hi guys
i have got a gws edp-20 from rc for all[i.e. Mr.Sai]
however i am not able to connect the prop to the motor as the shaft of the motor is not as thick as the bore of the prop
so please help me out
in the package there were-1 motor,2 prop,2 washers and 2 screws

hi ankur, why dont u ask Mr Sai itself.?  u would get a much better solution from him since he  would be knowing about the product he sold to u.

Congrats Ankur for finally getting R/C stuff (if I am right, your first purchase)

It would be great if you at least send the URL so lessers like me attempt to work.

I assume that you got something like below

http://www.centerstick.com/GWS_EDP_20B_p/edp20b.htm

Check if you received small 'Ring' like prop adapters whose outer diameter matches that of prop and inner that of Motor shaft. if not do check with Mr Sai. Such small things are very easy to miss while shipping or even unpacking at your side!! But its also likely that the props should have exact diameter of the shaft itself.

Hope Mr Sai is listening.

All the best for your build!!

actually i didn't got it directly but got it it through amir bhaiya[along with other product from hobby city including lipos,aqua props,props]
he didn't open it so the prop adapter has not been misplaced and i open it very carefully
it was not send with it
secondly the prop given with it is gws ep 3030 while it should have been 2508
or are both the same??

Not to hijack the thread, but these motors have been put to some nice use (came across this when I was searching for the motor specs). 

Enjoy !



Description from the Youtube page for this video :

3030 and 2508 are grossly different props. Did the Motor /Prop combo come in the original GWS packing or was repacked by Rcforall ? In later case, you may contact Mr  Sai to check for a possible goof up. Other wise, try to get the exact matching Props for the motor from somewhere else as getting hold of GWS guys would be completely futile due to multiple people in between.

BTW, I have 2 brushed motors from a pusher glider (Chinese) with matching Props (4 nos) Want that ? (give away!) - an exclusive offer only for young enthusiast like you, living in place with no RC LHS (I grew up in similar town, so know the pain of accessibility of such items). You may PM me your address... and yes, I can also throw away the Rx+ESC and Tx (27Mhz), but first I have to check shipping logistics (motor, Rx/ESC are fine, but the shipping Tx is a problem)...

3030 is a good combination with GWS EDP 20 as long as you are using 3.7V. but you need to use 200 mah plus to have a good flight time.

You need a prop adapter to connect the prop.

ok the i have no prob with prop
however since prop adapter is not supplied from where can we get it??
links please.

Will check if I have any thing in 2 mm  and let you know tomorrow.
GWS  does not supply this power system  with prop adapter or saver :
http://www.gwsus.com/english/product/powersystem/edp20.htm

I agree with Col. Sundaram if you want to use 2 cells you have to prop it down to 2"

sai

here are the pics

the 1st 2 pics are of motor
the 3rd is of screws/washers i got with it
and 4th is of the ep-3030 prop

and i have some extra props need some advice with what should i use them
i have gws ep 0320 and 4025

ok i finally got it to work using a 2510 [2.5*1]prop
and i also used the 3030[3*3] supplied by mr.sai with a motor that was extracted from a old portable cd drive which was used to change the position of the cd laser lens...
i also used a motor extracted from a toy car with a 4025[4*2.5] prop with a prop adapter made using tape[i actually taped the 2mm shaft of the motor to give a 4mm shaft on which i put the prop]-and the thrust was awesome,when i used a 3.7v li-ion(fully charged) to check it
now i need advice on which esc to use with these 3 motors system...-i plan to use them with 2s lipos
please help me out
the pic of the esc which i have posted[connected to edp20] is abt 5-6A esc provided to me by Mr.Saikat
please tell me if that esc can be used with any of these motors and if yes and which all of them?
here are the pics....
1st is of edp-20 with 2510 prop
2nd is of edp-20 with 2510 prop and connected to the esc i was mentioning
3rd is of the cd len positioning motor with 3030 prop
4th is of toy motor with 4025 prop

-ANkur

Ankur

yes - you can use the esc -

what receiver are you going to use ?

ok sir thankx
u mean that that esc can be used with all if the motors or with some particular-please confirm
and i'll be using a tx/rx provided to me by ujjwal bhaiya....

and an other question-in the motor[3rd pic] with 3030 prop-it is not giving good results
is there anyway to increase the rpm like putting a capacitor???if yes then which capaciter should i use?
that esc can be used with all if the motors or with some particular-please confirm
please help me out
-ANkur

sir just a question-u said that this esc is of abt 4A
and this motor's hishest amp draw is 1A
so will it work?
also will it work with other set of motors....
please answer the questions i have posted above

when i said 4 amps - that is max

you can obviously use with lesser load -

yes that esc can work with all the motors pictured.

ok sir thanks
please answer this question..anyone

-ANkur

anyone???
please answer this question..anyone

-ANkur
[/quote]

Ankur,

I don't think adding a capacitor will help. The prop is not the right match for the motor. Better change the prop or the motor.

-Ismail

what should be right match-for both motor and prop

What is the KV of the motor that you are using? If that is a CD lens postioning motor then I would expect the KV to be in range of 2K or more and it might not generate the required torque for spinning that high pitch prop. I would suggest using a brushless outrunner.

well i don't know the kv of the motors
its similar to this link
please give me the links of the motor to be used with prop and prop to be used with motor

anybody interested
plese help me out
80 people logging in everyday and 0 reply in 5 days

in what does adding a capacitor help??
and i have 3020 and 2510  props is any of these two props good with that motors[which is currently being used with 3030-the cd rom lens positioning on]
also will chopping down 3030 work??if yes then till what size it has to be chopped??
i prefer to chop it as then i would not have to get the shaft of the other props enlarged as this perfectly fits it
i plan to use the cd rom and gws edp-20 with 1s-2s 138-850 mah lipo depending where i use it...
btw this was from a portable mp3 player and not a cd rom drive...
plz help...

-Ankur

I don't know from where you got the idea of adding the capacitor. In CD players you would normally see a capacitor hooked up between the motor terminals to suppress the noise generated by the motor. In technical terms its called a "snubber ciruit". That would not help you in increasing the RPM or torque.

I have no idea of how much torque the motor generates so, might not be able to guide you on the prop modification. If you want to experiment get a couple of props and go ahead chopping it down. But I am a bit doubtful on the outcome.

-Ismail

ok thanks
abt the idea of capacitor i saw that in toy rc/non rc cars the motors had it
when i compared two motors one with and other without a capacitor i found that the capacitor one had a better rpm and torque-the motors being the one and the same
anyways i'll try out by cutting it down...