Seems all 3900s with the 700 / NXT1 package come with 18x35 CNC Merc props and are running 101 - 102. Has anyone put a 17x36 on one? What were the results?
Thread: 3900 Super Vee props
Results 1 to 13 of 13
-
3900 Super Vee props
Supporter
- Join Date
- Nov 2008
- Location
- Cartersville, GA
- Posts
- 39
12-01-2008 02:26 PM
-
Sponsor / Charter Member
- Join Date
- Oct 2008
- Location
- St. Petersburg
- Posts
- 1,052
12-01-2008 04:20 PMIt is possible with drives mounted so very high they need the diameter to simply reach the water. What gear ratio are we talking about. We can run the slip and an see if the reduction would be a possibility.
JulieWhen you feel the need for speed...Throttle Up!
GO FAST or GO HOME!
-
-
Charter Member
- Join Date
- Oct 2008
- Location
- orange park fl.
- Posts
- 56
12-02-2008 10:57 PMI run 17.5 x 34 4 blade mercs 118 mph but thats with 1.50 #6's not NXT's......5 blades gave me WAY to much transom lift and after 112 to 115 it would ghost steer
TEAMSHOCKER
-
Supporter
- Join Date
- Nov 2008
- Location
- Cartersville, GA
- Posts
- 39
12-03-2008 04:27 PMWhat power do you have? What year is yours? Did you sacrifice anything going with the 4 blade? What about acceleration and planning time?
-
Charter Member
- Join Date
- Oct 2008
- Location
- orange park fl.
- Posts
- 56
12-03-2008 06:21 PM1050 hp per side... 2005...... sacrifice? no because it did nothing better with the 5 blades.. it jumps up on plane no problem with or without the 1" spacers.. i don't even use the 380 k planes to get on plane
TEAMSHOCKER
-
Supporter
- Join Date
- Nov 2008
- Location
- Cartersville, GA
- Posts
- 39
12-03-2008 07:20 PMWhat RPM are you turning at WOT?
-
Charter Member
- Join Date
- Oct 2008
- Location
- orange park fl.
- Posts
- 56
12-03-2008 07:32 PM6700 to 6800
TEAMSHOCKER
-
Charter Member
- Join Date
- Oct 2008
- Location
- Diamondead, MS
- Posts
- 474
12-07-2008 10:33 AM
Originally Posted by NORTECHJ
great numbers, impressive for a 40' boat
-
Sponsor / Charter Member
- Join Date
- Oct 2008
- Location
- St. Petersburg
- Posts
- 1,052
12-09-2008 10:16 AMWhat is your WOT RPM? Originally Posted by jima97
Are the props standard labs or are they CNC's, Merc or Hering?
JulieWhen you feel the need for speed...Throttle Up!
GO FAST or GO HOME!
-
Supporter
- Join Date
- Nov 2008
- Location
- Cartersville, GA
- Posts
- 39
12-09-2008 02:59 PM5300 CNC Merc
-
Sponsor / Charter Member
- Join Date
- Oct 2008
- Location
- St. Petersburg
- Posts
- 1,052
12-09-2008 05:32 PMYour slip is 14% so it is possible that smaller diameter props may indeed perform. Are they 16 degrees of rake or 18 degrees of rake?
JulieWhen you feel the need for speed...Throttle Up!
GO FAST or GO HOME!
-
Charter Member
- Join Date
- Oct 2008
- Location
- Dallas, TX
- Posts
- 1,642
01-06-2009 04:01 AMDon't you have the old crescent shaped lowers (not swept back) though, which may cause some steering problems? Originally Posted by NORTECHJ
I know our BT is as solid as a rock over 110 now with the swept back lowers and 5 blades. Before with the old cresent shaped lowers, our boat wouldn't feel totally hooked up above 110, and ran better with 4 blades.
The new swept back skegs are also longer which could attribute to allowing more transom lift with the 5 blades while still having steering, giving you that "hooked up" feeling above 110mph.
Sorry, not trying to hijack a thread or anything....
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts