Search found 9589 matches

by jimh
Thu Oct 28, 2021 9:32 am
Forum: PERFORMANCE
Topic: Menemsha 16 Power to Reach Plane
Replies: 20
Views: 441

Re: Menemsha 16 Power to Reach Plane

KENT--if you want to use an analogy to a passenger car for a boat trying to accelerate onto plane, the passenger car will have to be operating in a continuous uphill grade, with the initial uphill grade being very steep, then later the uphill grade reduces somewhat, but the car continues forever run...
by jimh
Thu Oct 28, 2021 7:10 am
Forum: PERFORMANCE
Topic: Menemsha 16 Power to Reach Plane
Replies: 20
Views: 441

Re: Menemsha 16 Power to Reach Plane

I had no idea that there would be such choices [in propeller]. KENT--you may find a better explanation of how the load of a propeller affects the ability of an engine to accelerate under that load by reading my article Propeller Power Curve https://continuouswave.com/whaler/reference/propellerPower...
by jimh
Thu Oct 28, 2021 6:59 am
Forum: The GAM
Topic: 235 Conquest v. Eastern Sisu 22
Replies: 2
Views: 53

Re: 23 Conquest

Q1: would a semi-displacement hull like an Eastern, an F. L .Tripp, or a Crosby--downeast or bass boats--handle seas of two to three feet better than planing hull boats like a Grady-White or a Boston Whaler? I don't think there are any 22 to 24-foot boats that are going to be comfortable underway i...
by jimh
Wed Oct 27, 2021 4:48 pm
Forum: SMALL BOAT ELECTRICAL
Topic: 1999 17 Outrage: Routing Power Wiring From Console to Gunwale
Replies: 2
Views: 21

Re: 1999 17 Outrage: Routing Power Wiring From Console to Gunwale

On 1999 17 OUTRAGE boats there must be a wiring path from the center console to the transom area, usually denoted as a rigging tunnel, in order to carry the steering cables and the engine remote control harness and the engine remote shift and throttle controls to the engine from the console. Electri...
by jimh
Wed Oct 27, 2021 4:44 pm
Forum: REPAIRS and MODIFICATIONS
Topic: 1996 Outrage II and 2002 19 Justice fuel tank dimensions
Replies: 3
Views: 37

Re: 1996 Outrage II and 2002 19 Justice fuel tank dimensions

I have heard there may be some factory recommended modifications to help with tank rot. The OEM fuel tanks are made from aluminum sheet and welded together. I do not understand what would "rot." A 25-year-old aluminum fuel tank used in a boat that has been exposed to a lot of ingress of w...
by jimh
Wed Oct 27, 2021 4:08 pm
Forum: REPAIRS and MODIFICATIONS
Topic: 1996 Outrage II and 2002 19 Justice fuel tank dimensions
Replies: 3
Views: 37

Re: 1996 Outrage II and 2002 19 Justice fuel tank dimensions

Q1: what are the fuel tank dimensions [for the two fuel tanks mentioned above]? FMT generally does not give away information on their fuel tank designs, as one might expect for a manufacturer of a fuel tank. I don't think the costs for FMT fuel tanks are particularly high. If you want an OEM replac...
by jimh
Tue Oct 26, 2021 7:42 am
Forum: PERFORMANCE
Topic: Menemsha 16 Power to Reach Plane
Replies: 20
Views: 441

Re: Menemsha 16 Power to Reach Plane

KENT--if you choose the propeller for the 60-HP engine so that the propeller pitch is appropriate for a top boat speed of 28-MPH, the engine should be able to accelerate and put the boat on plane. If we knew the gear ratio and the manufacturer's maximum engine speed for the "60-HP" engine,...
by jimh
Sat Oct 23, 2021 8:05 pm
Forum: REPAIRS and MODIFICATIONS
Topic: 1998 17 OUTRAGE II: Unusual hole and plug in hull liner
Replies: 11
Views: 345

Re: 1998 17 OUTRAGE II: Unusual hole and plug in hull liner

What is the basis for keeping the fuel tank cavity drain capped? Why not leave it open?
by jimh
Sat Oct 23, 2021 7:53 pm
Forum: PERFORMANCE
Topic: 1983 CENTER CONSOLE 15 with 60-HP
Replies: 6
Views: 171

