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"Cox Tee Dee .010"



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SPACE BUG Jr. (gosh) TEST RUN

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Happy SPACE BUG Jr. (gosh) TEST RUN

Post  getback on Tue Jul 07, 2015 12:03 pm

I ran this the first time I have ever she is strong and has good compression ,, easy to start very clean responsive needling no pic sorry and my tach is crap sooooooooo here is the victim       I really enjoyed running this engine and want to put it to the air where it belongs , what's a good plane for it or just a good old prop rod ?? O MAN THANKS THATS WHY I POST IN THE MORNINGS Embarassed Embarassed


Last edited by getback on Thu Aug 27, 2015 11:36 pm; edited 2 times in total (Reason for editing : WRONG TITLE, title update)
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  Jason_WI on Sat Jul 11, 2015 8:13 am

I think that's a Spacebug Jr.
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  cox24711 on Sat Jul 11, 2015 12:27 pm

Jason_WI wrote:I think that's a Spacebug Jr.
it is a space bug jr and i think you have a rare on with the white tank assembly ps the yellow ones are the most common .dose it have a pre 55 head on it ? or is it a later nomal style thred

thanks
Greg Smile
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  gossie on Sat Jul 11, 2015 12:56 pm

cox24711 wrote:
Jason_WI wrote:I think that's a Spacebug Jr.
it is a space bug jr and i think you have a rare on with the white tank assembly  ps the yellow ones are the most common .dose it have a pre 55 head on it ? or is it a later nomal style thred

thanks
Greg Smile

Please tell me about both heads on these things????? Pics perhaps?????

How do you tell in pics just what it what? I've been keen to buy one for years as I have plenty of .049 reed heads and .049/.051 Tee Dee heads, and I would hate to purchase an early one with a blown head or blow the head myself using it.
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  cox24711 on Sat Jul 11, 2015 2:09 pm

#302 Pre 1955 Standard Head - Hemispherical shape - Low Compression - Smaller dia. threads - used on Space Bug, Thermal Hopper, Space Bug Jnr and Strato Bug Only.[24]

#302-1 Post 1955 Standard Head - Hemispherical shape - Low Compression - Larger dia. threads - used on all engines produced post 1955 until the #325 head was produced in 1979.[25]

#325 Standard Head - Hemispherical shape - Low Compression - Larger dia. threads - used on all post 1956 engines except Tee Dees, QZ, Killer Bees, Venom and Texaco. Replaced 302-1 head in 1979.
there are several different exterior appearances to standard glow heads, all noting a slightly different internal shape, compression and glow coil heat. [26]

#1702 Hi Compression Head - Trumpet shaped - High Compression - knurled top - 4 fins on early, 3 fins on later (fastest), 2 fins on most recent - used on Tee Dees, Killer Bees, QZ and Venom. differences range from 4 fin heads being high compression dome shaped to high compression trumpet shaped. [27]

#315 Texaco Head - Hemispherical shape - Low Compression - 5 fins - used on Texaco Engine only. Supposedly allows greater cooling for engine when swinging larger propellers.[28]


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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  cox24711 on Sat Jul 11, 2015 2:12 pm

gossie wrote:
cox24711 wrote:
Jason_WI wrote:I think that's a Spacebug Jr.
it is a space bug jr and i think you have a rare on with the white tank assembly  ps the yellow ones are the most common .dose it have a pre 55 head on it ? or is it a later nomal style thred

thanks
Greg Smile

Please tell me about both heads on these things?????   Pics perhaps?????

How do you tell in pics just what it what?   I've been keen to buy one for years as I have plenty of .049 reed heads and .049/.051 Tee Dee heads, and I would hate to purchase an early one with a blown head or blow the head myself using it.

if i blew one i would drill 5 mm hole then tap it with the same thread as a glow plug and then done!
just like bernie's but with a pre 55' head
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  gossie on Sat Jul 11, 2015 5:42 pm

Okay thanks. But let's face it, the old and new heads look the same from the outside as such.

I doubt I would know what head it had if I bought an early engine until I pulled the head to see if a modern type plug would screw into it or not.
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  cox24711 on Sat Jul 11, 2015 5:48 pm

gossie wrote:Okay thanks.   But let's face it, the old and new heads look the same from the outside as such.

I doubt I would know what head it had if I bought an early engine until I pulled the head to see if a modern type plug would screw into it or not.

the threads are different so they are not in ter change able the pre 55 on is not in production and are very rare to buy replace ments because the last time they were made was i believe was 67

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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  gossie on Sat Jul 11, 2015 5:59 pm

cox24711 wrote:
gossie wrote:Okay thanks.   But let's face it, the old and new heads look the same from the outside as such.

I doubt I would know what head it had if I bought an early engine until I pulled the head to see if a modern type plug would screw into it or not.

the threads are different so  they are not in ter change able the pre 55 on is not in production and are very rare to buy replace ments because the last time they were made was i believe was 67



And that's exactly why I'm dubious about purchasing one in case it has the impossible to get head in it.
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  cox24711 on Sat Jul 11, 2015 6:31 pm

if i blew one i would drill 5 mm hole then tap it with the same thread as a glow plug and then done!
just like bernie's glo head adapter but with a pre 55' head

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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  KariFS on Sat Jul 11, 2015 8:04 pm

Are the cylinders interchangeable between Space Bug jr. and the later ones?

