distance from strut to prop?

i would think you would since you moved it, thats not saying it sarcastically

Brian,
Hopefully before you cut the shaft off, you had the prop balanced/tuned, the shaft checked for straightness using a dial indicator, installed a new cutlass bearing and then lapped the prop onto the shaft. With a prop that close to the strut I'd be a little concerned about proper water flow through the cutlass. Can you still get a prop puller on it or do you need to separate the coupling halves?

The prop should clear the hull by 10% of the prop diameter. I don't know the performance difference with running less than the 10% but I do know it hurts it. The turbulence created as the prop swings up towards the hull really creates a imbalance. With less than the proper clearance, you are also risking damage to the hull with prop burn. I've seen the gel gone and the glass hull eroded.

BTW, the normal rule of thumb distance for the prop hub from the strut is 1 to 1&1/2 time the shaft diameter.

"Prop burn" or "hull rash" isn't a mark but rather areas of errosion caused by water/air cavitation. So, how close is the new prop?





With your vibration problem, did you:

8122pbrainard wrote: before you cut the shaft off, did you check the shaft for straightness using a dial indicator, installed a new cutlass bearing and then lapped the prop onto the shaft.

Your being a tool maker, you can certainly appreciate the importance of tight tolerances and concentricity's.

your a little close with the .25 gap it should be around 1/2 provided you have tip clearence as Pete stated, it does help it moving it closer to the strut, less flexx, changes the bow rise and does help the hole shot having it closer to the strut. It's not a huge difference but it is noticible.

when you look at it that is what you are trying to control, the center of this is the center of that, and it was pretty common practice, but as more and more learn the proper applications of GD&T the standards committy started backing off endorsing it's use and several company's do not allow for it to be use and state so in their own standards manuals.

Bring it out to CT and Ill wring it out for you!

Right near Connecticut.

hotboat wrote: Where is CT?

Brian,
This is a map of the United States of America. If you look in the upper right corner of the country, you'll see Hartford CT. shown. CT. is the abbreviation for Connecticut.



Also, here's a list of the states abbreviations if it will help.

State/Possession          Abbreviation
ALABAMA                         AL
ALASKA                          AK
AMERICAN SAMOA                  AS
ARIZONA                         AZ
ARKANSAS                        AR
CALIFORNIA                      CA
COLORADO                        CO
CONNECTICUT                     CT
DELAWARE                        DE
DISTRICT OF COLUMBIA            DC
FEDERATED STATES OF MICRONESIA FM
FLORIDA                         FL
GEORGIA                         GA
GUAM                            GU
HAWAII                          HI
IDAHO                           ID
ILLINOIS                        IL
INDIANA                         IN
IOWA                            IA
KANSAS                          KS
KENTUCKY                        KY
LOUISIANA                      LA
MAINE                           ME
MARSHALL ISLANDS               MH
MARYLAND                        MD
MASSACHUSETTS                   MA
MICHIGAN                        MI
MINNESOTA                      MN
MISSISSIPPI                     MS
MISSOURI                        MO
MONTANA                         MT
NEBRASKA                        NE
NEVADA                          NV
NEW HAMPSHIRE                   NH
NEW JERSEY                      NJ
NEW MEXICO                      NM
NEW YORK                        NY
NORTH CAROLINA                  NC
NORTH DAKOTA                    ND
NORTHERN MARIANA ISLANDS        MP
OHIO                            OH
OKLAHOMA                        OK
OREGON                          OR
PALAU                           PW
PENNSYLVANIA                    PA
PUERTO RICO                     PR
RHODE ISLAND                    RI
SOUTH CAROLINA                  SC
SOUTH DAKOTA                    SD
TENNESSEE                      TN
TEXAS                           TX
UTAH                            UT
VERMONT                         VT
VIRGIN ISLANDS                  VI
VIRGINIA                        VA
WASHINGTON                      WA
WEST VIRGINIA                   WV
WISCONSIN                      WI
WYOMING                         WY

I went to Boston once to meet the hottest chic, I had to fly to 3 dif cities first and met 3 more on the way...so this is sounding like a good idea...I have to leave for a wsop game but will return in a week...sorry bout the vacation?

SUNAPEE CROW wrote: CONNECTICUT...... The place where the DUMBEST MOST AGGRESSIVE DRIVERS live and work. I hate I 84!! Try Hartford at 3:30 on a Friday going either East or West. It is far worse than metro Boston and we have the illegals that can't read!! English that is.

TRBenj wrote: Rick, I do the metro Boston commute every weekday, and I still get to enjoy the Hartford traffic on Friday afternoons. Its the best of both worlds, really.

I don't know about Boston, but when I was interning for Pratt&Whitney I had to commute down I-91 to I-84 East in Hartford to East Hartford...definitely more traffic than I was ever used to growing up in the mid-west. The shear volume is bad yes, but the drivers aren't any dumber than anywhere else in the country.

Stupid = the real pandemic