Hi guys,

I have the following problem with my one of my Muchmore FLETA PRO Brushless ESC's...

Currently I have 2 of these ESC's and race with them in the following classes:
17.5 Boosted - with a Hobbywing V10 17.5 motor
13.5 Boosted - with a Hobbywing V13.5 motor.

The Fleta ESC as used in my 17.5 class has no problems and has strong brakes.

However the ESC used in the 13.5 boosted class has weak brakes but only at high speed i.e.
While the ESC is still in "boost timing" and I apply the brakes, they are very strong depending on what I have set on the ESC.
But when the ESC enters into the "turbo timing" i.e at full throttle and I then apply the brakes, initially the brakes are very weak for a period of about .5 secs and then they become stronger but by this stage I have overshot the corner.
It is as if there is a big delay for the ESC to come out of turbo mode first before the brakes are applied.
Which is very frustrating especially on tracks with long straights as I need toapply breaks long before anybody else and loose a lot of time.
I also run the risk of getting hit from behind as the the others guys in the race aren't expecting me to apply the brakes so early.

I have tried the following to solve the problem....

1.) Purchased/tried the following 13.5 turn motors but they all give the same results ..
Hobbywing V10 13.5T
Tekin Redline Gen2 13.5T
Muchmore Fleta ZX 13.5T
LRP X20 13.5T
Orca TX 1.35T

2.)Reflashed the ESC multiple times with the latest Expert V1.3 firmware - Defaulting the ESC first before reflashing.

3.)Tried all available brake settings Full Brake, Brake Frequency using the Expert Factory Team settings from "Junho Lee" setup that comes with the V1.3 USB Link software.

4.) Changed gearing.

5.) Setup/Rebound my Sanwa MT4S to the ESC multiple times. Then increase my EPA on the brakes to 150%

None of the above help.

Anyone else have similar issues and managed to fix it?

With Program card, mess with the initial braking strength and Drag brake. More Drag brake does effect Initial braking. Play with it until your satisfied. Try Drag brake off. Adjust initial braking. Drag brake work automatically when trigger is at neutral, good for exiting corners.

Good luck!! Have fun!!

try lowering the brake frequency.

i had this problem with my orion r10,i switched to lrp problem solved
the other thing i did was to reduce the esc timing and crank up the motor timing and then gear accordingly,added a bit more heat but brakes were stronger

Hi guys,

I have the same problem mentioned above with my Fleta Pro ESC. Using it with a quite new Speed Passion 13.5T MMM Motor. Had setup the drag brake off and brake frequency up till 16khz and 100% Brake Strength. EXP +50 on my TX.

Still feels like the brake is a bit soft initially and doesn't really have much power in braking. Tried it with an older SP 13.5T V3 and it is even worst.

Had to brake early, about 3-5 meters before the standard braking point at my local track just to make it into the corners without overshooting it.

The other guys using Hobbywing V3.1 with Bandit 13.5T and he can really brake hard with it. Even make the tyres skids when braking late.

Anyone solve the problem yet? Hope someone can help out with this problem.

Thanks in advance.

Hi guys...

Just a quick update on this issue.

What I have found is that it has nothing to do with Turbo. At first I thought there was a delay in activating the brakes when the ESC was in turbo timing e.g a hairpin at the end of a long straight and you then applied full brakes.

So after some testing where I set turbo to 0 degrees and then did some free revving bench testing, I found that the problem only happens when you go from full throttle to full brakes in one movement.
If you go from full throttle and allow the trigger to momentarily stop at neutral and then apply full brakes, it work perfectly and the ESC has massive brakes.

However this is not ideal as you have to start braking earlier than the other guys who are using HW/Orca/Tekin etc speedo's.

In the area where I race, we are all having the same issue with the brakes and in my mind it has to be software related.

what software version do you have?

Im running the latest Stock V1.3 firmware and it also happens to me. So if it is software related problem...how do we solve it? Will downgrading to an earlier version firmware help and is it possible to do so?

V1.3 software using the stock version for 13.5 boosted class.

I was trying different settings on my Sanwa MT4S radio today and I found that by turning down the brake EPA from 100% to 70-75%, the delay has decreased about half.
A definite improvement on the delay and it can easily be seen by doing a bench test.
My only concern is that it may have reduced overall brake strength.

I will only be able to test this on thursday on track.

Can someone else try it and report back if they noticed any difference.

16khz brake freq will be very soft. Run at 2khz and 95% full brakes, 15% drag brake and initial brake = drag brake. I have very strong brakes at that setting. This is on Stock v1.3.

Maybe its my misunderstanding with the brake frequency setting. I thought the higher the frequency the better the response. Anyway, I can try those settings and see what will happen. Hopefully there is some improvement.

SeanV, I will try those settings on track this Thursday or Friday if I have the time. Using Futaba here, will set lower EPA and see what will happen. Right now the solution that I'm implementing is to set higher EXP up to +50 for brakes but still problem not solved.

Thanks please let me know how it works out for you.

I also tried lifting EXP but if anything it made the delay worse with my Sanwa.

So I spent some time on the track yesterday and found by setting my EPA to around the 70-75% mark gave a big improvement on the brakes.
I am still not able to lock up the brakes like the guys running HW ecs's but at least I now have brakes with a minimal delay.

While at the track and speaking to the other guys, I was surprised to learn that this issue is not just isolated to the MM esc's, the other races who run the Orca esc's (VXX and VX3) complained of the same issue and they also had their EPA set to around the 60-75% mark to get around the issue.

It also seems to have to do with your ESC/motor combination.
On my MM I haver tried the following motors in 13.5 boosted..
HW V10
Tekin Gen 2
Orca TX
All have the same brake issue.

I use to run a red Trackstar a while back and don't recall having the brake issues, but I found those motors tend to burn very easily and don't like heat at all.
I had 2 of them (13.5 Boosted) go up in smoke at around 6-0-70 degrees C.

The higher the frequency the smoother/softer the brakes will be. The lower the frequency the more aggressive/harder the brakes will come in. Try 2khz and see.