I looking at for a motor
> : upgrade? Can I simply find one with minimal accessories built in, to
> : get me the full forward/reverse? I am noticing that I can get a speed
> : control/motor combination kit, but I may be screwed on adding anything
> : else to the car.
> :
> : Any suggestions?
> : I have not purchased the R/C car at this time, as I am still searching
> : for a car that will make modifications a bit easier.
> :
> : Thank you,
> : Mike
> :
> first off what scale?1:10th 1:12 1:18 ?
>
> I would definitely ebay.

I am running a 1/10th JINHONGLONG Formula A car. Picked up the car
today for $35CND.

The car has independent springs in the front and a mono spring in the
back.
For being a cheap car, it does allow for wheel removal, and the motor
as some room around it, so I should be able to replace the motor with
little to no modifications. The rear axil is not solid, so controlling
the car with sticky tires should be easier then originally suspected.
With the current setup in the car, the motor is receiving 7.5V.

What power requirements are needed for some of these brushed motors I
see online?

Mike
mlawrenc(at)gmail.com

[ian]

"mike" <mlawrenc@gmail.com> wrote in message
news:1173057549.186195.287080@30g2000cwc.googlegro ups.com...
: On Mar 3, 11:52 pm, "ian" <r.linc...@ntlworld.com> wrote:
: > "mike" <mlawr...@gmail.com> wrote in message
: >
: > news:1172959411.735746.55310@64g2000cwx.googlegrou ps.com...
: > : This is a bit of a newbie question.
: > : I will start off by explaining what this is for first.
: > : I am taking part in a local engineer's challenge.
: > : The goal of the challenge is to take a cheap ($35 or less) R/C car,
: > : mod it (budget is $150 CND) and race a circuit track and a drag strip
: > : (R/C scale of course).
: > :
: > : Now the question,
: > : Assuming that $35 will get me a car with a radio that is capable of
: > : full forward, off and full reverse, what am I looking at for a motor
: > : upgrade? Can I simply find one with minimal accessories built in, to
: > : get me the full forward/reverse? I am noticing that I can get a speed
: > : control/motor combination kit, but I may be screwed on adding anything
: > : else to the car.
: > :
: > : Any suggestions?
: > : I have not purchased the R/C car at this time, as I am still searching
: > : for a car that will make modifications a bit easier.
: > :
: > : Thank you,
: > : Mike
: > :
: > first off what scale?1:10th 1:12 1:18 ?
: >
: > I would definitely ebay.
:
: I am running a 1/10th JINHONGLONG Formula A car. Picked up the car
: today for $35CND.
:
: The car has independent springs in the front and a mono spring in the
: back.
: For being a cheap car, it does allow for wheel removal, and the motor
: as some room around it, so I should be able to replace the motor with
: little to no modifications. The rear axil is not solid, so controlling
: the car with sticky tires should be easier then originally suspected.
: With the current setup in the car, the motor is receiving 7.5V.
:
: What power requirements are needed for some of these brushed motors I
: see online?
:
: Mike
: mlawrenc(at)gmail.com

most if not all run on 7.2 volts. though high performance batts and a very
expensive esc can put that up. its the ampage at this point too. my cheap
mtroniks 27x2 draws 2.14 amps at 7.2volts. top of the range motors that are
then stripped and tuned can draw 11amps. Basically flatten a 7.2volt
3700mah 6 cell pack in just over 4 mins. The rules are 27 turn= stock, 19
turn superstock, 17 turn very fast. 12 turn F£"k me! oh yeah x2 or x4
after the number of turns means more speed too.
:

[mike]

