1. Home
  2. ⏣ General Metalworking
  3. Cox TD Crankshaft

Cox TD Crankshaft

Some actual metalworking:

formatting link
This is a Cox TD 09 that came to me with a warped cylinder and a bent connecting rod. Since I have ambitions to build my own engines, and since engine parts are hard to find for these, I figured I'd just build a cylinder, piston, and rod, and be happy. Then I found out the crank shaft was bent, too.

In a moment of supreme shade-tree mechanic-itis, I whacked the crank pin trying to straighten it (on the grounds that the thing was trashed anyway). It broke, which is what you see in the shot of the two cranks.

Next item on the agenda: a prop driver. Then I can get back to making a piston for this critter.

Reply to
Tim Wescott
Loading thread data ...

WHAT?, this group is for all sort of BS now. I just looked. Downloaded nine new topics. Only this one had any swarf in it. You're out of step

Glad to know I'm not the only one.

What are your plans for the driver?

Karl

Reply to
karltownsend.NOT

Since you folks are interested in them and might have an idea, What would an Allyn Sea Fury Outboard be worth? I have one that is missing a few pieces (prop driver disc, the toothed spring strip for directional control and one of the clamping screws. Also have a Cox .074 and a .049 as well as an odd car motor with a 4 screw case and large gear flywheel with fan.

The Sea Fury runs, so does the .074. The other two are probably parts motors.

Reply to
Steve W.

Just a thought... while parts may be difficult to find, they aren't impossible. I haven't looked recently, they show up on eBay once in a while, as does everything else.

I'd try setting up a bunch of 'saved searches' in/on your 'my ebay' page... there by letting it notify you whenever anything of interest is listed.

I well remember those TD's... they really scream! Seems I remember reading that cox hand selected part combinations for each individual engine build-up... IIRC, the piston/cylinder selection was aided by an air leakage test of some sort; similar to a differential compression test I suppose.

Anyway, Good Luck!

Erik

Reply to
Erik

I'm not up on prices, other than if the Sea Fury were complete it would probably be worth $20 to $50 just for what it does, not as a Valuable Antique. Whether it's worth $5 or $500 as a Valuable Antique -- I dunno.

I'd look on eBay, and be sensitive to the subtleties that make these things collector's items. Or, I'd give them to a friend that cared.

Reply to
Tim Wescott

The primary goal of this exercise is to learn to build engines without doing the whole damn thing all at once. This ambition took a severe blow with the discovery of the bent crankshaft -- but hey, I'm learning more.

If I just wanted a working TD 09, I could buy one complete on the Bay.

Reply to
Tim Wescott

Conical on the outside, out to about 5/8" at the prop. Conical on the inside, to match the crankshaft. A circle of spotted holes in lieu of knurling, because Santa has adamantly refused to bring me machine tools for Christmas.

Reply to
Tim Wescott

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.