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1/18 Scale Blue Box F4U-1A Corsair Modification


JayW

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Posted (edited)
6 hours ago, LSP_Kevin said:

Nice correction, Jay! I hate to say it, but I think the circumferential cut-outs are smaller and much more numerous on the real thing, too.

 

Are you talking about the tire?  If so, yes I agree, and I've thought on it too, except that there is a picture in Bell volume 7 where several tail wheels are shown one of which has the larger (and fewer) cutouts.  That's what I modeled.  I suppose I can re-do it with the smaller more numerous ones.  Maybe I will.   

 

If you are talking about the wheel, then please clarify.  Am having some difficulty finding good pics of the authentic wheel.

 

Edited by JayW
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11 minutes ago, JayW said:

 

Are you talking about the tire?  If so, yes I agree, and I've thought on it too, except that there is a picture in Bell volume 7 where several tail wheels are shown one of which has the larger (and fewer) cutouts.  That's what I modeled.  I suppose I can re-do it with the smaller more numerous ones.  Maybe I will.

 

 

Yep, the tyre. But based on your reply, I'd leave it alone! If you've found evidence to support your design choice, then that's good enough for me.

 

Kev

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2 hours ago, JayW said:

 

Are you talking about the tire?  If so, yes I agree, and I've thought on it too, except that there is a picture in Bell volume 7 where several tail wheels are shown one of which has the larger (and fewer) cutouts.  That's what I modeled.  I suppose I can re-do it with the smaller more numerous ones.  Maybe I will.   

 

If you are talking about the wheel, then please clarify.  Am having some difficulty finding good pics of the authentic wheel.

 

I actually have a tailwheel that I bought off of ebay several years ago that matches exactly the one you referenced from Dana Bell's birdcage book, the center one on page 42. Both sides are dished with the hole on one side for the tire valve. There are six 1/4 inch thread bolts (7/16 heads) around the center holding the halves together. The data plate riveted to the side with the tire valve says it was made by Hayes Industries, gives the tire size as 12 1/2 x 4 1/2 - 4 1/2. The core halves are actually aluminum, the outer dishes are made of steel and carry the bearings and are pressed onto the aluminum cores.

 

If you would like some detailed photos, I'd be happy to shoot you some this weekend.

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Since we all seem to be stuck on your tail wheel, to coin a phrase I would think if you like your dust covers you can keep your dust covers.  Would save you a lot of work, deciding and fiddling down the road.  Plus you have shown them to be historically correct for your airplane.  Like you said, bigger flobzits to ream and all.

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7 hours ago, Allan Peters said:

I actually have a tailwheel that I bought off of ebay several years ago that matches exactly the one you referenced from Dana Bell's birdcage book, the center one on page 42. Both sides are dished with the hole on one side for the tire valve. There are six 1/4 inch thread bolts (7/16 heads) around the center holding the halves together. The data plate riveted to the side with the tire valve says it was made by Hayes Industries, gives the tire size as 12 1/2 x 4 1/2 - 4 1/2. The core halves are actually aluminum, the outer dishes are made of steel and carry the bearings and are pressed onto the aluminum cores.

 

If you would like some detailed photos, I'd be happy to shoot you some this weekend.

 

Of course, I'd love to see some pictures of that wheel!  Looking more closely at Bell page 47, it looks to me that the center and right hand picture show the same kind of wheel (but different tire).  The picture on the left is in shadow, so harder to tell, but my guess is that it has the dust covers on it.

 

Here is page 47 from Bell:

 

Gi4hwHxh.jpg?1

 

Kevin - note the tire in the center picture - that's the one I modeled, for better or for worse.

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10 hours ago, LSP_Kevin said:

If you've found evidence to support your design choice, then that's good enough for me.

 

Thanks Kevin.  I posted page 47 in Bell volume 7 for everyone's viewing pleasure.  See the center photo for that tire.  I still might redesign it with more slots.  The process is not that hard. 

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And…….if I finally correctly read the drawing you posted earlier, it appears you would not have to drill a hole in the dust cover and create a valve stem after all because the dust cover, well, covers it up.   No access without removing the cover.  Which is probably why you also see photos of Corsairs without dust covers back there - too much to mess with whenever it needed airing up.

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11 hours ago, Oldbaldguy said:

And…….if I finally correctly read the drawing you posted earlier, it appears you would not have to drill a hole in the dust cover and create a valve stem after all because the dust cover, well, covers it up.   No access without removing the cover.  Which is probably why you also see photos of Corsairs without dust covers back there - too much to mess with whenever it needed airing up.

 

Yes!  I have thought this over too.  To take it a little further, the wheel/tire combination would have to be removed entirely just to air up the tire!  And airing up the tire (or at least checking inflation pressure) is something that must happen relatively often - probably before each mission - like many other line maintenance items where special access features are provided just for that task (like addition of oil).  Removing and replacing the wheel/tire assembly, and jacking/lifting the back of the aircraft to do so, is labor entirely incompatible with such a common task as checking air pressure.  For that reason, I would be really surprised to not find an easy way to get to that valve stem with dust covers installed.   Now - to find it.  Am hesitant to use the wheel with dust cover unless I am familiar with that feature, if it exists.

 

In the meant time, I checked the Hellcat tail wheel install drawing (Hellcat uses the same tail wheel I believe), and it specifies an option to use a wheel from any of the following manufacturers - Bendix, Firestone, Goodyear, Hayes.  The wheel, BTW is government furnished equipment.

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17 hours ago, Kaeone57 said:

You got this Jay!

 

No I don't Alfonso!  Look at the interest level on my thread on the tail wheel.  The eyes of the modeling world are on me, it feels like, so I have to get it right.  I've got the tire - I'll give you that.  But I have to sort out the wheel and dust cover details.  Do you have any expert advise on that?  

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1 hour ago, JayW said:

 

No I don't Alfonso!  Look at the interest level on my thread on the tail wheel.  The eyes of the modeling world are on me, it feels like, so I have to get it right.  I've got the tire - I'll give you that.  But I have to sort out the wheel and dust cover details.  Do you have any expert advise on that?  

Never seen a dust cover on a Corsair tail wheel in any picture of an in service aircraft at all. Whether it be a F4U-1, -1"A"-D or even a -4, -5,-7 or AU-1. To be honest, didn't even know it existed as I've never seen it before, LoL

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