Explain a little further... This might help educate me. For a bunch of trucks (monsters mostly) getting at the flywheel just isn't an option. Mostly only the 1/8 scales, STs and Truggys have easy access to the flywheels.

I have ran probably 15 nitro motors in 3 years and never had a problem with either method. I am very certain that if the truck is under throttle or idling too fast that it might damage it using the methods, but I just have never seen it.