Hi,

My son and I both run a Flash, in the 700 motor, 12 cell configuration.
The props we use most frequently are the Graupner K-series 42K, 43,5K and 45K, with an occasional 48K, milled down to 45mm.

We found the hull too small for 14 cells, it gets undrivable, specially in chop.

With your lighter brushless motor, the boat may by about the same weight as our 12 cells with a 700, so once set-up properly, the props mentioned above should work just fine.

Due to the older design of the hull, the handling will suffer once you exceed the 40-45 mph mark, the hull is too small to remain stable at those speeds, so build solid and expect brutal flips.

If you're running the boat, with the propshaft and motormount built in by MHZ, you'll be in for some 'interesting' boat behaviour...

We added a runpad to keep the boats stable when racing around our triangular course, works like a charm.
If the conditions are favourable, calm (and preferably running in the lead...), my Flash will corner like an Eco.
My son's Thick Flash has a bit more cornering issues due to the higher CoG.

The picture shows my son's Thick Flash, accelerating away from the marker, only the runpad, rudder and prop in the water, you can see the markings in the spray, made by the 45K prop.

Regards, Jan.