Micro RS4 Thread
 

Just starting a micro RS4 thread a place to post pics, help with mods and setup tips..

thachowman this is in response to your post in the other thread. thought it would be better served here.

you may want to get a little stronger servo?

maybe look into a better chassis? Like a Penguin R/C P3500 series.
or if you have a stock chassis you can use it and cut about a 5-7mm slot on either side of the chassis where the rear pod meets the main chassis area.

what wheelbase are you running? the shorter 140mm wb usually offers better steering response. and have not heard of to many guys that like the GPM X-shocks if that's what your running? most seem to like the stock suspension set up better.

good luck with your racing! give em hell!

Here is a new six cell chassis for the MICRO RS4. YOU CAN USE ANY BODY WITH THIS CHASSIS. :cool:

Interesting design. Would probably make for a good drifter setup.

IMHO, I think that's a pretty bad design, having cells up that high will be horrible for handling, it'll want to roll so much.

I find the HS55 not bad at all it was in my MIni T but as I am upgrading that I threw it in the RS4, and I wouldn't mind the penguin chassis but $$$ at the moment, the chassis on it now is not stock but I am unsure of what type it is as I bought it secondhand, I think that it is a GPM chassis .

I am running a 150mm wheel base atm, but I will try a 140mm when I get a belt and body, and yes it is the GPM X-shocks as far as I know.

But I think I may have just found a way to beat them ..

I have just bought an Xray M18 as well.. Hay if you cant beat em join em hey. I am still gonna work on the RS4 , but the M18 will be the main car now, I just am awaiting delivery so I'll keep you all posted on it's progress.

What chassis is this and who sells them?

I wouldn't get that chassis. You would be much better off with a pan style chassis. The 2 best in my opinion are the Motec EXO2 and the Penguin. I would have to give the edge to the Penguin for the simple reason that they seem to have better availability. Motec seems to have left the micro rs4 behind.

stevem, i do it was made so you could use any width body with six cell.

rapid roy, the best chassis is the RATZAS chassis without dought!!!!! :cool:

Why do you think the Ratzas chassis the best? Both the EXO2 and the Penguin chassis have an active rear suspension pod which makes it handle much better. I'm pretty sure the Penguin can also be run either 140mm or 150mm which will allow the use of any body. The EXO2 is only 150mm. I have been using a GTP style porsche body on mine which is 150mm. Its ultra low and produces a lot of down force.

http://i77.photobucket.com/albums/j6...Picture018.jpg

i have seen many micros in my time some very fast and some very slow but this thing is the best reaction i have every made faster then my NTC3 with a novva rossi im not going to tell u wha i ahve in it the only thing is u can look at the body as u can tell or maybe u cant it has great steering

Rapid Roy, the RATZAS chassis has all the adjustment the other do (140 or 150). the first one had 4 springs attached to the tail section, then it went to tail peices with different thicknesses. remember all pan chassis are wide, this limits the body width, thats why i designed my chassis. it really is not top heavy. i have raced ratzas since the beginning. that why i like them so mucn. :cool:

Ok, now I see what you are talking about. That Ratzas chassis is really wide. I haven't had any fitment problems with my Motek chassis. Looking at Penguins site, I see they have chassis with 3 different widths.

I also took a look at Motek's site and they have discontinued the Micro RS4 chassis. They only sell parts now.

Say whaaaatttt!!?!?!?? You posts would be a lot easier to read if you used some punctuation.

here is one of the newest chassis available for the mRS4 - Dragon Racing Products "Griffin" chassis...

I've been running mine about 3 or 4 weeks and I gotta say I am very impressed...

http://home.comcast.net/~k.bojarski/Griffin_020.jpg

that chassis is a little busy. :cool:

not much you can do ;)

its a racer, not a shelf queen

Have you done a direct comparison with the dragon chassis and one of others that use an active rear pod? I'm just wondering how it stacks up. It seems to me that the active pod can be tuned to the track for better handling. Having said that, it might not work out in reality since my experiance has been that tire choice is by far the most importaint tuning factor.

as far as a comparison - to me, they feel about the same...My last chassis was a Ratzas - and the rear had a little hop...Same exists with the griffin...

As far as lap times, I have no idea :) different motors, electrics and batteries from the last time I ran my mRS4

but compared to the m18's - it feels just as fast, just a lot quieter and can hang (within reason) with a little ol' BB :)

Last Winter I drove into Micro on-road with a used
Motec-EXO2, ''active rear pod'' style chassis.
We raced on foam tile and untill I got foam tire's,
it was all about set-up and throtle/brake control.
[280/300, Rr Ball diff,Frt 1way or open,6-1100niMh]
Man did those rubber skin's school, Me!
Now I'm pretty familure with the Lil' Whip..

anyone know of some good battery ...maybe lipo want higher mahs..which ones would fit ?

Ya..I need a ball-diff and steel axle frt or at least some more alum axles and out drives.
I've seen lot's of batt configuration pic's here http://yourmicro.com/
A lipo could be it! not sure about going B/L ,
Car can go Way faster than I can drive,
other trusted racers have shown me!!

Guys, any idea where can i buy front ball diffs for micro rs4? TIA

that is currently the most sought after mRS4 part - they have been out of production for a LONG time :( I think I got the last one for sale on the east coast earlier this summer....

