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KDE Direct Performance Tail Upgrade V2 (T-Rex 550/600/700)
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This is an optional KDE Direct Performance Tail Upgrade Kit "V2", and is intended for use with the ALIGN T-REX 550, 600E/600ESP, 600N, 700E, 700N and 700N E-Conversion series helicopters. This kit is a direct replacement for the standard Align part #H60046. The Performance Tail Upgrade V2 provides superior tail control for sport and hard 3D flying styles. With dual flanged, radial ball bearing supported tail grips and precise machining tolerances for the brass bushing sleeve, the new design provides a truly slop-free, high-performance tail that is rock-solid for all maneuvers. The design is a simple retrofit for the common Align parts on the helicopter (replaces the stock plastic tail control links), with the ability to be used on all TREX 550, 600E/600ESP, 600N, 700E, 700N, 700N E-Conversion helicopters on the market and installed in a matter of minutes.
- (2) TREX 550/600/700 Series Aluminum Tail Control Link V2 Upgrades
- (2) 3x10x4mm Radial Ball Bearings
- (4) 2x5x2.5mm Flanged Radial Ball Bearings
- (2) 3x0.4x12mm Button Head Socket Head Cap Screws (Class 12.9 BP Alloy Steel)
- (2) 2x0.4x8mm Socket Head Cap Screws (Class 12.9 BP Alloy Steel)
- (2) 3mm Flat Washers (Zinc-Plated Alloy Steel)
This product was added to our catalog on June 29, 2010.
This tail upgrade is FANTASTIC. I rebuilt my stock 550E tail again and again but couldn't get the screws tight without it binding. Even when I got close, the loctite would work its way up into the control arm bushings and cause binding, which caused horrible tail oscillations. I put on the control arm upgrade part of this pack (didn't use the tail grip bearings) and the difference was like night and day. The tail works so easily now, with absolutely no binding (and no oscillation). Like I said, fantastic. I've now put about 150 flights on the heli and the tail is still perfect, with all screws tight with no binding. Align needs to include this upgrade standard, because it would eliminate all the bad commentary about the stock tail grip control arms...
Works great on my Trex 800 Pro DFC. The bearings you dont use. When installing make sure you loosen the two screws on the black aluminum part of the tail slider assembly then put the link in and two screw though then retighten the two screws on the slider. I replaced the golden screw on the tail assembly with the same size screw that comes in the kit.
I have a T-Rex 700E V2. I first mounted the original tail parts (bag 700NT2D1), but I wasn't happy at all: the tail grips had quite some play around the feathering shaft and I had control binding at both extremes (although it was basically OK in neutral, although a bit sloppy). So I bought this kit and mounted it. I had some problems with a collar that was a bit too tight to fit in the control arm (poor tolerances?), but it was possible to fix with careful use of a fine hand-file, a small screw through the collar and a Dremel. The rest of the parts were fine, I put in the radial ball bearings as well. The difference was truly notable: smooth and completely binding-free operation over the whole control range, including the extremes. And the play in the tail grips was greatly reduced (not completely, but absolutely most of it). And it was possible to tighten all screws tightly (which was impossible with the original parts without excessive binding). So considering the price, I recommend this kit. I deduct one star for the tight collar and for the fact that you have to taper the tail grips connection arms to avoid chafing against the outer parts of the ball bearings (refer to http://www.kdedirect.com/files/KDE_Direct_TREX_Series_Perfor- mance_Tail_Upgrade_V2_Design4.pdf).
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