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wkma7six · 02-13-2013, 12:29 PM

Just installed the UNi ball that is included with the kit. It appears to have split the hole open on tail bell crank lever! I guess that's why the manual indicates to use CA glue to hold it together? I'm hoping this doesn't come apart in flight since both the sides of the hole are split now right at the mold seam. I'm going to wrap this with some Kevlar thread to reinforce it before a test flight. For some that can't understand what I'm talking about, I'll adds pics later since I can't do it from my phone right now.

OK, this is what I was talking about. Took pics with phone during the build. You can barely see the mold part lines (easier to see on your own part) and the weak points where it has split on both sides.

Here it is temporarily wrapped and bandaged with Kevlar thread and CA to hold it together till I can get a replacement bell crank.

VonRecktofen · 02-13-2013, 02:05 PM

That can't be good...Pre drilled hole is prolly a tad too small for that thread on the uniball.
I'll prolly ream the hole abit with a drill bit, or atleast use an exacto knive to widen the opening some before threading it in...
Franz in NJ

wkma7six · 02-13-2013, 04:28 PM

I had reamed the hole open a bit, but it didn't split right upon screwing down. It split when I set it aside. I grabbed the unit for the next phase of assembly and noticed it.

alexmit · 02-13-2013, 04:32 PM

The CA is used to prevent the threads from backing out. I would not fly with that crack even though it is mended. I suggest you contact your dealer to get a replacement.

LL-Cool-T · 02-13-2013, 05:01 PM

Quote:

Originally Posted by alexmit

The CA is used to prevent the threads from backing out. I would not fly with that crack even though it is mended. I suggest you contact your dealer to get a replacement.

I agree...dont fly that...if it fails youll lose your heli.

Thunder Fighter · 02-14-2013, 03:20 AM

I like to run a tap down to start holes in parts like this. I keep a 2mm, 2.5mm and 3mm tap on hand for this. I wonder if anyone else has had this problem or if it just a bad part.

//Dennis.

Chris Nifty · 02-14-2013, 03:32 AM

+1 for the tap

Varelco · 02-14-2013, 06:55 AM

Thanks for the heads up wkma7six!

I'll probably run a drill bit down it if its tight, unfortunately i have no taps

Bert Kammerer · 02-14-2013, 08:26 AM

We had 27 pre-production kits built and flown and I personally built 3, plus in Italy they built 3 or 4, plus Pascal's kits and Kyle's kits, I am guessing over 40 total kits, never saw this issue. Must be a defective part from the vendor, truly sorry.

We'll get you squared away!

OICU812 · 02-14-2013, 12:30 PM

Bert I think you meant "squared away"

Users should always IMO not force anything in and look for tolerances. Like Bert says though you may have just got a bad bit is all.

vertico · 02-14-2013, 01:16 PM

Quote:

Originally Posted by Bert Kammerer

....Must be a defective part from the vendor, truly sorry.

We'll get you scared away!

Yeah you'll be running scared when the tail lets go!

Totally joking! I know its a typo... Auto correct is evil and funny like that! I'm sure SAB will fix you up

aviator493 · 02-14-2013, 01:53 PM

Quote:

Originally Posted by Bert Kammerer

We'll get you scared away!

Ha, I don't think scaring him away is going to help sales, Bert!!!

wkma7six · 02-14-2013, 02:24 PM

Think he meant squared away.... LOL

SAB has excellent customer service and follow ups to parts updates in past experience. Even through their dealers!

Bert Kammerer · 02-14-2013, 02:51 PM

hahahahaha Good catch guys

Of course, meant squared.

DominicD · 02-14-2013, 02:56 PM

The guys at my club joke that if my tail flew off i wouldn't even notice

02-13-2013, 12:29 PM	#1 (permalink)
wkma7six Registered Users Join Date: Aug 2006	Be careful with the plastic tail bell crank lever! Just installed the UNi ball that is included with the kit. It appears to have split the hole open on tail bell crank lever! I guess that's why the manual indicates to use CA glue to hold it together? I'm hoping this doesn't come apart in flight since both the sides of the hole are split now right at the mold seam. I'm going to wrap this with some Kevlar thread to reinforce it before a test flight. For some that can't understand what I'm talking about, I'll adds pics later since I can't do it from my phone right now. OK, this is what I was talking about. Took pics with phone during the build. You can barely see the mold part lines (easier to see on your own part) and the weak points where it has split on both sides. Here it is temporarily wrapped and bandaged with Kevlar thread and CA to hold it together till I can get a replacement bell crank. Last edited by wkma7six; 02-13-2013 at 01:43 PM..