Re: 1983 CENTER CONSOLE 15 with 60-HP

I had a bare bone 1976 SPORT 15. The hull weight was very light in that year--the first year of production. With a very light 50-HP (powerhead rated so really about 45-HP at propeller) two-stroke-power-cycle engine the maximum boat speed was about 34-MPH with two adults aboard. A modern 60-HP engine...
by jimh
Fri Oct 22, 2021 10:58 am
Forum: PERFORMANCE
Topic: Menemsha 16 Power to Reach Plane
Replies: 20
Views: 441

Re: Menemsha 16 Power to Reach Plane

...our 16-footer with just a light aftermarket console and no seats tops out at around 31-MPH with a new 50-HP engine. Assuming the boat weigh of your 16-foot bare hull with "light" console is about 1,200-lbs, if a 50-HP engine can only propel the boat to 31-MPH then the hull factor calcu...
by jimh
Fri Oct 22, 2021 10:48 am
Forum: PERFORMANCE
Topic: Menemsha 16 Power to Reach Plane
Replies: 20
Views: 441

Re: Menemsha 16 Power to Reach Plane

I have a hard time believing a powerhead-rated 35 with the added [weight] of the cabin could reach 35 [MPH]. More minor points: ⋅ in the example above which predicts a speed of 30.7-MPH (not 35-MPH) the power used is propeller shaft power of 35-HP ⋅ the boat used is the lightest...
by jimh
Fri Oct 22, 2021 10:43 am
Forum: REPAIRS and MODIFICATIONS
Topic: 1998 17 OUTRAGE II: Unusual hole and plug in hull liner
Replies: 11
Views: 345

Re: 1998 17 OUTRAGE II: Unusual hole and plug in hull liner

When the plug or cap for the drain for the fuel tank cavity on a c.1998 17 OUTRAGE II boat is removed, what does the water drain into?

How is that water removed?
by jimh
Thu Oct 21, 2021 8:36 am
Forum: MARKETPLACE
Topic: 2018 130 SUPER SPORT $16,900 NO LOCATION
Replies: 1
Views: 266

Re: 2018 130 SUPER SPORT $16,900 NO LOCATION

Post advertising boats for sale must specify the location.
by jimh
Thu Oct 21, 2021 8:25 am
Forum: PERFORMANCE
Topic: Menemsha 16 Power to Reach Plane
Replies: 20
Views: 441

Re: Menemsha 16 Power to Reach Plane

The Crouch method can also be used to deduce the boat speed that would occur with the suggested minimum power of 35-HP specified by Boston Whaler for this hull and a "light" load. Here assuming the empty 16-foot hull weight would have been 550-lbs, the engine would have been 300-lbs, and a...
by jimh
Wed Oct 20, 2021 2:21 pm
Forum: REPAIRS and MODIFICATIONS
Topic: 1998 17 OUTRAGE II: Unusual hole and plug in hull liner
Replies: 11
Views: 345

Re: 1998 17 OUTRAGE II: Unusual hole and plug in hull liner

Phil T wrote:The drain under discussion is the drain for the fuel tank cavity.

With the purpose identified for the drain, that some water came out upon removal of the plug makes good sense.
by jimh
Wed Oct 20, 2021 2:19 pm
Forum: PERFORMANCE
Topic: Menemsha 16 Power to Reach Plane
Replies: 20
Views: 441

Re: Menemsha 16 Power to Reach Plane

Phil T wrote:An 90-HP would be a practical choice...

There is no doubt that a 90-HP will be a very practical engine for a Menemsha with four aboard and a dog.
by jimh
Wed Oct 20, 2021 2:14 pm
Forum: PERFORMANCE
Topic: Menemsha 16 Power to Reach Plane
Replies: 20
Views: 441

Re: Menemsha 16 Power to Reach Plane

Q1: does the forward cuddy's weight change the boat's center of gravity? Yes, but so does the engine, the fuel, the battery, and the people aboard Q2: does the forward cuddy's weight help or hinder the hull reaching hydroplane speed? All added weight reduces performance, so the weight of the cuddy ...
by jimh
Tue Oct 19, 2021 11:53 am
Forum: REPAIRS and MODIFICATIONS
Topic: 1998 17 OUTRAGE II: Unusual hole and plug in hull liner
Replies: 11
Views: 345

