"1/2 A" & "1/8 A" airplanes These are the small ones...more popular now than ever.

I would like opinions on going reverse rotation

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Old 12-23-2009, 09:59 PM
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Default I would like opinions on going reverse rotation

A while back I bought a really nice looking Tee Dee .051 but was told in advance that it had a broken crank shaft. Sure enough the crank pin was broke slap off. No other damage can be seen. So I have been sitting on this a while and have seen several left hand cranks go across the sales boards and I have had to stop and think more than once, should I try one? I feel like kicking myself for letting on go past for just six bucks...

Two key reasons to consider this. I haven't seen any standard rotation cranks and wonder about availability and price. In addition, it just won't stand much chance of running if I don't do something.

I have seen a few medallion cranks go across the board as well but aside from not being able to get the better performance, would a medallion even run in it? Timing and bore should be the same. Assuming of couse.

For now I have seven left hand props so no problem for now but in the future could be a huge problem.

Robert
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Old 12-23-2009, 11:21 PM
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Default RE: I would like opinions on going reverse rotation

Robert,

Running a Medallion crank in a TeeDee makes for a nice handling engine. The mild intake timing of the Medallion crank with the venturi and bypass porting of the TeeDee works well together.

LAter,
Tim
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Old 12-24-2009, 12:10 AM
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Default RE: I would like opinions on going reverse rotation

Thanks Tim, I had a feeling that was the case, thanks for verifying this. It is nice to know there are choices but inj the end I do need to eventually come up with a conventional Tee Dee .049/.051 crank if I ever wanted to sell it.

Robert
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Old 12-24-2009, 12:36 PM
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Default RE: I would like opinions on going reverse rotation

For $6 get one and run it for now. In the meantime keep an eye open for a RH crank. At least that way you can run it.

Where'd you find so many left hand props? I'd think these days that they'd be as rare as hen's teeth.
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Old 12-24-2009, 02:03 PM
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Default RE: I would like opinions on going reverse rotation

Bruce, the 6 dollar one slipped past me. It was the opening bid and I just didn't bother. Later I saw that only one had bid on it an it sold.

The props I have accumulated over the past few years.
One is a white Grish Tornado 5X3, another is a 5.5DX4P black Cox two blade and the rest are 5X3.5 three blade black Cox.

For now there seem to be plenty so getem while you can!
Item number: 390131727849

Item number: 260353776007

Item number: 230415878090

Item number: 200402133264

I can get plenty of the medallion RH cranks for five bucks a pop too for now.
Medallion crank
Item number: 350290801443
I think I will spring for one of those next week and shipping ain't bad either.

I believe the LH Tee Dee cranks were primarily for the control line speed crowd and probably incited into production by Dale Kirn.

Robert
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Old 12-24-2009, 03:05 PM
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Default RE: I would like opinions on going reverse rotation

I've taken the Medallion crank with the round, intake port and ground the port rectangular, like the TD crank. I didn't change the timing and it worked as well as a stock, TD crank. Worth a try if you have a steady hand.
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Old 12-24-2009, 03:42 PM
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Default RE: I would like opinions on going reverse rotation


Quote:
ORIGINAL: build light



I can get plenty of the medallion RH cranks for five bucks a pop too for now.
Medallion crank
Item number: 350290801443
I think I will spring for one of those next week and shipping ain't bad either.


Robert
Robert,

I think if you look closely at that Medallion crank you will see that it is a LH crank not a RH crank.

cheers, Graham in Ottawa Canada
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Old 12-24-2009, 05:24 PM
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Default RE: I would like opinions on going reverse rotation

Graham! You are right my friend! The attention is in the details they say...

I just don't think I have known of any LH Medallion crsnks. Honestly I would not have known by looking at ther product as I don't have one nor have I seen a standard Medallion shaft to compare.

Just the same I may buy one just because the price is nice. I just won't be in a hurry to do so as priority is pretty low right now.

So.... To show my ignorance a couple more questions, one pretty silly.

Left hand cranks were made by Cox for which engines?
Now the sillly one, why didn't Cox offer a .020 in the Medallion line?

Robert
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Old 12-24-2009, 05:42 PM
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Default RE: I would like opinions on going reverse rotation

Here is a RH TD crank.
300323589937
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Old 01-01-2010, 05:56 PM
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Default RE: I would like opinions on going reverse rotation

Hey guys I have plenty of new Tee Dee cranks in stock. I have RH & LH, I also have the very rare Tee Dee .05 Crankshaft that has the crank pin drilled out and balanced like the Killer Bee's. If you need one shoot me a PM. Oh and I also have plenty of the LH props too.

Cheers, Reggie
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