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

Logged in members see NO ADVERTISEMENTS!


Propping a Cox Cox_ba12




Propping a Cox Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» German surrender 76 years ago
by Cribbs74 Today at 5:16 am

» Follow Rusty's Memorial Traveling Engines!
by getback Today at 4:59 am

» Propane Exchange
by Admin Today at 1:54 am

» Right up there with burnt castor oil.
by Admin Yesterday at 9:34 pm

» Cox 049 Tatone muffler
by Scotland421 Yesterday at 1:27 pm

» How does your Garden Grow
by Marleysky Yesterday at 9:31 am

» Bird feeder, new visitor
by Marleysky Yesterday at 8:57 am

» New project... Loop Graupner "Glow"
by getback Yesterday at 7:38 am

» Happy birthday Bernie
by KariFS Yesterday at 6:04 am

» Cox .020 Skycopter fuel tank replacement
by getback Yesterday at 5:47 am

» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (May 2021)
by MauricioB Thu May 06, 2021 11:58 pm

» Iced Tea Help Please......
by rsv1cox Thu May 06, 2021 7:30 pm

Cox Engine of The Month
April-2021
fredvon4's

Finely polished Cox .049 with exhaust collector.




PAST WINNERS
CEF Traveling Engine

Win This Engine!
Forum Store
CEF Ear Savers
Gallery


Propping a Cox Empty

Propping a Cox

Go down

Propping a Cox Empty Propping a Cox

Post  daddyo Sun May 24, 2020 2:32 am

Here’s a thread devoted to those who have spent uncounted minutes trying to start one of these tiny motors.  Post your ridiculously long videos of you trying to start these little demons, and maybe with some feedback from others you will have better success the next time around.  Criticism is required!

Starting it off is my latest attempt, at zero to 9 1/2 minutes to ignition:
https://youtu.be/0WppKPkaqok
daddyo
daddyo
Gold Member
Gold Member

Posts : 139
Join date : 2012-11-26
Age : 53
Location : California

Back to top Go down

Propping a Cox Empty Re: Propping a Cox

Post  Surfer_kris Sun May 24, 2020 4:15 am

Wow, that was a long video...

A few tricks to try next time:
- prime the side of the piston with the cylinder port closed (this prevents overpriming of the engine)
- the spring starter should only be rewound about 1/2 turn. This stops you from going through TDC and firing off the priming prematurely. Plus it also saves the starter spring from deforming and hitting the prop once the engine is running.

Once you get a hang of it, it really shouldn't be any problem at all to start an engine. Smile
Surfer_kris
Surfer_kris
Diamond Member
Diamond Member

Posts : 1773
Join date : 2010-11-20
Location : Sweden

Back to top Go down

Propping a Cox Empty Re: Propping a Cox

Post  getback Sun May 24, 2020 7:07 am

I thought this was going to bee about the right prop for the right plane or something BUT i will play along >> I had never ran this engine and was beeing a pain holding the camera too  OK .049A <<  Then the Cox Monster   the end .. On you engine i would rebuild it and check /replace the gaskets /venture O-ring and possibly a new glow , after it started and removed the igniter RPMs went down and had erratic run also . Memorial Day
getback
getback
Top Poster
Top Poster

2019 Supporter

2020 Supporter

Posts : 7770
Join date : 2013-01-18
Age : 63
Location : julian , NC

Back to top Go down

Propping a Cox Empty Re: Propping a Cox

Post  balogh Sun May 24, 2020 9:45 am

Eric, I could doctor the erratic run of my old red postage backplate reedies by replacing the hardened spraybar seal with a new one bought from Bernie, and adding a tight silicon tube and washer to the NV..since then these engines run like Schaffhausen clockwork Very Happy

Propping a Cox 20200510


Refer to the amok run my Quickie100 performed on my video with such a red postage bacplate beast in its nose.. Flying
balogh
balogh
Top Poster
Top Poster

2019 Supporter

2020 Supporter

Posts : 3373
Join date : 2011-11-06
Age : 62
Location : Budapest Hungary

Back to top Go down

Propping a Cox Empty Re: Propping a Cox

Post  daddyo Mon May 25, 2020 12:30 am

On your first video getback I can't believe you didn't try re-priming or clearing as well as hand propped that motor up.  I've a bit to learn.  Thanks for the tips Kris.

The fuel I used was about 15 years old, maybe it's time I got myself a new bottle.
daddyo
daddyo
Gold Member
Gold Member

Posts : 139
Join date : 2012-11-26
Age : 53
Location : California

Back to top Go down

Propping a Cox Empty Re: Propping a Cox

Post  getback Mon May 25, 2020 7:22 am

Like i said i had never ran this engine , I picked it from a pile . It was only for an experiment with the mount that Jason had 3D printed ... I know it needs work and Thanks for the advice , right now its still apart on the bench were i took the mount off because of a break from tring to change the glow plug out . Yes the seal at the needle needs replacing , i have those . I got the engine flooded and its a real PIA to try and work with it with one hand and video too . So that's my excuse and i am sticking to it lol!
getback
getback
Top Poster
Top Poster

2019 Supporter

2020 Supporter

Posts : 7770
Join date : 2013-01-18
Age : 63
Location : julian , NC

Back to top Go down

Propping a Cox Empty Re: Propping a Cox

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top


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