has proven very successful as have the 14 x 6, 12 x 6, 11 x 6 and 9.5 x 4.5 in other engine sizes. These 5 sizes are efficient narrow bladed propellers suited to 'climbing' type events.
For most O.T events, a fine pitch prop is generally best, especially for duration. As it so happens the props used by the modern F2B (c/l stunt) model also suit.
To meet these 2 demands the 12 x 4 (narrow), and the broader blade props, the 12.25 x 4.25, 12.5 x 5.5 and 11.75 x 4.25 have been introduced to the Bolly range.
We now have the newer updates to the above designs ... 12.6 x 3.8, 12.2 x 4.2, 11.8 x 3.8 and 11.25 x 4.
PROPS FOR C/L RACING
Bolly Props were originally produced for C/L only, and therefore we cater for most sizes and events.
For .051(mouse racing), the 5 x 5 or 5.5 x 4 have held many records.
Goodyear (Scale Racing) is a variable world wide (.15 or .21).
For .15 glow use, the G series, ie, G3, G2, G22, G23 (New) are all good as are some of the QM props, the 7 x 5.5 and QM4 (New). For .21, some of the large QM or smaller TR props should work.
Team race (FAI) has seen many of our old 1970's designs deleted to the X-List, and many new choices. The TR80 / 5 series are all developments of a similar style prop, all are good, it's a matter of selecting the correct version for your set-up.
The 'odd-ball' TR events, ie, 1/2A and B will often find a suitable prop amongst the TR or FAI pylon props. For 1/2A or Mini Goodyear the new TR84 should be suitable due to its low blade area. Some 1/2A pylon props may be of use in smaller classes.
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