Need Info on Yamaha 8hp Outboard When It is Fully Tilted Up

I am planning to get that Yamaha motor as a kicker for trolling and backup. Unfortunately, I cannot mount it directly on the transom of my boat. The reason is that the transom only has one opening for the main motor. The boat has a container in each side of the opening. I cannot mount the motor over the container because the container is a flimsy structure. I will have to somehow mount the motor at the back of the transom.

I could have installed a manual-motor-lift (such as the one from Garelick); but I am looking for the version of Yamaha 8hp outboard that has a power-trim function. This means instead of having the outboard lifting straight up and down, I will have it tilting up and down.

Seem like the best way is to install a motor bracket behind the transom, mount the 8hp motor on the motor bracket, and has the 8hp motor kind of sticking out. The question is how far that I should have it sticking up. If it is not sticking out far enough, the cowl of the motor will hit the container that I mentioned above when the motor is fully tilted up. If it is sticking out to far, I am afraid that it will add too much stress on the transom. I want the motor bracket sticking out just far enough not to hit the container when the motor is fully tilted up.

My questions are: 1. What is the distance between the far end of the cowl and the motor mount when the motor is fully tilted up? 2. Any downside of doing this? 3. Any better idea?

Thanks in advance for any info.

Jay Chan

See "T8 tilted" on alt.binaries.pictures.sports.ocean

Trailering it down is possible because it doesn't extend below the bottom enough to be a problem. It's only a 12 degree deadrise but the trailer has it sitting high enough.

-rick-

Thanks again for measuring the length for me.

Jay Chan

CWM

Your boat must be much bigger than mine. Mine is a semi-V full 18-ft boat. I am hoping that I will only need no more than 20" shaft.

I am asking this here because I want to know how long the motor bracket needs to stick out. If it will be sticking out too far, I will have to forget about this (and stick with a manually operated motor lift such as one of those from Garelick) because I really don't want to put too much stress on the transom. Therefore, this is pre-mature for me to figure out the shaft length yet; I need to figure out the motor mounting method first before figuring out the shaft length, and then I can talk to the Yamaha dealer.

Thanks for the good info.

Jay Chan

I have a question though: How do you get away from leaving the motor down when you are towing the boat? Does your boat have a deep V hull? I doubt that I can do this because mine is a semi-V hull and the boat sits very low when it is on the trailer.

Jay Chan

NWS Forecast FZUS56 KMTR 151633 CWFMTR

COASTAL WATERS FORECAST NATIONAL WEATHER SERVICE SAN FRANCISCO CA 833 AM PST WED NOV 15 2006

POINT ARENA TO POINT PIEDRAS BLANCAS AND OUT 60 NM INCLUDING THE SAN FRANCISCO BAY AREA AND MONTEREY BAY

PZZ500-152330- 833 AM PST WED NOV 15 2006

..SYNOPSIS FOR THE CENTRAL CALIFORNIA COAST AND BAYS INCLUDING MONTEREY BAY...GULF OF THE FARALLONES...AND CORDELL BANK NATIONAL MARINE SANCTUARIES...

WINDS OVER THE COASTAL WATERS WILL REMAIN OUT OF THE SOUTH TO SOUTHWEST TODAY AS A FRONTAL BOUNDARY APPROACHES FROM THE NORTHWEST TONIGHT. THIS FRONTAL BOUNDARY WILL BRING A CHANCE OF RAIN ACROSS THE NORTH AND A CHANGE IN WIND DIRECTION TO A MORE NORTHWEST FLOW ON THURSDAY.

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PZZ550-570-152330- /O.ROU.KMTR.MA.F.0000.000000T0000Z-000000T0000Z/ POINT ARENA TO PIGEON POINT TO 20 NM- POINT ARENA TO PIGEON POINT 20 TO 60 NM OFFSHORE- 833 AM PST WED NOV 15 2006

TODAY NW WINDS 5 TO 15 KT. WIND WAVES 1 TO 3 FT. NW SWELL 5 TO 7 FT AT 10 SECONDS.

TONIGHT S WINDS 5 TO 15 KT. WIND WAVES 1 TO 3 FT. NW SWELL 4 TO 6 FT AT 10 SECONDS. RAIN LIKELY.

THU S WINDS 5 TO 15 KT. WIND WAVES 1 TO 3 FT. NW SWELL 7 TO 9 FT AT 10 SECONDS. CHANCE OF RAIN.

THU NIGHT SW WINDS 5 TO 10 KT. WIND WAVES 1 TO 2 FT. W SWELL 7 TO 9 FT. SLIGHT CHANCE OF SHOWERS.

FRI W WINDS 5 TO 15 KT. WIND WAVES 1 TO 3 FT. NW SWELL 7 TO 9 FT. SLIGHT CHANCE OF SHOWERS.

SAT NW WINDS 5 TO 15 KT. WIND WAVES 1 TO 3 FT. NW SWELL 6 TO 8 FT.

