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

Logged in members see NO ADVERTISEMENTS!


I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Cox_ba12




I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» #Abortion pills in Dubai#+277-32027887 Abortion pills for sale in Dubai
by kasm Yesterday at 11:51 pm

» Original Box for P-51 Bendix Trophy Racer Value
by Wayne Brown Yesterday at 11:09 pm

» Project Cox .049 r/c & Citabrian Champion
by MauricioB Yesterday at 5:40 pm

» Cox P-51 Bendix Trophy Racer
by Wayne Brown Yesterday at 5:39 pm

» thread measurements
by MauricioB Yesterday at 5:33 pm

» Cox Thompson Trophy Winner
by Jerry Yesterday at 5:20 pm

» COX 010 TeeDee with RC carb, courtesy sosam 117
by rdw777 Yesterday at 3:08 pm

» "Me and Crazy Horse...Our Anniversary"
by fit90 Yesterday at 2:52 pm

» a cheap sport muffler
by robot797 Yesterday at 1:34 pm

» OS 10FSR Carb Needed
by Cougar 429 Yesterday at 1:14 pm

» AP .061 Hornet
by F4D Phantom II Sun Mar 17, 2024 10:01 pm

» dozens of old .049 TeeDee's, Medallions and a few others
by rsv1cox Sun Mar 17, 2024 7:46 pm

Cox Engine of The Month
March-2024
balogh's

"COX Budapest" .049 engine



PAST WINNERS
CEF Traveling Engine

Win This Engine!
Gallery


I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty
Live on Patrol


I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Page 1 of 2 1, 2  Next

Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  coxxoc Fri May 11, 2012 8:23 am

Hi lads,

I just received by post a cox .049 8cc fuel tank (black plastic) and I got
tank front & back, needle valve, plastic tube & spring, reed , retainer, and a free crankcase gasket.
But there was no rubber venturi gasket?..has anyone had the same happen to them?,,,
and are these plastic tanks any good?

P.S. Is the crankcase gasket supposed to be glued on or just placed on? I checked one of
my .020 pee wee`s and it seemed that the crankcase gasket was glued or is that just
what happens to it when engine has been started and it hardens up?

Mr G Flying


Last edited by coxxoc on Fri May 11, 2012 8:30 am; edited 1 time in total
coxxoc
coxxoc
Gold Member
Gold Member

Posts : 115
Join date : 2012-05-03
Age : 62
Location : Australia

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  coxxoc Fri May 11, 2012 8:27 am

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? 41301410I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? 34245810


Last edited by coxxoc on Fri May 11, 2012 8:41 am; edited 1 time in total
coxxoc
coxxoc
Gold Member
Gold Member

Posts : 115
Join date : 2012-05-03
Age : 62
Location : Australia

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  coxxoc Fri May 11, 2012 8:29 am

this is the tank i was talking about?

Mr G Flying


Last edited by coxxoc on Fri May 11, 2012 8:39 am; edited 1 time in total
coxxoc
coxxoc
Gold Member
Gold Member

Posts : 115
Join date : 2012-05-03
Age : 62
Location : Australia

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  SuperDave Fri May 11, 2012 8:38 am

It's a needle valve spring.

A venturi gasket is not part of a tank assembly but a separate item. They need to be replaced occassionally because they do harden. If you want a more resiliant venturi gasket, slice off a small piece of silicone fuel line and make your own as I do.

They are not glued on.


Last edited by SuperDave on Fri May 11, 2012 8:41 am; edited 1 time in total
SuperDave
SuperDave
Rest In Peace
Rest In Peace

Posts : 3552
Join date : 2011-08-13
Location : Washington (state)

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  Kim Fri May 11, 2012 8:39 am

The crankcase gaskets don't use sealant, but often bond themselves to the tank or case due to the heat and compression from tightening the case screws. They can usually be peeled away, using a little heat from a hair dryer and a razor blade. The spring in the photo goes on the needlevalve body, and can be replaced by a #4 washer and a piece of silicon fuel tubing that will help seal the needlevale against air-leaks.
Kim
Kim
Top Poster
Top Poster

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 8501
Join date : 2011-09-06
Location : South East Missouri

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  coxxoc Fri May 11, 2012 8:42 am

yeah I realized that later about the small spring

Mr G
coxxoc
coxxoc
Gold Member
Gold Member

Posts : 115
Join date : 2012-05-03
Age : 62
Location : Australia

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  coxxoc Fri May 11, 2012 8:46 am

How about the plastic tube and spring, I`m having a bit of trouble trying to make it stay at the bottom of tank.
I`m going to use the engine for free flying.

