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

Logged in members see NO ADVERTISEMENTS!


Goo-proofing your Tee Dee 09 Cox_ba12




Goo-proofing your Tee Dee 09 Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Propane Exchange
by Ken Cook Today at 6:07 am

» 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

» 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


Goo-proofing your Tee Dee 09 Empty

Goo-proofing your Tee Dee 09

Go down

Goo-proofing your Tee Dee 09 Empty Goo-proofing your Tee Dee 09

Post  balogh Fri Jan 03, 2020 1:56 pm

My balsa planes are prone to suffer from castor splashed on the fuselage in exhaust gases, polyurethane spray applied on balsa and Oracover notwithstanding..
Worried about castor seep into the balsa cowl of some of my unobtainium classic planes like the Cosmic Wind drove me to goo-proofing the exhaust muffler on the engine.

Goo-proofing your Tee Dee 09 15780810

The muffler in the cylinder neck area is one (1) where castor finds its way flowing down to the engine cowl. Another (2) is the black top ring on the muffler that, if does not contact the bottom cylinder fin with some remnant tension, will give way to castor seeping through the gaps and getting drifted in the air blast by the prop, landing on the fuselage. Third (3) is the muffler outlet that, if not diverted sideways will smear castor on the fuselage.

My solutions to the above:

Ad 1.: place a hight temp O-ring of 16*1.5mm in the cylinder groove below the exhaust port. This will ensure a seal between the cylinder and muffler neck, retaining the castor in the muffler neck thus preventing it  from accumulating in the engine cowl:

Goo-proofing your Tee Dee 09 15780811

Ad 2.: place 1 or 2 high temp O-rings of 19*2mm on the crankcase neck where the muffler sits lose without the rings. The rings will keep the muffler pushed upwards and its top ring will sit on the lowermost cylinder fin tight, improving the seal around both the outer and inner circumference of the ring.

Goo-proofing your Tee Dee 09 15780812

Ad 3. Pull an oversize, 10mm outlet dia silicone exhaust extender on the muffler outlet, diverting the exhaust gases off the fuselage. The muffler body being tapered will not retain the extender unless it is fixed with ziplocks ( or waddayacall this plastic ratchet lock band):

Goo-proofing your Tee Dee 09 15780813

My SPI cylinder performance was only slightly impacted by the muffler addition..it spins the 6.5x5 APC at 16k and 15.7k with and without the muffler respectively. Still enough power to pull the Cosmic Wind with authority.

No disruptive technical  inventions with the above are assumed..only to throw in a topic into the off-season CEF discussions RC Plane Very Happy


Last edited by balogh on Fri Jan 03, 2020 2:30 pm; edited 6 times in total (Reason for editing : Typos corrected)
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

Goo-proofing your Tee Dee 09 Empty Re: Goo-proofing your Tee Dee 09

Post  Levent Suberk Fri Jan 03, 2020 2:09 pm

Very good idea. Thanks for this Very Happy
Levent Suberk
Levent Suberk
Diamond Member
Diamond Member

Posts : 1204
Join date : 2017-12-24
Location : Turkey

Back to top Go down

Goo-proofing your Tee Dee 09 Empty Re: Goo-proofing your Tee Dee 09

Post  balogh Fri Jan 03, 2020 6:11 pm

Thanks Levent, it is freezing here but I will test run it in the garage and check how efficient goo-control it is.
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

Goo-proofing your Tee Dee 09 Empty Re: Goo-proofing your Tee Dee 09

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