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Matty6901 · 11-19-2016, 04:42 PM

I have a Helibug Trex 700 conversion and the tail blades keep breaking at the grips. One set of KBDD and some Radikal plastic blades. The headspeed is set for 1700. This doesn't make sense.

trillian · 11-19-2016, 07:55 PM

So when they break, some of the blade is still in the grips? When this happens do both break at the same time?

akabud · 11-19-2016, 08:03 PM

Plastic blades fatigue and break. Don't run them.

fastflyer20 · 11-19-2016, 09:48 PM

+1, ditch the plastic blades and buy name brand CF blades.

Make sure they are not too tight, tail blades are light and need to fairly easily fling out to the proper position.

Make sure shafts, bearing and grips are in good condition.

Rahulgaba · 11-19-2016, 11:32 PM

I had the same issue , I will find my post and link it here . The issue is in your tail shaft or the tail hub.

kBDD's are quality blades

And yes I broke both KBDD and CF blades on the blade grips . I was baffled !!!

Sent from my iPhone using Tapatalk

Rahulgaba · 11-19-2016, 11:38 PM

https://www.helifreak.com/showthread...highlight=KBDD

Matty6901 · 11-20-2016, 09:11 AM

I will take a close look at the tail and report back.

Matty6901 · 11-20-2016, 04:00 PM

The tail shaft was slightly bent

rbort · 11-20-2016, 04:25 PM

And nice job Rahul

-=>Raja.

Matty6901 · 11-20-2016, 05:18 PM

[ATTACH]IMG_87911.jpg[/ATTACH]

fastflyer20 · 11-20-2016, 06:58 PM

Good find, a new shaft with new bearings are typically is at .001" or less.

When a tail shaft is bent that much indicates that bearings and the hub were damaged too. Tail shaft bearings should also be checked.

Rahulgaba · 11-20-2016, 11:06 PM

Oh yes !! +1 in fastflyers comment .. If you've flown with that shaft, it's damaged your bearings pretty badly!

They might not be gone yet, but they just had a huge chunk of the their life taken away.

To play it safe , bearings should be replaced too

Sent from my iPhone using Tapatalk

11-19-2016, 04:42 PM	#1 (permalink)
Matty6901 Registered Users Join Date: Jul 2009	Tail Blades Keep Breaking? I have a Helibug Trex 700 conversion and the tail blades keep breaking at the grips. One set of KBDD and some Radikal plastic blades. The headspeed is set for 1700. This doesn't make sense.

11-19-2016, 07:55 PM	#2 (permalink)
trillian Registered Users Join Date: Apr 2007 Location: UK, Kent coast	So when they break, some of the blade is still in the grips? When this happens do both break at the same time? __________________ HD Cell 750, RJX Vector, TDR, TDSF, Kasama Dune and Faifa, Minicopter Triabolo 700, Beam Avantgarde, JR E8 leggero, Suzi Laos, Shape 9, Shape S8, Rave 450, TRex 500, Raptor E700, Compass Warp, Steam 700, Spirit, Spartan, Jeti.

11-19-2016, 08:03 PM	#3 (permalink)
akabud Registered Users Join Date: Jan 2010	Plastic blades fatigue and break. Don't run them. __________________

11-19-2016, 09:48 PM	#4 (permalink)
fastflyer20 Registered Users Join Date: Nov 2008	+1, ditch the plastic blades and buy name brand CF blades. Make sure they are not too tight, tail blades are light and need to fairly easily fling out to the proper position. Make sure shafts, bearing and grips are in good condition. __________________ Tom TRM Power CAUTION - my posts are based on my experiences, yours may be different.

11-19-2016, 11:32 PM	#5 (permalink)
Rahulgaba Registered Users My HF Map location Join Date: Feb 2011	Tail Blades Keep Breaking? I had the same issue , I will find my post and link it here . The issue is in your tail shaft or the tail hub. kBDD's are quality blades And yes I broke both KBDD and CF blades on the blade grips . I was baffled !!! Sent from my iPhone using Tapatalk __________________ Goblin Gasser TRM VX310TT Align MJ Design DTS 700N 91 HZ-R 3D Blackout Extreme Gasser #4 MCPX BL 2 iX12 Gaba

11-19-2016, 11:38 PM	#6 (permalink)
Rahulgaba Registered Users My HF Map location Join Date: Feb 2011	https://www.helifreak.com/showthread...highlight=KBDD __________________ Goblin Gasser TRM VX310TT Align MJ Design DTS 700N 91 HZ-R 3D Blackout Extreme Gasser #4 MCPX BL 2 iX12 Gaba

11-20-2016, 09:11 AM	#7 (permalink)
Matty6901 Registered Users Thread Starter Join Date: Jul 2009	Thanks for the help I will take a close look at the tail and report back.

11-20-2016, 04:00 PM	#8 (permalink)
Matty6901 Registered Users Thread Starter Join Date: Jul 2009	Tail shaft bent The tail shaft was slightly bent

11-20-2016, 04:25 PM	#9 (permalink)
rbort Registered Users Join Date: Feb 2005	Voila And nice job Rahul -=>Raja. __________________ MA 1005, Hanson 270, 4717 flts, Spectra-g, Hanson 270, 3672 flts Whiplash-g V1-2, Hanson 300, 2235 flts, Whiplash-g V2, Hanson 300, 1552 flts Whiplash Turbine, TS 45i WSE, 296 flts Jewel on-board Generators, Miniature Aircraft Team Manager

11-20-2016, 06:58 PM	#11 (permalink)
fastflyer20 Registered Users Join Date: Nov 2008	Good find, a new shaft with new bearings are typically is at .001" or less. When a tail shaft is bent that much indicates that bearings and the hub were damaged too. Tail shaft bearings should also be checked. __________________ Tom TRM Power CAUTION - my posts are based on my experiences, yours may be different.

11-20-2016, 11:06 PM	#12 (permalink)
Rahulgaba Registered Users My HF Map location Join Date: Feb 2011	Oh yes !! +1 in fastflyers comment .. If you've flown with that shaft, it's damaged your bearings pretty badly! They might not be gone yet, but they just had a huge chunk of the their life taken away. To play it safe , bearings should be replaced too Sent from my iPhone using Tapatalk __________________ Goblin Gasser TRM VX310TT Align MJ Design DTS 700N 91 HZ-R 3D Blackout Extreme Gasser #4 MCPX BL 2 iX12 Gaba

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