Author Topic: 30ft 1890's navy steam launch 1/6th scale  (Read 3971 times)

Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #45 on: September 21, 2019, 11:45:14 AM »
cut and milled the stock for the bearing straps,milled the wedge slots in one and managed to break my only good 1/16th end mill :Mad:, have a 5 pack of new ones on order..  will work on few other parts for a few days while waiting,, then its a week of vacation,, Oct. will be a slow month in the shop,, weekend of the 12th is the 1/96th fleet gathering in Rocky Mount NC, around 100 RC model warships,, to add to this Halloween gets a little overdone at the house,, we've been told by the neighborhood that we are required to keep doing it!!!
« Last Edit: September 21, 2019, 02:20:22 PM by tghs »
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Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #46 on: October 05, 2019, 12:51:02 PM »
milled the steel stock for the bearing straps also milled up a former to bend them over.. gave the straps a quick annealing and the former  received a quick hardening.. center pin to keep things in place during the bending.. test fitting after the bending and trimmed to size,, the wedge slots will need some needle file finishing work, the straps will get a quick hardening once the are all finished..
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Offline Vixen

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #47 on: October 05, 2019, 12:58:26 PM »
Some nice intricate parts there. well done. :ThumbsUp: :ThumbsUp:

What do you use for the red marking out? Is it a Sharpie pen or similar?

Mike
It is the journey that matters, not the destination

Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #48 on: October 05, 2019, 01:32:42 PM »
dykem red layout dye.. added it to a tool order, was hoping it would show better lines on the brass and bronze, still haven't decided on that but I have a bottle to use up..
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Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #49 on: November 15, 2019, 09:44:07 PM »
had to make an emergency 2 week trip (things are ok) got back into the shop a bit the last few days,, connecting rods are completed,, along with the cross-head slippers,, some 1/8 inch spacers on the frame feet along with  some material removal corrected some connecting rod/frame interference.. so next week the base and frames should all get bolted together.. as the block and it parts will be closer to the ST plans maybe things will move ahead at a better pace.. without a camera today otherwise there would be pics..
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Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #50 on: November 19, 2019, 12:58:00 AM »
had the bottom end all setting together,, setting a weight on top of the frames everything turned and went up and down nicely, working on getting the frame feet a bit more level so nothing will bind when it all gets bolted together..the con rod pivot pin will get drilled for the threaded piston rods along with a machined flat for a lock nut..
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Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #51 on: November 19, 2019, 01:55:24 PM »
applied some JB weld to the feet bottoms as leveling/bedding compound,, clamped the frames in the building jig and wet sanded the compound down on a known flat surface,, this gentley corrected any problems, all feet were showing a little brass in spots when finished,, adding the frame crossrods and setting the unit on the base everything turns nicely with just the block weight holding things in place.. time to mark,drill and bolt this together..
« Last Edit: November 19, 2019, 04:01:56 PM by tghs »
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Offline crueby

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #52 on: November 19, 2019, 05:41:38 PM »
Neat trick. I like the masking-tape 'formwork' for the epoxy.

Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #53 on: November 20, 2019, 12:55:06 AM »
got a bolt in each foot and after a little tweaking and turning the crank and rods are working easy and smooth,, so the next no turning back step is to remove the tabs on the block that would have been used in the ST mounting.. maybe this madness will work.. on another good note I have what should be a very nice steam pitched prop on the way..
« Last Edit: November 20, 2019, 12:59:19 AM by tghs »
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Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #54 on: November 20, 2019, 05:43:23 PM »
looking a little closer to prototype all the time,, getting close to marking all the parts and taking things apart for final finishing..
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Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #55 on: November 22, 2019, 06:51:52 PM »
turned a few more castings into parts,,stock ST castings for the lowers,, brass castings for the tops,, getting close to mounting the block to the frames,, thought I would have to add a spacer for clearance with the packing glands but adding the 1/8th inch to the feet looks to have resolved things..
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Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #56 on: November 25, 2019, 09:39:18 PM »
trimmed the cylinder covers to fit,, milled the lower covers clamped to the block to get a flat surface to mount to the frame tops,, have to make a drilling jig to get the mounting holes correctly placed,, did a little test with some 5/32 rod (piston rod) things should mount up well..
« Last Edit: November 26, 2019, 12:59:09 AM by tghs »
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Offline crueby

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #57 on: November 26, 2019, 01:48:44 AM »
Coming together great, very well done.   :popcorn:

Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #58 on: November 27, 2019, 08:52:50 PM »
the block has had the mounting tabs removed,, worked on the steam chest,, the steam pipe between the HP and LP mounts high on the LP chest to the point that an extended tab is used for the upper bolt on the flange,, there is also a lip on the upper edge at the cover,, decided to do these details,, milled the LP chest for two 1/8" brass pieces, with room to mill things flat after soldering.. things silver soldered up well and were milled to shape,, (note the "clips" for soldering are titanium strips, bend to the shape you need and they hold things in place,, Rio grande jewelry sells them)
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Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #59 on: November 30, 2019, 04:26:47 PM »
carefully looked at the steam ports on the block and milled another 1/32 off each end, looked at the way-bar/valve rod bracket castings and decided that the valve chest could also be thinned by 1/16th still leaving enough room for the 4 mounting bolts,,so the entire unit was shortened by 3/16ths ,, the length of Stuart Turner engine was the furthest out of scale dimension on this project,, the navy block casting was very compact in length, most likely complex to cast in full size..
« Last Edit: November 30, 2019, 04:34:35 PM by tghs »
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