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Esprit Model . Thunder Power RC . Real Raptors

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Compass Knight 50 > Wish i'd stayed with raptors!
 
 
ROTORDISK
New Heliman
Location: London uk

Not at all happy about the knight 3d blade grip bolt snapped where the ball link goes through it. causing a complete rite off what a pile of crap this heli is think the bolts are made from glass what a mess .
just thought i'd share my opinion.
03-19-2008 03:26 PM
 
 
epc2
Senior Heliman
Location: Miami , Fl./S.Dgo.

I also had a Knightmare but with a ball link failure that caused a boom strike and then I was told that it was my fault cuz I was using harder dampers , And funny thing is that I know other people using these dampers without issues . I guess they won't never accept that the kits have some QC issues , it flies great no doubt but that sucks.

epc2.



Team My Wallet.
03-19-2008 04:11 PM
 
 
ROTORDISK
New Heliman
Location: London uk

Mine was where the bolt goes through the blade grip! then you screw the stand off ball to it. I am so mad about it .. was assembled correctly not overtightened and was thread locked. Sorry to hear you had a failure as well mate.
Thought it was the other major player that denied manufactoring problems suppose you have to be carefull who you ALIGN your self with . I dont think its denial over replacement of parts from
the specific company in this case compass i think its associated
parts like radio and engine or blades they dont want to caugh up
for but if they admit a faulty part then it leaves them open to
sort out what else was broken/damaged.
03-19-2008 04:14 PM
 
 
fr8brkr
Senior Heliman
Location: Asheville,NC

You should have ordered the ones with metal bolts.

Problems ? -- Mine are flown in fresh daily
03-19-2008 04:54 PM
 
 
steffgiguere
Veteran
Location: St-Eustache, Quebec, Canada

I'm sorry to hear about your loss. We have 1 guy at our field who has a knight 3D (out of 50) and he seems to like it. He is a very good pilot and does lots of 3D stuff.

I wish I could fly 24/7
03-19-2008 05:06 PM
 
 
the Wasp
rrProfessor
Location: Vt

these bolts usually only brake if they have been over tightened, as any bolt could..

Jim
the wife wont let me get a Monkey !!,,, damm, can't have anything
03-19-2008 06:30 PM
 
 
ROTORDISK
New Heliman
Location: London uk

Hey Jim i have been in engineering and mechanics all of my life i know about torque and stress on bolts. So that was definatly not a factor. Understand your comment though.
03-19-2008 06:52 PM
 
 
Adey_Law
Senior Heliman
Location: Bournemouth, UK

Rotordisk, have you contacted climbout? (the distributer)

Just out of interest what makes you think the bolt snaping caused the crash and wasnt a result of the crash? Its very easy to jump to conclusions but there could well be other factors involved here.

epc2, who told you it was the dampers? I personally think you suffered a faulty link. No matter how good a Company's QC is your bound to get the odd fault slip through the net. Have you talked to your distributer about the issue?

Ade
03-19-2008 07:34 PM
 
 
raptor50luvver
Veteran
Location: southampton UK

I had the same problem with a Raptor,the small screws that hold the ball on the grip are crap.The Knight ones seem pretty solid but i am sure you will get the odd one with any make
03-19-2008 07:37 PM
 
 
epc2
Senior Heliman
Location: Miami , Fl./S.Dgo.

Quote 
epc2, who told you it was the dampers? I personally think you suffered a faulty link. No matter how good a Company's QC is your bound to get the odd fault slip through the net. Have you talked to your distributer about the issue?

Ade

Rodney(Infina Models)Dist. , Yeah I'm sure that it was a faulty link and yeah I talked to him (the dist.) and he didn't admit that it was a faulty link and said that my issue happened because I was using some K&B yellow dampers , but I know that that's just an excuse.

Here's a link to that thread:

http://runryder.com/helicopter/t409751p1/

epc2.

Team My Wallet.
03-19-2008 08:20 PM
 
 
ROTORDISK
New Heliman
Location: London uk

who or what is climout oh i see sorry they sell to shops in the uk yes? no good to me mine was purchased in malaysia so I emailed compass direct and got know reply so gave up. With one blade flapping around cant see it being anything else can you?
The stand of was still in the link and the bolt head still in the grip thanks to the thread lock.
03-19-2008 09:06 PM
 
 
Adey_Law
Senior Heliman
Location: Bournemouth, UK

theres a whole stack of things relating to flying style and setup that can cause a boom strike.

the fact that the ball post was still in the link suggests that it happend when it hit the ground as if it was in the air then the centripetal force would have thrown the ball post.

i have seen grips break in a crash, if you look at the headblock there will be a scratch where the ball hit the head block.

