Today's Message Index:
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1. 05:36 AM - grease fittings (gary)
2. 05:55 AM - Re: Investigating vibration! (gary)
3. 06:36 AM - Re: grease fittings (Don Walker)
4. 07:02 PM - Re: Investigating vibration! (gary)
Message 1
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-0.0 BAYES_44 BODY: Bayesian spam probability is 44 to 50%
--> Stratus-List message posted by: "gary" <FlyinK@Efortress.com>
Don,
Could you send pictures and/or details on your grease fitting
installation?
Thanks,
Gary
----- Original Message -----
From: "Don Walker" <d3dw@msn.com>
Subject: Re: Stratus-List: N601EZ is running with a Saturn in tow.
> --> Stratus-List message posted by: "Don Walker" <d3dw@msn.com>
>
> Likewise, my light stays on until about 1800 rpm and the voltage shows
12.4. When the light goes off, the voltmeter jumps to 14.
>
> My bearings used to be warm. Since I put in the grease fitting on the
upper hub, they stay cool to the touch. Don Walker HDS
> ----- Original Message -----
> From: Bill Morelli
> To: stratus-list@matronics.com
> Sent: Thursday, May 06, 2004 9:39 PM
> Subject: RE: Stratus-List: N601EZ is running with a Saturn in tow.
>
>
> --> Stratus-List message posted by: "Bill Morelli" <billvt@together.net>
>
> Larry,
>
> My redrive assembly gets hot. I believe it's just heat from the engine
> being transferred to the redrive and not the bearings heating up. Mine
gets
> hot to the touch but not so hot that you can't leave you hand on it.
>
> > I notice that the redrive bearings are very warm to the touch and the
> belt is 1/8"
> > deflection at 20 lbs.
> >
> > Has anyone ever found the bearings to be cool while driving
> > a prop or do they all get hot when running?
>
> My volt meter (analog) on my panel shows close to 14 volts when the
> alternator light is off. When I start my engine, the alt light stays on
> until I get the rpm up around 2000 then the light goes off. The volts
jump
> from just over 12 volts to closer to 14 volts. Once the light goes off,
it
> stays off at even at low rpm. This having to run the engine up to 2000
to
> get the alt light off has been seen by other Stratus owners in the past.
>
> > My EIS Volts says the alternator is doing 12.4 at 1800
> > rpms but I'm not sure what it should be reading at this point.
>
> Bill
>
>
Message 2
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| Subject: | Re: Investigating vibration! |
--> Stratus-List message posted by: "gary" <FlyinK@Efortress.com>
> I then added a more sensitive vibration indicator. I took a long ty-wrap
> and taped it to the top of one of the bing air cleaners so it was sticking
> straight up in the air.
- good idea, I'll have to try that too.
> The question I have about dynamic balancing is. It is my understanding
that
> the dynamic balance is done at the cruise RPM and since I don't have a
> vibration at cruise (4400 - 4800) will my vibration at 3500 be taken care
> of if it is indeed the prop?
- last time I asked to take a few readings but he only wanted to do it at
cruise. Next time, I'm going to tell him that I absolutely want readings
thru the rpm range. I'd like to plot the vectors and see how they add up.
You get a reading for what the vibration level is - mine went from .12 to
.04 after one itteration of taking readings and adding weight, he said he
usually does it 3 times but that was so good he stopped. When he captures a
reading at an rpm, the handheld computer thing gives him what I'm calling a
vector - a certain weight to place at so many degrees from the reference
(pice of reflective tape on the back of a prop blade). In my case, I think
it was 7 grams at 120 degrees or something. 120 degrees was between prop
bolts so he split the difference and put 3.1 grams of washers on two prop
bolts. What I'd like to see is a plot of a bunch of readings - each reading
would be a line going out from the center. The line would go out in the
direction of how many degrees from the reference, and the length of the line
would represent how much weight to add. I guess each one would have to be
labelled with what the vibration level was at that reading too. Then it
would be interesting to see if you could average these and put one weight in
the average direction. I'm not sure if this would be any better that doing
three itterations of readings and adding weights but I'd like to try it. I
think I'll call the company who makes the balancing equipment and talk to
them. It made a huge difference but I know it can be used to make it even
better. The problem is, it takes time and the A&P has a row of mooneys and
twins to fix instead of fiddling with a little homebuilt.
- anyone interested in splitting one of these dynamic balancers if they are
anywhere near affordable? I'll find out how much they are when I call them.
Gary
Message 3
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| Subject: | Re: grease fittings |
Seal-Send-Time: Sat, 8 May 2004 08:34:00 -0500
--> Stratus-List message posted by: "Don Walker" <d3dw@msn.com>
Yeah, I'll get a pic and send it to pass around. don do not archive
----- Original Message -----
From: gary
To: stratus-list@matronics.com
Sent: Saturday, May 08, 2004 7:32 AM
Subject: Stratus-List: grease fittings
--> Stratus-List message posted by: "gary" <FlyinK@Efortress.com>
Don,
Could you send pictures and/or details on your grease fitting
installation?
Thanks,
Gary
----- Original Message -----
From: "Don Walker" <d3dw@msn.com>
To: <stratus-list@matronics.com>
Subject: Re: Stratus-List: N601EZ is running with a Saturn in tow.
> --> Stratus-List message posted by: "Don Walker" <d3dw@msn.com>
>
> Likewise, my light stays on until about 1800 rpm and the voltage shows
12.4. When the light goes off, the voltmeter jumps to 14.
>
> My bearings used to be warm. Since I put in the grease fitting on the
upper hub, they stay cool to the touch. Don Walker HDS
> ----- Original Message -----
> From: Bill Morelli
> To: stratus-list@matronics.com
> Sent: Thursday, May 06, 2004 9:39 PM
> Subject: RE: Stratus-List: N601EZ is running with a Saturn in tow.
>
>
> --> Stratus-List message posted by: "Bill Morelli" <billvt@together.net>
>
> Larry,
>
> My redrive assembly gets hot. I believe it's just heat from the engine
> being transferred to the redrive and not the bearings heating up. Mine
gets
> hot to the touch but not so hot that you can't leave you hand on it.
>
> > I notice that the redrive bearings are very warm to the touch and the
> belt is 1/8"
> > deflection at 20 lbs.
> >
> > Has anyone ever found the bearings to be cool while driving
> > a prop or do they all get hot when running?
>
> My volt meter (analog) on my panel shows close to 14 volts when the
> alternator light is off. When I start my engine, the alt light stays on
> until I get the rpm up around 2000 then the light goes off. The volts
jump
> from just over 12 volts to closer to 14 volts. Once the light goes off,
it
> stays off at even at low rpm. This having to run the engine up to 2000
to
> get the alt light off has been seen by other Stratus owners in the past.
>
> > My EIS Volts says the alternator is doing 12.4 at 1800
> > rpms but I'm not sure what it should be reading at this point.
>
> Bill
>
>
Message 4
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| Subject: | Re: Investigating vibration! |
--> Stratus-List message posted by: "gary" <FlyinK@Efortress.com>
> The question I have about dynamic balancing is. It is my understanding
that
> the dynamic balance is done at the cruise RPM and since I don't have a
> vibration at cruise (4400 - 4800) will my vibration at 3500 be taken care
> of if it is indeed the prop?
Bill - this is from the Eggenfelner list ...
Regarding the MT props, I have found that 3500 RPM is the best balance RPM
and that results better than 0.040 should be obtained.
Jan
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