On Mar 5, 8:25 am, "ian" <r.linc...@ntlworld.com> wrote:
> "mike" <mlawr...@gmail.com> wrote in message
>
> news:1173057549.186195.287080@30g2000cwc.googlegro ups.com...
> : On Mar 3, 11:52 pm, "ian" <r.linc...@ntlworld.com> wrote:
> : > "mike" <mlawr...@gmail.com> wrote in message
> : >
> : >news:1172959411.735746.55310@64g2000cwx.googlegrou ps.com...
> : > : This is a bit of a newbie question.
> : > : I will start off by explaining what this is for first.
> : > : I am taking part in a local engineer's challenge.
> : > : The goal of the challenge is to take a cheap ($35 or less) R/C car,
> : > : mod it (budget is $150 CND) and race a circuit track and a drag str=
ip
> : > : (R/C scale of course).
> : > :
> : > : Now the question,
> : > : Assuming that $35 will get me a car with a radio that is capable of
> : > : full forward, off and full reverse, what am I looking at for a motor
> : > : upgrade? Can I simply find one with minimal accessories built in, to
> : > : get me the full forward/reverse? I am noticing that I can get a sp=
eed
> : > : control/motor combination kit, but I may be screwed on adding anyth=
ing
> : > : else to the car.
> : > :
> : > : Any suggestions?
> : > : I have not purchased the R/C car at this time, as I am still search=
ing
> : > : for a car that will make modifications a bit easier.
> : > :
> : > : Thank you,
> : > : Mike
> : > :
> : > first off what scale?1:10th 1:12 1:18 ?
> : >
> : > I would definitely ebay.
> :
> : I am running a 1/10th JINHONGLONG Formula A car. Picked up the car
> : today for $35CND.
> :
> : The car has independent springs in the front and a mono spring in the
> : back.
> : For being a cheap car, it does allow for wheel removal, and the motor
> : as some room around it, so I should be able to replace the motor with
> : little to no modifications. The rear axil is not solid, so controlling
> : the car with sticky tires should be easier then originally suspected.
> : With the current setup in the car, the motor is receiving 7.5V.
> :
> : What power requirements are needed for some of these brushed motors I
> : see online?
> :
> : Mike
> :mlawrenc(at)gmail.com
>
> most if not all run on 7.2 volts. though high performance batts and a ve=
ry
> expensive esc can put that up. its the ampage at this point too. my che=
ap
> mtroniks 27x2 draws 2.14 amps at 7.2volts. top of the range motors that =
are
> then stripped and tuned can draw 11amps. Basically flatten a 7.2volt
> 3700mah 6 cell pack in just over 4 mins. The rules are 27 turn=3D stock,=
19
> turn superstock, 17 turn very fast. 12 turn F=A3"k me! oh yeah x2 or x4
> after the number of turns means more speed too.
> :

You mentioned X number of turns and I am assuming the x2 and x4 are
the number of winds?
What exactly are these numbers?
I have seen motors with from say 10 to 18 turns, and they are all the
same price (same make/model, just different turn #).

I was looking at something simular to this motor;
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=3DLXJSS9&P=3D0

I am more then likely not going to be purchasing from this company
(cross boarder shopping will put me over the budget), but found that
this site appears to have the most info I could find on the
components.

Mike
mlawrenc(at)gmail.com

[ian]

"mike" <mlawrenc@gmail.com> wrote in message
news:1173103263.679390.38280@p10g2000cwp.googlegro ups.com...

You mentioned X number of turns and I am assuming the x2 and x4 are
the number of winds?
What exactly are these numbers?
I have seen motors with from say 10 to 18 turns, and they are all the
same price (same make/model, just different turn #).

I was looking at something simular to this motor;
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXJSS9&P=0

I am more then likely not going to be purchasing from this company
(cross boarder shopping will put me over the budget), but found that
this site appears to have the most info I could find on the
components.


All i know is the lower the number of turns the faster the motor. as for
the double, x2 etc that seems to help the characteristics. For example my
27x2 runs a lot smoother through the rev range. i.e the power output is the
same just the speed changes with the revs. So i think therefore it has a
wide torque band or powerband. Before you buy the motor make sure your esc
can cope. They are rated by turns too. However those ratings are a bit
generous. the lrp ai runner is said to do 15 turns yet i've seen a 27
trinity cobalt prove too much for it.

oh yeah, its not as easy as it looks, if its a circuit no bigger than a
basket ball court 19turn x2 is more than enough. in fact a well sorted 27
turn will produce 30mph.

