Author Topic: 1st I.C. build "Tiny"  (Read 43949 times)

Online steamer

  • Global Moderator
  • Full Member
  • *****
  • Posts: 9357
  • Central Massachusetts, USA
Re: 1st I.C. build "Tiny"
« Reply #345 on: October 18, 2017, 11:30:20 AM »
Looking good Bob!
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline 90LX_Notch

  • Full Member
  • ****
  • Posts: 1343
  • North Eastern Pennsylvania USA
    • YouTube Channel
Re: 1st I.C. build "Tiny"
« Reply #346 on: October 29, 2017, 03:16:54 PM »
Thanks Dave.

Update:  Bill was nice enough to lend me the necessary gear cutters for this project.  I finished up the arbor for the cutters last night.  The plan was to make the gears this weekend; but prepping for this weekend's rain event killed shop time.  Also, I have to work the next three Sundays.  Sunday is always my most productive shop day and they have me working 2:00-7:00.


-Bob
Proud Member of MEM

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

Online b.lindsey

  • Global Moderator
  • Full Member
  • *****
  • Posts: 12367
  • Dallas, NC, USA
    • Workbench-Miniatures
Re: 1st I.C. build "Tiny"
« Reply #347 on: October 29, 2017, 03:20:29 PM »
Bummer on the work schedule Bob, but it's nice to be needed too. Hope the rain misses you!!

Bill

Offline 90LX_Notch

  • Full Member
  • ****
  • Posts: 1343
  • North Eastern Pennsylvania USA
    • YouTube Channel
Re: 1st I.C. build "Tiny"
« Reply #348 on: November 05, 2017, 05:54:18 PM »
So after getting through last week's rain event I managed to steal some shop time this busy weekend.

I finally have a gear.  I did goof one Friday night on the start of the last series of indexes thus wiping out one complete tooth.  I made another blank yesterday and successfully cut my first gear this morning.



Here is a little tip that some may not know:

Since the gear blank was reamed for a tight fit, and it needed a threaded cross hole, I did not want to leave a burr on the bore of the gear blank.  A tight fitting plug was turned from aluminum and inserted into the bore of the gear blank.  The required tap hole was then drilled and tapped.  The plug was then removed leaving nearly a burr free hole.  The picture shows the cross hole, as drilled and tapped, without any kind of deburring.


-Bob
Proud Member of MEM

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

Online b.lindsey

  • Global Moderator
  • Full Member
  • *****
  • Posts: 12367
  • Dallas, NC, USA
    • Workbench-Miniatures
Re: 1st I.C. build "Tiny"
« Reply #349 on: November 05, 2017, 06:05:33 PM »
Good to see some progress Bob. You should be getting close now!!

Bill

Offline 90LX_Notch

  • Full Member
  • ****
  • Posts: 1343
  • North Eastern Pennsylvania USA
    • YouTube Channel
Re: 1st I.C. build "Tiny"
« Reply #350 on: November 05, 2017, 06:23:45 PM »
I'm shooting for next weekend Bill.  Hopefully, I can get the next gear and cam cut during the week.  That is the "biggie" of the remaining stuff. My wife got me the ignition for my birthday, so it is just finishing off some of the small misc. stuff like the fuel line and set screws for the flywheels, etc.  Unfortunately, working these few Sundays, I will have lost 15 potential shop hours.  In my world that is like losing 15 years!  I am heading out for work in the next couple of minutes.

-Bob
Proud Member of MEM

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

Offline rudydubya

  • Full Member
  • ****
  • Posts: 270
  • Western Arkansas USA
Re: 1st I.C. build "Tiny"
« Reply #351 on: November 05, 2017, 08:59:45 PM »
Nice job on the gear, Bob.  Still following along.  If you took any pictures of the arbor you made for the cutters, I would be interested in seeing how you made it.

Regards,
Rudy

Offline gbritnell

  • Full Member
  • ****
  • Posts: 1806
Re: 1st I.C. build "Tiny"
« Reply #352 on: November 05, 2017, 11:45:08 PM »
Every piece gets closer to completion Bob. I'm still following along.
gbritnell
Talent unshared is talent wasted.

