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Mar 05, 2012, 10:24 PM
Registered User

control line

is there a guide as to the length the control lines should be? i am running .049, and 098 and was wondering.
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Mar 05, 2012, 11:15 PM
Old Timer
The Kiwi's Avatar

.049 engines vary widely in performance

The most common ones were made by L M Cox Company as Babe Bee engines, and related engines included in Cox RTF planes. These are ordinary small motors and 30' of line is about right for those.

Some of the very best of the .049s were also made by Cox, and were called "TeeDee" model engines. They will pull 35' of line fairly easily. Sold at costs of nearly ten times as much, several extremely high powered .049s have been made that are flown with 42' lines (I am thinking of one made by "Fora" in eastern Europe).

The only ".098s" that I ever heard of weren't as good for power as the TeeDee .049s (although Cox Company made a pair of excellent .09s). I'm thinking specifically of the .098s made by McCoy back in the early 1950s. They were really weak sauce, so about 35' of line for those.

Mar 05, 2012, 11:48 PM
Registered User

line length

good info, no sense trying to pull 45 ft then.
Mar 06, 2012, 04:45 PM
Registered User
Originally Posted by mudcan
good info, no sense trying to pull 45 ft then.
What engines are you running, and what diameter 45' lines?

A Tee Dee .049 should pull .008 x 45' lines OK.

A Tee Dee .09 can handle .012 x 52' lones OK in most appropriate has the power of an older .15. So should most .09 diesels.

If you are running an old engine like the McCoy .098 or an OK Cub .09, the 45' lines should be appropriate.

As Kiwi already said, most Babe Bees, OK Cubs, etc. would be better with 30'-35' lines.

The real answer can only be seen by trying. If you are inexperienced, go for the shorter lengths. You can try longer lines later.


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