[SEL] Fwd: Crosshead Problems

[Rupert]

	My guess is they placed a machined cast iron core (for the shaft) in 
place in the mold prior to closing the mold and then pouring the rest of 
the casting. The core would have to be hot when placed in the mold and 
the pour done before the core had time to cool down. All that would be 
needed to do after the pour is polish the shaft if the molding and 
casting process was done carefully.
	I've used steel cores for a similar purpose but the casting I poured 
was aluminum.

Rupert

On 2/20/2011 9:35 AM, Arnie Fero wrote:
> Folks,  Dolly also has a FaceBook thread going on this topic if you're on FaceBook.
>
> --------------------------------- Original Message ---------------------------------
> Subject: Fwd: Crosshead Problems
> From:    "Jim French"<french.bros at virgin.net>
> Date:    Sun, February 20, 2011 10:00 am
> To:      "Arnie Fero"<fero_ah at city-net.com>
> ------------------------------------------------------------------------------------
>
> Hi Arnie
>
> Can you do me a favour and post this to the ATIS list?  I've tried a
> couple of times and it doesn't appear.
>
> Thanks,
> Dolly
>
> -------- Original Message --------
> Subject: 	Crosshead Problems
> Date: 	Sat, 19 Feb 2011 20:54:23 +0000
> From: 	Jim French<fbi at insulate.co.uk>
> Organisation: 	French Brothers Insulation
> To: 	ATIS Stationary Engine List<sel at lists.stationary-engine.com>
>
> Hi Folks
>
> Remember Tillie, the half-breed oilfield engine I bought for Jim's 40th
> birthday?  Well, guess what?  That was 10 years ago!  Now we're hoping
> to take her to Nuenen this year, but a problem has arisen.
> When we got Tillie, the babbitt on the crosshead was thin and worn, so
> going to Nuenen has inspired Jim to re-do the babbitt.  Today, he
> stripped the crosshead down but when he started warming everything up,
> degreasing and drying it out before attempting pouring the molten
> babbitt, he spotted a tiny line of oil coming out of the main bearing as
> it warmed up, so the project has been halted.  What now?  Before going
> any further, advice and suggestions will be most welcome.
> And, just out of curiousity, how was this bearing machined when new,
> because it can't be rotated and it appears to be one single casting?
> Anyway, please take a look at the pictures
> http://www.oldengine.org/members/dolly/crosshead.htm
> Thanks for all and any input!
>
> Jim&   Dolly
>
>
>
>
> _______________________________________________
> SEL mailing list
> SEL at lists.stationary-engine.com
> http://www.stationary-engine.com/mailman/listinfo/sel

-- 

yvt

Rupert Wenig
Camrose, Alberta, Canada.	

email: rwenig2 at xplornet.com
	
http://users.xplornet.com/~rwenig/Home/