Author Topic: Somebody Stop Me!  (Read 30291 times)

38ac

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Re: Somebody Stop Me!
« Reply #15 on: April 04, 2012, 01:07:02 PM »
Again, nice work!
One nice thing about a Bamfords is you cant spend much money fixing it as there isn't any parts for them available to purchase, LOL.  They do keep a person in pratice on the lathe n mill, :)
Collector and horder of about anything diesel

rleonard

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Re: Somebody Stop Me!
« Reply #16 on: April 04, 2012, 01:38:38 PM »
Bruce, there is a hollow dipper on the rod cap that "rams" oil into the bearing. 

I'll take a picture today in the shop.   Rings are supposed to be here today.  I can drop in the piston!

Bob
Faster - Better - Cheaper  You can have any two, but not all three

Tom

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Re: Somebody Stop Me!
« Reply #17 on: April 04, 2012, 05:41:00 PM »
Gorgeous work Bob. I sure miss not having a machine shop ad my disposal.
Tom
2004 Ashwamegh 6/1 #217 - ST5 just over 3k hours.

BruceM

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Re: Somebody Stop Me!
« Reply #18 on: April 04, 2012, 06:06:05 PM »
Bob- So there is a  channel for oil from the big end to the wrist pin?  Is that cast in place somehow, or drilled?  The Bamfords seem like a step up in engineering from the Lister CS.  Pity they weren't as successful in the marketplace so there would be more around.  I've really enjoyed seeing the photos of these Bamfords, since I'm a low speed fan.





rleonard

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Re: Somebody Stop Me!
« Reply #19 on: April 05, 2012, 04:12:51 AM »
The hollow dipper on the rod that rams oil into the bearing.



Rings here, piston and rod in, back on the base.



Bob
Faster - Better - Cheaper  You can have any two, but not all three

BruceM

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Re: Somebody Stop Me!
« Reply #20 on: April 05, 2012, 06:07:28 AM »
Sorry, Bob. I got confused. Of course your new split bearing is for the crank end. It's great seeing your Bamford going back together.



Apogee

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Re: Somebody Stop Me!
« Reply #21 on: April 05, 2012, 07:00:20 AM »
Ron,

Nice work!

This answered one of my questions regarding rod bearings.  I'd always wondered if I could just machine one out of bronze and run it.  Wasn't sure about trying it as I didn't want to destroy a crank.

Why did the manufacturers use white metal?  Will the bronze hold up fine for the long term under load.  Will it wear the crank more?  What is the downside to running it?

I have several Lister CD's and a CE and need rod bearings.  This could end up being the answer.

What did you set the clearance to?

Please keep the pics and info coming.

Again, beautiful work!

Thanks,

Steve

38ac

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Re: Somebody Stop Me!
« Reply #22 on: April 05, 2012, 12:46:50 PM »
Steve, thanks for asking those questions, they are all on my mind also. Bronze sleeves work well in lots of applications including several places in the Bamfords other than the rod and mains.
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rleonard

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Re: Somebody Stop Me!
« Reply #23 on: April 05, 2012, 01:57:48 PM »
I am glad that you guys appreciate the work.  I'll keep documenting the highlites for you.

Regarding bearing clearance;  Machinest's handbook states that clearance for bronze bearings should be .001/inch of diameter.  I allowed .003. 

Bob
 
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apogee_man

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Re: Somebody Stop Me!
« Reply #24 on: April 06, 2012, 12:00:55 AM »
Hi Bob,

Sorry for calling you Ron in my previous post; I'd always thought the R was for Ron not Robert.  Not sure where I got that, but I apologize...

Do you know the reason for the prevalent use of white metal bearings instead of bronze?  Is it as simple as a cost issue?  The reason that I ask is the the CD and CE bearings are white metal backed by bronze.  I would have thought that Lister would have simply made them entirely from bronze since they were machining them from bronze anyway, so I'm trying to understand the purpose of the white metal.

It's very exciting that I can make them (or have them made) out of bronze.  Will they wear the crank any quicker if the engine is made to really work?

Also, what is the slitting saw that you used look like?  I've never seen one and a pic would be great if you get the chance.

Finally, thanks for the clearance info.

Again, nice work!

Thanks,

Steve

rleonard

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Re: Somebody Stop Me!
« Reply #25 on: April 06, 2012, 02:34:23 AM »
Here is a stack of various saws and the arbor that they are attached to.  Then the assembly goes into the Bridgeport mill.  Saws come in all thicknesses and diameters.  They all require a rigid machine, especially the larger sizes.





I did the valves and got the head on tonight.

Bob

Faster - Better - Cheaper  You can have any two, but not all three

contaucreek

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Re: Somebody Stop Me!
« Reply #26 on: April 06, 2012, 09:01:59 PM »
Looks good Bob
L.E.F. Dip #1 Threadstopper Extraordinaire

rleonard

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Re: Somebody Stop Me!
« Reply #27 on: April 13, 2012, 02:22:51 AM »
Ready for primer, but too cold and windy outside. 



I made up this replacement lower water flange.  The original is made to slip a hose over.  This one will go out to a T where I can attach a drain valve.



Little by little....

Bob
Faster - Better - Cheaper  You can have any two, but not all three

rleonard

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Wearing a fresh coat of primer
« Reply #28 on: April 17, 2012, 02:16:39 AM »
It warmed up, humidity dropped, and the wind died down.  Time for primer!






Bob
« Last Edit: May 05, 2012, 03:42:13 AM by rleonard »
Faster - Better - Cheaper  You can have any two, but not all three

wrightkiller

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Re: Somebody Stop Me!
« Reply #29 on: April 17, 2012, 10:50:00 PM »
I can not wait to hear it running,  looks like it will be soon  ;D ;D