Author Topic: GDB Inline 4 Cylinder OHV I.C.  (Read 5368 times)

Offline 90LX_Notch

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #60 on: December 17, 2018, 10:34:42 PM »
Thanks for following along gentlemen.

Dave & Dave, yes, I love that lathe.  It is the crown jewel of my machines.

Bill, the setups aren't really that amazing.  I use to read a lot of old time machinist type stuff.  Those guys had amazing setups.

-Bob
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Offline Art K

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #61 on: December 18, 2018, 03:09:13 AM »
Bob,
Sorry I missed the memo explaining what lathe you have & why everyone is raving about it. :thinking:
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline 90LX_Notch

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #62 on: December 18, 2018, 03:21:41 AM »
If the link works Art, this is when I bought it.  It is a Rivett 608 on the original oak cabinet.

http://www.modelenginemaker.com/index.php/topic,4646.0.html?PHPSESSID=s8nnihdaloa8lt7c8ujqj0cvd1

-Bob
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http://www.youtube.com/user/Notch90usa/videos

Offline 90LX_Notch

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #63 on: April 15, 2019, 12:05:25 AM »
Wow, four months since I lasted worked on this.


Block continued-

A .250 diameter ball endmill was used to rough out the location for the crankshaft.  (The long range plan is to mill the pockets that that will form the webs of block, then install the caps.  The caps and block will then be drilled and bored to the finished diameter.)

The oil holes were drilled and reamed to .0625.  I chose to ream the holes because I can insert dowel pins in them for locational purposes for future setups.

I am currently in the process of drilling and tapping the 2-56 holes for the caps.

-Bob
Proud Member of MEM

My Engine Videos on YouTube-
http://www.youtube.com/user/Notch90usa/videos

Offline Art K

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #64 on: April 15, 2019, 03:16:56 AM »
Bob,
Glad to see you are back at it, more than I can say for myself. Been busy after all.
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline 90LX_Notch

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #65 on: April 22, 2019, 02:24:38 AM »

Thanks Art.  I am glad also.  It is so nice to be making some progress on this engine.


Block continued-

The 2-56 holes for the caps were finished up and the milling of the pockets began.  A .500 drill was used to rapidly remove some of the material.  Next a .500 endmill was used to rough out the pockets.  I currently have one of the pockets roughed out and have begun the second pocket.

-Bob
Proud Member of MEM

My Engine Videos on YouTube-
http://www.youtube.com/user/Notch90usa/videos

Offline b.lindsey

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #66 on: April 22, 2019, 09:55:35 PM »
Good to see you back on this one Bob.

Bill