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Building Tips and technical articles. => 1/2 A building. => Topic started by: Andrew Tinsley on January 25, 2012, 01:28:56 PM

Title: Cox Texaco, how do you recognise one?
Post by: Andrew Tinsley on January 25, 2012, 01:28:56 PM

The heading says it all! Assuming that no one has modified it, how do you recognise the Texaco? I want a lower revving Cox, so that the noise is not quite as bad as the normal 0.49. I expect to use an 8x4 prop. Young grandson seems scared of the higher revs and I would think that it would be a more docile set up.
What is the difference? is it simply a smaller venturi, or is there really no difference except for larger prop giving lower revs?

Regards,

Andrew.

Title: Re: Cox Texaco, how do you recognise one?
Post by: Tim Wescott on January 25, 2012, 01:50:03 PM

I know it has a taller head -- Wikipedia says it has 5 fins, which sounds right.

I'd be astonished if it had a two-bypass cylinder.

I doubt that the venturi was different -- Cox engines respond well to "throttle by propeller": put a honkin' big prop on there and it'll slow down.  It'll just get hot -- which is what the bigger head was all about.

Wikipedia says the tank is red, too, but finding a Cox engine that hasn't been mixed & matched these days is probably a rarity.

If you convert to diesel you can put a really big prop on there and diddle with the compression so it's happy.  It'll run slow and it'll smell better, too.

Title: Re: Cox Texaco, how do you recognise one?
Post by: Paul Smith on January 25, 2012, 01:54:37 PM

Check this link for a pitcher.

http://www.ebay.com/itm/COX-TEXACO-049-MODEL-AIRPLANE-ENGINE-VERY-GOOD-CONDITION-/350508809571

Texaco is a free flight event where were models are supposed to motor around slowly for a long time.  Fuel economy is at a premium.  I doubt if this engine will make you happy in the world of vol circular.

Title: Re: Cox Texaco, how do you recognise one?
Post by: bill bischoff on January 25, 2012, 03:38:59 PM

I believe the intake hole size is in fact smaller on the Texaco, something like 1/16".

Title: Re: Cox Texaco, how do you recognise one?
Post by: Tim Wescott on January 25, 2012, 04:11:12 PM

Quote from: bill bischoff on January 25, 2012, 03:38:59 PM

I believe the intake hole size is in fact smaller on the Texaco, something like 1/16".

1/16" is what size the intake hole is on all my reedies.  I think it's bigger on the black widow, though.

Title: Re: Cox Texaco, how do you recognise one?
Post by: john vlna on January 25, 2012, 05:23:58 PM

There is a good group on yahoo called 049 collectors. Lots of info on these small engines and big knowledge base of the members.

Title: Re: Cox Texaco, how do you recognise one?
Post by: dennis lipsett on January 25, 2012, 07:56:13 PM

Hi Andrew. If you want on I have one plus an extra head.

dennis

Title: Re: Cox Texaco, how do you recognise one?
Post by: Andrew Tinsley on January 27, 2012, 12:38:39 AM

Hi Dennis,
  Sent you a PM.

Andrew.

Title: Re: Cox Texaco, how do you recognise one?
Post by: Andrew Tinsley on January 27, 2012, 08:35:08 AM

Hi Dennis,
My PM bounced back as undeliverable! It would have gone into my junk mail box, which I have only just looked at. The problem is with the email address in your profile, by the look of things.
I will try to find the email address from the last time we talked. By the way, the Gasparin motors are doing fine. I just love the big one!

Regards,

Andrew.

Title: Re: Cox Texaco, how do you recognise one?
Post by: Larry Renger on January 28, 2012, 04:15:29 AM

Black crankcase, red tank, 1/16" Venturi, 5 fin head.  It would be OK for a trainer, bunt would screw the poor kid into the ground with 5 minute flight time!

Title: Re: Cox Texaco, how do you recognise one?
Post by: Andrew Tinsley on January 29, 2012, 09:06:08 AM

Larry,
That one got past me! Think I need to go and lie down in a dark room. I am just not thinking straight these days!

Thanks,

Andrew.

Title: Re: Cox Texaco, how do you recognise one?
Post by: Larry Renger on January 29, 2012, 07:48:42 PM

Cox did make a Jr. Texaco with the small tank.  That might be the ticket, and you don't have to fill it all the way!

Title: Re: Cox Texaco, how do you recognise one?
Post by: Andrew Tinsley on January 30, 2012, 09:53:00 AM

Thanks Larry!
I am still smiling!

Andrew.