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Cox Engine of The Month
CEF Traveling Engine
Win This Engine!
Live on Patrol
Tee Bee build
Page 1 of 1
Tee Bee build
coxaddict Tue Nov 03, 2015 10:07 pm
Thanks for your interest.
The engine posted in the Cox Engine of the Month is my first prototype. It was designed to improve consistent running of a Bee style engine. The venturi internal diameter is sized for proper fuel draw on suction. The TD crankshaft/ front housing is mounted like Enya engines, using 4 screws. The engine was designed and built without drawings. Everything new was hand fitted. A No. 1 cylinder and low compression head was used for break in.
The engine was run using 10% nitro and a 6x3 prop. RPMs was a steady13k. 
The engine posted in the Cox Engine of the Month is my first prototype. It was designed to improve consistent running of a Bee style engine. The venturi internal diameter is sized for proper fuel draw on suction. The TD crankshaft/ front housing is mounted like Enya engines, using 4 screws. The engine was designed and built without drawings. Everything new was hand fitted. A No. 1 cylinder and low compression head was used for break in.
The engine was run using 10% nitro and a 6x3 prop. RPMs was a steady13k. 
coxaddict- Gold Member
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cox24711- Platinum Member
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Tee Bee build
RK Flyer Wed Nov 04, 2015 7:41 am
I noticed a spring in the fuel supply line , have you tried this before on Tee Dee engines?
I've had trouble getting my TD to draw fuel from a tank.
Nice looking work!
I've had trouble getting my TD to draw fuel from a tank.
Nice looking work!
RK Flyer- Gold Member
- Posts : 274
Join date : 2013-07-16
Location : Somerset, Kentucky
Re: Tee Bee build
getback Wed Nov 04, 2015 7:57 am
NICE!! you did a very good job on the machining and looks thought out to what you wanted , 13K is a good start out with a steady run with only 10% nitro . 
getback
getback
getback- Top Poster
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Re: Tee Bee build
coxaddict Wed Nov 04, 2015 1:30 pm
Thanks for all the compliments.
The hardest part in this build was deciding what steps to take machining the parts. I am not a trained machinist and any one with a lathe and mill can build one. It all starts with an idea, and CEF fueled the fire!
After watching Rusty's demonstration on the spring verses no spring I felt that having one in there should help keep fuel in the line. Never thought of using it on a tanked TD though.
I also have Cox based twins both geared and grafted case. All are prototypes and all are designed to be flown.
will post in the future.
Mahalo
coxaddict
The hardest part in this build was deciding what steps to take machining the parts. I am not a trained machinist and any one with a lathe and mill can build one. It all starts with an idea, and CEF fueled the fire!
After watching Rusty's demonstration on the spring verses no spring I felt that having one in there should help keep fuel in the line. Never thought of using it on a tanked TD though.
I also have Cox based twins both geared and grafted case. All are prototypes and all are designed to be flown.
will post in the future.
Mahalo
coxaddict
coxaddict- Gold Member
- Posts : 429
Join date : 2013-01-27
Location : north shore oahu, Hawaii
Re: Tee Bee build
getback Wed Nov 04, 2015 5:27 pm
THANKS AGAIN Mahalo !! keep up the good work 
getback
getback
getback- Top Poster
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Posts : 10436
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