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Props?

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dickbutz

Joined: 12 Sep 2010
Posts: 5

Posted: Sun Sep 12, 2010 10:20 am Post subject: Props?

I know that this has most likely been beaten to death but I need help in  choosing a prop...

I had a big ding in my original (63 pitch) Sensenich prop so I bought a new one (a 62 pitch), however I now have the original one at Sensenich being serviced as they said that there was plenty of metal in the prop to cut away and straighten the bad edge (it was only a 1/32 ding and the tip was not touched)...What I need to know is which is the prefered prop for speed the 62 or the 63 pitch or is there not much in it either way as I will change to the fastest one and sell the other.



The interesting thing is that there actually was more metal in the older prop than the newer one, both wider and longer???...Dick

_________________
Dick Butz
1979 Tiger N4532P

flyadive(at)gmail.com
Guest

Posted: Sun Sep 12, 2010 11:46 am Post subject: Props?

Dick:



Go with the 63"

I have a 62" on my O-320 HC and I have no problem with climb on the east coast.

You have an O-360 so 63" should be NO PROBLEM.

 



Barry



On Sun, Sep 12, 2010 at 2:20 PM, dickbutz <dickbutz(at)therock.bm (dickbutz(at)therock.bm)> wrote:

[quote] --> TeamGrumman-List message posted by: "dickbutz" <dickbutz(at)therock.bm (dickbutz(at)therock.bm)>

 

 I know that this has most likely been beaten to death but I need help in  choosing a prop...

 I had a big ding in my original (63 pitch) Sensenich prop so I bought a new one (a 62 pitch), however I now have the original one at Sensenich being serviced as they said that there was plenty of metal in the prop to cut away and straighten the bad edge (it was only a 1/32 ding and the tip was not touched)...What I need to know is which is the prefered prop for speed the 62 or the 63 pitch or is there not much in it either way as I will change to the fastest one and sell the other.

  

 The interesting thing is that there actually was more metal in the older prop than the newer one, both wider and longer???...Dick

 

 --------

 Dick Butz

 1979 Tiger N4532P

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=312217#312217

 

 

 

 

 

 

 

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 List" target="_blank">http://www.matronics.com/Navigator?TeamGrumman-List

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 le, List Admin.

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 [b]

teamgrumman(at)YAHOO.COM
Guest

Posted: Sun Sep 12, 2010 1:55 pm Post subject: Props?

Which prop is better depends on a whole slew of things. 

(1) is the engine strong?  or is it tired?

(2) Any drag reduction items?  Wheel pants? or does it have a bunch of antennas sticking out?

(3) Ported and polished cylinders?

(4) Is your plane fat?  i.e., what is it's empty weight (the real one, not the one you carry on the weight and balance)

(5) Do you normally fly by yourself?

 I've tried everything up to a 69 inch pitch on my plane.  It likes a 65.



A 62 prop is pretty good all around.  A 63 is a pretty good prop if you have a strong engine and your plane isn't fat.



From: dickbutz <dickbutz(at)therock.bm>

To: teamgrumman-list(at)matronics.com

Sent: Sun, September 12, 2010 11:20:11 AM

Subject: Props?



 --> TeamGrumman-List message posted by: "dickbutz" <dickbutz(at)therock.bm (dickbutz(at)therock.bm)>



I know that this has most likely been beaten to death but I need help in  choosing a prop...

I had a big ding in my original (63 pitch) Sensenich prop so I bought a new one (a 62 pitch), however I now have the original one at Sensenich being serviced as they said that there was plenty of metal in the prop to cut away and straighten the bad edge (it was only a 1/32 ding and the tip was not touched)...What I need to know is which is the prefered prop for speed the 62 or the 63 pitch or is there not much in it either way as I will change to the fastest one and sell the other.



The interesting thing is that there actually was more metal in the older prop than the newer one, both wider and longer???...Dick



--------

Dick Butz

1979 Tiger N4532P





Read   



         [quote][b]

dickbutz

Joined: 12 Sep 2010
Posts: 5

Posted: Sun Sep 12, 2010 3:02 pm Post subject: Re: Props?

Which prop is better depends on a whole slew of things.

(1) is the engine strong? or is it tired?

The engine is mid time and the lowest compression is 72 (the rest above 75)

(2) Any drag reduction items? Wheel pants? or does it have a bunch of antennas sticking out?

The usual antennas and wheel pants ...New paint and glass

(3) Ported and polished cylinders?

No, stock

(4) Is your plane fat? i.e., what is it's empty weight (the real one, not the one you carry on the weight and balance)

Book weights not excessively heavy

(5) Do you normally fly by yourself?

Mostly by myself but 1/2 the time with a co-pilot

I've tried everything up to a 69 inch pitch on my plane. It likes a 65.



A 62 prop is pretty good all around. A 63 is a pretty good prop if you have a strong engine and your plane isn't fat. 



Looks like I will put the 63 back on but will this make much difference in ground speed?...Dick

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_________________
Dick Butz
1979 Tiger N4532P

flyv35b(at)minetfiber.com
Guest

Posted: Sun Sep 12, 2010 3:34 pm Post subject: Props?

If you want more speed at the same rpm I'd go with the 63" pitch as that was 

the standard cruise prop.  Most typical Tigers can turn 2700 rpm full 

throttle down low and even higher up.  The 62" pitch will turn 30-40 rpm 

more at full throttle but be 2-3 knots slower or thereabouts.  And if you 

ever take you steps off and go to the flush beacon cap or add a PF exhaust 

you will want the higher pitch prop for sure.



Cliff  A&P/IA

---

n2_narcosis(at)YAHOO.COM
Guest

Posted: Mon Sep 13, 2010 7:09 pm Post subject: Props?

