337 Skymaster +Floats

337 Skymaster +Floats

Has anyone attempted to put the Cessna 337 Skymaster on floats?  If anyone has any experience with such an endeavor I would appreciate hearing about it.  Thank you, and . . .

Regards,
Earl M. White

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Re: 337 Skymaster +Floats

I own N1795Z which was on floats 25 years ago, but never could make it stop eating rear props and it was dreadfully slow

Jack

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Re: 337 Skymaster +Floats

Thanks Jack . . .

I was afraid that spray on the rear prop might be an issue and I was sure that floats would make her a little sluggish.  I have been studying the situation (I'm an engineer) with an eye toward a single center float with wing pontoons.  A single hull with properly configured spray rails and some aerodynamics might make the program feasible.  My E-Mail address is This e-mail address is being protected from spambots. You need JavaScript enabled to view it and I would appreciate any hard data or recollections you may have.  I appreciate your response.

Regards,
Earl

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Re: 337 Skymaster +Floats

Hey I've got the same question?

Did you ever get any feedback on a Skymaster on floats??? If so do you have pictures...

Thanking you in advance for your assistance....

Frank A. Savage

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Re: 337 Skymaster +Floats

I have an old Cessna book at home which I'm pretty sure has a picture of a straight leg 337 ( model 335 0r 336) on floats. If you're still interested, let me know & I'll scan it for you.

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Re: 337 Skymaster +Floats

Please send me the picture, too, if you dont mind.  I was just recenty asking this question to quite a few folks.  I talked to a guy from wipline (leading manufacturer of amphib floats) who said that it was infeasible due to the spray on the rear prop.  Center float would be interesting, though!

Aaron Nelson
Iowa

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Re: 337 Skymaster +Floats

If you could in include me in the list wanting the picture, it was a 336, N1795Z, a stol kit would have helped but it would have needed bigger engines to be worthwhile.  Gil Devore had a scheme using a set of airfoils between the floats to protect the rear prop, but the project died due to the general lack of performance

We still have the airplane

Jack

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Re: 337 Skymaster +Floats

I'm a radio control model enthusiast with a nice set of 76" span plans for Skymaster looking for an actual subject on floats to model. I'll be grateful for any photo I get. Thanks, Bill

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Re: 337 Skymaster +Floats

Hi. I had the same question regarding floats on a Skymaster and saw that you were looking into this question some time go ago on this forum thread. I would be interested to hear your conclusions (plus if you happen to have the picture of the plane with the floats I would be interested to see that as well.
Thanks,
Chris

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Re: 337 Skymaster +Floats

A Center Pontoon with wing pontoons is an impressive idea. I had recently been wandering about the Skymaster on floats.

Why not use a longer, thinner float?

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Re: 337 Skymaster +Floats

I have gave a lot of thought to putting floats on a 337 and was thinking of modafying a set of floats in the manner of a pickel fork boat by adding a wing type center to help prop spray but im afraid that if your rigging was not just perfect it may make the plane pitch out of control on its own and one may not recover it.makes me wander if the wing would pack the weight of the floats? another way would be to use some material like on a trampoline that would flex with the wind and may be attached by springs to the float and this would alow flex and keep heavy water off the prop still may get small mist but prop may be able to handle it,also allowing air to go through. just a thought

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Re: 337 Skymaster +Floats

The float has a maximum practical length.  The problem is with a longer float when you go to increase the angle of attack to lift off the water the tail of the float will drag in the water and slow the plane down. When taking off in most float planes you have to find the sweet spot.  Too nose down and not enough lift on the wings.  Too nose up and the tails of the floats drag.

In regards to a skymaster on floats I would guess any 185 would out perform it.  Outriggers would be needed (like a Seabee) which would cause lots of drag.  The rear prop would still get chewed up by water spray.  Water blown from the front prop would end up on the back. The sky master would be way heavier than the 185.

It would be an interesting engineering task to accomplish but otherwise a waste of time.

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Re: 337 Skymaster +Floats

Hi guys,  what's the latest on a centerline float with smaller wingtip floats?  Thanks

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Re: 337 Skymaster +Floats

Me again. Does anyone know where I can find a 336 amphib/float??

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Re: 337 Skymaster +Floats

Hi,

I am also interested in a picture of a skymaster on floats as I am currently building a 1/2 scale radio controlled skymaster and have more access to water that large areas of land. The rear prop does seem to be the biggest issue but it would be good to see how they look on floats.

many thanks in advance

Paul

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Re: 337 Skymaster +Floats

In Canada a guy buy the name of Gronfors (?) had an STC'ed conversion. I will see if I can dig up the details...

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Re: 337 Skymaster +Floats

Hi guy's!
I'm also interested on the C-337 on Floats.  If you find out the STC on that and maybe some pic's, shoot me the info if it's not too much trouble.

Tim

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