Instructional & Tips

At Probuild we have found that the most reliable way of fixing an underbelly to the fuz is by a very simple system that if installed correctly will not come loose due to vibration. The underbelly is fixed to the fuz by 5 cap head bolts, one in the nose, 2 over the wing and 2 at the end of the underbelly. The method used is very simple, using two sizes 1/4" OD and 3/16" OD of Polystyrene plastic tube one slid inside the ot..

These tests assume that the plane has been built perfectly aligned, wings square to fuz, stab in line with wings, vertical fin is exactly 90 Deg. to horizontal stab. Thrust, incidence, and balance (CG) are set according to the designer's recommendations. The wings are not warped as checked with an incidence meter, and the elevator halves are moving together as checked by a "Throw Meter". These flying tests should be done in near calm conditions. Double-check each of the following te..

This Fact Sheet is primarily aimed at the newcomer to Building R/C Model Aircraft. This fact sheet applies to Wings manufactured at Probuild. Which have a Gator spar system. However, the general principles remain the same no mater what aircraft you are building that utilise a plug in wing. Wing Installation Blank off the ends of the Gator phenolic wing tube with 1/6 ply or similar. Insert into the holes that are pre bored in ..

This Fact Sheet is primarily aimed at the newcomer to Building R/C Model Aircraft This fact sheet applies to tail planes manufactured at Probuild. Which have a Gator spar system ready fitted in to the tail cores. However, the general principles remain the same no mater what aircraft you are building. Tail Installation Install the Gator plug-in adjustable tail set. Before the tail plane is glued in to ..

This Fact Sheet is primarily aimed at the newcomer to Building R/C Model Aircraft.   Mark the Rough Shape of the Nose Ring Mount First, using the spinner mark the rough outline of the nose ring mount on the material you use. Use 1/8" Beach ply or end grain _" carbon balsa. Cut to fit. My part may seem a little overkill but it adds some strength to the nose area and provides a lot of glue surface. The area that accepts the nos..

This Fact Sheet is primarily aimed at the newcomer to Building R/C Model Aircraft. This fact sheet applies to Wings manufactured at Probuild. However, the general principles remain the same no mater what aircraft you are building that utilises a one-piece wing. The following is a recommendation on how best to join such wings. Wing reinforcing should be adhered to as follows, it is imperative not to try and save weight on one small cent..

This Fact Sheet is primarily aimed at the newcomer to Building R/C Model Aircraft. There are a number of ways to attach the units in the wing, all of which, are very much depend on what type of unit is to be used. Air versus mechanical or whether you want to make your own, (See Sketch 1) or purchase readymade mounting boxes (see photo 1). The latter will save you quite a bit of building time for very little cost. Wings manufactured at Probuild can have reinforcing ri..

        This Fact Sheet is primarily aimed at the newcomer to Building R/C Model Aircraft The Hyde Four Stroke Engine mount has been around for some time now and can only be described as fit and forget. This is not to say there are no other types of mount you can use. In fact this year, both ZN and PL Products of France have come up with their own versions of this type of mount with some encouraging results. However, for the purposes of t..