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Prop size and pitch 36 ET

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902dlw
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Posts: 40
Joined: Fri Aug 02, 2013 1:33 pm
Home Port: Severn River, Annapolis, MD
Location: Annapolis, Maryland

Prop size and pitch 36 ET

Post by 902dlw »

What is the size and pitch of the prop on 36 ET with Cummins 450hp?
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AK_Albin36
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Joined: Thu Apr 19, 2012 11:31 pm
Home Port: Whittier, Alaska

Re: Prop size and pitch 36 ET

Post by AK_Albin36 »

I've been wondering the same on my Cat 450 hp single (36 ET). My survey says its a 26" diameter LH prop. I back calculated the pitch using my speed/rpm table. If its a 22 inch pitch, the slip is 0.39. Planning to check the stamp on my next haul.

Any other single screws out there who have seen their prop stamp during a haul?

Below is my performance table. 1/2 Fuel, 1/2 water, flat water, semi-dirty bottom
EvenTide Fuel Cap: 380 gal
Gear Ratio 2.063

(Sorry for the formatting... best I could do in the body of the post)

RPM____GPH___Kts___NMPG____Range(nm)
900____1.5____5____3.33_____1267
1000____2____5.5____2.75____1045
1150____2.5____6____2.40____912
1240____3____6.5 ____2.17____823
1335____3.5____7____2.00____760
1402____4_____7.5___1.88____713
1480____4.5____7.9___1.76____667 (best slow cruise - trim tabs up, ~30% load)
1550____5.4____8.2___1.52____577
1600____6_____8.5___1.42_____538
1700____7_____9_____1.29 ____489
2000____10____10____1.00 ____380
2400____16____14____0.88 ____333 (best fast cruise - trim tabs max down, ~70% load)
2550____18____15____0.83 ____317
2650____20____16____0.80 ____304
2800____23____17____0.74 ____281
Last edited by AK_Albin36 on Sun Jun 22, 2014 3:12 am, edited 2 times in total.
2004 Albin 36 ET "EvenTide"
Single Cat 3126B 450
Whittier, Alaska
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Almeister
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Joined: Thu Mar 27, 2014 11:03 am
Home Port: Quebec city
Location: Quebec city, Canada

Re: Prop size and pitch 36 ET

Post by Almeister »

I have Sophie-Christine under extensive survey at the moment, she has the Cummins 450 CTA. The prop is a bronze 4 blades 26" diam with 25" pitch. If you can see the following picture...
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Alain
2001 Albin Express Trawler 36 "Atmosphere" Hull #19
Quebec City, Canada
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AK_Albin36
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Posts: 51
Joined: Thu Apr 19, 2012 11:31 pm
Home Port: Whittier, Alaska

Re: Prop size and pitch 36 ET

Post by AK_Albin36 »

My 2004 with single Cat 450 is confirmed as 26 X 22.
My top end motor rpm is 2800 rpm with a transmission gear ratio of 2.063
2004 Albin 36 ET "EvenTide"
Single Cat 3126B 450
Whittier, Alaska
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