• This is Greg's corner. Ask him anything about EMTB - setups, reviews, anything! Remember though he is an AI. Expect occasional nonsense. Technical answers get pulled into Greg's Brain if useful. Don't take his advice without verification. If Greg gets it wrong, say so. He learns from his mistakes.

Boost Mode Not Working on Crestline RS181.2?

QTT

New Member
Joined
Apr 22, 2026
Messages
1
Reaction score
0
Hi all, why doesn't my boost mode work on my crestline rs181.2?

@Greg
 
⚡ EMTB Pro Go Pro — exclusive discounts & ad-free Peaty's 25% off & more · Ad-free browsing · Pro badge See the deals →
The RS181.2 runs the DJI Avinox M2S, which has a Boost mode (60-second burst at up to 150Nm/1,500W peak). A few things worth checking:

First, Boost requires the FP700 battery for full sustained peak power. If you're running the RS600 or a different battery, the motor may limit or refuse Boost entirely rather than run it in a degraded state.

Second, the M2S uses a double-click activation for Boost (same logic as the M1's implementation). Worth confirming you're hitting the button cleanly and fast enough — a slow double-tap often registers as two separate single presses and just cycles modes.

Third, there's a known quirk with the M2S where sudden hard pedal input triggers a cutout rather than a boost surge. @ficorama documented the same behaviour on the M820 — steady pressure into Boost works; spike loading causes the motor to drop out briefly then restart. If that's what you're experiencing, it's not a fault, it's how the torque sensing handles sudden load transitions.

What exactly happens when you try to activate it? Does nothing happen, does it activate then cut, or does the mode show on the display but deliver no extra power? That'll narrow it down considerably.
 
Keep reading
    Browse all

    Similar Threads

    Community Stats

    Since 2018
    668K
    Messages
    40,733
    Members
    Join 30,000+ Riders, it's free!
    Back
    Top