I wouldn't mind getting my hands on a 2nd one for Griffin #2

You can try rcraceday.com - they might have one, but don't be disappointed if you can't track down one

hey guys,
i just decided to give my old MRS4 a revamp. so i ordered a sweet Penguin RC 3500LM chassis for it, with micro servo mounts. i'm throwing in all new electronics, including a Mamba package.

i will probably be racing it in the micro class at my local club, nothing fancy or particular about it. what Mamba system should i get if the track will be built for 1/10 gas/electric sedans? will the 5400kV be a good choice? i am not looking for stupid fast speeds with tire shredding power, i want the system that i can control and be able to use to its fullest. i'm not sure what gearing i'll be running, so i might need some help on that too.

by the way, if i do get a brushless system, i should probably use metal pinions, right? i am guessing that the plastic ones would just spin right off.

The 5400kV will be perfect. Anything higher will kill drivetrain parts and you will need a large track to really pull out all of its potential. As for gearing, HPI sells steel pinion gears for the Micro RS4 in 9T-14T flavors, I suggest 10-11T.

thanks man. i have thought about this for a while and i think i need to do some more upgrades before i can be very successful with racing it. i should probably get the following before long:

steel universals
rear ball diff
front one-way
VCS rear shock (once i get the new chassis)
more foam tires
better front shocks (at least get some different springs)

is there anything else you think i should add?

i went to the LHS today to pick up a few things to get my MRS4 going again.

TRC foams, FR and RR
HS81 servo
dual link tie rod set
Li-po battery, e-Flite 2S 7.4V 1200mah

and i ordered a new body for my ride too. all i will need is another receiver and a motor system.

Funny because I just rebuilt my friend HPI and I will give it a try tonigh (I have sold mine long time ago) !!!!

K_bojar: do you really thing that your car could follow a m18 with almost the same electric setup (same motor, same number of battery..etc) ???

do you know if someone was running an HPI at the ECC ?

Great Race Car!
 

Well the indoor Micro Season is upon Me again, and I can
break out the mrs4 and will take on several m18, Recoils, etc.

I Want to use the Futaba 5000 that came with my 'Detta
with either a JR310 or Spek' Micro rx. In a EXO2 but,,,
The JR310 had set-up problems with the F5000 in the 'detta?
[Dead spot's in thrtl & No brk all rev']
Maybe that need's a set-up at every power-up?!

Otherwise, it's the Spektrum Micro rx out of my 1/8 scale
and I'm not sure it has enuff setting's for this Whip!
Whats you'r input? What are you Racing? Think this will Work?
M-RS4 EXO2, [b/d & o/way,steel axles, 280/300,
vc shock, mg81 w/dbl Ti' link's, 6cell 600/1100/1500?]

neat little car might have to get me one!

Im using aftermarket BL at 4800kv but its just that the esc is not programmable. Im putting it at my rs4 with stock chasis however, when throttling the car goes donut. Why is that so??? Anybody can assist me here :)

first off
how is the car mechanically....do the wheels spin freely? is the steering centered? if you roll the car on the floor does it track straight? Is your steering is centered?

your new esc is the power linear? or is it like off-on....
if you pin the throttle very fast the car can donut.....

Let us know what you find.....

Mechanically the car is using, stock chasis, stock frt and rr shock & spring, upgrade micro ball diff set. The wheels do spin freely all four and when throttling also. Is just that my steering, i have to sub trim it to the right until 100 then trim it again another 15 at the front screen of my 3pk, then only the car can go straight. But right after throttlilng the car would go spining or donut. My bl esc is just like the on and off and im using 11.1v 3 cell lipo. Even i have reduced the throttle curve to -100 the max, still it goes donut. I even lock tight my rear ball diff because its just keep spinning . . . :cry::cry:

Mechanically the car is using, stock chasis, stock frt and rr shock & spring, upgrade micro ball diff set. The wheels do spin freely all four and when throttling also. Is just that my steering, i have to sub trim it to the right until 100 then trim it again another 15 at the front screen of my 3pk, then only the car can go straight. But right after throttlilng the car would go spining or donut. My bl esc is just like the on and off and im using 11.1v 3 cell lipo. Even i have reduced the throttle curve to -100 the max, still it goes donut. I even lock tight my rear ball diff because its just keep spinning . . . :cry::cry:

does the motor have a brake? after you let off the throttle do the wheels still spin? what esc are you using?

Oh ok, hmm, the bl and motor hv brake, and after letting off the throttle, that, i got to check again whether the wheels still spin or not.

a. If wheels still spin after throttle ... ok?
b. If wheels do not spin after throttle, is it nok ok? binding?

The esc is meant for a plane using bl motor, i dunno what brand but it really does not have any device for programming, as u said its just an on and off esc. This is just my project since in the internet they said any 5000kv below bl can be used at the rs4. I might want to try to go with 2 cell lipo 7.4v and see whether the rs4 can take it or not.

Now, i have changed back to my stock motor.

I think the esc you have when you let off the throttle the motor brakes.....like a drag brake...this will cause your vehicle to turn.....and spin....
you really need a car esc.....

Alrite bro, will do that, thanks . . . :cool:

Guys, anyone knows whether or not does the front one way for micro rs4 can really withstand the brushless speed, because if im using the 4800kv bl then my front one way gear would strip. :cry: