Kearsarge Windlass Engines

[crueby]

It could also be two robot shoes. So steel shoes? Or safety shoes for workshop elves!

Michael

Yes!   

[steam guy willy]

Hi "C" , Just wondering why the bearings are that shape ??  it looks like there is something that might be added to them . I have not seen bearings like that before ??  looking good  cheers 
"W"

[crueby]

Hi "C" , Just wondering why the bearings are that shape ??  it looks like there is something that might be added to them . I have not seen bearings like that before ??  looking good  cheers 
"W"

Hi Willy,
 
It must be a naval engine thing, I've seen this same style on several ship engines so far.  Here is the same shape on the Sabino engine (real one, not the model):

You can see some alignment pins and shims in the center joint, that hole at the top of the bronze piece is the oil hole, when the picture was taken the oil drip line was removed for the winter. This design is pretty compact and lightweight, they have removed a lot of material around the side bolts to keep them lightweight. excess moving mass at the crank pins just adds vibration at higher speeds, so that would be important.
Here is the same shapes on the con rods for the Liberty ship engine, took this picture last summer when I took the cruise (glad I went last year, they had to cancel the spring cruise this year when that cargo ship knocked down the bridge in Baltimore Harbor)

The Ohio engine had the same design bearings too. The water pumping engines I have plans for do not use this design for the bearings. 

Chris

[Kim]

It could also be two robot shoes. So steel shoes? Or safety shoes for workshop elves!

Michael

Are steel shoes like cement galoshes?   

Kim

[crueby]

It could also be two robot shoes. So steel shoes? Or safety shoes for workshop elves!

Michael

Are steel shoes like cement galoshes?   

Kim

Maybe thats how they handicap Olympic swimmers, like adding weight to the saddles on horse racing?        

[steam guy willy]

Hi Willy,
 
It must be a naval engine thing, I've seen this same style on several ship engines so far.  Here is the same shape on the Sabino engine (real one, not the model):

You can see some alignment pins and shims in the center joint, that hole at the top of the bronze piece is the oil hole, when the picture was taken the oil drip line was removed for the winter. This design is pretty compact and lightweight, they have removed a lot of material around the side bolts to keep them lightweight. excess moving mass at the crank pins just adds vibration at higher speeds, so that would be important.
Here is the same shapes on the con rods for the Liberty ship engine, took this picture last summer when I took the cruise (glad I went last year, they had to cancel the spring cruise this year when that cargo ship knocked down the bridge in Baltimore Harbor)

The Ohio engine had the same design bearings too. The water pumping engines I have plans for do not use this design for the bearings. 

Chris
[/quote]. Hi Chris thanks ...actually as they are castings  they do save metal... and cost  and less swarf and machining of course
Thanks .. and as it is an exact copy then they must be like that  !! cheers   and are they also numberd ?
Willy

[crueby]

Thanks  Willy!  Yes, I  do number stamp bearings, it takes such a tiny difference to  make them bind up. Learned it the hard way years ago when I  didn't  number them, and they got mixed up. Took a long time to sort them out again, it was on engine bed bearings so there were a lot of combinations.   

[cnr6400]

[/quote]Maybe thats how they handicap Olympic swimmers, like adding weight to the saddles on horse racing?        
[/quote]

Nah, they put lead shot in their meatball subs!   

[crueby]

Maybe thats how they handicap Olympic swimmers, like adding weight to the saddles on horse racing?        


Nah, they put lead shot in their meatball subs! 

Ouch, some heavy s...warf!

[crueby]

Today's parts were the crosshead slider blocks. I made these all out of bronze, though the originals were a cast steel with bronze liners. These will attach to the piston rod/con rod holders, to be made from the larger steel blocks in the picture.

[cnr6400]

 

[crueby]

Started in on the crosshead blocks this morning. They are a complex shape, with a vertical cylinder to hold the piston rod at the top, and another horizontal one, cut through in the middle, to hold the con rod little end. I'm starting out with the vertical cylinder on top, drilled/bored the hole on the lathe after holding the block, offset to one side, in the four-jaw chuck.

Then moved the chuck over to the rotary table on the mill to shape the outside of the cylinder, and leaving a flange that will meet up with the sliding block made last time. That flange will be used to bolt the two blocks together, then they will be silver soldered into one 'casting'.

The rotary table is SUCH a handy device!

[Kim]

Interesting... I'm not picturing how it all comes together yet, but I'll keep following along and I'm sure it will become clear! Nice work with the RT regardless! 

Kim

[crueby]

Interesting... I'm not picturing how it all comes together yet, but I'll keep following along and I'm sure it will become clear! Nice work with the RT regardless! 

Kim

Here is where itss all heading, hopefully...

[cnr6400]

  Ah! thanks for the pic! Got it now, how it goes together.