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T-REX 250 › Clones are fun to crash
10-20-2009 11:09 AM  8 years agoPost 1
Evan D

rrApprentice

Charlotte, NC

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The spindle, feathering shaft, on my HK250GT broke in two in flight, blades flung off and straight down she went, coolest crash ever, did about $4 in damage (HK parts dollars)...

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10-20-2009 11:12 AM  8 years agoPost 2
Darren Lee

rrElite Veteran

Woodstock, GA

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Let us know how much fun it is when a blade hits your face because the feathering shaft broke in flight.

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10-20-2009 08:54 PM  8 years agoPost 3
helidevil

rrElite Veteran

Brunswick, ME

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PICTURES!!!!

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10-21-2009 01:13 PM  8 years agoPost 4
Evan D

rrApprentice

Charlotte, NC

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Bee, with an attitude like that I can't beleive you fly r/c, you probably don't own a car and wouldn't think of getting on a motorcycle...

I only fly at a club r/c by the AMA safety code so I feel pretty safe about what I do. Also been flying r/c since the 70's (helo's too)...

None the less it was pretty cool. In case you are interested the blades both flew straight out 180 degrees from each other and even though the helo was 20 feet in the air the blades traveled all of about 5-6 feet each and their energy was almost nothing after about a foot or two. They were not flung off doing 200mph and traveling a quarter mile...

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10-21-2009 01:20 PM  8 years agoPost 5
Darren Lee

rrElite Veteran

Woodstock, GA

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Sorry if my post sounded rude.

I just got the impression that you were flying a "clone" to save money on parts but in the process had an in-flight failure which I assumed was the result of a low quality "clone" feathering shaft. I've never heard of this happening on a T-Rex 250, or any other heli for that matter.

Glad no one was hurt but I am quite sure that ejected blades at 4-5000 rpm could be dangerous.

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10-21-2009 02:31 PM  8 years agoPost 6
Evan D

rrApprentice

Charlotte, NC

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Yes it was a clone and did have a feathering shaft failure 99% due to poor quality.. I have a Trex coming in the mail to replace the HK250GT even though damage done was limited to the feathering shaft, flybar, boom, and some links. All, if bought from HK, would be about $4... amazing how cheap their stuff is but yes it's all potentially dangerous and a blade coming off my .91 would have a lot more power behind it.

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10-21-2009 06:31 PM  8 years agoPost 7
Justin Stuart (RIP)

rrMaster

Plano, Texas

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What kind of head speed were you running?

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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10-21-2009 06:43 PM  8 years agoPost 8
Evan D

rrApprentice

Charlotte, NC

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I didn't measure it but it was sounded around 35-3600 or so. The GT flew really well, enough to let me know I would enjoy it. Up until then I thought the 25o size would be too small to enjoy doing 3D with because of it's size.

I have a Turnigy 3800kV motor in it with a 15t pinion and the throttle curves turned down to 80%.

After I posted about the feathering shaft on RCG a few people have said they have had failures too.

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10-21-2009 08:04 PM  8 years agoPost 9
helidevil

rrElite Veteran

Brunswick, ME

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almost every time i crash the spindle breaks apart, like this:

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10-21-2009 08:07 PM  8 years agoPost 10
Darren Lee

rrElite Veteran

Woodstock, GA

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almost every time i crash the spindle breaks apart
Yes, this is very common in crashes on the 250, not in flight.

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