The C-Brats Forum Index
HomeForumsMy TopicsCalendarEvent SignupsMemberlistOur C-DorysThe Brat MapPhotos

Prop size for a 22 Angler with a DF90

 
Post new topic   Reply to topic    The C-Brats Forum Index -> Propellers
View previous topic :: View next topic  
Author Message
easternshore22



Joined: 12 Jun 2010
Posts: 40
City/Region: Eastern Shore
State or Province: MD
C-Dory Year: 1996
C-Dory Model: 22 Angler
Vessel Name: Hunky Dory
Photos: Hunky Dory
PostPosted: Wed Feb 09, 2011 9:18 am    Post subject: Prop size for a 22 Angler with a DF90 Reply with quote

Hi,

I decided to change the old Johnson 70 for a DF90. I am trying to find out the proper prop size for the 22 Angler. After reading the posts in the Propellers forum it is not clear which prop will be the best fit. It seems that fellow C-Brats are using from 13 to 20 pitch in a 22 powered with a 90HP.

I am going to get a SS prop since the bottom in this area is generally mud and the chances of hitting something hard are slim. The boat will generally be loaded on the light side.

Thanks for your feedback,

Franco

_________________
____________________________
1996 C-Dory Angler 22'
Choptank River
Eastern Shore, MD
Back to top
View user's profile Send private message
jennykatz



Joined: 15 Dec 2003
Posts: 1678
City/Region: naples
State or Province: FL
C-Dory Year: 2006
C-Dory Model: 23 Venture
Vessel Name: Little Treasurer
Photos: Jennykatz
PostPosted: Thu Feb 10, 2011 8:23 am    Post subject: engine Reply with quote

Is the DF90 a Suzuki engine if it is ,We had a 90 hp Suzuki the 2litre one same block as the 115hp we put a S/S 14by 18 pitch it was perfect 35-36 mph and 4-5 mpg also revved up to 5800rpm

If on the other hand its a newer suzuki 90 small block 1.6 litre you might need a smaller pitch .The suzuki has a bigger gear case then honda or yamaha .
WE now have a CC-23 with a yamaha f-115 and we use a 13by 15pitch S/S prop we can rev up to 5500rpm and about 32 mph top end about 4-5mpg

_________________
retired 8/08 from UAL, still working pt tm
Duck c-22 cruiser sold 6/23/08
06 Venture Cruiser with merc115CT
00 cd16 cruiser honda 40 sold 3/12
Back to top
View user's profile Send private message Send e-mail Visit poster's website
easternshore22



Joined: 12 Jun 2010
Posts: 40
City/Region: Eastern Shore
State or Province: MD
C-Dory Year: 1996
C-Dory Model: 22 Angler
Vessel Name: Hunky Dory
Photos: Hunky Dory
PostPosted: Thu Feb 10, 2011 10:29 am    Post subject: Reply with quote

Jim,

Thanks for your reply. Yes it is the newer Suzuki DF90. I think I will ask the dealer to start with a 14x17 test prop and see how it performs.

Franco
Back to top
View user's profile Send private message
rogerar



Joined: 10 May 2008
Posts: 146
City/Region: SW FL
State or Province: FL
C-Dory Year: 1999
C-Dory Model: 22 Cruiser
Vessel Name: Duck
Photos: Duck
PostPosted: Tue Nov 08, 2011 5:04 am    Post subject: Reply with quote

What prop did you end up with and how's the WOT RPM?
I am setting up a new Suzuki 90A on my C Dory 22, and the 14 X 18 prop seems too big.
Thanks
Roger
Back to top
View user's profile Send private message Send e-mail
easternshore22



Joined: 12 Jun 2010
Posts: 40
City/Region: Eastern Shore
State or Province: MD
C-Dory Year: 1996
C-Dory Model: 22 Angler
Vessel Name: Hunky Dory
Photos: Hunky Dory
PostPosted: Tue Nov 08, 2011 7:48 am    Post subject: Reply with quote

Roger,

The dealer end up recommending the 14x18 prop. At WOT it runs at 5900 RPM and 34mph. That is in the lower range of the WOT. I have a spare 13.75 x 15 aluminum prop that gives me the full WOT and 32mph with light load, with heavy load it would only reach 29mph and it feels like it is trying harder to push the boat.

I cruise with the 14x18 at 4500 RPM at 25mph. The SMIS gauge reads 4.5-5mpg. I am ok with that so I decided on that prop.

If you have the option of trying both props, do that with your normal load so you can get a feeling of which one will fit better.

Franco
Back to top
View user's profile Send private message
rogerar



Joined: 10 May 2008
Posts: 146
City/Region: SW FL
State or Province: FL
C-Dory Year: 1999
C-Dory Model: 22 Cruiser
Vessel Name: Duck
Photos: Duck
PostPosted: Tue Nov 08, 2011 9:51 am    Post subject: Reply with quote

Thanks, I'll try another WOT run, I can't seem to get it over 5400, though the dealer reported 5800.
Roger
Back to top
View user's profile Send private message Send e-mail
easternshore22



Joined: 12 Jun 2010
Posts: 40
City/Region: Eastern Shore
State or Province: MD
C-Dory Year: 1996
C-Dory Model: 22 Angler
Vessel Name: Hunky Dory
Photos: Hunky Dory
PostPosted: Tue Nov 08, 2011 9:55 am    Post subject: Reply with quote

You are welcome. The 5400 RPM reading is with the engine trimmed all the way down? 5400 WOT RPM is what I get with the engine trimmed all the way down. When I trim it up I get the max WOT.

Franco
Back to top
View user's profile Send private message
rogerar



Joined: 10 May 2008
Posts: 146
City/Region: SW FL
State or Province: FL
C-Dory Year: 1999
C-Dory Model: 22 Cruiser
Vessel Name: Duck
Photos: Duck
PostPosted: Tue Nov 08, 2011 4:16 pm    Post subject: Reply with quote

I'll take it out tomorrow and try the trim adjustment, then I'm hauling out for the 20 Hr. break-in service. I really like this motor, the fuel economy is excellent and the 75 lb. savings over the older DF90 are impressive! My stern floats an inch higher.
Thanks
Roger
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
Post new topic   Reply to topic    The C-Brats Forum Index -> Propellers All times are GMT - 5 Hours
Page 1 of 1

 
     Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum



Page generation time: 0.0821s (PHP: 82% - SQL: 18%) - SQL queries: 26 - GZIP disabled - Debug on