Author Topic: GDB Inline 4 Cylinder OHV I.C.  (Read 4277 times)

Offline Art K

  • Full Member
  • ****
  • Posts: 1007
  • Madison, Wisconsin USA
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #45 on: September 18, 2018, 12:12:14 AM »
Bob,
I started taking Wal-itin by my doctors recomendation it's Walgreen's generic version. Other wise I'd be blowing my nose all summer, oh yeah and sneezing to.
Art
"The beautiful thing about learning is that no one can take it away from you" B.B. King

Offline 90LX_Notch

  • Full Member
  • ****
  • Posts: 1361
  • North Eastern Pennsylvania USA
    • YouTube Channel
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #46 on: September 24, 2018, 12:16:11 AM »

Block continued-

The cam tunnel calls for a .312 diameter hole, 4.523 deep.  In order to get good geometry, the engine block was setup on an angle plate on the faceplate of the Rivett.  A toolmaker's button was used to locate the center point of the block.  As of right now, I am about halfway through the block with a .250 pilot hole.  It is taking an extremely long time to drill the pilot because the lathe is in backgear and the surface speed is far below what a .250 drill requires.

-Bob
Proud Member of MEM

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

Offline 90LX_Notch

  • Full Member
  • ****
  • Posts: 1361
  • North Eastern Pennsylvania USA
    • YouTube Channel
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #47 on: September 24, 2018, 12:17:17 AM »
Thanks Art for the tip.  Unfortunatly, there aren't any Walgreen's near me.

-Bob
Proud Member of MEM

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

Offline b.lindsey

  • Global Moderator
  • Full Member
  • *****
  • Posts: 12874
  • Dallas, NC, USA
    • Workbench-Miniatures
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #48 on: September 24, 2018, 12:56:31 AM »
That's quite a set up Bob!! Hope the allergies are better now.

Bill

Offline 90LX_Notch

  • Full Member
  • ****
  • Posts: 1361
  • North Eastern Pennsylvania USA
    • YouTube Channel
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #49 on: September 25, 2018, 12:16:28 AM »
Thanks Bill.  My allergies were bad Friday and Saturday.  They were good yesterday.  I should have quit while I was ahead though.  I had a little mishap with the block. The boring bar rubbed and the block shifted on the angle plate.  I believe it is recoverable.  I just have to add an extra step to the plan that I had in mind.

-Bob
Proud Member of MEM

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

Offline gldavison

  • Full Member
  • ****
  • Posts: 124
  • Tarkio, Mo.
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #50 on: September 28, 2018, 04:20:12 PM »
Hi Bob

 Just caught up on this build. Excellent work so far. I'll be following along. Did George have a build thread on this engine? I need a project for this winter, and this looks like a good one. So I need plans.

Gary

Offline gbritnell

  • Full Member
  • ****
  • Posts: 1866
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #51 on: September 28, 2018, 07:03:37 PM »
HI Garry,
There is no build thread as it was made long before I had a computer or digital camera. I do have the drawings. Send me a personal email and I'll give you the particulars.
gbritnell
Talent unshared is talent wasted.

Offline 90LX_Notch

  • Full Member
  • ****
  • Posts: 1361
  • North Eastern Pennsylvania USA
    • YouTube Channel
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #52 on: September 30, 2018, 11:42:29 PM »
Thanks for following along Gary.

It will be nice if you pursue this engine also.  If we can get a third person (come on Bill), it will be the "Tiny" builds of a couple of years ago all over again.

-Bob
Proud Member of MEM

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

Offline 90LX_Notch

  • Full Member
  • ****
  • Posts: 1361
  • North Eastern Pennsylvania USA
    • YouTube Channel
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #53 on: September 30, 2018, 11:43:50 PM »
Unfortunately, I couldn't squeeze in any shop time this weekend.

-Bob
Proud Member of MEM

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

Offline 90LX_Notch

  • Full Member
  • ****
  • Posts: 1361
  • North Eastern Pennsylvania USA
    • YouTube Channel
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #54 on: November 26, 2018, 03:06:17 AM »
Well, it has been close to two months since I last posted in this thread.  Life has gotten in the way of any shop time.  However, I was able to get in the shop today and made a .250 diameter by six inch long boring bar.  The bar uses #44 (.086) drill rod as an insert tool bit.  I proofed it on a piece of 7075 aluminum using the above setup (faceplate and angle plate) and successfully bored a .300 dia, 1.5 inches deep.  Unfortunately, when I went to take a picture, the camera batteries were dead.

Hopefully, I can get more shop time in and start to move forward with this build.  Unfortunately, this winter is already stacking up to be bad.  We had a 10" storm hit us last Thursday and I have been called out several times since, for icey road conditions.

-Bob
Proud Member of MEM

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

Online steamer

  • Global Moderator
  • Full Member
  • *****
  • Posts: 9942
  • Central Massachusetts, USA
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #55 on: November 26, 2018, 11:18:08 AM »
I hear ya buddy!   Stick with it, it'll come back and winter wont last for ever....... 8)

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline 90LX_Notch

  • Full Member
  • ****
  • Posts: 1361
  • North Eastern Pennsylvania USA
    • YouTube Channel
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #56 on: December 16, 2018, 08:16:09 PM »

Thanks for looking in Dave.


Block continued-

As mentioned above, I made up .250 dia boring bar.  It worked well enough to get the job done.  The cam tunnel is now through the block. 

With Cabin Fever fast approching I have decided to put this build on hold (as though I was making any real progress) and try to finish up an engine that I started on years ago.  If I pull that one off in time for CF it will be a pretty neat little engine.

-Bob
Proud Member of MEM

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

Online steamer

  • Global Moderator
  • Full Member
  • *****
  • Posts: 9942
  • Central Massachusetts, USA
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #57 on: December 16, 2018, 10:09:02 PM »
Man I love that lathe......parts look good too!

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline Dave Otto

  • Full Member
  • *****
  • Posts: 3471
  • Boise, Idaho USA
    • Photo Bucket
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #58 on: December 16, 2018, 11:41:36 PM »
Nice work Bob, and yes what Dave said, I sure wouldn't mind having that lathe in my shop.

Dave

Offline b.lindsey

  • Global Moderator
  • Full Member
  • *****
  • Posts: 12874
  • Dallas, NC, USA
    • Workbench-Miniatures
Re: GDB Inline 4 Cylinder OHV I.C.
« Reply #59 on: December 17, 2018, 12:03:36 AM »
Your setups always amaze me too Bob. The block is coming along.

Bill