Start to Finish: Building Our 50' Skater
11-16-2016, 09:46 PM
#863
Registered
no
yep
Charter Member
11-16-2016, 09:54 PM
#865
Registered
The photo is of my windshield.
The windshields in most boats have really bad distortion in the corners. The picture is looking through the bottom outside corner of my windshield where it has the tightest compound curve and its pretty much flawless. Jim Lee at Lee Aerospace made a new CNC'd mold to make my windshield and by using the same techniques as he uses to make the aircraft windows its so distortion free that you can not really "see" the window.
When we are looking through a window for hours straight the distortion in some windows will give you eye strain and headaches. We may be looking through the corners of the windshield trying to see land or a boat that is 12 miles away and a little bit of distortion could make it disappear, or change locations.
[ATTACH=CONFIG]561706[/ATTACH]
The windshields in most boats have really bad distortion in the corners. The picture is looking through the bottom outside corner of my windshield where it has the tightest compound curve and its pretty much flawless. Jim Lee at Lee Aerospace made a new CNC'd mold to make my windshield and by using the same techniques as he uses to make the aircraft windows its so distortion free that you can not really "see" the window.
When we are looking through a window for hours straight the distortion in some windows will give you eye strain and headaches. We may be looking through the corners of the windshield trying to see land or a boat that is 12 miles away and a little bit of distortion could make it disappear, or change locations.
[ATTACH=CONFIG]561706[/ATTACH]
Last edited by BigSilverCat; 11-16-2016 at 09:57 PM.
11-16-2016, 09:58 PM
#866
Registered
I'm guessing those boxes are spare parts to carried on the longer runs. Hopefully unused.
edit ; I see I guessed bad wrong....
very nice work
edit ; I see I guessed bad wrong....
very nice work
Last edited by buck35; 11-16-2016 at 10:06 PM.
11-17-2016, 10:18 AM
#868
Registered
11-17-2016, 11:48 AM
#870
Registered
Blow out tube:
The first time I took the boat to the water I was rushing to get a quick test to make sure the transmissions worked, steering, ect. and to make sure the boat would float.. before it was going to be tied up getting a special coating on the whole boat ( I will post more on this tonight).
I knew I would need blow out tubes for the props but did not have time to make them so when we tried to get on plane we could not get any boost so it had no power. While the coating was being put on the boat I made the blow out tubes. Was not sure what size I would need so I went big, there 4" dia piece of stainless elbow with a collar welded to it for the rubber hose to clamp to then some gussets and flanges welded to the bottom to bolt down on the arneson.
They ended up being too big and once it broke loose the prop would not get enough bite to get on plane so now I have just a 2" dia piece of rubber till we get more testing done.
The first time I took the boat to the water I was rushing to get a quick test to make sure the transmissions worked, steering, ect. and to make sure the boat would float.. before it was going to be tied up getting a special coating on the whole boat ( I will post more on this tonight).
I knew I would need blow out tubes for the props but did not have time to make them so when we tried to get on plane we could not get any boost so it had no power. While the coating was being put on the boat I made the blow out tubes. Was not sure what size I would need so I went big, there 4" dia piece of stainless elbow with a collar welded to it for the rubber hose to clamp to then some gussets and flanges welded to the bottom to bolt down on the arneson.
They ended up being too big and once it broke loose the prop would not get enough bite to get on plane so now I have just a 2" dia piece of rubber till we get more testing done.
Dave is running a heavy boat with stoker Dmax and 6spd Allison trans setup, so having enough torque and spooling is not an issue. He's currently testing with a 16.5 x 35 x 6 and a 17.5 x 38 x 5. The 35p is a Rolla and comes right up on plane. I can see in his logs that prop is slipping for bit then hooks up within a few seconds at steady throttle once on top. The Hering 38P he recently purchased will spin clear up to 4000R's shaft speed, but never hooks up. So he can't get on plane with it no matter how he trims the drive. He also tested with a tube and found it no help.
He then gauged both props and found the primary difference in design was cup. Seems the gas engine design [Hering] uses considerably less cup than the Rolla from a diesel setup. So the Hering is currently getting modified to match cup of the Rolla and will test again this weekend.
Dave said he'd like to chat sometime since you both run that twin fin setup. Am sure Rik will vouch for him, he's a serious hands on guy who also runs a turbine cat. Here is the gauged difference in cup to review.
[ATTACH=CONFIG]561713[/ATTACH] [ATTACH=CONFIG]561712[/ATTACH]
Last edited by kidturbo; 11-17-2016 at 11:52 AM.
