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Post  MauricioB Sun Mar 17, 2024 12:10 am

Friends, can you please send me the link to measure cox engine threads, such as venturis thread, glow plug thread, etc. etc.
I can't find the thread table, thanks in advance!
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Post  davidll1984 Sun Mar 17, 2024 6:30 am

don't know where to find the sheet with the different threads But I believe that for the tee dee .049 tink the ventury is 1\4 32 same thing as a glow plug... But I believe Having the complete list accessible would be practical Thumbs Up
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Post  duaneh Sun Mar 17, 2024 8:17 am

Friends, can you please send me the link to measure cox engine threads, such as venturis thread, glow plug thread, etc. etc.
I can't find the thread table, thanks in advance!

Mauricio, the information you are looking for is on this site.
https://www.mh-aerotools.de/airfoils/cox_frameset.htm

Click on the "Technical Info" button on the left side of the screen.
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Post  davidll1984 Sun Mar 17, 2024 8:51 am

On this link we cannot find the measurements for the tee dee .010 and .020 mising som informations
Also Not sur tink there is an error in the measurement of the tee dee .15 ?
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Post  MauricioB Sun Mar 17, 2024 11:06 pm

Thanks guys!
Yes that is the list I needed, but I think I saw one that was complete.
Brad had posted a link once, but I can't find it, since he needed the venturi thread size of .020 and .010
I wonder if there is an equal and complete list?
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Post  Cox International Mon Mar 18, 2024 4:07 pm

Don't believe that there exists an entire list but we should have (almost) all the specs on file, in case someone needs a measurement.
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Post  MauricioB Mon Mar 18, 2024 5:33 pm

Cox International wrote:Don't believe that there exists an entire list but we should have (almost) all the specs on file, in case someone needs a measurement.

ohhh friends here I found the thread in question and the data of the .020 venturi thread.
On that occasion Matt responded! and solve the problem.
(The published table does not have that information)
Here is the link:
https://www.coxengineforum.com/t10561-venturi-thread-tee-dee-020?highlight=venturi+thread+measurement

Mr. Bernie, then I would need to know the thread of:
Cox.010 Venturi?
Glow plug .010 thread?
.010 cylinder thread?
.010 crankshaft thread?
Thank you so much!!






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Post  Cox International Tue Mar 19, 2024 11:16 am

Cox.010 Venturi?
1/8 - 40

Glow head .010 thread?
3281-56

.010 cylinder thread?
same as glow head

.010 crankshaft thread?
Crankshafts don't have threads
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Post  Admin Tue Mar 19, 2024 11:31 am

Cox International wrote:
.010 crankshaft thread?
Crankshafts don't have threads

Perhaps he's looking for the prop screw or collet?

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Post  roddie Tue Mar 19, 2024 11:34 am

Admin wrote:
Cox International wrote:
.010 crankshaft thread?
Crankshafts don't have threads

Perhaps he's looking for the prop screw or collet?

The prop-screw for Cox TD .010 is a 2-56 X 5/8" according to the MH Aerotools (Martin Hepperle) webpage.
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Post  Cox International Tue Mar 19, 2024 11:35 am

Admin wrote:
Cox International wrote:
.010 crankshaft thread?
Crankshafts don't have threads

Perhaps he's looking for the prop screw or collet?

Prop screw: https://coxengines.ca/cox-010/cox--010-propeller-screw-4.html
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Post  roddie Tue Mar 19, 2024 12:10 pm

Cox International wrote:Cox.010 Venturi?
1/8 - 40

Glow head .010 thread?
3281-56

.010 cylinder thread?
same as glow head

.010 crankshaft thread?
Crankshafts don't have threads

Hi Bernie, Would your 1/8 - 40 answer for the venturi thread be the same thread as the 5-40 thread used on the .049/.051 crankshaft threads? It would be easy enough to check with a .049/.051 prop-screw.

Regarding your 3281-56 answer for the cylinder/glowhead threads.. Are you meaning .3281" (decimal; taken to the ten-thousandths place) diameter? This would be 21/64" if converted to fractional.

I never owned a TD .010.. but is there a backplate/thread?


thread measurements Tee_de13
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Post  Cox International Tue Mar 19, 2024 12:16 pm

roddie wrote:
Cox International wrote:Cox.010 Venturi?
1/8 - 40

Glow head .010 thread?
3281-56

.010 cylinder thread?
same as glow head

.010 crankshaft thread?
Crankshafts don't have threads

Hi Bernie, Would your 1/8 - 40 answer for the venturi thread be the same thread as the 5-40 thread used on the .049/.051 crankshaft threads? It would be easy enough to check with a .049/.051 prop-screw.

Regarding your 3281-56 answer for the cylinder/glowhead threads.. Are you meaning .3281" (decimal; taken to the ten-thousandths place) diameter? This would be 21/64" if converted to fractional.

I never owned a TD .010.. but is there a backplate/thread?


thread measurements Tee_de13

The 5-40 seems to screw into the carb body correctly.

3281: Not the foggiest idea, sorry. The measurements were taken from the drawing.

These are the crankcase screws: https://coxengines.ca/cox-010/cox--010-020-backplate-fuel-tank-1-4-screw-4.html



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Post  MauricioB Tue Mar 19, 2024 12:20 pm

Thanks Mr. Bernie for the information!
Thank you all for collaborating.

Yes, as Jacob says, propeller screw measurement = crankshaft thread measurement (only front thread that the crankshaft has)

....I'll tell you a secret hehe...a friend sent me a Cox Tee Dee .010, he thinks I'm going to take very good care of it, he bought that engine a few years ago, he used it and now he wants it I keep it, so I am waiting for it.
In the meantime and to save time, I wanted to know the thread measurements in case there is something to reset.
In Argentina it is difficult to find equivalent tools, sometimes some appear, other times you have to adapt.
I'll show you the engine as soon as it arrives.

So: with this data, is there any possibility of adding it to the digital table that appears on the web?

Thanks guys, I'm keeping an eye on this thread, all information is very important and safe to avoid damaging priceless pieces!
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Post  MauricioB Tue Mar 19, 2024 12:26 pm

So to complete, the thread measurement of the nut that threads into the crankcase and tightens the crankcase body would be missing.
Extent?? Thank you!!
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Post  Cox International Tue Mar 19, 2024 12:40 pm

.250-40

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Post  MauricioB Tue Mar 19, 2024 1:40 pm

Cox International wrote:.250-40

Sr. Bernie...
Thank you!
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Post  MauricioB Fri Mar 22, 2024 10:59 am

MauricioB wrote:Thanks Mr. Bernie for the information!
Thank you all for collaborating.

Yes, as Jacob says, propeller screw measurement = crankshaft thread measurement (only front thread that the crankshaft has)

....I'll tell you a secret hehe...a friend sent me a Cox Tee Dee .010, he thinks I'm going to take very good care of it, he bought that engine a few years ago, he used it and now he wants it I keep it, so I am waiting for it.
In the meantime and to save time, I wanted to know the thread measurements in case there is something to reset.
In Argentina it is difficult to find equivalent tools, sometimes some appear, other times you have to adapt.
I'll show you the engine as soon as it arrives.

So: with this data, is there any possibility of adding it to the digital table that appears on the web?

Thanks guys, I'm keeping an eye on this thread, all information is very important and safe to avoid damaging priceless pieces!

New gift from my friend: Cox .010 here:
https://www.coxengineforum.com/t18134-my-friend-ramon-his-cox-09-cox-010#232461
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