That was good info and a reminder about the heads. I'll have to go through my stuff and pick out the good looking 302-1's to mount on my "collectible" engines to keep them looking original.

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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  Oldenginerod on Sat Jul 11, 2015 9:34 pm

If you just want a functional head rather than an "authentic" head on an early Cox engine, the OK Cub heads which use a standard plug will fit the pre '55 Cox cylinders. It's sort of like an early Cox head adaptor, only by accident. I can't vouch for how they run, but the thread dimensions are apparently the same and I think we established over on 049 Collectors group that the they will physically fit. So if you want to run one of these engines for interest's sake but don't want to risk you original working head, Cub heads are easy to come by.

Rod.
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  getback on Sat Jul 11, 2015 10:45 pm

Good info Greg you have done your home work ,, I don't know if that one is the smaller thread or not , I couldn't get it off when cleaning up the cyl. came off and that was good enough as to not muff it up ! cleaned this engine in denatured alcohol for about a month then tooth brushed and Q tips work well,, the reed removal is a little tricky and have to bee carful with the retainer,  I have some extras and keep the amps down to not worry about the running , Greg I think the BLUE one is the more rare one it sure cost more there was a collector I beat out for it for a big penny lol!    I want to run one of my Space Bus next soon as I get the stand set up . Eric Very Happy
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  crankbndr on Sat Jul 11, 2015 11:31 pm

You can tell the old cyl. (and head) from the newer by looking at the profile. Also the old head seals (gasket) at the top of the cyl. and the newer at the bottom of the head.
Photos from .049 Collectors Group
older



newer
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  Mark Boesen on Sat Jul 11, 2015 11:43 pm

The first Space Bug Jr. was the white nylon plastic version, quickly followed by yellow, red and blue, i don't think any one is more rare than another. The white version came with a prop nut and later the tapered acorn style prop nut, supposedly designed to used your fingers to stop reverse runs. The neat thing about the SBJ is the smaller thin exhaust ports, designed for easy starts, they had the ability to swing a very large prop, one magazine back in the day had RPM results (unusable, but cool) with a 10x6", i alway thought it would be cool to video a SBJ swinging a 11x3 prop!
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  getback on Sun Jul 12, 2015 1:29 am

Thanks Crank , I new there was a way to tell but had forgotten tongue Mark that would be cool to see for sure and it is very easy to start , I like that since my time and patience's is slim now a day . I have seen these on prop rods was that original ? Eric
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  Mark Boesen on Sun Jul 12, 2015 1:16 pm

yep, that's where the blue tank version was mostly used for.
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  TDbandit on Sun Jul 12, 2015 2:55 pm

crankbndr wrote:You can tell the old cyl. (and head) from the newer by looking at the profile. Also the old head seals (gasket) at the top of the cyl. and the newer at the bottom of the head.
Photos from .049 Collectors Group
older



newer
My SB jr (White Tank) has a strange head, It's the newer large diameter 302-1 but still has the little fin on top at the electrode apparently it's pretty rare. Here's a pic. (Bandit)

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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  Cribbs74 on Sun Jul 12, 2015 3:19 pm

I ran one a year or two ago on a 10x6. The video is sideways, but you get the idea.

www.coxengineforum.com/t4227-space-bug-jr-10x6?highlight=space+bug+jr+10%C3%976

Ron
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  getback on Sun Jul 12, 2015 10:05 pm

Ron did you have that flash light on so your tach would read under florescent lighting ? Cool run yea not good for the ball socket You cant tighten up lol! Huh...
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  gcb on Mon Jul 13, 2015 12:45 am

getback wrote: ... Cool run yea not good for the ball socket You cant tighten up  


Yup! Some don't reset so well. Sad

George

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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  Cribbs74 on Mon Jul 13, 2015 2:27 am

Nice one George!

Yeah, I pulled out the 3 piece piston in favor of a newer one for this experiment.

Eric, my shop has flourescent lighting so yes, that's why I was using a flashlight.
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  TopBannana on Tue Jul 14, 2015 2:07 am

cox24711 wrote:if i blew one i would drill 5 mm hole then tap it with the same thread as a glow plug and then done!
just like bernie's glo head adapter but with a pre 55' head


Is there an original thread to this, if not how does this work on a modern head?
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  getback on Tue Jul 14, 2015 3:13 am

What do you consider modern if you mean standard yes with the right cly./pis. to fit , in 1955 they changed over to the standard size threads , this was my thread just talking about how much I enjoyed running one of space bug jr. for the first time Babe Bee Eric Very Happy
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Happy Re: SPACE BUG Jr. (gosh) TEST RUN

Post  cox24711 on Tue Jul 14, 2015 5:01 pm



i've all ways wanted one of those pre babe bee 049 engines they are so beautiful and elegant i've:cox engine: Babe Bee .049 Babe Bee .049 Babe Bee .049 always wanted a space bug they are soo cool
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