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HomeAircraftHelicopterMain Discussion › dampeners ?
02-09-2006 11:23 PM  12 years agoPost 1
Big R

rrNovice

ORLINDA ,TN

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i have a raptor 50v2 and i am using red dampeners it has the
mav metal head i was thinking about getting some carbonxtreme
or infinavation what do you think is one any better than the
other thanks

raptor 50
hyper 50
gy 502
cymp2

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02-10-2006 12:06 AM  12 years agoPost 2
joeyM

rrApprentice

langhorne, pa

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I have the same setup and am using the carbon extreme ones--the only thing i can tell you is i really like 'em.........joe

cq cq cq de ka3cnc 30 or 40 mtr cw

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02-10-2006 01:08 AM  12 years agoPost 3
Yug

rrMaster

UK. Herts

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I tried both carbon xtreme and infinivation. I found the Crabon Xtreme orings tended to wear quite quickly. The infinivation dampers caused nodding problems at HS lower than 2000 but were very good with high HS. Funny thing is that I'm now running shimmed reds and rather like them.
QuickUK head.

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02-10-2006 02:53 AM  12 years agoPost 4
HELILAB

rrApprentice

Sunny Miami Lakes, Florida 33016

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I had used both the c.e. and ifinivation and I will tell you in a 50 size heli I rather use the red ones from t.t. with this dampers the heli tends to occilate in certain manuevers like funnels or when you lower the head speed, save your $ and buy 30% fuel

Mario

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02-10-2006 08:43 AM  12 years agoPost 5
Yug

rrMaster

UK. Herts

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HELILAB - what HS were you running ?

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02-10-2006 08:46 AM  12 years agoPost 6
DOKEY

rrProfessor

Northamptonshire UK

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Yup agree, I prefer the TT Reds.

Ryan.

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02-10-2006 01:38 PM  12 years agoPost 7
HELILAB

rrApprentice

Sunny Miami Lakes, Florida 33016

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Im runing 1950 governed with full metal head, in my 90 s.e. the infinavation did made a big difference

Mario

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02-10-2006 02:14 PM  12 years agoPost 8
Yug

rrMaster

UK. Herts

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Ah well, infinivations in the 90 is a different kettle of fish altogether. Love 'em. Crisp, direct but good soft hovering. They definately got the balance right between the o-ring size/duro' and the core material properties.

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02-10-2006 03:54 PM  12 years agoPost 9
BarracudaHockey

rrMaster

Jacksonville FL

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I'm surprised to see you guys dogging on the infinivation dampeners, I have them in my R50 w/ Mav head and rather like them.

Andy
AMA 77227
http://www.jaxrc.com

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02-10-2006 03:58 PM  12 years agoPost 10
Yug

rrMaster

UK. Herts

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barracudahockey - no complaints in my 90, just my 50. What HS are you running and have you any shims ?

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02-10-2006 04:22 PM  12 years agoPost 11
BarracudaHockey

rrMaster

Jacksonville FL

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No shims, 1750 and 2000

Andy
AMA 77227
http://www.jaxrc.com

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02-10-2006 04:37 PM  12 years agoPost 12
Yug

rrMaster

UK. Herts

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That's interesting. At 1750 in my XeroG, it was rolling around alot - it was quite scary. However, the rest of the machine is so damn stiff that it must have been righ on a resonant cusp. Which machine is your 50 ?
BTW, I think DOKEY was also a XeroG50.

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02-10-2006 04:44 PM  12 years agoPost 13
DOKEY

rrProfessor

Northamptonshire UK

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Yes it was in my XeroG, and it did seem worse in high G turns, but the worst was with a stretched auto, the nodding was very scary on that setup, on a std R50 with a Quk head it did not seem quite so bad, but was still there.
Maybe I was over fussy on the R50, but the 90 on these dampers is nothing like.

Ryan.

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02-10-2006 04:54 PM  12 years agoPost 14
Yug

rrMaster

UK. Herts

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i mentioned this infinivation problem to RealRaptors a couple of months back. They were running them on the 600e with NO probs. Their HS, I believe was something like 2200 so it may well have been out of resonance coupled with the fact that the 600e has probably got very different dynamic characteristics - just guessing. The standard Raptor frames probably dampen much of the resonance due to them being far softer than the carbons.

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02-10-2006 05:03 PM  12 years agoPost 15
DOKEY

rrProfessor

Northamptonshire UK

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Maybe I will have to try them in my 600e, I have flown there 600ep before I bought mine, i did notice though that it had TT600 blades on it, which I find too heavy for me. (prefer the NHP razors on the 50)

What blades are you using Guy ?

Ryan.

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02-10-2006 05:07 PM  12 years agoPost 16
Yug

rrMaster

UK. Herts

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SAB600

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02-10-2006 06:44 PM  12 years agoPost 17
BarracudaHockey

rrMaster

Jacksonville FL

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Mine's a Raptor 50 V2, hyper engine, some metal bits from Heliproz. I also have them on my EVO 50 which everyone comments on how smooth it flys.

Andy
AMA 77227
http://www.jaxrc.com

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02-10-2006 11:08 PM  12 years agoPost 18
Big R

rrNovice

ORLINDA ,TN

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i have not heard of shimming the dampeners how do you do this
and does it make the head stiffer

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02-11-2006 01:20 AM  12 years agoPost 19
Yug

rrMaster

UK. Herts

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There is a collar that sits between the blade grip bearing and the damper. If a thin washer (or shim) is placed between the collar and the damper, then it will be compressed a wee bit more and consequently stiffen up the damper. It's basically like using a harder durometer rubber which allows more direct input from the feathering shaft to the hub so crispens up performance at the expense of soft hovering. The whole thing gets more twitchy. For these full rampers, the compression is progressive. This is where in theory, the infinivation dampers win, because they have a very hard core material which is pretty much incompressible (very high duro). O rings fit around the core, and becuase they are relatively thin and compressible, it allows the feathering shaft to flex in the hub to a certain degree before the o ring can compress no more. It is this narrow window of compressability that allows the infinivation (and carbon xtreme) dampers to provide good hovering qualities; however as soon as any more extreme input is given, the o rings are at full compression so the the hub (and heli) will respond more immediately.
Hope this makes sense.

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