So Cliff,

  Is it legal to take your steps off?  What paperwork is involved if any, 337 etc?  "Steps I  don't need no stinking steps."  When I am old enough to need steps I'll do what the old timers do in their Yankees.  Carry around a stool with a rope tied to it.



Brock

76 Tiger



--- On Sun, 9/12/10, flyv35b <flyv35b(at)minetfiber.com> wrote:



[quote] From: flyv35b <flyv35b(at)minetfiber.com>

 Subject: Re: Props?

 To: teamgrumman-list(at)matronics.com

 Date: Sunday, September 12, 2010, 6:31 PM

 --> TeamGrumman-List message

 posted by: "flyv35b" <flyv35b(at)minetfiber.com>

 

 If you want more speed at the same rpm I'd go with the 63"

 pitch as that was the standard cruise prop.  Most

 typical Tigers can turn 2700 rpm full throttle down low and

 even higher up.  The 62" pitch will turn 30-40 rpm more

 at full throttle but be 2-3 knots slower or

 thereabouts.  And if you ever take you steps off and go

 to the flush beacon cap or add a PF exhaust you will want

 the higher pitch prop for sure.

 

 Cliff  A&P/IA

 ---

garnerrice(at)hotmail.com
Guest

Posted: Tue Sep 14, 2010 4:39 am Post subject: Props?

The steps were optional equipment on the Grummans as well as many other items. If the part number starts with 580xxxx,l then typically it was an option for the aircraft. 

  

 Garner

 

  

  

 > Date: Mon, 13 Sep 2010 20:07:03 -0700

[quote] From: n2_narcosis(at)YAHOO.COM

 Subject: Re: Props?

 To: teamgrumman-list(at)matronics.com

 

 --> TeamGrumman-List message posted by: Brock Windsor <n2_narcosis(at)yahoo.com>

 

 So Cliff,

 Is it legal to take your steps off? What paperwork is involved if any, 337 etc? "Steps I don't need no stinking steps." When I am old enough to need steps I'll do what the old timers do in their Yankees. Carry around a stool with a rope tied to it.

 

 Brock

 76 Tiger

 

 --- On Sun, 9/12/10, flyv35b <flyv35b(at)minetfiber.com> wrote:

 

 > From: flyv35b <flyv35b(at)minetfiber.com>

 > Subject: Re: Props?

 > To: teamgrumman-list(at)matronics.com

 > Date: Sunday, September 12, 2010, 6:31 PM

 > --> TeamGrumman-List message

 > posted by: "flyv35b" <flyv35b(at)minetfiber.com>

 > 

 > If you want more speed at the same rpm I'd go with the 63"

 > pitch as that was the standard cruise prop.  Most

 > typical Tigers can turn 2700 rpm full throttle down low and

 > even higher up.  The 62" pitch will turn 30-40 rpm more

 > at full throttle but be 2-3 knots slower or

 > thereabouts.  And if you ever take you steps off and go

 > to the flush beacon cap or add a PF exhaust you will want

 > the higher pitch prop for sure.

 > 

 > Cliff  A&P/IA

 > ---

flyv35b(at)minetfiber.com
Guest

Posted: Tue Sep 14, 2010 4:40 am Post subject: Props?

Absolutely.  Look at your equipment list.  The steps are shown as an 

optional item and can be removed with a log book entry and weight and 

balance change.



Cliff

---

dickbutz

Joined: 12 Sep 2010
Posts: 5

Posted: Tue Sep 14, 2010 6:55 am Post subject: Re: Props?

How much speed can you pickup by removing the steps and light?...I have been down this road before and found very little result for the money invested...Seriously the steps produce that much drag?...Dick



If you want more speed at the same rpm I'd go with the 63" pitch as that was

the standard cruise prop. Most typical Tigers can turn 2700 rpm full

throttle down low and even higher up. The 62" pitch will turn 30-40 rpm

more at full throttle but be 2-3 knots slower or thereabouts. And if you

ever take you steps off and go to the flush beacon cap or add a PF exhaust

you will want the higher pitch prop for sure.



Cliff A&P/IA

_________________
Dick Butz
1979 Tiger N4532P

teamgrumman(at)YAHOO.COM
Guest

Posted: Tue Sep 14, 2010 9:10 am Post subject: Props?

It might be worth a knot or two to remove the steps.  Is it worth it?  Probably (k)not.

From: dickbutz <dickbutz(at)therock.bm>

To: teamgrumman-list(at)matronics.com

Sent: Tue, September 14, 2010 7:55:51 AM

Subject: Re: Props?

 --> TeamGrumman-List message posted by: "dickbutz" <dickbutz(at)therock.bm (dickbutz(at)therock.bm)>

How much speed can you pickup by removing the steps and light?...I have been down this road before and found very little result for the money invested...Seriously the steps produce that much drag?...Dick

If you want more speed at the same rpm I'd go with the 63" pitch as that was

the standard cruise prop. Most typical Tigers can turn 2700 rpm full

throttle down low and even higher up. The 62" pitch will turn 30-40 rpm

more at full throttle but be 2-3 knots slower or thereabouts. And if you

ever take you steps off and go to the flush beacon cap or add a PF exhaust

you will want the higher pitch prop for sure.

Cliff A&P/IA

--------

Dick Butz

1979 Tiger N4532P

Read this topic online here:

flyv35b(at)minetfiber.com
Guest

Posted: Wed Sep 15, 2010 4:39 am Post subject: Props?

Combined, probably about 2 kts as I recall and it doesn't cost much to do. 

The flush beacon cap is primarily a cosmetic mod and you have decide if you 

are happy without having a step to get up on the wing.  All of these "small" 

drag reduction things are cumulative and can add up to significant gains.



Cliff

---

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