Leadout Attachment Methods.

[Garf]

I would like to find a different method of attaching stranded leadouts to standard bellcranks besides the bushing method. I think that method creates as many problems as it solves. How about 1/4 scale clevices?

[jehold66203]

Do not know if it would work for stunt or not, but, might try mono-line buttons on the bellcrank. they hold up good on full blown Rat Racers. Another one I seen used one time was two bellcranks with pins thru them to hold the loop in the cable. DOC Holliday

[Garf]

I don't care for the monoline buttons, but the double bellcrank sounds interesting.

[pnevai]

I've used a double bellcrank derivitave, on the vector.

I used a shaped piece of CF. It was the same shape as the bellcrank except without the part which the pushrod would go into. I drilled a hole for the pivot and used a spare bushing and fit it to the CF.
The CF was stacked on top of the bellcrank. Then I cut some copper tube about 1/8 inch long. 2 of them. I drilled the bellcrank arms and the CF where the leadout would attach. to accept some small socket head screws. Then I fashioned the leadouts with eyelets on the bellcrank end the eyelets big enough so the copper tube would slip through easily. You slip the eyelet through over the tube and slip the tube/eylet with the lead out attached between the CF and Nylon bellcrank. Put the cap head screws through the CF/Tube/eyelet/bellcrank and secure with a self locking nut. A drop of epoxy on the threads and you end up with a friction free bullet proof leadout / bellcrank connection.

This technique mimics those fancy split end all CF CLPA bellcrank leadout assy's for sale out there. I used CF but issupose you can use anothe nylon bellcrank or a bit of aluminum to achieve the same thing.

[Garf]

I was thinking in terms of an improved attachment method that could be used with "standard" bellcranks like Perfect/Veco/Fox aluminum sheet metal bellcranks. The vast majority of people don't use CF custom bellcranks.

[grumpyjim]

Putting the leadout through a piece of copper tubing, then bent into a closed U, works well. It does add some bulk and weight. I don't think using clevises would be any great improvement.

Jim

[ferocious]

Another simple method, since you don't like the monoline button(which is the simplest of all)- Screw a 2/56 bolt through the bellcrank. Cut a short bushing of 1/8 in. brass tubing and glue it onto the bellcrank over the bolt. Put the leadout, with appropriate-sized eyelte on it, over the bushing and screw on a nylon lock nut and washer. Lube with a dab of antisieze compound.

If 2-56 bolts are he-man enough for you, use 3-48 or even 4-40.