Re: 1998 17 OUTRAGE II: Unusual hole and plug in hull liner

Also, Phil T is expert on these boats, and he should be familiar with this detail in the hull.
by jimh
Tue Oct 19, 2021 11:46 am
Forum: REPAIRS and MODIFICATIONS
Topic: 1998 17 OUTRAGE II: Unusual hole and plug in hull liner
Replies: 11
Views: 345

Re: 1998 17 OUTRAGE II: Unusual hole and plug in hull liner

A guess: the hole (which is described as being original with the boat from the factory and having a cover that also appears to be from the factory) may have been a sprue hole. A sprue hole is used in the fabrication of all Unibond hulls as a place in the liner mold where the foam is introduced into ...
by jimh
Tue Oct 19, 2021 9:59 am
Forum: The GAM
Topic: 2004 150 Sport: Source for Cushions
Replies: 9
Views: 319

Re: 2004 150 Sport: Source for Cushions

Moderator’s note: a comment that disparaged a vendor’s website has been removed from this thread. The real topic here is the opinion of the quality of the product provided, not the opinion of the vendor’s website presentation. That an artisan who will fabricate custom products for older Boston Whale...
by jimh
Sun Oct 17, 2021 9:35 am
Forum: REPAIRS and MODIFICATIONS
Topic: 2014 Mercury 90 FOURSTOKE No Start
Replies: 2
Views: 127

Re: 2014 Mercury 90 FOURSTOKE No Start

[My 2014 Mercury 90-HP FOURSTROKE engine] stopped suddenly with [a diagnostic] message [that said] something like "Voltage Problem." I don't understand how you could have read the diagnostic message if after this event there was no electrical power being provided to any device on the boat...
by jimh
Sun Oct 17, 2021 9:34 am
Forum: REPAIRS and MODIFICATIONS
Topic: 2014 Mercury 90 FOURSTOKE No Start
Replies: 2
Views: 127

Re: 2014 Mercury 90 FOURSTOKE No Start

To assess electrical problems you must have a reliable and accurate voltmeter, and possess knowledge on how to measure electrical voltages. If you have both those, then: Remove the engine cowling. Using a reliable voltmeter, measure the voltage at the engine on the terminal post to which the primary...
by jimh
Fri Oct 15, 2021 6:08 pm
Forum: PERFORMANCE
Topic: 13-footer E-TEC 30-HP
Replies: 3
Views: 135

Re: 13-footer E-TEC 30-HP

If the boat's power is reduced to 30-HP from 40-HP, and if the weight stays the same, then the top speed will decrease by a factor of the power ratio to the exponent 0.5, or in this case by (30/40)^0.5 or 0.86. If the prior top speed were, say, 30-MPH with the 40-HP engine, then the top speed with t...
by jimh
Fri Oct 15, 2021 3:54 pm
Forum: PERFORMANCE
Topic: 23 CONQUEST Twin Yamaha F150 Engines
Replies: 14
Views: 356

Re: 23 CONQUEST Twin Yamaha F150 Engines

I am looking forward to the results of your first propeller test with the aluminum 17-pitch propellers. When you perform the propeller test, I suspect the boat speed at full throttle will reflect a high value of SLIP due to the aluminum propeller blades deforming a bit under the load of transmitting...
by jimh
Fri Oct 15, 2021 2:47 pm
Forum: PERFORMANCE
Topic: 23 CONQUEST Twin Yamaha F150 Engines
Replies: 14
Views: 356

Re: 23 CONQUEST Twin Yamaha F150 Engines

Re the counter-rotating engine: if seems like often the counter-rotating gear case does not run as well as the standard rotation, and the engine can't turn the same speed at full-throttle as the other standard rotation engine can. I think the dealer's and your plan to test with 17-pitch three-blade ...
by jimh
Fri Oct 15, 2021 2:42 pm
Forum: PERFORMANCE
Topic: 23 CONQUEST Twin Yamaha F150 Engines
Replies: 14
Views: 356

