How to shut off a nitro engine and talks about why he uses this method. This is for general use with the engine idling after a run. This is not for Stopping or Shutting Off a Runaway Engine. www.mugenracing.com www.thedrakeracing.com
Last run of day should always shut off by pinching fuel feed line to ensure most of the fuel left in motor is burned. Nitro fuel is methanol based and hydroscopic. Any unburned fuel left in motor will absorb water and will eventually begin to corrode components.
I use the flywheel method. If I dont have the rubber stop tool, i'll use my walking stick. I personally dont like to use my finger as I have in the past hurt my fingers from the flywheel rubbing skin away.
You can run it out of fuel by idling the engine, but I don't prefer this method because it's basically running the engine dry. I just stop the engine and then use our after run oil.
This is related but different, i think we all need to tech the new guys and electric only guys how to safely stop a run away. I don't know how many times I've seen new guys grab it to marshal it and the car is screaming and they throw it down and cue circus music.