4s top speed?

[Priv Joker]

Hi, i was wondering if anybody could let me know what top speed is approximately with the stock electronics on 4s. I have looked and all i see is top speed on 6s and im trying to decide on what motor esc for my kit should be. Im thinkin of starting on 4s and see what happens. I have alot of experience with 10th scale and smaller but nothing this large thanks

[redsawacs]

I would guess 30mph. I would recommend either the castle Mamba monster and the 2200kv motor or the Tekin Rx8 2000T8 motor.

Some have used other set ups but those are the two I recommend.

[Rjohn929]

I get 35mph with a tekin 2250 4038 and 17t pinion. Going to go with an 18 and check temps cause 35 isnt cutting it for me and I really dont want to go 6s.

[BobTeagle]

I am getting 41mph with 17t pinion on 4s 5200mah 40c Vicious lipo's. I am running a Castle 1515 2200kv motor and a Hobbywing Quicrun 150a esc.









This setup is performs well and stays cool. (the fan on the motor is unessesary, I had it laying around and used it during assembly). The vicious battery is a perfect fit as well.

[Rjohn929]

What did you use to check your speed? I'm curious how that motor, quite a bit slower in my ET48 then the tekin with the same gearing is running that much faster?

[BobTeagle]

Originally Posted by Rjohn929

What did you use to check your speed? I'm curious how that motor, quite a bit slower in my ET48 then the tekin with the same gearing is running that much faster?

IPhone 5 strapped on with Max Speed GPS app. It seems pretty accurate when I tested in my Jeep comparing to my speedometer.

As I am sure you know, alot of things can contribute to speed other than motor. Batteries, ESC, and tire size. The kit tires are slightly larger in diameter than the RTR tires.

[Rjohn929]

I understand that. I have a kit and use Vant 8000 40c 2s packs so it's a little heavier but 6 mph is substantial. Maybe I got a bad reading. I'll have to try it again.


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[BobTeagle]

Originally Posted by Rjohn929

I understand that. I have a kit and use Vant 8000 40c 2s packs so it's a little heavier but 6 mph is substantial. Maybe I got a bad reading. I'll have to try it again.


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I agree brother. What are you using to calculate speed? Also what ESC? That is a good motor you have there.. It could be a ESC setting..

[Rjohn929]

I have used my iPhone and a sky Rc gps meter. They both seem to be pretty accurate. I also use an RX8 gen 2. I'm curious to see what others are seeing? Are you using any timing?


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[BobTeagle]

Originally Posted by Rjohn929

I have used my iPhone and a sky Rc gps meter. They both seem to be pretty accurate. I also use an RX8 gen 2. I'm curious to see what others are seeing? Are you using any timing?


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Yes, I am not where the yeti is right know. I'll check and report back what it is set at. I have a hobby wing program card which had a lot of timing options. Can't remember what I chose off hand.

You have a great setup! Should do anything mine does and then some!

[Priv Joker]

Thanks guys for the great info so far. Keep it coming if u got it! Also thanks bob for the esc motor link. I just ordered it

[BobTeagle]

Originally Posted by BobTeagle

Yes, I am not where the yeti is right know. I'll check and report back what it is set at. I have a hobby wing program card which had a lot of timing options. Can't remember what I chose off hand.

You have a great setup! Should do anything mine does and then some!

my timing is set at 11.25 degrees per my Hobby Wing Program card

[BobTeagle]

Originally Posted by Priv Joker

Thanks guys for the great info so far. Keep it coming if u got it! Also thanks bob for the esc motor link. I just ordered it

great. I am sure you will be pleased!

I also recommend the program card for Hobbywing ESC's. Make programming a snap. You simply plug into the fan port.
Hobbywing LED Program Card Box C for Quicrun Series Car ESC | eBay

Here is the link for the bullet connectors you will need to solder onto your ESC wires that match the Castle Motor wires.
New Castle Creations 6 5mm Bullet Connector 13g 8g 200A 3 CC Bullet 6 5mm | eBay

[Priv Joker]

Originally Posted by BobTeagle

great. I am sure you will be pleased!

I also recommend the program card for Hobbywing ESC's. Make programming a snap. You simply plug into the fan port.
Hobbywing LED Program Card Box C for Quicrun Series Car ESC | eBay

Here is the link for the bullet connectors you will need to solder onto your ESC wires that match the Castle Motor wires.
New Castle Creations 6 5mm Bullet Connector 13g 8g 200A 3 CC Bullet 6 5mm | eBay

Thanks for the links. I ordered both

[BobTeagle]

This might be helpful In case you have not soldered bullet connectors

https://m.youtube.com/watch?v=B9yY9Kk4bEA

[Priv Joker]

Originally Posted by BobTeagle

my timing is set at 11.25 degrees per my Hobby Wing Program card

Hey bob. Would u be willing to share your esc settings? I have the same setup coming and i also have the programming card. Trying to at least get a good starting point. Thanks

[BEELZEBOB]

Originally Posted by BobTeagle

I am getting 41mph with 17t pinion on 4s 5200mah 40c Vicious lipo's. I am running a Castle 1515 2200kv motor and a Hobbywing Quicrun 150a esc.



This setup is performs well and stays cool. (the fan on the motor is unessesary, I had it laying around and used it during assembly). The vicious battery is a perfect fit as well.

this is about where i am at with the same motor w/ a sidewider 8th ESC and 2x 6000mah 65-130c discharge batts.

The best part is it reaches that speed in like 1.5 seconds.

[BobTeagle]

Originally Posted by Priv Joker

Hey bob. Would u be willing to share your esc settings? I have the same setup coming and i also have the programming card. Trying to at least get a good starting point. Thanks

Here is a list of my setteings per the Hobbywing program card.

Setting Item Value
1 2
2 1
3 5
4 9
5 2
6 1
7 2
8 1
9 4
10 1
11 1
12 4

Hope this helps brother

[cmbscx10]

Originally Posted by BobTeagle

Here is a list of my setteings per the Hobbywing program card.

Setting Item Value
1 2
2 1
3 5
4 9
5 2
6 1
7 2
8 1
9 4
10 1
11 1
12 4

Hope this helps brother

Bob,
What programmer so you use? This one HOBBYWING TECHNOLOGY CO., LTD. doesn't list the Quicrun.

Thanks for answering all my HW questions.

[fornowagain]

You need the cheaper LED box not the LCD for the latest 150a HW.