Timing setting on Hacker/Jeti Master Basic 90A Opto ESC - RC Groups
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Apr 25, 2009, 08:12 AM
Registered User
Jacques.Eloff's Avatar

Timing setting on Hacker/Jeti Master Basic 90A Opto ESC

Hoping someone can help me here:

I have just purchased the Hacker/Jeti Master Basic 90A Opto ESC, but was bummed to find the instructions were in German . The dealer tells me to go the manufacturer's website, so I try www.jetimodel.cz and there is no manual there. I email Jeti and they say I must contact "Mr Hacker". Who the hell is this? Anyway, I did go on to www.hackerbrushless.com and they don't even list the Master Basic series.

Problem 1: I am trying to set the timing and I can just make out from the instructions there are 5 timing settings, each represented by no. of beeps in 5 repetitions. But these don't seem to make much difference to power. I was actually getting around 30% more power on another ESC I was using, so something must be wrong.

Problem 2: The brake seems to be on, as it only emits one beep when arming, and I can hear the brake kick in when I cut power. How do I turn this off? The programming mode only seems to run through the timing options, not any brake options.

Problem 3: The ESC seems to be on a soft start - it takes over 5 seconds to spool up to power. How do I set normal/hard start?

Background info - I am running the Mega FAI (16/25/2 variant) in EDF on 5S or 6S.

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Apr 25, 2009, 09:21 AM
EDF all the way!
bruff's Avatar
Try this
Apr 25, 2009, 01:42 PM
Registered User
Jacques.Eloff's Avatar
Thanks Bob, that's most helpful!
Apr 25, 2009, 02:08 PM
Lithium Member
Herb's Avatar
Looking at this website:


it seems the "Hacker Master Basic 90 opto" is very similar to the Jeti Spin 90 & Spin 77/99,


Most likely most features are nearly identical (ie programming) expect possibly the power rating.

So, you can probably program it also with a Spin Box if you or your friends have one, http://www.jetimodel.cz/index.php?page=product&id=34
Apr 25, 2009, 02:11 PM
Lithium Member
Herb's Avatar
Keep in mind that the best settings for Mega (6 pole) + Jeti in edf are


1) brake off

2) timing default = lowest, 3-4 degrees, for best efficiency,

3) everything else default

I have been running several of these jeti/mega combinations for years, and looked at every possible timing combinations,


A more advanced timing produces a bit more power (+10% or so) but also lower efficiency = more heat generated in motor.

Last edited by Herb; Apr 25, 2009 at 02:17 PM.

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