Do consider building at least one of the larger ¼ Scale bench for a trial they are very versatile. They can handle the big planes as well as all of the smaller planes.
Do not change the lumber thicknesses .Weight on the tail end is desirable.
Do not eliminate the central spine, part H. It is particularly important in a long run to keep the bench rigid and to keep it from going swayback in time.
Do not shorten the benches in length .The extra length is good for leverage against the engine thrust at full throttle
Do use the deck screws to fasten the bench together .Our benches that were built 4 years ago are as rigid as the day they were built. Do not use lag screws or bolts they are much more expensive and loosen in time .I do not have experience with a nail gun but I think it is wise to use the proven method with deck screws.
Do not eliminate any of the cross bracing parts L. You may use a smaller lumber like 1X3 instead of 1X4s but do no eliminate them.
Do not eliminate the 2X4 braces going from the table top to the front legs parts D.
Do not eliminate the part M. This piece is to catch the tail wheel on a taildragger.It would be a problem if the airplane was accidentally pushed in the tail section and the back of the airplane fell off the tabletop. Particularly if the engine was running.
Do not try to put in the screws without pre-drilling the prescribed pilot hole. The longer ones in particular are much harder without the pilot hole.
Do not put the screws close to the edge on the thinner 1 inch pieces.
Do consider building enough benches for the maximum number of flyers at the field at any one time. In my fields case we have about 500 fliers with 5 flight stations and we have 25 benches.
For further in formation contact the designer Charlie Meyer at CMeyer2474@aol.com mark all e-mails Subject : Safety Bench.
Property Meroke RC Club www.Meroke.com . AMA Charter club status # 458