PDA

View Full Version : 2 MR-03 Sports questions


ilove599xx
2015.03.24, 11:05 PM
Dear all,

I play once a week my MR03 in the club, I started to feel some limitation from my car,

I am using X Speed motor, can anyone tell me what's the fastest motor that I can install in my MR03 without changing anything?

Besides, can I update my transmitter too? My transmitter's wheel is a bit of loose, the black tire looking part always come out...


thanks

DMALMAD
2015.03.24, 11:23 PM
I would say 50t or slower unless you upgrade your fets. As for your transmitter there is a higher end model called flysky it4. It is a computer radio with a touchscreen that is a step up from the stock radio. However I suggest looking into getting an asf board or pn spektrum board as the radio options are much better and you will not have to upgrade your fets. Which means you can use a better radio and any motor you want.

ilove599xx
2015.03.24, 11:53 PM
I would say 50t or slower unless you upgrade your fets. As for your transmitter there is a higher end model called flysky it4. It is a computer radio with a touchscreen that is a step up from the stock radio. However I suggest looking into getting an asf board or pn spektrum board as the radio options are much better and you will not have to upgrade your fets. Which means you can use a better radio and any motor you want.

How many "t" does X Speed has?

Someone told me MR03 Sports is just for beginner, so I wonder if upgrate my car too much will be meaningless. Is it worth to update a new board?

it4 looks pretty neat, I am still a newbie in RC world, is it4's setup difficult to do?

DMALMAD
2015.03.25, 08:17 AM
I don't know I don't have any expereince with the IT4. However upgrading your board is very important upgrade. The asf boards are faster and allow you to use higher end radio like ex1 kiy or ko propo eurus. It should be something you consider but I am not saying that you have to use the other board. The sport is adequate enough and unless you are looking to be a contender in the amian I don't think it is absolutely neccesary. But a good radio is neccesary.

cowboysir
2015.03.25, 10:08 AM
I would try using some double sided tape to stop your steering rubber from spinning on the wheel. No point in replacing stuff that works unless you're looking for an excuse...

As for switching to ASF or spectrum its quite the investment to have a board. The upgrades described (board and radio) would retail in the $300-$500 range so you have to decide realistically if your mini Z experience warrants that level of upgrade just to get a bit more power and adjustment at the TX.

You've gota bit of decision making to do....

Jshwaa
2015.03.25, 10:35 AM
Anybody know what the ASF stands for?

I was assuming it stood for 'Auto-Synchronous Frequency', but I didn't find a reference to it in the manual for my MR-03S.

Also, I see that they made 'ASF' motors. Anyone know if there's anything special about them, to where they'd work differently in a non-ASF application, or is this another marketing thing? I can't seem to find the ASF chip in my ASF motor... :rolleyes:

ilove599xx
2015.03.25, 10:56 AM
I would try using some double sided tape to stop your steering rubber from spinning on the wheel. No point in replacing stuff that works unless you're looking for an excuse...

As for switching to ASF or spectrum its quite the investment to have a board. The upgrades described (board and radio) would retail in the $300-$500 range so you have to decide realistically if your mini Z experience warrants that level of upgrade just to get a bit more power and adjustment at the TX.

You've gota bit of decision making to do....

I will do your suggestion first for my rubber from the wheel,

DMALMAD
2015.03.25, 11:55 AM
asf motor is a little faster and really isn't safe to run on the boards that didn't have 3010 fets if I am not mistaken.

arch2b
2015.03.25, 03:06 PM
Anybody know what the ASF stands for?

I was assuming it stood for 'Auto-Synchronous Frequency', but I didn't find a reference to it in the manual for my MR-03S.

Also, I see that they made 'ASF' motors. Anyone know if there's anything special about them, to where they'd work differently in a non-ASF application, or is this another marketing thing? I can't seem to find the ASF chip in my ASF motor... :rolleyes:

you won't find it in the sports series manual which is FHS. ASF (http://mini-zracer.com/forums/showthread.php?t=26414) covered here and FHS here (http://mini-zracer.com/forums/showthread.php?t=39328). not a lot of information available from Kyosho on the specifics though. just a bunch of basic bullet points.

TheSteve
2015.03.25, 04:08 PM
ASF = Auto Selected Frequency.

