Author Topic: GDB Inline 4 Cylinder OHV I.C.  (Read 6887 times)

Offline 90LX_Notch

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #75 on: May 07, 2019, 01:46:28 AM »
Block continued-

I did manage to get a small amount of shop time this weekend.  I finished roughing the last pocket and proceeded to finish part of the pocket.  The pocket calls for .125R corners; so a .250 end mill was plunged at the correct locations minus .005 to allow for a finish pass.    A .100 step was left on the bottom of the pocket for a .090R fillet that will be milled next.  The pocket should be .720 and and I am at .719 with gauge blocks.  I can definetely live with that.  If I can hold that for the other three pockets I will be very happy.

-Bob
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Offline b.lindsey

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #76 on: May 07, 2019, 01:23:52 PM »
Good to see some progress Bob. Were the gage blocks part of the new acquisition or did you already have them?

Bill

Offline 90LX_Notch

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #77 on: May 07, 2019, 10:01:37 PM »
Bill the gage blocks are part of a set that was included in my recent tool purchase.  They are so nice to have on hand.

-Bob


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Offline b.lindsey

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #78 on: May 08, 2019, 02:05:40 PM »
Thanks Bob, I thought they might have been a part of the tooling acquisition. Have always wondered how much I might use a set of those but don't have any currently.

Bill

Offline 90LX_Notch

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #79 on: May 14, 2019, 12:51:38 AM »
Block continued-

I was able to sneak into the shop this Mother's Day and make some progress.  I used the Zero Setter that I made a couple of years ago and swapped in a .250 endmill that has a .094R.  The Zero Setter allowed me to re-establish 0 in Z after changing tools.  The pocket was then finished to the correct depth and the .094R was machined at the bottom of the pocket.  Both the X and Y coordinates  were milled .001 less than in the previous operation so that finished walls were not touched.

The Zero Setter was used and the tools were then changed and the next pocket was milled leaving a .100 step.  This is the first project I have actually used the Zero Setter on and have to say that I am very pleased with it.  I was able to go to my target depth after a tool swap as though the original tool was still in the machine.

-Bob
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Offline ozzie46

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #80 on: May 14, 2019, 01:33:21 PM »
Did you do a build log on the zero setter? I can't seem to find it.

Ron

Offline Ye-Ole Steam Dude

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #81 on: May 14, 2019, 04:05:23 PM »
Hello Bob,

Some really nice work and the build is looking good.

Have a great day,
Thomas

Offline 90LX_Notch

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #82 on: May 15, 2019, 10:58:01 PM »
Ron-
Thanks for looking in.  I didn't post a build thread for it, just a completed project thread.  It is just two pieces besides the indicator.  A body that was machined for the indicator to slip into and a "pad" to fit over the indicator plunger.  If you have any questions or need any clarification do not hesitate to ask.  The only thing that I found from using it, is that if you rezero the Z dial during use; when you zero the indicator before changing tools you must note what the Z dial reads and set the next tool to that reading during the change.
http://www.modelenginemaker.com/index.php/topic,5824.0.html

Thomas-
Thank you very much for the encouraging words and for checking in.

-Bob
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My Engine Videos on YouTube-
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Offline ozzie46

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Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #83 on: May 16, 2019, 12:47:51 AM »


 Thanks Bob.

Ron