Re: 23 CONQUEST Twin Yamaha F150 Engines

If 6,000-RPM is the recommended engine speed limit for full throttle operation, you won't get to 45-MPH with a 17-pitch unless the pitch is very understated so the SLIP calculates to about 6 or 7. Any value of SLIP is only deduced by calculation from measurement of the other four values in the relat...
by jimh
Fri Oct 15, 2021 2:30 pm
Forum: PERFORMANCE
Topic: 23 CONQUEST Twin Yamaha F150 Engines
Replies: 14
Views: 356

Re: 23 CONQUEST Twin Yamaha F150 Engines

The illustrating photo above shows an engine mounted one-hole-up.
by jimh
Fri Oct 15, 2021 2:27 pm
Forum: PERFORMANCE
Topic: 23 CONQUEST Twin Yamaha F150 Engines
Replies: 14
Views: 356

Re: 23 CONQUEST Twin Yamaha F150 Engines

Regarding propeller pitch estimates: for a 17-pitch propeller with a SLIP of 10 to hit 45-MPH while being turned by an engine with a 2:1 gear ratio, the engine speed will need to be greater than 6,200-RPM. You can use my PROPELLER CALCULATOR to work out other solutions. For example, at 6,000-RPM the...
by jimh
Fri Oct 15, 2021 8:50 am
Forum: PERFORMANCE
Topic: 23 CONQUEST Twin Yamaha F150 Engines
Replies: 14
Views: 356

Re: 23 CONQUEST Twin Yamaha F150 Engines

As seen above in Figure 1, the new engines are mounted in the lowest possible position on the transom of the 23 CONQUEST. The engine mounting height is an important factor in performance and propeller testing. You may want to closely observe the location of the anti-ventilation plates of the twin en...
by jimh
Fri Oct 15, 2021 8:36 am
Forum: PERFORMANCE
Topic: 23 CONQUEST Twin Yamaha F150 Engines
Replies: 14
Views: 356

Re: 23 CONQUEST Twin Yamaha F150 Engines

If the boat hit 44-MPH with twin 135-HP engines, then it certainly should achieve that same speed with twin F150 engines. On that basis I would use 44-MPH or maybe 45-MPH as a target for top boat speed. If you give the information about the F150 requested above, then a trial pitch can be calculated ...
by jimh
Thu Oct 14, 2021 7:20 pm
Forum: The GAM
Topic: 2004 150 Sport: Source for Cushions
Replies: 9
Views: 319

Re: 2004 150 Sport: Source for Cushions

Again, check out the recommended vendors list. The vendors were selected because there have been no complaints about them.
by jimh
Thu Oct 14, 2021 9:28 am
Forum: The GAM
Topic: 2004 150 Sport: Source for Cushions
Replies: 9
Views: 319

Re: 2004 150 Sport: Source for Cushions

For replacement upholstered seating, contact the recommended vendor given in the article

Original Equipment Manufacturers and Recommended Vendors
https://continuouswave.com/whaler/reference/OEM.html
by jimh
Wed Oct 13, 2021 7:36 pm
Forum: REPAIRS and MODIFICATIONS
Topic: 1985 Outrage 18 Purpose of small rope
Replies: 6
Views: 308

Re: 1985 Outrage 18 Purpose of small rope

Neither Figure 1 or Figure 2 show clearly how the "rope" terminates at the hull. If a better view of that can be seen, the purpose of the "rope" may more easily be confirmed. Both Figure 1 and Figure 2 show the "rope" from the same point of view, as seen from the stern....
by jimh
Wed Oct 13, 2021 11:36 am
Forum: REPAIRS and MODIFICATIONS
Topic: 255 CONQUEST Gunwale Strength
Replies: 2
Views: 126

Re: 255 CONQUEST Gunwale Strength

The gunwales are not glassed in completely to the boat. Boston Whaler boats are generally not molded with the gunwale cap as part of the Unibond hull. The gunwale cap and other structural elements of the boat are attached to the Unibond hull-liner one-piece assembly after the Unibond hull-liner one...
by jimh
Mon Oct 11, 2021 10:05 am
Forum: The GAM
Topic: Super Sport 15 Trailer
Replies: 8
Views: 442

