Cox Engines Forum
You are not logged in! Please login or register! Guests are limited to posting in the "General Questions (Guest Posting Allowed)" section only. Becoming a member is fast, easy and FREE!


Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Cox Engine of The Month
November-2017
MauricioB's

"Cox Tee Dee .010"



PAST WINNERS
Speed Contest 2018
CEF Traveling Engine

Gallery


Win This Engine!
The Traveling Prop
World of Aviation

need help identifying this bee

View previous topic View next topic Go down

need help identifying this bee

Post  rogermharris on Wed Apr 08, 2015 9:53 pm

This one came in a lot I picked up on eBay
I don't recall seeing this backplate before. The fill nipple is on the left looking at it from the front and it has a sweep hole next to the fill nipple with nothing on the right. I also came with a later cylinder with the slits instead of the two open exhaust ports.  I cleaned it and overhauled it tonight. Hope to test run this one tomorrow night.


avatar
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 54
Location : Long Branch, New Jersey

View user profile

Back to top Go down

Re: need help identifying this bee

Post  pkrankow on Wed Apr 08, 2015 10:14 pm

One of the last metal backs. The new plastic backs are set up like that.

Phil
avatar
pkrankow
Diamond Member
Diamond Member

Posts : 2914
Join date : 2012-10-02
Location : Ohio

View user profile

Back to top Go down

Re: need help identifying this bee

Post  rogermharris on Wed Apr 08, 2015 10:19 pm

pkrankow wrote:One of the last metal backs.  The new plastic backs are set up like that.

Phil

Thanks Phil!

I did some searching and did not find anything. I actually ordered a plastic back plate to replace a broken one but had not noticed they were the same configuration. Give me a metal back plate any day...
avatar
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 54
Location : Long Branch, New Jersey

View user profile

Back to top Go down

Re: need help identifying this bee

Post  pkrankow on Wed Apr 08, 2015 11:00 pm

Chances are good it is a two bypass, one boost per bypass cylinder.  This is good as it is the best porting available.  Look through the exhaust for light under the piston at TDC to determine how much SPI there is.   Hold the engine against a light and at TDC look through the exhaust ports and see if light shows under the piston skirt. Most show a couple thou, barely any, but some show quite a bit more, which allows more air into the air/fuel charge.(they all have some, but most are nearly none)  The head is a high compression head from a TD.  You probably want 3 gaskets for 25% nitromethane.  

This is a good candidate to hop up a little.  The baby tank will need drilled out in the air passage to 5/64 or 2mm which will make the power similar to a black widow, if the P/C set has SPI then it will be a very strong engine.

You can also order a baby stunt tank through Coxengines.ca, but it will need the air passage opened up still.

Phil
avatar
pkrankow
Diamond Member
Diamond Member

Posts : 2914
Join date : 2012-10-02
Location : Ohio

View user profile

Back to top Go down

Re: need help identifying this bee

Post  rogermharris on Thu Apr 09, 2015 7:29 am

great info phil!  
thanks for sharing.  i will do a little investigating when i get a chance.
do they have starting problems with high compression? or are they meant to run a higher % of methane?  either way it sounds like i need to pick up some head gaskets and a stunt tank Very Happy Laughing Huh...

did some looking on the cox int. website and found scans of the manuals, a chart showing the differences between all the engines and a performance manual. downloaded, printed and put into a binder for future reference. had no idea there were so many variations..
avatar
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 54
Location : Long Branch, New Jersey

View user profile

Back to top Go down

Re: need help identifying this bee

Post  Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top

- Similar topics

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