Offline 90LX_Notch

  • Full Member
  • ****
  • Posts: 1343
  • North Eastern Pennsylvania USA
    • YouTube Channel
Re: 1st I.C. build "Tiny"
« Reply #353 on: November 06, 2017, 01:36:09 AM »
Thanks for still following along Rudy and George.  I can't believe that I am closing in on the end.

Rudy, I'll take some pictures tomorrow and post them here for you.  It is nothing complicated.

-Bob
Proud Member of MEM

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

Offline Don1966

  • Full Member
  • *****
  • Posts: 5770
  • Morgan City, LA (Along the Gulf Coast)
Re: 1st I.C. build "Tiny"
« Reply #354 on: November 06, 2017, 05:05:45 PM »
Havenít been saying much lately Bob but still with you bud. Every piece looks great no matter how long it takes itís the end results that count.... :ThumbsUp:

 :cheers:
Don

Offline 90LX_Notch

  • Full Member
  • ****
  • Posts: 1343
  • North Eastern Pennsylvania USA
    • YouTube Channel
Re: 1st I.C. build "Tiny"
« Reply #355 on: November 06, 2017, 10:57:05 PM »
Thanks for staying with me Don.


Rudy the arbor is made from .500 diameter rod salvaged from a printer with a 1.000 diameter piece of scrap pressed onto it.  A set screw was also user to ensure that the 1.000 diameter could not slip on the .500 shank.  An .875 shoulder was turned for the thickness of the cutters plus an additional .020 for the cap to locate on.  A 1/8 x 3/4 Woodruff key seat was cut and the appropriate key was installed to drive the cutter.  A straight key could also be used.  I kept the drive part of the key small, so that it would shear if anything went wrong since I borrowed the cutters from Bill. The Allan head screw is 10-32.  If anything is unclear, feel free to ask questions.

-Bob
Proud Member of MEM

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

Online b.lindsey

  • Global Moderator
  • Full Member
  • *****
  • Posts: 12367
  • Dallas, NC, USA
    • Workbench-Miniatures
Re: 1st I.C. build "Tiny"
« Reply #356 on: November 06, 2017, 11:43:00 PM »
Nice job on the arbor Bob. Thanks for the pictures of it.

Bill

Offline rudydubya

  • Full Member
  • ****
  • Posts: 270
  • Western Arkansas USA
Re: 1st I.C. build "Tiny"
« Reply #357 on: November 07, 2017, 07:50:11 AM »
Thanks for the excellent pictures and clear explanation of the arbor, Bob.  Much appreciated.  I've got a couple of arbors on my to-do list, I'll bookmark yours for reference.

Regards,
Rudy

Offline 90LX_Notch

  • Full Member
  • ****
  • Posts: 1343
  • North Eastern Pennsylvania USA
    • YouTube Channel
Re: 1st I.C. build "Tiny"
« Reply #358 on: November 11, 2017, 07:00:21 PM »
Gald that it is of help Rudy.

-Bob
Proud Member of MEM

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

Offline 90LX_Notch

  • Full Member
  • ****
  • Posts: 1343
  • North Eastern Pennsylvania USA
    • YouTube Channel
Re: 1st I.C. build "Tiny"
« Reply #359 on: November 11, 2017, 07:17:38 PM »
Absolutely No Joy this weekend!


Well, in a brain fart moment, I wasted a couple of hours of work on the Cam and Gear blank.  During the week I did a little here and there on the blank getting ready for today.  After figuring it all out, I started cutting the cam today.  Everything was going well and then it happened.... Scrapped blank, trashed endmill, etc.  Now I have to go over the mill. The 3/4" material was ripped out the 5C collet in the Spin Index.  I'm sure it is out of tram; I just hope nothing else got tweeked.

It's funny.  I don't think I lost one part during this build up until the gear mishap last week and now this.  As they say, "It is what it is."  I'll regroup and get back on it.  For now, I think that I'll pickoff all of the loose ends and try for the cam/gear again next weekend.


-Bob
Proud Member of MEM

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