Ade
03-19-2008 10:39 PM
 
 
ROTORDISK
New Heliman
Location: London uk

With respect i am not a belt and braces flyer and can only fly like i do planes so no 3d or tick tock spirals etc. I am also in my late forties so am happy to admit when i make a mistake and crash. I assure you this is not the case. Do i take it you are a sponsored flyer of compass?
03-19-2008 10:50 PM
 
 
Adey_Law
Senior Heliman
Location: Bournemouth, UK

im saying a boom strike can happen for a number of reasons normally setup related. Due to the ball post still being attached to the ball link it suggests it happened when it hit the ground. Do you have a mark on the head block?

And yes, I am invovled in developement, testing and support for compass.

Ade
03-19-2008 11:21 PM
 
 
ROTORDISK
New Heliman
Location: London uk

I appreciate you have a wealth of knowledge on these birds and your assistance with the autopsey ok. My gripe is that i m h o the bolt has failed now my findings with the bolt are. No sign of break due to it having struck another component. There is no hint of any scratch on the head block it self this i have checked following your post. What has most annoyed me is the lack of responce from compass after several weeks of waiting they are no better than align in my oppinion.
03-19-2008 11:32 PM
 
 
Jim-bob
Senior Heliman
Location: Little Hocking OH USA

Rotordisk and epc2

Sorry to hear of your issues. Nothing stinks worse than a part letting go and putting your machine in the ground, I've been there

I don't remember reading any posts where anyone had the bolt that holds the ball link to the main blade grip failing. There must be a zillion of theme in use by now so I would say that is probably an isolated incident. Thats no comfort I'm sure but don't give up on the machine, there are few if any 50's out there that will give you the same smile when your flying

The ball links from the main blade grips down to the mixers are something I have had fail in the past on other machines when banging the sticks. I think the stress is greater on the links the closer you get to the blades. ALL heli manufacturers supply the same size links for the whole heli so I change the links from the mixers up to the grips with a heavy duty 3D link like the ones from Century. These links will NOT come off unless something REALLY serious happens. I also use threaded rods from Quick UK for these links only. This may be overkill but it makes me feel better when the sticks are bending
03-19-2008 11:46 PM
 
 
ROTORDISK
New Heliman
Location: London uk

Hi Jim-bob if it where not for the lack of customer support and they would sort out this issue i would like to carry on with the knight but i feel let down by compass. I am an engineer not a burger flipper at mc donalds so i know what i am talking about. I do understand that parts can and will fail due to a veriety of problems
and as such accept that. I will however remove the other bolt from the other side and take both for testing at an engineering works. I feel that metal fategue may have been the cause and if i am wrong i will make an appology for this post and close it. But if i am right
i'd like to see compass sort this out. But wont hold my breath.
03-19-2008 11:54 PM
 
 
fr8brkr
Senior Heliman
Location: Asheville,NC

Centripetal ???? hmmmm . Ade, I need some help on this one.
Centrifugal

Problems ? -- Mine are flown in fresh daily
03-20-2008 12:00 AM
 
 
epc2
Senior Heliman
Location: Miami , Fl./S.Dgo.

Quote 
im saying a boom strike can happen for a number of reasons normally setup related. Due to the ball post still being attached to the ball link it suggests it happened when it hit the ground. Do you have a mark on the head block?

And yes, I am invovled in developement, testing and support for compass.

Ade

No mark on headblock and there was no problem with the setup , Everything was stock , only the dampers were different as mentioned before.

epc2.

Team My Wallet.
03-20-2008 12:23 AM
 
 
ROTORDISK
New Heliman
Location: London uk

Quote 
No mark on headblock and there was no problem with the setup , Everything was stock , only the dampers were different as mentioned before.

epc2.
sounds farmiliar mine was bog standard with no issues self inflicted or otherwise. Just think we'll be out of luck with regard any kind of help from compass. Just typical of this industry no one is willing to accept there is a problem with thier product or a component. The sad part is its allways the purchaser that suffers the loss where it matters $$$$$$ and to have the confidence to progress.
03-20-2008 12:29 AM
 
 
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Mikado Modellhubschrauber . GrandRC . CanoMod

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Compass Knight 50 > Wish i'd stayed with raptors!
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