Author Topic: 30ft 1890's navy steam launch 1/6th scale  (Read 84021 times)

Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #225 on: October 13, 2020, 10:31:33 PM »
several years back I had ordered some ginger and orange preserves, 4 jars, high end stuff!!! the box was on the front porch and there was a line of ants,, one out of the three jars survived, just one layer of thin bubble pack...
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Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #226 on: October 16, 2020, 11:23:08 PM »
did a little more hot work today,, fitting a soldered crankshaft,, have to shape the webs and clean it up a bit..
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Offline crueby

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #227 on: October 17, 2020, 12:21:53 AM »
Slim seems happy with it!  The new flux work better than the old can?

Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #228 on: October 17, 2020, 12:40:25 AM »
it worked, but the solder did not want flow as well I'm used to.. I still might do another loctite crank..(getting good at making webs)
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Offline crueby

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #229 on: October 17, 2020, 12:48:15 AM »
it worked, but the solder did not want flow as well I'm used to.. I still might do another loctite crank..(getting good at making webs)
Which silver solder are you using? I've noticed that the farther I go towards the Easy or Extra Easy grade the more it flows. Usually I use the Medium, but sometimes the lower grade is handy. Odd names, but at least they seem to be universal.

Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #230 on: October 17, 2020, 03:06:39 PM »
have to check the pack on monday, most likely stay-silver 15,, was gifted several packs a while back,, always flowed well for me,, many of the chambers I keep running had water cooled heat exchangers,, the old units were failing, to fit a replacement required a steel to copper joint and about ten more copper to copper..
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Offline crueby

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #231 on: October 17, 2020, 03:21:42 PM »
have to check the pack on monday, most likely stay-silver 15,, was gifted several packs a while back,, always flowed well for me,, many of the chambers I keep running had water cooled heat exchangers,, the old units were failing, to fit a replacement required a steel to copper joint and about ten more copper to copper..
That is a very different type than what I use - the Stay-Silv-15 is a copper/phosphor brazing rod with only 15% silver. The style I use is the jewelry-industry silver solder wire, which is usually copper/zinc with 50 to 75% silver, comes in 20 and 22 guage wire, flows very well. I never tried the Stay-Silv type so I dont know how they compare.

Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #232 on: October 23, 2020, 08:45:26 PM »
not being totally happy with the last soldered crank decided another attempt at a loctite crank was in order,, getting really good at machining web sets now.. I did do a light diamond honing on one of the 5/16th chucking reamers,, it seemed to give better results,, the webs fit snug dry, but slide well with an added drop of oil.. cleaned all with some acetone and using my space gauges glued up the crank.. thinking about setting up the unimat in drill press mode as it is much more sensitive than the mill when it's time to drill for the pins. Gave slim the task of watching the loctite cure over the weekend..
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Offline Johnmcc69

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #233 on: October 24, 2020, 12:30:18 AM »
"Gave slim the task of watching the loctite cure over the weekend.." :Lol:

 I hope the crankshaft works out for you, everything is looking real good & closer to running.
 :ThumbsUp:
 :popcorn:
 John

Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #234 on: October 27, 2020, 06:59:39 PM »
carefully drilled the 8 just a smidge smaller than 1/16th through holes to pin the crank,, did some test drilling first,, if I set the mill at full speed plus lots of oil things drilled well, used a syringe and needle to add oil and flush out chips,, lots drill-back-out-oil-repeat.. lightly sanded the 1/16th pins cut from rod..all cleaned and drove them in with 603,, trimmed off the pins and sanded the webs to shape,, I might of got the first crank to warm during this process,, so a tub of cold water was next to the belt sander, quenching made sure the new crank never got even warm.. filed the bearing caps lightly and honed the bore,, fitted the new crank and after a few minutes of hand turning it's very tight fitting but rotates freely and smooth.. still have to cut away the shafts sections but so far this is a much better crank.. slim is already taking credit for the improvements..
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Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #235 on: October 28, 2020, 11:09:19 PM »
leaving the crank in the base frame for support the shaft sections were carefully sawn away.. a few minutes on the belt grinder (again quenching often to prevent heat building up) to clean things up and it looks like crankshaft.. all remained nice and true. it will spin freely.. I'm almost back where I was 2 weeks ago..
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Offline Admiral_dk

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #236 on: October 29, 2020, 12:55:15 PM »
Looks good and fingers crossed that it will pass your final test  :ThumbsUp:

Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #237 on: October 31, 2020, 01:16:31 PM »
had to do some fine work to get the connecting rod bottom ends fitting well.  added an oil hole to the upper bearing block.. thinking that a small tube bent and mounted along the connecting rod will act as an supply for the bearing.. there is evidence that this was done.. also thinking oil box with 3 tubes feeding the mains,, good photo of the method used to lube the eccentrics ,, just kind of wondering about bending very small tubes,, maybe I can use a syringe to draw cerrobend up into the small tubes..  The engine is back together with the new crankshaft and waiting on getting the valve timing set.. normally all free time this week would have been spent setting up halloween..(photos from some past years)
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Offline crueby

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #238 on: October 31, 2020, 01:44:26 PM »
Nice to see that Slim has a bunch of family and pets nearby!

Offline tghs

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Re: 30ft 1890's navy steam launch 1/6th scale
« Reply #239 on: October 31, 2020, 04:07:35 PM »
Slim might feel a bit "out-scaled" but come to think of it he might be the right size to ride one of the cats (that's all the shop needs late at night)
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