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
September-2017
Kim's

"Cox Conquest gets a Run-Up."



PAST WINNERS
CEF Traveling Engine

Tach Race 2017 Updates
Ready for Tach Race 2017?
Profile Scale Reed Speed
Gallery


Win This Engine!
The Traveling Prop
World of Aviation

Cox Tee Dee.049/.051: Front Intake Position

View previous topic View next topic Go down

Cox Tee Dee.049/.051: Front Intake Position

Post  WestCoastD on Wed Jan 18, 2017 12:47 pm

Hello Fellow Cox Users:

I own a few Cox Tee Dee .049 & .051 engines, both brand-new (1990's variety).

I'm curious if the plastic front intake section can be rotated, or pivoted, sideways (upon it's horizontal axis)? Such that the actual intake is 90 degrees (either "09:00 o'clock" or "03:00 o'clock" position)? I've yet to actually disassemble one of these Cox engines, I thought I'd ask first.

I'm planning to use these engines for a 1/2A RC Boat kit, a Dumas Short Stuff (fiberglass) Deep Vee kit. I have a Profi (.8cc) tuned-pipe. Also an original Tatone Tee Dee .049 muffler/manifold. I was hoping the front intake section could rotate (to the side) such that I can route the Tatone manifold & Profi tuned-pipe forward, straight back?
avatar
WestCoastD
Beginner Poster
Beginner Poster

Posts : 8
Join date : 2015-05-04

View user profile

Back to top Go down

Re: Cox Tee Dee.049/.051: Front Intake Position

Post  fredvon4 on Wed Jan 18, 2017 1:05 pm

NO
It will then block off the intake opening in the crankcase...the crankcase on a Medallion or TeeDee, being one piece, are designed for front rotary intake---- that is a fixed opening in the aluminum crankcase and intake charge TIMED by the size and location of the opening in the hollow crank shaft
Thus the plastic (or aftermarket aluminum ) venturi must be positioned as designed and is not rotatable

BTW the OLD plastic Medallion or TeeDee carbs are delicate and easily damaged....MECOA has some replacements as well as some, hard to find, E-Bay aluminum repros

And here on CEF are several threads on repairing a cracked TeeDee carb
avatar
fredvon4
Diamond Member
Diamond Member

Trusted Seller
Posts : 2092
Join date : 2011-08-26
Age : 62
Location : Lampasas Texas

View user profile

Back to top Go down

Re: Cox Tee Dee.049/.051: Front Intake Position

Post  ian1954 on Wed Jan 18, 2017 1:06 pm

I am afraid not. The venturi position is associated with the opening in the crankshaft.

It could be done if you made a new crankshaft with the opening changed to match the venturi position,
avatar
ian1954
Diamond Member
Diamond Member

Posts : 2421
Join date : 2011-11-16
Age : 63
Location : England

View user profile

Back to top Go down

Re: Cox Tee Dee.049/.051: Front Intake Position

Post  WestCoastD on Wed Jan 18, 2017 1:29 pm

Thank you for your responses. I can totally understand what your describing in regards to the fixed crankshaft position


Dave
avatar
WestCoastD
Beginner Poster
Beginner Poster

Posts : 8
Join date : 2015-05-04

View user profile

Back to top Go down

Re: Cox Tee Dee.049/.051: Front Intake Position

Post  pkrankow on Wed Jan 18, 2017 3:45 pm

The plastic bodies are indexed to the cut for timing. The aluminum bodies are NOT indexed. While slight misalignment does not actually change the engine timing it does restrict airflow.

If you expect to save the body be careful taking it off they do tend to split. Hot water can help with this.

Phil
avatar
pkrankow
Diamond Member
Diamond Member

Posts : 2880
Join date : 2012-10-02
Location : Ohio

View user profile

Back to top Go down

Re: Cox Tee Dee.049/.051: Front Intake Position

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