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

Logged in members see NO ADVERTISEMENTS!


Space Bug Jr Hop-up kit Cox_ba12





Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Cox Engine of The Month
January-2022
Mark Boesen's

Twin Needle Thermal Hopper with a Cage Mount.



PAST WINNERS
CEF Traveling Engine

Dick Russ Models
Win This Engine!
Forum Store
CEF Ear Savers
Gallery


Space Bug Jr Hop-up kit Empty

Space Bug Jr Hop-up kit

Go down

Space Bug Jr Hop-up kit Empty Space Bug Jr Hop-up kit

Post  jmendoza Wed Sep 15, 2021 9:54 pm

My pal used to have a Space Bug Jr Hop-up kit that was from Cox. He told me it had a bigger venturi and dual bypass, plus a 302 high compression head...but my memory may be a bit dim. Anyone here have one they can share with us to see what it was?

Jay
jmendoza
jmendoza
Silver Member
Silver Member

Posts : 69
Join date : 2017-07-18

Back to top Go down

Space Bug Jr Hop-up kit Empty Re: Space Bug Jr Hop-up kit

Post  Kim Thu Sep 16, 2021 6:56 am

I got this one at a Swap Meet a long time ago (20 years or so). Unfortunately, it didn't have its instruction sheet.

The "Hop-Up" glowhead (on the left in the photo) does not appear to be any different from the spare sent to me by one of our members (sorry I forgot your name, but it IS still appreciated!). This is assuming that stuff wasn't swapped around before I got the kit.

So, maybe someone here can tell us how the "Hop-Up" came about.

Space Bug Jr Hop-up kit Img_7112
Space Bug Jr Hop-up kit Img_7111
Space Bug Jr Hop-up kit Img_7110
Space Bug Jr Hop-up kit Img_7113
Kim
Kim
Top Poster
Top Poster

2020 Supporter

2021 Supporter

2022 Supporter

Posts : 7786
Join date : 2011-09-06
Location : South East Missouri

Back to top Go down

Space Bug Jr Hop-up kit Empty Re: Space Bug Jr Hop-up kit

Post  crankbndr Thu Sep 16, 2021 10:19 am

Some info on the Space Bug hop up kit. Never heard of one for Jr. Space Bug came with two intake bypass cylinder.

https://www.coxengineforum.com/t11486-space-bug-ads-in-1952-issue-air-trails-magazines


EX has a Q&A sheet that mentions the kit


http://www.exmodelengines.com/sbquestions.pdf
crankbndr
crankbndr
Diamond Member
Diamond Member

Posts : 2816
Join date : 2011-12-10
Location : Homestead FL

Back to top Go down

Space Bug Jr Hop-up kit Empty Re: Space Bug Jr Hop-up kit

Post  jmendoza Thu Sep 16, 2021 1:18 pm

Thanks guys. That is the kit I remember, but was mistaken about the cylinder. The tank does have a bored venturi, notice the directions tell you to open the needle valve 2 extra turns due to that. The high compression head is tricky because depending on how much nitro you use, it may require extra gaskets, or possibly using the low compression head. Weather and air density has an effect also.

I talked with one of my friends who worked with me at Cox, and he verified that the first batch of Space Bugs did come with standard short glow plugs. Cox found that there was too much variation in different brands of glow plugs that affected the engine performance so they decided to make their own plugs, and then glow heads to ensure repeatable engine performance.
jmendoza
jmendoza
Silver Member
Silver Member

Posts : 69
Join date : 2017-07-18

Back to top Go down

Space Bug Jr Hop-up kit Empty Re: Space Bug Jr Hop-up kit

Post  Kim Thu Sep 16, 2021 2:25 pm

Oh, my mistake...I hadn't had enough coffee before reading your post and missed the "Jr" !
Kim
Kim
Top Poster
Top Poster

2020 Supporter

2021 Supporter

2022 Supporter

Posts : 7786
Join date : 2011-09-06
Location : South East Missouri

Back to top Go down

Space Bug Jr Hop-up kit Empty Re: Space Bug Jr Hop-up kit

Post  balogh Thu Sep 16, 2021 4:03 pm

@jmendoza wrote:.

I talked with one of my friends who worked with me at Cox, ...

I cannot tell you how much I envy you for your employment by COX... Very Happy
balogh
balogh
Top Poster
Top Poster

2020 Supporter

2022 Supporter

Posts : 3711
Join date : 2011-11-06
Age : 63
Location : Budapest Hungary

Back to top Go down

Space Bug Jr Hop-up kit Empty Cox

Post  jmendoza Fri Sep 17, 2021 11:08 am

Had I not worked at Cox in customer service, I would have never known about the "Bug" series of engines or the RR-1. Dale Kirn designed the RR-1 and I still have a faded copy of the blueprint for one that he gave me.
jmendoza
jmendoza
Silver Member
Silver Member

Posts : 69
Join date : 2017-07-18

Back to top Go down

Space Bug Jr Hop-up kit Empty Re: Space Bug Jr Hop-up kit

Post  getback Sat Sep 18, 2021 6:31 am

Some more info in this discussion https://www.coxengineforum.com/t11486-space-bug-ads-in-1952-issue-air-trails-magazines  Thanks for dropping by Jim ! Small Cox Logo Very Happy Small Cox Logo
getback
getback
Top Poster
Top Poster

2020 Supporter

2022 Supporter

Posts : 8439
Join date : 2013-01-18
Age : 64
Location : julian , NC

Back to top Go down

Space Bug Jr Hop-up kit Empty Re: Space Bug Jr Hop-up kit

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