| Author |
Message |
    
chris_spring
Senior Member
Username: chris_spring
Post Number: 235
Registered: 02-2019
| | Posted on Tuesday, December 27, 2022 - 12:30 pm: | 
|
Elsewhere you will see I am inquiring about engine work on my Kingfisher A2. The reason for that is that I currently have on order two sets of plans from the Mystic Seaport Museum. One set is for a yacht tender dating 1905. the plans should be here any day now.
Once I get those I will determine the feasibility of building the boat and incorporating the Kingfisher engine into it.
Tentative launch date would be spring of '24.
Cheers!
 |
chris_spring
Senior Member
Username: chris_spring
Post Number: 240
Registered: 02-2019
| | Posted on Tuesday, January 03, 2023 - 04:25 pm: |
|
For your viewing pleasure.
There is a lot here to mull over. My plan is to power it with the Kingfisher which I am currently overhauling.
I have almost everything I need.
The plan shows a transmission. That I don't have. I'm not sure where I could find something suitable or how feasible building one would be.
The plan also shows a transversely mounted fuel tank under the front seat. It also has a wobble pump and a header tank. I have the header tank.
The drawing shows a 3/4" propellor shaft, a stuffing box, and a 10x8 prop. Of those I have 2 out of three.
This could be really, really cool.
Cheers!
https://www.youtube.com/watch?v=V-ldWGOvgXI |
chris_spring
Senior Member
Username: chris_spring
Post Number: 242
Registered: 02-2019
| | Posted on Thursday, January 19, 2023 - 04:34 pm: |
|
Work continues on the feasibility stage of building the Lawley Tender.
Today I set up a 14' long lofting table. Early next week I expect to start lofting. The decision whether to build or not will come after I've had a good chance to look at it, and finish costing it out. I hope to take the decision by late February.
If it is a go I will work on as many small parts, molds etc before the end of winter. They can then be set aside with a view to doing most of the work next winter.
In addition to the header tank, I now have a transfer pump which dimensionally is very close to the original. If I go ahead with this I will have to have a main tank made to complete the system.
Cheers! |
miro
Senior Member
Username: miro
Post Number: 1214
Registered: 11-2001
| | Posted on Friday, January 20, 2023 - 09:00 am: |
|
Chris, have you considered a future installation of an electro-drive?
A growing number of DisPro boats are being converted, from the copper jacket engine to electro-drives, for several reasons - it's quieter by a lot ( even though it's called a Silent DisPro), is less smelly, less crap in the bilge over time, and has a FWD -N -Rev to greatly assist in manoeuvring in and out of docks and trailers.
The conversions are using 3.5 kW motors - which is way over-kill given the copper jacket engines are rated a 2 to 2.5HP or the equivalent of a 1.0kW electric motor.
So, while you are in the design stage, maybe consider what an electro-drive conversion might need.
miro |
miro
Senior Member
Username: miro
Post Number: 1215
Registered: 11-2001
| | Posted on Friday, January 20, 2023 - 09:07 am: |
|
Have you considered a conversion, later, to an electro-drive?
More DisPros are being converted from the copper jacket or St Lawrence motors to e-drives.
The e-drives are 3.5kW which is way over-kill, since the copper jacket engines are rated at 2 , 2.5 HP or the equivalent of 1.0-1.2kW .
Boaters are finding that it's much quieter and much easier to manoeuver when docking or on-off trailer.
I'm considering the conversion of my DisPro to e-drive.
Miro |
miro
Senior Member
Username: miro
Post Number: 1216
Registered: 11-2001
| | Posted on Friday, January 20, 2023 - 09:10 am: |
|
dunno wha=happened .. . first text got deleted, then re-appeared after I wrote the second - oh well Windows and Explorer . . .miro |
chris_spring
Senior Member
Username: chris_spring
Post Number: 243
Registered: 02-2019
| | Posted on Friday, January 20, 2023 - 02:42 pm: |
|
Hi Miro.
In fact I had considered electric. This hull would lend itself nicely to that. However, for now I'm looking for something that will showcase that copper jacketed engine.
Cheers! |
chris_spring
Senior Member
Username: chris_spring
Post Number: 247
Registered: 02-2019
| | Posted on Wednesday, February 22, 2023 - 08:24 am: |
|
Work continues. I have yet to take the "go" decision, but it is getting closer.
Lofting is complete. I have made patterns for all of the station molds, the stem, and the keel.
The plans leave much open to interpretation since the lines were taken off the existing boat,and the drafters were not permitted to do any dis-assembly. As a result I found several errors in the plans and have a lot of questions pertaining to the design and joinery of the keel.
At issue as well is how I will bore a 1" prop shaft tunnel through about 24" of wood and getting it perfectly centred,and perfectly aligned at the correct angle.
I think the smartest thing to do is to mock a stem and keel up out of construction grade spruce. Once I have that sorted I can repeat it in oak. It will be more work, but it could be worth it.
