Thorp Air Command - T18.net

As someone mentioned I made a set of the Hoerner wing tips and they looked great and added 7/8 kts as test flown along side another Thorp with whom I had flown many times. We had flown side by side at 2350 RPM for many flights and when I flew my Thorp along side his after installing the tips I was able to keep pace at 2300 RPM and pull away Quite good at 2350. We were thinking by 7/8 kts. Also seemed to have more lateral stability as well as a bit slower stall ETC.
Frankly speaking, when you see all these aircraft on the airfield with modified wing tips that go back 20 plus years, theres got to be a reason for that ????
Before it broke I had a Aymer Demuth 68/75 prop on my 150 hp o-320 and the plane went like hell, because with the dual electronic ignition and 34 dg of advance i was able to turn a prop that big.
I have a copy of the John Evens plans which are from 2003, wish I had seen them early on. If any one wants a copy I'll try to copy and send It via E mail and if unable will mail it out. This is a great project with positive results. I think that it would be much simpler to modify a set from CUBES who has them in stock.

You really can’t make them for what Cubes is asking. Any fibreglass I’ve seen from Thorp Central has been top notch quality.

If anyone wants to save some time I have a pair of the standard rounded wingtips that I removed for the Hoerner type. No damage and no lights but they have the buried antennas. $250 the pair. They are from a folding Sunderland wing with wing fuel.
Speedbird 1.

_________________
N872DD
200hp Lycoming