I was always under the impression that the ASF motors were named that because they include a PTC(auto resetting fuse) of a specific value suitable for the upgraded electronics in the 2.4 GHz boards.

Jshwaa
2015.03.25, 07:33 PM
ASF = Auto Selected Frequency.

I was always under the impression that the ASF motors were named that because they include a PTC(auto resetting fuse) of a specific value suitable for the upgraded electronics in the 2.4 GHz boards.

My stock motor came with that part, but I bought an Atomic ASF motor that did not.

I found the data sheet on it. Never messed around with these parts before...

PTC Data Sheet (http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=SCD25171&DocType=SS&DocLang=EN)

It has a 30V and 1.35A rating on it, however according to the data sheet it does not trip until 2.7A is exceeded. If a spike at 6.75A surges, it will trip for a maximum time of 7.3 seconds. Until it trips, it is imposing 40 to 80 milli-ohms of resistance to your motor current. After it trips, it is imposing 150 milli-ohms of resistance to your motor current for up to one hour.

I would think that the stock motor would be the most gentle on the elecs, but has this redundancy in protection. I'd pull it out and net the gain in reduced resistance off the bat, and maybe use the PTC on another motor that draws more current. If it trips, at least you know where you stand with motor draw.

If you upgraded your FET's, you would maybe want to upgrade this part as well to stay safe. Digikey sells a 1.6A, 1.85A, 2.5A, 3A, and 4A versions of the fuse.

TheSteve
2015.03.25, 08:16 PM
They can be handy as they will trip from temperature as well if the motor is geared too aggressive - the motor has to be very hot to do it but I have seen it happen. I recommend anyone other then serious racers leave them in place as they provide a small level of cheap insurance for both motor and electronics.

ilove599xx
2015.03.25, 09:40 PM
I am really a beginner lol, I don't understand what you guys are talking about:eek:

by the way, I wanna put double sided tape on my MR03 Sports transimitter's wheel. How do I take the rubber off? Can I take the wheel off together too?

Looks like a screw in the middle of wheel but not sure what kind of screw driver I can match that

Jshwaa
2015.03.26, 07:54 AM
Looks like a screw in the middle of wheel but not sure what kind of screw driver I can match that

To disassemble the KT-19, you need a T8 Torx driver (looks like a star).

http://i83.photobucket.com/albums/j314/Jshwaa/Mini-Z/DSCN2414.jpg (http://s83.photobucket.com/user/Jshwaa/media/Mini-Z/DSCN2414.jpg.html)

You only need to take the screw out of the steering wheel though...

ilove599xx
2015.03.26, 11:47 PM
To disassemble the KT-19, you need a T8 Torx driver (looks like a star).

http://i83.photobucket.com/albums/j314/Jshwaa/Mini-Z/DSCN2414.jpg (http://s83.photobucket.com/user/Jshwaa/media/Mini-Z/DSCN2414.jpg.html)

You only need to take the screw out of the steering wheel though...

Thanks! I will need to buy a Torx driver though

ilove599xx
2015.03.27, 02:00 AM
dear all,

https://www.flickr.com/photos/131805935@N05/16941455152/in/photostream/

https://www.flickr.com/photos/131805935@N05/16735433277/in/photostream/

can anyone tell me how to take the blue wheel off?

do I need a allen wrench for that?

if yes, what kind of tool set do you guys use?

it's very annoying that I keep buying tools individually, any good tool set on the market?

mleemor60
2015.03.27, 06:26 AM
Simply insert the end of a paper clip or other "stiff" wire or small allen wrench and loosen. it helps to re-install the hub on the left rear side as a counter hold. Some of the better tool "kits" come from Atomic, Eagle and PN as well as X-Power. For the utmost quality go to Hudy or Wiha, especially for screwdrivers. Tools are not the place to save money.

ilove599xx
2015.03.27, 11:41 AM
Simply insert the end of a paper clip or other "stiff" wire or small allen wrench and loosen. it helps to re-install the hub on the left rear side as a counter hold. Some of the better tool "kits" come from Atomic, Eagle and PN as well as X-Power. For the utmost quality go to Hudy or Wiha, especially for screwdrivers. Tools are not the place to save money.

just quick checked Hudy and Wiha, they are not cheap, whoo,

I thought those 5 pcs around 30 dollars are expensive but now I feel I am really new to this hobby.