The engine work has yet to be completed. I'm hung up for a new set of rings and a carb float, but that's another story. I'll rejoin the chase on that sometime in March.
If at all possible I'd really like to go ahead with this project. It simply has so much going for it that I am really being drawn in.
I love the lines. And I find other things such as the fuel system interesting.
The main fuel tank is located at floor level.It should hold about 8 hrs fuel. From the main tank, fuel is then manually pumped to a header tank located higher up on a bulkhead. From there it is gravity fed to the carburetor. The header tank should provide about 1 1/2 hrs fuel before more needs to be transferred. Transferring fuel is easily accomplished.
So we'll see where this goes. In the meantime it has certainly been an interesting exercise.
Cheers! |
narrabay2
Senior Member
Username: narrabay2
Post Number: 260
Registered: 10-2019
| | Posted on Saturday, February 25, 2023 - 03:39 pm: |
|
WOW very ambitious undertaking Chris. In my hometown there's a lifetime wood boat builder who publish boat building videos. It's fascinating to watch his work. He explains the techniques and tricks really well. It could either be just enjoyable or maybe even useful.
https://youtu.be/RORoex0TTfY |
chris_spring
Senior Member
Username: chris_spring
Post Number: 248
Registered: 02-2019
| | Posted on Saturday, February 25, 2023 - 03:50 pm: |
|
Thanks Narrabay2.
I'm a big fan of Louis'. I watch, listen, and learn from every video he puts out.
Cheers! |
richarddurgee
Senior Member
Username: richarddurgee
Post Number: 4196
Registered: 11-2001
| | Posted on Friday, March 03, 2023 - 01:09 pm: |
|
*
If you decide on a gear, I have a few in and out gears, reverse gears and transmissions. Let me know what might work and i'll check what i have and get photos !
* |
chris_spring
Senior Member
Username: chris_spring
Post Number: 250
Registered: 02-2019
| | Posted on Friday, March 03, 2023 - 08:49 pm: |
|
richarddurgee.
Many thanks. I will keep that in mind.
Cheers! |
miro
Senior Member
Username: miro
Post Number: 1221
Registered: 11-2001
| | Posted on Thursday, March 09, 2023 - 03:48 pm: |
|
Chris - I know the feeling well - drilling out that hole on the shaft log.
You have luxury of doing it when the chunk of wood is not in the boat - I had to do mine after I repaired the stern post - not pleasant memories.
But . . .
I practiced a bit - made a very sharp spear point drill out of a twist drill - that was a good 1/2 drill so it was stiff and not likely to bend. The drill was welded to an extension of carbon steel. Drilled out the hole.
Then made a spade drill with a 1/2 in snout that would lead the spade cutters along the right path.
The shaft is 1.125 in diameter. I made the spade drill that diameter, and tested it OK of bore diameter.
I figured the down angle should be 5 degrees. After making the hole and doing some careful measurements, it measured to be 4 1/2 degrees.
I then tried fitting the shaft - - it was tight. I got an adjustable reamer and carefully opened up the hole - small increments, - until I was satisfied with the slightly sloppy fit.
But the whole process required time and patience.
Miro |
chris_spring
Senior Member
Username: chris_spring
Post Number: 254
Registered: 02-2019
| | Posted on Thursday, March 09, 2023 - 05:48 pm: |
|
Hello Miro
This week and next I am working on mocking up the stem in spruce.That way I can figure out the best way to cut the rabbett.
The week following will be when I tackle the keel in spruce. I'm figuring on building the keel in about a half dozen parts using epoxy glue.
Since I will be building up the deadwood anyway, I think I'll build the section containing the propeller shaft tunnel in 3. That way I only have to drill through about 9" of wood at a time.
The three pieces can be joined precisely straight afterward. And with the three pieces complete I can mill them to size and fit them into the deadwood at a 3 degree angle as per the plan. So my job should be way easier than the one you had.
Since I have never built a boat before, the objective is to make all my mistakes in construction grade spruce before moving to the actual oak I will use for the boat. Once I have the plan of attack figured out I simply need to repeat it in oak.
It is way more time consuming but no doubt it will be cheaper.
I have yet to take the decision as to whether I will actually build the boat. The spruce mockups will give me an idea as to whether continuing is within my skill level.
Cheers! |
chris_spring
Senior Member
Username: chris_spring
Post Number: 255
Registered: 02-2019
| | Posted on Wednesday, March 15, 2023 - 07:14 am: |
|
It looks like the build is a go. I'd like to have it in the water in 2024.
I'm continuing to prepare for the build itself which will begin next fall.
Cheers! |
miro
Senior Member
Username: miro
Post Number: 1222
Registered: 11-2001
| | Posted on Friday, March 17, 2023 - 09:39 am: |
|
Ahhh - well, congrats, I think.
My experience with building boats is that you will
(need to ?) become obsessed with the project.
As with everything else there will be hills of elation and valleys of despair.
But you will (I guarantee) be pleased with the outcome.
miro |
