Another good reason for a single bolt prop hub...4 bolts are NOT nrcessary on a 50...Or a 62..or an 80..or anything else...A 3/8 24 grade 8 willl hold ANY twin used on ANY giant scale airplane...Our 40+ HP ZDZ custom made racing engines have a single bolt and 2 smaller 10-32s througth the prop...NO slip ever..The spinner backplate is bolted to the hub with 1/4-20 flatheads....
You could pull a truck with a single 3/8-24 grade 8....
Been harping on this for 24 years..And will continue to do so...
In case you don't believe the 40+ hp part, see what it takes to turn a 24x31 carbon prop 10000 rpm in the air..Our ZDZs do... With open stacks, no pipes...I can only image what pipes would do, our rules prohibit pipes outside the fuse...
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