Cox Engines Forum
You are not logged in! Please login or register.

Logged in members see NO ADVERTISEMENTS!


Small Hole on LH Side of Cox .049 Case Cox_ba12




Cox Engines Forum

The official forum for 24/7 Cox Engines and Model Discussion! Ask Questions, Answer Questions, Discuss Cox engines, Cox products, anything CL, FF, RC, 1/2A, and more! Although memberships are encouraged, guests are always welcome!

Small Hole on LH Side of Cox .049 Case Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 

Rechercher Advanced Search

Latest topics
» My latest doodle...
by batjac Today at 10:05 pm

» Retail price mark-up.. how much is enough?
by gkamysz Today at 9:29 pm

» Happy 77th birthday Andrew!
by roddie Today at 9:22 pm

» Roger Harris revisited
by rsv1cox Today at 3:38 pm

» My N-1R build log
by GallopingGhostler Today at 3:04 pm

» Tee Dee .020 combat model
by 1/2A Nut Today at 2:43 pm

» Chocolate chip cookie dough.........
by roddie Today at 1:13 pm

» Purchased the last of any bult engines from Ken Enya
by sosam117 Today at 11:32 am

» Free Flight Radio Assist
by rdw777 Today at 9:24 am

» Funny what you find when you go looking
by rsv1cox Wed Nov 20, 2024 3:21 pm

» Landing-gear tips
by 1975 control line guy Wed Nov 20, 2024 8:17 am

» Cox NaBOO - Just in time for Halloween
by rsv1cox Tue Nov 19, 2024 6:35 pm

Info
Cox Engine of The Month
November-2024
Kim's

"A Space Bug Jr. pulls the Q-Tee up high over Sky Tiger Field"

PAST WINNERS
CEF Traveling Engine
Win This Engine!
Gallery


Small Hole on LH Side of Cox .049 Case Empty
Live on Patrol


Small Hole on LH Side of Cox .049 Case

Cox Engines Forum  :: Engines :: Cox Engines

Go down

Small Hole on LH Side of Cox .049 Case Empty Small Hole on LH Side of Cox .049 Case

Post  Iceberg Tue Feb 26, 2019 8:06 pm

I have two crankcases that have a small maybe about 1mm or about 1/25th of an inch hole drilled in them on the LH web of the crankcase in the center. What was that for? Why did Cox drill those holes? For throttle or something?

Thanks
Iceberg
Iceberg
Iceberg
Gold Member
Gold Member

Posts : 382
Join date : 2018-11-03
Location : Suva Fiji Islands

Back to top Go down

Small Hole on LH Side of Cox .049 Case Empty Re: Small Hole on LH Side of Cox .049 Case

Post  NEW222 Tue Feb 26, 2019 8:23 pm

Without pictures, as well as NOT being an expert, I will guess that someone was trying or going to try to pressurize it? The above guess would only be if you got these engines used, cause if you owned them since new, you would know if you drilled them or not...
NEW222
NEW222
Top Poster
Top Poster

Posts : 3896
Join date : 2011-08-13
Age : 46
Location : oakbank, mb

Back to top Go down

Small Hole on LH Side of Cox .049 Case Empty Re: Small Hole on LH Side of Cox .049 Case

Post  Iceberg Tue Feb 26, 2019 8:28 pm

It's not through the crankcase only through the machined ear of it. Exactly in the center and aligned. Appears factory done? Diameter large enough for a wire hook to go through. Spent the mustang planes have a deflector shield or something? Just curious. Motor runs super. Just wonder why the holes? Supplied from different places and times. Not same person.

Thanks
Ice
Iceberg
Iceberg
Gold Member
Gold Member

Posts : 382
Join date : 2018-11-03
Location : Suva Fiji Islands

Back to top Go down

Small Hole on LH Side of Cox .049 Case Empty Re: Small Hole on LH Side of Cox .049 Case

Post  NEW222 Tue Feb 26, 2019 8:35 pm

Ok. I do believe that I know exactly what you are talking about. Someone here more knowledgable will chime in I hope to tell you. I do remember seeing and reading about it, or something similar before, but cannot remember what it was from.
NEW222
NEW222
Top Poster
Top Poster

Posts : 3896
Join date : 2011-08-13
Age : 46
Location : oakbank, mb

Back to top Go down

Small Hole on LH Side of Cox .049 Case Empty Re: Small Hole on LH Side of Cox .049 Case

Post  Admin Tue Feb 26, 2019 8:45 pm

The hole is for a throttle spring, used on the Miss America plane. I have one of those crankcases with the spring still attached.

_________________
-Jacob


Admin
Admin
Administrator

Posts : 6564
Join date : 2010-07-27
Location : Roseville, Minnesota

http://sites.google.com/site/coxenginecollection/

Back to top Go down

Small Hole on LH Side of Cox .049 Case Empty Re: Small Hole on LH Side of Cox .049 Case

Post  batjac Tue Feb 26, 2019 8:50 pm

If it's what I think it is, it's a spring hole for the throttle ring on a throttle equipped .049 engine.  I'll see if I can dig up a picture, but I had one of the cases once, and I can't find it anymore.  I think I gave it away on a trainer to a guy at work.

The Searching Mark

edit:
Here's a picture:

Small Hole on LH Side of Cox .049 Case 574
batjac
batjac
Diamond Member
Diamond Member

2022 Supporter

2023 Supporter

Posts : 2375
Join date : 2013-05-22
Age : 61
Location : Broken Arrow, OK, USA

Back to top Go down

Small Hole on LH Side of Cox .049 Case Empty Re: Small Hole on LH Side of Cox .049 Case

Post  NEW222 Tue Feb 26, 2019 9:52 pm

Well, thanks guys for helping him out. I was even starting to second guess myself..... Very Happy
NEW222
NEW222
Top Poster
Top Poster

Posts : 3896
Join date : 2011-08-13
Age : 46
Location : oakbank, mb

Back to top Go down

Small Hole on LH Side of Cox .049 Case Empty Re: Small Hole on LH Side of Cox .049 Case

Post  Iceberg Tue Feb 26, 2019 10:37 pm

Hi Guys
Yes that is what I thought. Although the position of the hole on both of my blocks that have the holes are in the very center of the block casting. Not to the front 1/3 as in the picture. However I think you're right it was to fix a throttle spring similar to what was illustrated in the picture.
Thanks!!
Ice
Iceberg
Iceberg
Gold Member
Gold Member

Posts : 382
Join date : 2018-11-03
Location : Suva Fiji Islands

Back to top Go down

Small Hole on LH Side of Cox .049 Case Empty Re: Small Hole on LH Side of Cox .049 Case

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top

Cox Engines Forum  :: Engines :: Cox Engines

 
Permissions in this forum:
You cannot reply to topics in this forum