02-13-2013, 02:05 PM	#2 (permalink)
VonRecktofen Registered Users My HF Map location Join Date: May 2006	That can't be good...Pre drilled hole is prolly a tad too small for that thread on the uniball. I'll prolly ream the hole abit with a drill bit, or atleast use an exacto knive to widen the opening some before threading it in... Franz in NJ __________________ The Helifreak formerly known as Charliedontsurf Goblin 500Mini Vbar DX8 TRex500 Ikon DX8 Warp360 Ikon/Brain DX8 Blade m350QX DX8 Blade mCPX BL DX8 Assistant to the assistant manure spreader at Middle Creek Stables, LLC

02-13-2013, 04:32 PM	#4 (permalink)
alexmit Registered Users Join Date: Jan 2007	The CA is used to prevent the threads from backing out. I would not fly with that crack even though it is mended. I suggest you contact your dealer to get a replacement. __________________ SAB USA Factory Pilot/Field Rep. Pulse Battery USA Field Rep. BK Servo Team Pilot. Team Spartan USA. Canomod USA Field Rep.

02-14-2013, 03:20 AM	#6 (permalink)
Thunder Fighter Registered Users Join Date: Jul 2007 Location: Melb, Oz	I like to run a tap down to start holes in parts like this. I keep a 2mm, 2.5mm and 3mm tap on hand for this. I wonder if anyone else has had this problem or if it just a bad part. //Dennis. __________________ soXos: Strike 8.1 - Strike 7.1 Light - Strike 6.1 : Goosky: RS7 - RS4 - S2 - S1 soXos DB7 nightflyer : Jeti DS-16 & DS-12 I am www.soxosaustralia.com.au \| soXos helis \| 1st-RC Products \| EGODRIFT motors \| Goosky helis \| Spinblades

02-14-2013, 03:32 AM	#7 (permalink)
Chris Nifty Registered Users Join Date: Dec 2011	+1 for the tap __________________ Mini Protos, Voodoo 400, Protos 380, Protos Leggero 700 & 700X, Diabolo 700

02-13-2013, 04:28 PM	#3 (permalink)
wkma7six Registered Users Thread Starter Join Date: Aug 2006	I had reamed the hole open a bit, but it didn't split right upon screwing down. It split when I set it aside. I grabbed the unit for the next phase of assembly and noticed it.

02-14-2013, 06:55 AM	#8 (permalink)
Varelco Registered Users Join Date: Jun 2012	Thanks for the heads up wkma7six! I'll probably run a drill bit down it if its tight, unfortunately i have no taps

02-14-2013, 08:26 AM	#9 (permalink)
Bert Kammerer Registered Users Join Date: May 2005	We had 27 pre-production kits built and flown and I personally built 3, plus in Italy they built 3 or 4, plus Pascal's kits and Kyle's kits, I am guessing over 40 total kits, never saw this issue. Must be a defective part from the vendor, truly sorry. We'll get you squared away! __________________ Bert Kammerer http://www.bertrc.com/ Last edited by Bert Kammerer; 02-14-2013 at 02:51 PM..

02-14-2013, 12:30 PM	#10 (permalink)
OICU812 Registered Users My HF Map location Join Date: Oct 2005 Location: Grande Prairie, Alberta	Bert I think you meant "squared away" Users should always IMO not force anything in and look for tolerances. Like Bert says though you may have just got a bad bit is all. __________________ ...Once upon a time there were Nitros, flybars & frequency pins...Shawn

02-14-2013, 02:24 PM	#13 (permalink)
wkma7six Registered Users Thread Starter Join Date: Aug 2006	Think he meant squared away.... LOL SAB has excellent customer service and follow ups to parts updates in past experience. Even through their dealers!

02-14-2013, 02:51 PM	#14 (permalink)
Bert Kammerer Registered Users Join Date: May 2005	hahahahaha Good catch guys Of course, meant squared. __________________ Bert Kammerer http://www.bertrc.com/

02-14-2013, 02:56 PM	#15 (permalink)
DominicD The Capi My HF Map location Join Date: Oct 2006	The guys at my club joke that if my tail flew off i wouldn't even notice __________________ Spreading capibara awareness since 2006

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