SUN W WINDS 5 TO 15 KT. WIND WAVES 1 TO 3 FT. NW SWELL 6 TO 8 FT. SLIGHT CHANCE OF RAIN.

...SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST ...

IN THE DEEP WATER CHANNEL AND ACROSS THE BAR...NORTHWEST SWELL 3 TO 5 FEET OCCASIONALLY TO 6 FEET DURING MAXIMUM EBB CURRENT OF 1.6 KT AT 12:09 PM AND 1.3 KT AT 11:20 PM TONIGHT.

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PZZ555-575-152330- /O.ROU.KMTR.MA.F.0000.000000T0000Z-000000T0000Z/ PIGEON POINT TO POINT PIEDRAS BLANCAS TO 20 NM- PIGEON POINT TO POINT PIEDRAS BLANCAS 20 TO 60 NM OFFSHORE- 833 AM PST WED NOV 15 2006

TODAY NW WINDS 5 TO 15 KT. WIND WAVES 1 TO 3 FT. NW SWELL 5 TO 7 FT AT 11 SECONDS.

TONIGHT NW WINDS 5 TO 15 KT. WIND WAVES 1 TO 3 FT. NW SWELL 4 TO 6 FT AT 10 SECONDS. SLIGHT CHANCE OF RAIN.

THU NW WINDS 5 TO 15 KT. WIND WAVES 1 TO 3 FT. NW SWELL 6 TO 8 FT AT 10 SECONDS. SLIGHT CHANCE OF RAIN.

THU NIGHT NW WINDS 5 TO 15 KT. WIND WAVES 1 TO 3 FT. NW SWELL 7 TO 9 FT. SLIGHT CHANCE OF SHOWERS.

FRI NW WINDS 5 TO 15 KT. WIND WAVES 1 TO 3 FT. NW SWELL 7 TO 9 FT. SLIGHT CHANCE OF SHOWERS.

SAT NW WINDS 10 TO 20 KT. WIND WAVES 2 TO 4 FT. NW SWELL 6 TO 8 FT.

SUN NW WINDS 5 TO 15 KT. WIND WAVES 1 TO 3 FT. NW SWELL 6 TO 8 FT. SLIGHT CHANCE OF RAIN.

The guys with bigger boats have been getting plugged traps. 10-18 crab in a trap. But commercial season opens today, so the pressure will reduce that. I run 5 traps. Abnd limit is 10 per person.

And where do you crab, close to shore?

Too bad it's not a 2 stroker. It wouldn't matter, then, especially if you took the stupid oil injection off it and premixed its gas the way a 2- stroker is supposed to be run...dry.

I like the lift idea hooked to the stern....the kind they use on the stern of outboard-powered sailboats that lifts the hole motor back then up to lock into a totally dry position above the stern while underway. The motor would be parked in its proper upright position where the OIL is not an issue. You can even work on it if it's broke, that way.

Larry

 Hope this helps,

 Sherwin D.

"jaykchan@hotmail.com" wrote:

The reason I ask, is because I have a 4-cycle weed eater,a nd it doesn'tmatter how you lay it, nor what angle you run it, there hasn't had a problem with oil leaking or foaming out of where ever it can get out.

Just curious....

If Jay can wait a day or so I'll try to remember to measure the clearance needed when tilted up.

-rick-

Love the "High Thrust". I'll bet it's as high as any 9.9hp outboard...putting out 9.9hp like it does...or is supposed to....(c;

Those marketing guys invent some great stuff, don't they?

I have a Yam 3, 2 stroker. You can carry it with one hand, even if the gas tank on top of it is full of premix 2-stroke gas! Funny thing is, I can't find the cooling water pisser on it. A little water comes out the pressure relief hole in the exhaust and it doesn't overheat so it must be fine. I'd still like to see water pissing out of it, but it never has. Little thing planes a 9.6' Watertender dingy if I set in the middle seat (255 #) and leave my 2 gallon jerry can in the bow.

One of the dock neighbors of Lionheart had the boat sitting in just awful conditions, flooded with rainwater, its bottom covered with beasts between his sailboat and the dock. I asked him if he'd like me to pump it out, before it sank which I found out is impossible full of water, with my rechargeable bilge pump. "You want it? It's yours. I'll bring the title from Atlanta next time I come down", he says. Never in my life have I ever turned down a free boat that was still afloat. Waste Marine sells them for $500. Another yachtie friend wanted me to come put up a motion sensor light over his garage doors. While I was on the ladder, I told him of my good fortune getting the free boat. When I was about to leave, he comes out with this hardly-used Yamaha 3 and says, "Here. It'll need a motor. My back can't stand riding in a dingy and we only used it twice. It's been taking up garage space ever since."

The most I got in it was the $35 to re-register it and renew the license. My story of a "free boat" fell on deaf ears at the tax and license offices....(c; The county wants $13/year. They think its a Hatteras.

My neighbors' kids think it's a Redneck Spa. They fill it with water sitting on the lawn and have more fun in it than any adult could have....

Larry