Re: Super Sport 15 Trailer

If anyone actually has a Super Sport 15 on a float-on bunk trailer and would be willing to tell me the distance between the bunks on their setup, in inches, I'd be really grateful. That could be useful, but you seem to be assuming that anyone who responds with a dimension would have a properly set-...
by jimh
Sat Oct 09, 2021 4:54 pm
Forum: The GAM
Topic: Super Sport 15 Trailer
Replies: 8
Views: 442

Re: Super Sport 15 Trailer

Consider adding keel rollers to the new trailer.
by jimh
Sat Oct 09, 2021 4:49 pm
Forum: The GAM
Topic: Super Sport 15 Trailer
Replies: 8
Views: 442

Re: Super Sport 15 Trailer

How many bunks are provided on the trailer you will be using? (A numerical answer in a whole number would be appropriate.) This number will affect the optimum placement of bunks. The closer the outboard edge of the outboard lateral support bunk is to the inboard edge of the hull runner, the tighter ...
by jimh
Sat Oct 09, 2021 3:41 pm
Forum: The GAM
Topic: Super Sport 15 Trailer
Replies: 8
Views: 442

Re: Super Sport 15 Trailer

Any [advice on proper trailer set-up for a SUPER SPORT 15 boat] will be appreciated. Advice for proper trailer set up for a classic Boston Whaler boat is given in the REFERENCE section under the category "Trailering." There are six article available with cogent advice on trailering. The f...
by jimh
Sat Oct 09, 2021 10:23 am
Forum: TRIPS and RENDEZVOUS
Topic: 2021 Crooked River Run
Replies: 11
Views: 651

Re: 2021 Crooked River Run

Here are three images I managed to catch:

pauHana.jpg
Fig. 4. PAU HANA underway with David and Kathy. The hull was detailed and new graphics added for the boat name and home port.
pauHana.jpg (94.62 KiB) Viewed 407 times


Mischief.jpg
Fig. 5. Dave B at the helm of MISCHIEF, powered by an E-TEC 60 H.O.
Mischief.jpg (81.24 KiB) Viewed 404 times


As you can see above, the morning skies were overcast and direct sunlight was rare.

Those very nice graphics on PAU HANA were made by Janis at MAGIC BRUSH.

afterDinnerCleanUpCrew.jpg
Fig. 6. The after dinner clean up crew: Patience, Don, David, and Dave. Some amazing meals have come out of that small kitchen.
afterDinnerCleanUpCrew.jpg (99.55 KiB) Viewed 401 times
by jimh
Sat Oct 09, 2021 10:02 am
Forum: TRIPS and RENDEZVOUS
Topic: 2021 Crooked River Run
Replies: 11
Views: 651

Re: 2021 Crooked River Run

Dave B took some still images of the boats underway in the river and marsh:

drone1.jpg
Fig. 1. Unusual overhead view from astern by drone camera. The clouds look like we are heading into the Apocalypse, but we're always optimists about better weather ahead on these Fall cruises.
drone1.jpg (162.15 KiB) Viewed 411 times


crookedRiver.jpg
Fig. 2. Looking astern from the MISCHIEF 15 in the Crooked River on the way back. The sun has momentarily appeared.
crookedRiver.jpg (120.15 KiB) Viewed 411 times


underway.jpg
Fig. 3. Sam and Bob on the customized 16 and Don on the 17 DAUNTLESS underway in the Indian River marsh.
underway.jpg (94.72 KiB) Viewed 410 times
by jimh
Sat Oct 09, 2021 8:59 am
Forum: PERFORMANCE
Topic: Prop Calculations Produce Negative SLIP
Replies: 2
Views: 239

Re: Prop Calculations Produce Negative SLIP

The calculation of SLIP producing a negative value is most likely because the propeller pitch was understated. Modern propellers are generally not a constant pitch across the blade, so the stated pitch is more an index into the total effective pitch of the propeller. The addition of cup on the blade...
by jimh
Fri Oct 08, 2021 12:54 pm
Forum: REPAIRS and MODIFICATIONS
Topic: 1975 Johnson 85-HP Power Trim Actuator Sending Unit
Replies: 2
Views: 185

Re: 1975 Johnson 85-HP Power Trim Actuator Sending Unit

I am confused about the purpose of the part being sought.

