UK Heli Log

First impressions of the Radix 690’s are the blade is very light, has a wide cord, stiff, with a beautiful finish. On the Trex700 they seem very aggressive and much harder bog compared with other blades I’ve tried. They also seem to track pretty well too for a light 3D blade.

Moving onto the Radix 710, obviously the finish and quality is on par with the 690’s. There is a noticeable difference however, they are super poppy compared with the 690’s. Pop too much though and it will cost you headspeed, but that is to be expected, nothing a bit of collective management wont fix. They track slightly better in forward flight, mainly I think due to the extra size. Cyclic response is slightly slower, but maybe a little cleaner, particularly noticeable during flips/piro flips.

Over all both the 690’s and 710’s have their place.

Radix 690

Is a really aggressive blade with fast cyclic response with no sign of bogging during powerful moves.

Radix 710

Is an incredibly poppy blade which is slightly more graceful overall when compared with the 690.  The blade does however require sligntly more collective management for hardcore 3D, but well within limits.

Summary

They are both great blades, it really depends what flight characteristics you are looking for.

My choice is the Radix 710, just because I love the extra pop that you get.  And with a well tuned engine the extra load on the head can easily be managed with careful application of the collective. I’m not writing off the 690’s as they could be very useful in liven up a slower heli or a tired engine. Or maybe you just want a super aggressive heli