[Richard]

"mike" <mlawrenc@gmail.com> wrote in message
news:1173103263.679390.38280@p10g2000cwp.googlegro ups.com...
On Mar 5, 8:25 am, "ian" <r.linc...@ntlworld.com> wrote:
> "mike" <mlawr...@gmail.com> wrote in message
>
> news:1173057549.186195.287080@30g2000cwc.googlegro ups.com...
> : On Mar 3, 11:52 pm, "ian" <r.linc...@ntlworld.com> wrote:
> : > "mike" <mlawr...@gmail.com> wrote in message
> : >
> : >news:1172959411.735746.55310@64g2000cwx.googlegrou ps.com...
> : > : This is a bit of a newbie question.
> : > : I will start off by explaining what this is for first.
> : > : I am taking part in a local engineer's challenge.
> : > : The goal of the challenge is to take a cheap ($35 or less) R/C car,
> : > : mod it (budget is $150 CND) and race a circuit track and a drag
strip
> : > : (R/C scale of course).
> : > :
> : > : Now the question,
> : > : Assuming that $35 will get me a car with a radio that is capable of
> : > : full forward, off and full reverse, what am I looking at for a motor
> : > : upgrade? Can I simply find one with minimal accessories built in, to
> : > : get me the full forward/reverse? I am noticing that I can get a
speed
> : > : control/motor combination kit, but I may be screwed on adding
anything
> : > : else to the car.
> : > :
> : > : Any suggestions?
> : > : I have not purchased the R/C car at this time, as I am still
searching
> : > : for a car that will make modifications a bit easier.
> : > :
> : > : Thank you,
> : > : Mike
> : > :
> : > first off what scale?1:10th 1:12 1:18 ?
> : >
> : > I would definitely ebay.
> :
> : I am running a 1/10th JINHONGLONG Formula A car. Picked up the car
> : today for $35CND.
> :
> : The car has independent springs in the front and a mono spring in the
> : back.
> : For being a cheap car, it does allow for wheel removal, and the motor
> : as some room around it, so I should be able to replace the motor with
> : little to no modifications. The rear axil is not solid, so controlling
> : the car with sticky tires should be easier then originally suspected.
> : With the current setup in the car, the motor is receiving 7.5V.
> :
> : What power requirements are needed for some of these brushed motors I
> : see online?
> :
> : Mike
> :mlawrenc(at)gmail.com
>
> most if not all run on 7.2 volts. though high performance batts and a
very
> expensive esc can put that up. its the ampage at this point too. my
cheap
> mtroniks 27x2 draws 2.14 amps at 7.2volts. top of the range motors that
are
> then stripped and tuned can draw 11amps. Basically flatten a 7.2volt
> 3700mah 6 cell pack in just over 4 mins. The rules are 27 turn= stock, 19
> turn superstock, 17 turn very fast. 12 turn F£"k me! oh yeah x2 or x4
> after the number of turns means more speed too.
> :

You mentioned X number of turns and I am assuming the x2 and x4 are
the number of winds?
What exactly are these numbers?
I have seen motors with from say 10 to 18 turns, and they are all the
same price (same make/model, just different turn #).

I was looking at something simular to this motor;
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXJSS9&P=0

I am more then likely not going to be purchasing from this company
(cross boarder shopping will put me over the budget), but found that
this site appears to have the most info I could find on the
components.

Mike
mlawrenc(at)gmail.com

__________________________________________________ __
Mike

How about posting up some pictures of the car you bought (of the electronics
inside, motor and chassis mainly). I was unable to find any information
about it.

Also put up some specs on the dimensions of the motor, diameter and length
and the volts and capacity of the battery pack.

Is this challenge you are doing a mechanical or electrical engineering
challenge? And is everyone using the same car and applying their own mods
to them?

[mike]

> How about posting up some pictures of the car you bought (of the electronics
> inside, motor and chassis mainly). I was unable to find any information
> about it.
>
> Also put up some specs on the dimensions of the motor, diameter and length
> and the volts and capacity of the battery pack.
>
> Is this challenge you are doing a mechanical or electrical engineering
> challenge? And is everyone using the same car and applying their own mods
> to them?- Hide quoted text -

I will post some pictures of car and the specs soon.
Everyone that is racing is limited to what they can purchase for
$40CND or less. Basically, take a bottom of the line RC car, and get
creative. (Max $150CND before taxes, including car and mods.)

This is simply a challenge for those of us that are not able or
willing to dish out the big $$, but still want to race.
Most of the people racing have some sort of engineering paper
(everything from Machanical, electrical, civil, etc).

Mike