mleemor60
2015.03.27, 01:34 PM
Quality never is. The time will come when you are trying to remove one of the budget titanium screws from something with an even more budget tool and the head will strip or round out. There you will be with a cracked T-plate and no way to change it in the 5 minutes before the main. Take comfort though, you will have a front row seat to watch the race you could have been in. Never go cheap on tools.

ilove599xx
2015.04.02, 12:18 PM
I don't know I don't have any expereince with the IT4. However upgrading your board is very important upgrade. The asf boards are faster and allow you to use higher end radio like ex1 kiy or ko propo eurus. It should be something you consider but I am not saying that you have to use the other board. The sport is adequate enough and unless you are looking to be a contender in the amian I don't think it is absolutely neccesary. But a good radio is neccesary.

I was playing today, when many cars were in the track, my car would not listen to me and sometimes accelerate itself.


I am really looking for a new transmitter and hope that will solve the problem


well, I also have a kyosho 1:10 Sandmaster off road car,

can IT4 accept Mini-z Sports and also Sandmaster?

DMALMAD
2015.04.02, 02:19 PM
Yes the IT4 comes with a reciever so just switch the reciever in the sandmaster and put in IT4 reciever. You will have to adjust the settings accordingly but it should work.

mleemor60
2015.04.02, 03:17 PM
Do a transmitter reset on the KT-19.

ilove599xx
2015.04.02, 10:46 PM
Do a transmitter reset on the KT-19.

yea, I had done a reset for my transmitter of MR03 sports, it didn't work,


I never had this problem until I updated my motor to X Speed

ilove599xx
2015.04.06, 01:45 PM
Yes the IT4 comes with a reciever so just switch the reciever in the sandmaster and put in IT4 reciever. You will have to adjust the settings accordingly but it should work.

sorry another question, I was talking my another newbie friend about IT4.

I was confused a bit. mini-z sports uses KT-19, and my Sandmaster uses KT-200

so can IT4 still works for both of them?

so that comes another question...how did you know IT4 would work for Mini-z Sports? where to look at?

stefano225
2015.04.06, 07:21 PM
Here is a thread about it http://mini-zracer.com/forums/showthread.php?t=40171 I was using a FlySky FS-GT3B but went back to the KT19 since I wasn't getting a good turn radius with the FlySky even setting end points 120 %.

DMALMAD
2015.04.06, 08:28 PM
sorry another question, I was talking my another newbie friend about IT4.

I was confused a bit. mini-z sports uses KT-19, and my Sandmaster uses KT-200

so can IT4 still works for both of them?

so that comes another question...how did you know IT4 would work for Mini-z Sports? where to look at?

Your mini-z sports has an all in one reciver-esc which is why there is a very limited choice in tramsmitters. But luckily the frequency or whatever you call the way the radio transmits the signal is the same design as the stock kt19. However you sandmaster has an esc that is seperated from the reciever. Therefore you can use any reciever and thus any transmitter you please just by swithching your reciever. In the package with the IT4 you get a reciever, so all you do is unplug the servo and esc from the reciever that is matched to the kt-200 and put in the reciever that is matched to the IT4. The IT4 CANNOT pair with the original reciever in the sandmaster but CAN still be used by SWITCHING the original reciever with the included reciever. For the MR-03s simply just bind the IT4 to your mini-z as in theory the reciever in the mini-z is the same signal type as the one that comes with the IT4. Basically the mini-z requires just pairing to the radio while the sandmaster requires swithching recievers out but both will work.

ilove599xx
2015.04.10, 05:41 AM
Here is a thread about it http://mini-zracer.com/forums/showthread.php?t=40171 I was using a FlySky FS-GT3B but went back to the KT19 since I wasn't getting a good turn radius with the FlySky even setting end points 120 %.

so IT4 has no problem at all with steering? just wanna confirm

from the thread I only saw positive comments with IT4

now I really need to get it, I took my Sandmaster to the beach and the wave was too big so sea water made my Kyosho KR-200 receiver broken.
And my MR-03 is still accelerate itself if too many players are in the track.

ilove599xx
2015.04.11, 12:56 AM
thank you all guys, I just ordered one IT4, hope the best for me

no one in my club knows there is a transmitter will work on 03 Sports, I will surprise everyone I think

I have a feeling people will tease me with that big screen on IT4