Hey Sapper,
B_B brings up a factor I didn't think of. The fins in the disc must be the main culprit. You can always bolt in a regular blade carrier if you don't want to mulch with it. I have a four blade disc without the fins in the disc.
I think you have found the perfect purpose for the Tornado. Front yard duties. Sand will gradually weather away an alloy base. I have seen the result on a 70s VC -Sports after years of sandy soil and there were entire gashes through the base!
This may work in the Tornado's favour in keeping the underside clean of rust and preventing it's spread.
Last edited by Mowerfreak; 19/03/20 04:41 PM. Reason: Extra point added.