propeller

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propeller

Postby Sea Muse » Mon May 03, 2021 6:27 am

Mornin guys, I was wondering what some of the typical propeller sizes are for the Camano Troll. Please include engine make, size, and model #.
Particularly propellers with the TAMD41P-A engine. Thank-you
Sea Muse
 
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Re: propeller

Postby nwradio » Mon May 03, 2021 4:19 pm

My survey says:

Bronze, 20LH 21, four blade

I do not believe it was changed since the boat was first dumped in the water. I have owned it since 2003.

Engine is a TAMD41P-A 200 HP Transmission is an HS45A Ratio: 2.43:1

Walt
'Sea Bear' #43
Everett
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Re: propeller

Postby Sea Muse » Tue May 04, 2021 7:08 am

Good to know Walt. I've got the same model engine and same gear but 20x18.7 prop. Do you get any smoke at the higher RPM?
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Re: propeller

Postby nwradio » Tue May 04, 2021 8:45 am

I have never been a high-RPM kind of guy. My cruise speed is 2400 RPM's at which I get about 8 knots. Once a year I run the engine up to 3200 RPM's for a few min. just to see if it works at that speed, but never for any length of time. The only time I see any smoke out the back is when I first start it up and the engine is warming up. I see a little white vapor that dissipates within feet of the boat, but that does not seem consistent and I have not been too concerned. There is no white vapor when I am at 1200 rpm coming into port.

The engine is at 2600 hrs. Temp. runs at 170 deg. No engine oil is burned - Dip stick is always at top mark from beginning season to end. Same with the coolant. Transmission seems to use about a half-cup during a season. Not sure where that goes since the bilge is always clean.

You might search the forum - I remember some posts about people changing pitch in order to achieve something, I forgot what it was, but I do remember several conversations about it.
Not sure what advantage of less pitch would be in the long run. Maybe others will say something. As to what the 'Best' speed is for the engine, I just do not have the background to know.

There was a chart of RPM's by the boat 'Latitude' that was posted back in 2014. Not sure if it is still on here - that prop was listed as a 20x20. and seems to follow what my boat does.

Hope that helps. I have to trust that Camano did a proper design. So far, I have been a happy camper and the boat always gets me home.

Walt
'Sea Bear' #43
Everett
nwradio
 
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Re: propeller

Postby jhance » Sat May 08, 2021 10:01 am

They say it's a good practice to run the engine up to 3000+ RPM for the last 15 mins or so each time you go out to burn out crud from running at lower RPMs.
Jamey Hance
"Audrey Grace" #188
Orcas Island, WA
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Re: propeller

Postby DeTour » Fri May 14, 2021 7:17 am

I have a 2006 Yanmar 200HP 4LHA-DTP

Prop 20L22 HSX
4 blade
I cruise at 1800-2100 at 7.5 knots 95% time
I do run her up to 3200 of 3400 rpm regularly to blow the carbon and push the engine to see how she does. Do it once a week for 10 - 15 minutes
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Re: propeller

Postby chrisaensing » Sun May 16, 2021 2:23 pm

I have a 20 x 18.7 LH 4 Blade - Volvo TAMD41 P 200
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