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Slufoot · 01-30-2009, 05:56 PM

new dampers Now i have a bad head shake at low head speed ????????
i changed the orings for the 1 pice dampers

i thought maybe the main shaft bearings was bad but i changed them today and still the same shake help please when i go to a higher head speed it stops shaking

drewfus · 01-30-2009, 05:59 PM

what about the blades?

Slufoot · 01-30-2009, 06:22 PM

NEW BLADS and flew good with the blades i changed the dampers and now shake i don't think its the blades i have carbon blades this helie has been babied never even hit the ground hard just figure 8s and hovering

ZephanRC · 01-30-2009, 06:25 PM

Not sure but can this be caused by not enough lube on the dampers? Does it shake after you have spooled up to a higher headspeed and come back to a low headspeed (idle-up back to normal curve lets say) or only while spooling up?

Slufoot · 01-30-2009, 06:33 PM

it shakes after its spooled up and hover for a wile or when i come down from flight mode 2 or 3

ken22golf · 01-30-2009, 06:35 PM

Which 1 piece dampeners do you have?

Very stiff dampeners are made for high HS and I think they do wobble at low HS.

R0t0R · 01-30-2009, 07:20 PM

Put some lube on the dampers and it may help, but stiff dampers can cause that at low headspeeds. I run Trueblood dampers on mine and the heli does shake some on spool up. I only fly in idle up now and am running a Scorpion -8 motor so never notice it after I hit idle up.

Slufoot · 01-30-2009, 08:08 PM

i am using these http://www.helidirect.com/product_in...oducts_id=4678 hope the link is working

Slufoot · 01-30-2009, 08:12 PM

i will put the 325 woodys on tomaroe and see my helie fly so good with the oring dampers maby i should go back with them

helijack · 01-30-2009, 11:37 PM

You DO know those dampers are for the V2 ONLY, right?

Slufoot · 01-31-2009, 06:49 PM

Yes i have a v2
OK so to day i changed the blades back to the 325 pro woodies
it still shakes like hell but i have learned that the it only starts to shake when i push and pull the elevator making the nose go up and down it starts shaking ... if i jump up to a difrent flight mode it will quit shaking
I have cked the linkage i have went over every thing looks good
new main shaft bearings new blades lubed the dampers ...

maby a servo is going bad HELP

Slufoot · 01-31-2009, 07:24 PM

its gonna be a long night trying to figure this out

R0t0R · 01-31-2009, 07:30 PM

Do you still have the old dampers? If so, put them back in and see if it still shakes. The dampers may of may not be your problem, but if they are the only things you changed prior to the problem showing up, might as well rule them out.

Slufoot · 01-31-2009, 07:45 PM

i will change the dampers back tonight its the only thing i changed i dont understand how the stiffer dampers would cause this

R0t0R · 01-31-2009, 07:49 PM

I know it seem strange, but stiff dampers can cause issues at lower head speeds. I clipped this from the page at Readyheli for the Trueblood super hard dampers.

**These dampeners are intended for head speeds of 2700 RPM or greater.

Slufoot · 01-31-2009, 07:50 PM

swapping them right now

satchy · 01-31-2009, 07:53 PM

make sure your main blades are not too tight also check your main shaft feathering spindle and main head block for being truly straight if that fails try another set of main blades also have you balanced your blades checked tracking

hope this helps

delgado · 01-31-2009, 07:57 PM

is the tracking ok with the new dampners?

Slufoot · 01-31-2009, 08:03 PM

all this stuff is new .Maby the blades is to tite , but i have ruled out the blades being out of balance i have 2 sets both sets do the same .... you haft to consider that it only starts shaking when i jerk the nose up and down like flying foward and pulling the nose up for backward flying it shakes so bad that its just a mater of time befor it slings the helie a part

Slufoot · 01-31-2009, 08:04 PM

tracking is perfect

01-30-2009, 05:56 PM	#1 (permalink)
Slufoot Join Date: Mar 2008	New dampers new dampers Now i have a bad head shake at low head speed ???????? i changed the orings for the 1 pice dampers i thought maybe the main shaft bearings was bad but i changed them today and still the same shake help please when i go to a higher head speed it stops shaking

01-30-2009, 06:25 PM	#4 (permalink)
ZephanRC Registered Users My HF Map location Join Date: Oct 2007	Not sure but can this be caused by not enough lube on the dampers? Does it shake after you have spooled up to a higher headspeed and come back to a low headspeed (idle-up back to normal curve lets say) or only while spooling up? __________________ Trex600N & Trex450SE. Dang! Another Radio Glitch!

