New head dampeners

[BobbySmith]

Any body have a problem wiht the NEW NEW Head dampeners getting soft after a few flights?

Bobby

[BobbySmith]

Well i guess i will share my experience!
I put these new dampenrs in 5 flights later Boom stirke destroyed a good bit fo the helicopter
When i talked to Min air (Tim) I was told we are putting way to much power in these machines and stuff like this is going to happen! the thing is i havent had a problem wiht the 2 dot 90 durometer dampeners
Any ways i was all but laughed @ when i talked to Tim


Bobby

[cdrking]

Isn't it a privilege to own a MA model? :roll:

Jeff

[Russ McC]

Well frankly moor power is not always a bad thing, what ever can be done to keep the head from slowing/bogging will help prevent boom strikes, moor power would help in this case so long as the strike was not caused by a link failing from binding or the like. If the disk simply deflected to hit the boom then that would be or could be pilot error, Min Air models are less prone to this then some other makes but it can be done on demand with ease no manner what dampers you have. If it did this in a hover or FF than maybe it had something fail, if you where recovering backwards inverted from a tail slide or bogging during a puro flip or generally yanking aft cyclic while moving fast backward you may have caused it, these things must be done with some care to prevent boom strikes no manner how hard the head is dampened.

Not saying you caused it, I was not there, just food for thought, if you did cause this then you will want to learn from it to prevent it in the future.

[BobbySmith]

Yea Russ there was no bogging ! I know what causes boom strikes Kind of odd i change head dampening them hava problem




Bobby

[Russ McC]

Sorry man, don't know, never used the new dampers, I don't even use the old 90 dampers just the stock ones that come in the kit, I think there 70s but I don,t know. Somthing could have broke but we will never know now, probably all tore up :(

[piromaniac]

Hi Bobby,I have not flown my stratus with the new dampers yet but they do seem to be softer than what I had in there before which was 2 90's and 4 shims(not exactly sure which ones) so I am a bit concerned about a B/S with them.
I may have to go back to what I had.

[Russ McC]

One dumb question, some people lubricate head dampers, on a Min Air model you should not lubricate the dampers, at least not the old ones and I bet not the new ones either. Did you lube them? Lube will make hem deflect much easer.

Also I heard through the grape vine that you where not flying the model, if this is true then the dampers where not the only thing to be changed but the pilot also, are you sure he or she was flying it responsibly? I did this to a friends Raptor 30 one time and it was clearly my fault and I paid the bill.

[BobbySmith]

No lube on them
I was checking out Berts new STRATUS wiht the YS motor so i let him try mine wiht OMI os motor and yes he is a good pilot
O out of no were the thing exploded he was doing large snakes and i just got doing some small snakes with it


There was three of us that witnessed it
As i stated above iam going back to the O ring 90 dampeners

Bobby

[Russ McC]

Ok, what ever the case it is sad to hear. If he was not yanking on the model very heard then it would be more likely something came apart in the head, you can yank pretty heard even with very soft dampening. However a backward traveling snake definitely does create loads that could bring the disk to the boom. Either way sorry!

[BobbySmith]

So true RUSS

[Jerry]

Have you sent the dampeners off to MinAir so they can evaluate them?

Jerry

[misskimo]

:shock:

[BobbySmith]

Iam going to send the whole head if they ask me to


Bobby

[Jerry]

If you are in Daytona, perhaps you can pay MA a visit. Are they deciding what they want you to do? Im a little confused with the 'if they ask me to' part. Call Chris or Tim at MA and maybe they can be looked at.

Are there any MA field reps around you that could perhaps help out and get it to MA for you, or even show Tim or Chris themselves. Trying to think of who MA has in FL.

Jerry

[misskimo]

:lol:

[Jerry]

Tony,

MA has addressed the issue with the production pieces being out of tolerance. There is a new batch available very recently. It would be nice to find out exactly when Bobby got the dampeners and what batch they are from.

Jerry

[BobbySmith]

Jerry these are the latest dampeners iam fully capable of taking this stuff to Minair
you need to read the opening part of the thread


Bobby

[misskimo]

hey , well I bought mine a few months back from Bobby , and Im scared to try them , I hope they fixed the problem , but Im staying with the orings for now , well , well Im forced to since alaska has such a long damn winter

Tony

[Jerry]

Bobby,

Let's all read together.....

When i talked to Min air (Tim) I was told we are putting way to much power in these machines and stuff like this is going to happen! the thing is i havent had a problem wiht the 2 dot 90 durometer dampeners
Any ways i was all but laughed @ when i talked to Tim

Then later on you say

Iam going to send the whole head if they ask me to

Have they asked you to? I keep re-reading and I'm not clear on where that stands.

iam fully capable of taking this stuff to Minair

So....are you? Or did Tim laugh at you and you are not. That is the part I'm unclear of. It would help more people if the problem was taken to MA to be sure that it doesnt happen to others - vs griped about on helifreak and runryder exclusively.

When did you get these dampeners? What date? And from who? Just so we can all be sure what batch we're talking about.

Jerry

[misskimo]

well , I got some that are 2 to 3 months old , what batch is these from?

[BobbySmith]

Jerry iam a dealer i just got these friday before mulberry i have 8 sets i was told how great they were figured i would try a set

The whole head will go there if iam asked to take it other wise it is just to much power i guess! :dontknow

Thats why i posted this to give people a heads up iam almost @ 400.00 dollars on my rebuild and have yet not started to include Minair parts

I tell you what who ever figures out how to straighten a bent up sb 17 will get :D rich :D

Bobby

[BobbySmith]

Tony those are the first batch send them to me and i can get them swapped

I dotn know whats worse watching that sb17 get munched or watching lipos fly threw the canopy on a ION :dontknow tHE COOL PART IS THE LIPOS STILL WORK :smokin:

Bobby

[misskimo]

:?

[Jerry]

well , I got some that are 2 to 3 months old , what batch is these from?

The first batch of production dampeners did indeed have a manufacturing error. They did not meet specified tolerances. We are talking about approximately 20-30 sets. As soon as MinAir became aware of this error, Tim did not send anymore out to dealers. He also began an attempt to bring that 20 - 30 sets back in.

If you purchased your dampeners prior to November 12th or so, you may want to contact MinAir and talk to them about what you have.

Since the November 12th weekend, or very close to it, MinAir began shipping production one piece dampeners again. These are manufactured to the correct MinAir specified tolerance.

So - short version. If you bought or obtained them before mid-November, call MinAir. If you obtained them since....you are fine.

Tony - if you still have those 2-3 month old dampeners - call MinAir tomorrow.

Jerry