Mr G Flying

coxxoc
coxxoc
Gold Member
Gold Member

Posts : 115
Join date : 2012-05-03
Age : 62
Location : Australia

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  SuperDave Fri May 11, 2012 8:54 am

The tube is the fuel pick-up tube for the NVA. The smaller spring goes within the pick-up tubr to act as a filter.

The tube is either placed at eight o'clock or straight down depending on the type of flying done; CL = 8 o'clock; others, straigt down at 6 o'clock for others where centifugal force is not a consideration.


Last edited by SuperDave on Fri May 11, 2012 8:58 am; edited 1 time in total
SuperDave
SuperDave
Rest In Peace
Rest In Peace

Posts : 3552
Join date : 2011-08-13
Location : Washington (state)

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  Kim Fri May 11, 2012 8:54 am

For Free Light or R/C, the pickup tube needs to go to the bottom of the tank. It has to weave it's way around the Venturi tube and tank screws. I cut mine just long enough that it catches the inside lip of the backplate, and stays there while I push the tank on the assembly.

Rusty has a video on Youtube showing the importance of the tiny fuel tube spring in using capillary action to literally help draw the fuel into the pickup tube, so it's a good idea to make sure and install it.
Kim
Kim
Top Poster
Top Poster

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 8501
Join date : 2011-09-06
Location : South East Missouri

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  coxxoc Fri May 11, 2012 8:56 am

I also received these 3 .049, .051 timimg shims and i noticed one was different...why?

Mr G confused I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? 40932710
coxxoc
coxxoc
Gold Member
Gold Member

Posts : 115
Join date : 2012-05-03
Age : 62
Location : Australia

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  coxxoc Fri May 11, 2012 9:00 am

Should the cut on the bottom of the plastic fuel tube be facing the back of the tank?..and
should the spring poke out a little from the bottom of tube?

Mr G
coxxoc
coxxoc
Gold Member
Gold Member

Posts : 115
Join date : 2012-05-03
Age : 62
Location : Australia

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  SuperDave Fri May 11, 2012 9:01 am

Different how?

Are you sure that one isn't two shims stuck together?
SuperDave
SuperDave
Rest In Peace
Rest In Peace

Posts : 3552
Join date : 2011-08-13
Location : Washington (state)

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  Kim Fri May 11, 2012 9:02 am

You may have a glowhead gasket mixed in with the timing shims...they look very similar. Check to see if it fits nicely into the top of the cylinder...if so, that's where it goes.
Kim
Kim
Top Poster
Top Poster

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 8501
Join date : 2011-09-06
Location : South East Missouri

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  SuperDave Fri May 11, 2012 9:06 am

G'morin Kim!
SuperDave
SuperDave
Rest In Peace
Rest In Peace

Posts : 3552
Join date : 2011-08-13
Location : Washington (state)

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  coxxoc Fri May 11, 2012 9:08 am

No, there are 3 shims, 2 of them were together, I seperated them and they look identical but
the other one seems thinner and I could see what looked like small bluish/green stains on the copper, like when
it oxidizes or something?..like water has got to it.

Mr G
coxxoc
coxxoc
Gold Member
Gold Member

Posts : 115
Join date : 2012-05-03
Age : 62
Location : Australia

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  Kim Fri May 11, 2012 9:12 am

Hey Dave ! I figure the different color IS from age or a bit of oxidation...shouldn't affect it's function...
Kim
Kim
Top Poster
Top Poster

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 8501
Join date : 2011-09-06
Location : South East Missouri

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  coxxoc Fri May 11, 2012 9:14 am

It is considerably thinner than the other 2. wouldn`t that have some effect on the compression?

