OldRookie

My Feedback: (13)

I am looking at a Hacker A10-9L motor, and it gives prop size as 8 X 4.3.
I was looking up GWS props and got part numbers like SF8043, EP8043 reduction series, EPP0843 slow fly.
What is the difference between these props?
Some are orange, black, grey...What is up with this?

Greg

bp2005

GWS SF slow fly props are reduction gear props with wide blades and lower RPM limits. EP and Hyper Drive props are direct drive and have a narrower blade and capable of higher RPM. origionally GWS props were all orange. Scale modelers requested black and gray, They are the same props with diffrent colors. http://www.gwsprops.com/direct_drive.htm Bob

OldRookie

My Feedback: (13)

It looks as if a lot of GWS part numbers are being used for the same prop.
The GWS site shows only one 8 X 4.3 prop, and that is a slow fly/reduction prop.
Problem solved. I just ordered from GWS. Good prices, and cheap shipping.

Greg

Dr Kiwi

Be aware that GWS produces three varieties of prop: as you've found, their Reduction Series like the 8x4.3 with broad flimsy blades are typically labeled as GWS RS. They also make GWS HD (Hyperdrive) like the 7x3.5, 8x4, 9x5 etc. with scimitar shaped blades. Their tiny props 4" or less with square ended paddle like blades (3x2, 4x2 etc) are what I'd term GWS DD (Direct Drive).