01-30-2009, 06:35 PM	#6 (permalink)
ken22golf Registered Users My HF Map location Join Date: Sep 2008	Which 1 piece dampeners do you have? Very stiff dampeners are made for high HS and I think they do wobble at low HS. __________________ 8S Trex 500 ESP

01-30-2009, 11:37 PM	#10 (permalink)
helijack Registered Users My HF Map location Join Date: Apr 2007	You DO know those dampers are for the V2 ONLY, right? __________________ T-Rex 450 SE V1, HS65MG, 9650, 325 CF, AR6100, 2200 FlightMax, 430XL/BL35X, GY401 ...SOLD T-Rex 500ESP...SOLD DX7...Still for sale M.A.A.C. 78596 www.helicalgary.com Ex President - Calgary RC Heli Club

01-31-2009, 07:53 PM	#17 (permalink)
satchy Registered Users My HF Map location Join Date: Jul 2008	make sure your main blades are not too tight also check your main shaft feathering spindle and main head block for being truly straight if that fails try another set of main blades also have you balanced your blades checked tracking hope this helps __________________ *"So What is 3D Flying"* Definition: 3D as applied to current rc helicopter flying is any maneuver that to be performed requires the constant harmonized input of three or more controls simultaneously while the maneuver is taking place.

01-30-2009, 05:59 PM	#2 (permalink)
drewfus Registered Users My HF Map location Join Date: Dec 2008	what about the blades?

01-30-2009, 06:22 PM	#3 (permalink)
Slufoot Thread Starter Join Date: Mar 2008	NEW BLADS and flew good with the blades i changed the dampers and now shake i don't think its the blades i have carbon blades this helie has been babied never even hit the ground hard just figure 8s and hovering

01-30-2009, 06:33 PM	#5 (permalink)
Slufoot Thread Starter Join Date: Mar 2008	it shakes after its spooled up and hover for a wile or when i come down from flight mode 2 or 3

01-30-2009, 07:20 PM	#7 (permalink)
R0t0R Registered Users Join Date: Jun 2008	Put some lube on the dampers and it may help, but stiff dampers can cause that at low headspeeds. I run Trueblood dampers on mine and the heli does shake some on spool up. I only fly in idle up now and am running a Scorpion -8 motor so never notice it after I hit idle up.

01-30-2009, 08:08 PM	#8 (permalink)
Slufoot Thread Starter Join Date: Mar 2008	i am using these http://www.helidirect.com/product_in...oducts_id=4678 hope the link is working

01-30-2009, 08:12 PM	#9 (permalink)
Slufoot Thread Starter Join Date: Mar 2008	i will put the 325 woodys on tomaroe and see my helie fly so good with the oring dampers maby i should go back with them

01-31-2009, 06:49 PM	#11 (permalink)
Slufoot Thread Starter Join Date: Mar 2008	Yes i have a v2 OK so to day i changed the blades back to the 325 pro woodies it still shakes like hell but i have learned that the it only starts to shake when i push and pull the elevator making the nose go up and down it starts shaking ... if i jump up to a difrent flight mode it will quit shaking I have cked the linkage i have went over every thing looks good new main shaft bearings new blades lubed the dampers ... maby a servo is going bad HELP

01-31-2009, 07:24 PM	#12 (permalink)
Slufoot Thread Starter Join Date: Mar 2008	its gonna be a long night trying to figure this out

01-31-2009, 07:30 PM	#13 (permalink)
R0t0R Registered Users Join Date: Jun 2008	Do you still have the old dampers? If so, put them back in and see if it still shakes. The dampers may of may not be your problem, but if they are the only things you changed prior to the problem showing up, might as well rule them out.

01-31-2009, 07:45 PM	#14 (permalink)
Slufoot Thread Starter Join Date: Mar 2008	i will change the dampers back tonight its the only thing i changed i dont understand how the stiffer dampers would cause this

01-31-2009, 07:49 PM	#15 (permalink)
R0t0R Registered Users Join Date: Jun 2008	I know it seem strange, but stiff dampers can cause issues at lower head speeds. I clipped this from the page at Readyheli for the Trueblood super hard dampers. **These dampeners are intended for head speeds of 2700 RPM or greater.

01-31-2009, 07:50 PM	#16 (permalink)
Slufoot Thread Starter Join Date: Mar 2008	swapping them right now

01-31-2009, 07:57 PM	#18 (permalink)
delgado Join Date: Aug 2008	is the tracking ok with the new dampners?

01-31-2009, 08:03 PM	#19 (permalink)
Slufoot Thread Starter Join Date: Mar 2008	all this stuff is new .Maby the blades is to tite , but i have ruled out the blades being out of balance i have 2 sets both sets do the same .... you haft to consider that it only starts shaking when i jerk the nose up and down like flying foward and pulling the nose up for backward flying it shakes so bad that its just a mater of time befor it slings the helie a part

01-31-2009, 08:04 PM	#20 (permalink)
Slufoot Thread Starter Join Date: Mar 2008	tracking is perfect

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