Mr G
coxxoc
coxxoc
Gold Member
Gold Member

Posts : 115
Join date : 2012-05-03
Age : 62
Location : Australia

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  coxxoc Fri May 11, 2012 9:19 am

I`ve just found out that this item includes TWO 0.010" & ONE 0.015" to Mix/Match if Desired
it`s a new production item.

Mr G Flying
coxxoc
coxxoc
Gold Member
Gold Member

Posts : 115
Join date : 2012-05-03
Age : 62
Location : Australia

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  coxxoc Fri May 11, 2012 9:23 am

But I still think the the 0.015 shim is not right, it`s too thin where it should be slightly thicker?
It must be faulty?

Mr G
coxxoc
coxxoc
Gold Member
Gold Member

Posts : 115
Join date : 2012-05-03
Age : 62
Location : Australia

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  Kim Fri May 11, 2012 9:40 am

Got me...sorta out of my league...maybe some of our Engine Guys will check in shortly...
Kim
Kim
Top Poster
Top Poster

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 8501
Join date : 2011-09-06
Location : South East Missouri

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  microflitedude Fri May 11, 2012 9:43 am

Or the guy you bought them from.... I'm guessing Bernie or Matt.
microflitedude
microflitedude
Top Poster
Top Poster

Posts : 3417
Join date : 2011-08-17
Age : 26
Location : Columbia, SC

https://www.facebook.com/MiniCub?fref=ts

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  SuperDave Fri May 11, 2012 9:51 am

coxxoc wrote:I`ve just found out that this item includes TWO 0.010" & ONE 0.015" to Mix/Match if Desired
it`s a new production item.

Mr G I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? 4201307885

As in so many things, "the devil is in the details". Relax.
SuperDave
SuperDave
Rest In Peace
Rest In Peace

Posts : 3552
Join date : 2011-08-13
Location : Washington (state)

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  Cox International Fri May 11, 2012 9:58 am

In answer to the questions (some of which already have been answered):

The tank assembly includes a venturi gasket and the crankcase gasket is not "free"' it is a part you paid for.

In our case we slip the venturi gasket onto the tank's venturi post.

The crankcase gasket is not glued on.

Email us if you need a picture of how the pick-up line is attached/ laid out. The spring should be completely inserted.

Yes, the tanks are good. The aluminium ones may be better but are also more expensive.

We supply 3 timing shims; 2 each .010" and one of .015". This is so that the modeller has the following shim choices:

.010
.015
.020
.025
.035

Thus maximizing possibilities.

The .015 one was cut from a different sheet of copper that would have sported a bit of oxidation. Fully normal with copper and, no, this would not affect the operation.



Last edited by Cox International on Fri May 11, 2012 10:00 am; edited 1 time in total (Reason for editing : typo)
Cox International
Cox International
Top Poster
Top Poster

Official Cox Dealer
Posts : 3285
Join date : 2011-08-08
Age : 65
Location : Williams Lake, BC, Canada

http://www.coxengines.com

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  SuperDave Fri May 11, 2012 10:08 am

Yea for the "Bernster" who comes through once again!


Last edited by SuperDave on Fri May 11, 2012 10:20 am; edited 1 time in total
SuperDave
SuperDave
Rest In Peace
Rest In Peace

Posts : 3552
Join date : 2011-08-13
Location : Washington (state)

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  Cox International Fri May 11, 2012 10:11 am

If the tank assembly was bought from us and the venturi gasket is truly missing please email nichole@coxengines.ca and she will send you one.
Cox International
Cox International
Top Poster
Top Poster

Official Cox Dealer
Posts : 3285
Join date : 2011-08-08
Age : 65
Location : Williams Lake, BC, Canada

http://www.coxengines.com

Back to top Go down

I just purchased a Cox .049 8cc fuel tank..no venturi gasket?? Empty Re: I just purchased a Cox .049 8cc fuel tank..no venturi gasket??

Post  Sponsored content


Sponsored content


Back to top Go down

Page 1 of 2 1, 2  Next

Back to top

- Similar topics

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