Trex 250 Pro DFC Tail Pitch Slider

[jbewley]

There is a small screw in the blade grip hub, that secures the grips to the shaft, so the slider can move the blades.

The smallest hex driver I can find is a 1.5 which is too big. What do you use to tighten this screw??

Jim

[Toocool4]

0.9mm, comes in the kit.

[jbewley]

Originally Posted by Toocool4

1.3mm, comes in the kit.

Mine came with a hex and a screw driver, but the hex will not fit this screw for some reason.

Jim

[nflanagin]

.9mm

Align sells a set for the 250 - a .9mm and a 1.3mm. The handles are so small that it was difficult to wrench on the heli. Thorp also makes that size which work much better.

[Toocool4]

Okay, i use this one

[jbewley]

Originally Posted by Toocool4

Okay, i use this one

Thank you all very much. Just ordered a set.

Jim

[Toocool4]

Cool, it's good for the skids bolt as well.

[jbewley]

Another question concerning this slider.

I got the .09 wrench and tightened the set screw, using Loctite. However it still slips, causing me to lose the tail. It is only held in place by friction, not a flat spot or hole, like the main blades.

Has anyone else had this problem and if so, how did you fix it?

Jim

[nflanagin]

Are you talking about the Tail Hub on the Tail Shaft. There is a hole at the end of the shaft - here's a picture for the tail replacement gears:
https://www.helidirect.com/helicopte...t-rex-250.html

If there's no hole, grind a flat spot in with a dremel.

[jbewley]

Originally Posted by nflanagin

Are you talking about the Tail Hub on the Tail Shaft. There is a hole at the end of the shaft - here's a picture for the tail replacement gears:
https://www.helidirect.com/helicopte...t-rex-250.html

If there's no hole, grind a flat spot in with a dremel.

Thank you, as that explains it. There is no hole in mine. I wondered why there wasn't as that just makes sense.

Jim

[jbewley]

This is odd. I have done some checking and there are two rear drive set ups. One has no hole and one does.

Mine has a small allen screw. Can that be used with the hole or do you need a longer one?

Jim