Quark/Neu No brakes at high speed problem
 

Hi Guys Just finished my first electric conversion and I love it. My main goal was to destroy the nitros at the local track and as a demonstration unit at big events as we are distributors for quark in Australia.

While in the initial testing I have found that past a certian speed i will have no brakes or no braking power.
So if i manage to hit top speed it will coast untill it drops below a certain speed untill I am able to apply brakes. I have fiddled with the brake settings but nothing seems to change this? Does anyone have any suggestions?


Details

Losi 8ight Pro
Neu 1515 1Y 2200Kv
Quark 125 monster
5 cell 25C Hyperion 5000mah pack
14 tooth pinion currently (smallest I have)

Thanks

That's strange, I have a neu/quark setup in my e-maxx, but I've never noticed anything like that before. Usually if I'm going really fast I'm worried about it flipping if I use the brakes. I don't know the brake settings that well, because I kind of set it and forget it, but I can't think of why it would do that for you, sorry.

Where in Australia are you?

I am located in Melb, when the brakes come on they are really strong, also this thing really hauls ass no speed checks but I am sure its near 100kmph or 60 mph with 5s lipo and the 2200kv motor anyone else go any ideas?

Thanks

Thats a new one on me, I got a Neu 1515/2.5d and quark combo

bump, still having this problem played with all sorts of settings with no luck, anyone got any suggestions? some more info if this helps

Anyone got the settings they are running with thier quark neu combos?

From Eagletree recorder

Peaks of 135amps

Motor doing max 43,000rpm (this seems to be when it cannot apply brakes close to or at max rpm.

geared with 14 tooth pinion and stock spur

THanks

I used to have my quark setup for low timing, low start power, low drag brake and had to set braking EPA to about 70% (50-60% on high traction surface)then it worked perfectly. No problems with braking at all.
i had max 110A@18.5V on my 5S pack, then my second quark died.


On my new mgm drag braking is just too strong with neu and i have to run without it (i actually like it)