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| Alva B | ||
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Moderators: Winston, aew
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| Author | Post | ||
| donfarr |
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 Registered Member #2001 Joined: Fri Dec 23 2011, 09:51pmPosts: 1981 | Glad to have you back Raymond, many good and new things have happened to this site since you last posted, we now are in colaberation with 2 more sites, SOS(ships of scale) and the new site NBM(navy board models) NBM HAS A FACE BOOK PAGE GROWING BY THE DAY, PLEASE AS YOU ARE ONE GREAT MODELER JOIN BOTH GROUPS, any questions on this contact me, or better yet Winston, or DAVE........TO DAVE ANOTHER GREAT IDEA FROM YOUR FERTILE BRAIN, PLEASE POST SOME OF YOUR THINKING ON FUTURE PROJECTS ON THE NBM SITE it needs refresining , even if they do not materilize, like your proposed article on planking etc. THANKS Don | ||
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| Raymond Deliz |
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  Registered Member #4329 Joined: Thu Dec 12 2013, 06:21pmPosts: 383 | Daves, I agree with you in that they all seem to follow the same concept in design yet from one shipwright to another minor changes were made. I think it will make for a nifty model where one can incorporate wooden frames and adding metal sidings but leaving certain areas open to view the boiler and engine. Don, It has been far to long and am pleasantly pleased to see that MSB is expanding. I will take you up on that offer and join both sites. Once again, thanks for the info, Ray. | ||
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| donfarr |
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| Registered Member #2001 Joined: Fri Dec 23 2011, 09:51pmPosts: 1981 | Hi Ray, Your modeling is terrific including your craftmanship.....also make sure you join NBM facebook page also. Don | ||
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| daves |
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| Registered Member #105 Joined: Wed Jul 15 2009, 12:01pmPosts: 3560 | Raymond if you are interested in building one of these old wooden steam tugs I have a good start on the Alva B modeling plans. I would be more than happy to work along with you to finish up the plans and get you started | ||
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| Janos |
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  Registered Member #3329 Joined: Thu Jul 05 2012, 01:26pmPosts: 77 | Dave great to see a different model on your drawing board! Looking forward to seeing it developing. What is your plan for the steam engine 3D model? Janos | ||
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| daves |
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| Registered Member #105 Joined: Wed Jul 15 2009, 12:01pmPosts: 3560 | I am working with a great 3D artist I can do the basic drawings and Stacy can do all the detail work and 3D printing the plan is to create the 3D files for print on demand. I thought of making master molds for the engine parts for a possible kit but the cost is very expensive and there may not be enough interest in a kit to cover production costs. | ||
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| Feathermerchant |
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  Registered Member #5095 Joined: Mon Jan 08 2018, 08:46pmPosts: 4 | Dave, interesting process you are providing. I have two comments: 1, You should give credit for the plans for the Alva B. They are part of the plans collection provided by American Ship Building Co. and Predecessors that were distributed to BGSU, Great Lakes Historical Society and the Dossin Museum and that they are available from Bowling Green State University who microfilmed the total collection. 2, You wrote: "These was a question as to why the forward cabin floor slanted when the Alva was floating. well dah! it is not a cabin it is a coal bunker so the floor is slanted so the coal slides toward the door as it is being used. Go back to your April 01, 2017 entry showing the cross section and deck plan. The cross section is a view from the engine room. The engine view looks aft, the boiler view looks forward. On either side of the boiler is a closed in space. On the deck plan, starboard side are three squares which are coal chutes. The Alva B was a harbor/river tug and was crewed by at least four crew members - captain, engineer and two deck hands. The engineer could take care of both the boiler and the engine. To do that he needed to access the coal bunkers from both sides of the engine deck. (boiler has two fire holes). He would bring up the fire in the boiler by feeding coal through the fire box until steam pressure came up and then started the engine. His routine then would be feed coal to the port fire door, feed coal to the starboard fire door, check the engine bearings for overheating and oil if necessary, then repeat the process. This was all a manual process. To check the bearings, the engineer would place the fatty part of his hand on the bearing as the crank came up and if the bearing was hot, feed oil into the bearing to reduce the friction heat. From the drawings, you do not enough information on how far forward the coal storage extended, but the engineer would have the responsibility to maintain a somewhat level ballast by taking coal from both bunkers to maintain level side to side. Since the engine room and coal bunkers are mid-section on the hull he would not affect the fore to aft LWL. Dave, do you plan to provide a lumber kit for the Alva B when you have finished with your drawings. By-the-way, the engine looks to be high pressure by the size of her cylinder. | ||
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| daves |
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| Registered Member #105 Joined: Wed Jul 15 2009, 12:01pmPosts: 3560 | I did have a lot of unanswered questions as I was developing a set of modeling plans. like the setting of the frames which did get an answer they are perpendicular to the LWL. still don't know why that front floor is built on a slant. also a few questions about the stern construction. I stopped drawing the plans for now until I can do a bit more research. my idea was to draw a set of modeling plans, break down all the hull and deck framing into laser cutting files. i was going to 3D design printing files for the engine and boiler and actually provide an engine kit. the issues the cost of time and money to do such a project was way more than the demand for a kit and no one interested in building the prototype. | ||
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| Feathermerchant |
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| Registered Member #5095 Joined: Mon Jan 08 2018, 08:46pmPosts: 4 | Dave, thanks for the response. We have a member who is working to build a CAD/Sketchup presentation using the plans for the Alva B. Let me check with him on his progress. I don't know if he plans to build a model or is just working with the plans. | ||
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| Feathermerchant |
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| Registered Member #5095 Joined: Mon Jan 08 2018, 08:46pmPosts: 4 | Dave, since you are looking a 3D printing of the engine, thought I would pass this on for your research. Back about 9 years ago, I did a comparison of tugs by Union Dry Dock. The Alva B had a 22" bore x 24" stroke, 425 hp 2 120 rpm, HPNC (High Pressure Non-Condensing) engine built by Whitman Co., Buffalo, NY and a 8'2" x 15", 140 psi, firebox boiler, built by Lake Erie Boiler Works, Buffalo, NY. Of the 11 tugs built between 1888 & 1893, 10 had HPNC engines of which 9 were built by Whitman Co. All but two of the 11 firebox boilers came from Lake Erie Boiler Works. | ||
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