Is the part some sort of trim position sending unit to be connected electrically to a gauge?
by jimh
Fri Oct 08, 2021 12:40 pm
Forum: REPAIRS and MODIFICATIONS
Topic: 1975 Johnson 85-HP Power Trim Actuator Sending Unit
Replies: 2
Views: 185

Re: 1975 Johnson 85-HP Power Trim Actuator Sending Unit

I looked at the BRP on-line listing of repair parts, but for a 1975 Johnson 85-HP engine model 85ESL75E 1975 there is no information about a power trim and tilt assembly listed. Your best resource is to contact a long-time OMC dealer who is old enough to be familiar with a 1975 engine. Or, locate a ...
by jimh
Thu Oct 07, 2021 1:33 pm
Forum: The GAM
Topic: Tony Wilde Crossing the Bar
Replies: 3
Views: 450

Tony Wilde Crossing the Bar

This morning a new post in MARKETPLACE advertised for-sale an OUTRAGE 18 once owned by Tony Wilde and named CETACEOUS. That post got me thinking anew about Tony, and when he passed away. I soon found a thread (on the old forum) begun August 12, 2013 in which Tony's great friend and boating partner, ...
by jimh
Thu Oct 07, 2021 8:51 am
Forum: REPAIRS and MODIFICATIONS
Topic: 2006 Dauntless 220 Forward Hatch Gas Supports
Replies: 2
Views: 210

Re: 2006 Dauntless 220 Forward Hatch Gas Supports

The force rating for a gas support strut specifies the amount of force needed to compress the strut. If a 40-lbs force strut is substituted for a 30-lbs force strut, there are two situations in which the change must be considered: -- when the hatch is in the open position: a strut rated at 40-lbs wi...
by jimh
Tue Oct 05, 2021 8:03 am
Forum: REPAIRS and MODIFICATIONS
Topic: Sealing Screw Fasteners on Deck; Free Water in Fuel Tank Cavity
Replies: 2
Views: 239

Re: Sealing Screw Fasteners on Deck; Free Water in Fuel Tank Cavity

Q1: [To seal screw fasteners on the center deck area of a Boston Whaler boat that covers the fuel tank area] what sort of sealant is recommended? what sort of sealant is recommended? BoatLife brand caulk is often mentioned as a good sealant. If a silicon-based caulk is used, the silicon should be o...
by jimh
Mon Oct 04, 2021 9:29 am
Forum: TRIPS and RENDEZVOUS
Topic: 2022 Lake Superior Edmund Fitzgerald Trip
Replies: 2
Views: 142

Re: 2021 Lake Superior Cruise

Kevin’s interpretation would suggest that vessels transiting near the wreck would be required to shut of their regular SONAR. It is a bit of a Catch-22: until I saw a SONAR echo that looked like it was from the wreck, how would I know when to shut off my SONAR?
by jimh
Mon Oct 04, 2021 8:55 am
Forum: REPAIRS and MODIFICATIONS
Topic: Garelick Auxiliary Engine Bracket
Replies: 2
Views: 177

Re: Garelick Auxiliary Engine Bracket

I infer from your question that your concern is in regard to the weight of the 6-HP engine. To determine the maximum weight rating for the auxiliary engine mounting bracket, contact the manufacturer. Then compare the maximum engine weight for the bracket with the weight of the new engine. Since the ...
by jimh
Sun Oct 03, 2021 9:25 am
Forum: VHF MARINE RADIO
Topic: Range of USCG RESCUE21 System
Replies: 1
Views: 225

Re: Range of USCG RESCUE21 System

I believe that the actual specification that the USCG RESCUE 21 coastal radio system is designed to meet is to detect a transmission from a 1-Watt radio with antenna at 2-meters (about 6.5-feet) above the water made for a duration of 1-second that is 20-Nautical-Miles offshore --about 23 statute mil...
by jimh
Sat Oct 02, 2021 8:25 am
Forum: PERFORMANCE
Topic: 1992 OUTRAGE 22 Re-power: Engine Brand and Model Reliability
Replies: 9
Views: 3368

Re: 1992 OUTRAGE 22 Re-power: Engine Brand and Model Reliability

That a new, modern outboard engine runs well for two seasons is not particularly unusual nor unexpected, and one should not make an inference on the reliability of the engine after only two seasons or 400-hours of use. Any engine manufacturer whose engines routinely exhibited problems or defects in ...