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View Full Version : A small warning about HDX300 woodie blades on your CPP


slikrx
04-16-2007, 09:41 PM
I am still trying to get my CPP to hover well after installing a G90 and a DD tail, and it's been a handful.

A couple weeks ago I went down a bit hard, at a wonky angle on concrete. Had a bad boomstrike that broke the tail motor & fin clean off and broke some other stuff.

Then, after FINALLY getting it all repaired, I tried to fly it a bit again this weekend. 2 short flights and I've got a bucket of parts again.

This time it was a a pretty mild crash/hard landing, but the blades hit the tail boom, (which broke the frame) and again broke off the tail motor & fin.

Prior to using the HDX blades, I had several minor crashes that didn't break a single thing. Since changing over to the HDX blades, pretty much every crash/hard landing has led to me needing some new parts.

So, why am I warning about the HDX blades? Well, per pair they weigh 5-7 grams more than the stock eflite blades, AND they have a 1mm wider hole.

This leads to more mass & energy so the strikes are that much worse. And because the mounting hole is larger, the blades can slip/slide/move around a lot more so that they flail around more and can hit more things.

Hitting more things, with more energy is not a good combo.

So, I removed the HDX blades from my Compy Frankenchopper (still unflown) and picked up 2 pair of eflites. (I will fly this thing, and hopefully, enjoy it)

And then I ordered a TRex 450.

I may try to fix the little bugger later (I bought the parts) but, with my lousy skills, the frustration is finally getting to me.

Buzzkill
04-16-2007, 10:12 PM
Man that sux. Sorry to hear about the bad luck.

carlo_the_wonder_frog
04-16-2007, 10:31 PM
Thats how it goes, sometimes you have 50 flights with some rolls and inverted thrown in and then one day you crash, u fix and crash right away again, you fix and crash yet again. You become reluctant to fly after a few crashes in a row, eventually you just say screw it and go fly the best you ever have and enjoy it the whole time, no crashes.

I have to agree with you about the blades, more weight is more damage potential. Usually the boom gets broken by the blades slicing through it, a sloppy blade is more likely to chop the boom. You can also replace your O rings in the head with firmer ones and maybe a couple of shims, that helps keep the blades from hitting the boom, but it also makes the cyclic controls crisper and faster.

Good luck on the rebuild, and may your next flight be a success.

slikrx
04-17-2007, 12:52 AM
Thanks for the habit/freak support... :hug:

The weird thing is that the boom itself is still solid. :dontknow

I was having better luck flying it bone stock with the geared tail motor.

Ah well! :smokin: