Zero question
#4
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From: Fairfax,
VA
Platt no longer makes a complete kit, just short. I purchased one of the last ones a couple of years ago. The Platt kit seems to be very accurate and builds between 15 and 19 pounds. I think the Yellow kit comes in much heavier. Robinaire can make retracts for the Platt and I like them much better.
Carl
Carl
#6
Cap21r
Any chance you could share with the rest of us how you made/hinged/actuated the little short strut covers? I'm building a Ziroli zero and that part has me a little baffled.
Thanks,
Scott Dean
Any chance you could share with the rest of us how you made/hinged/actuated the little short strut covers? I'm building a Ziroli zero and that part has me a little baffled.
Thanks,
Scott Dean
#7

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From: Denham Springs
The small doors are hinged just before the center pivot point of the gear.
The gear doors are stroped to the strut, when the gear come down, the door on the strut touches what is a small wood wedg that pushes the small door open.
I am out of town, maybe later I can send pics.
It hinged wit a Du bro large hing
The gear doors are stroped to the strut, when the gear come down, the door on the strut touches what is a small wood wedg that pushes the small door open.
I am out of town, maybe later I can send pics.
It hinged wit a Du bro large hing
#9
Cap21r,
I checked out your thread on RCSB and I see the one picture of the little "kick" doors at the top of the strut. I think I see how they are acuated when the gear comes down but what pulls them up when the gear retracts? Pictures would be great when you get the chance.
Thanks,
Scott Dean
I checked out your thread on RCSB and I see the one picture of the little "kick" doors at the top of the strut. I think I see how they are acuated when the gear comes down but what pulls them up when the gear retracts? Pictures would be great when you get the chance.
Thanks,
Scott Dean
#10

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According to the real A6M2 at the Chino Planes of fame museum, the inside wheel doors are closed by an arm that is hit by the wheel as it retracts. On a model you would need to figure a way to keep the door from blowing closed by thrust, either by springs or hyper extended "link".
Steve
Steve
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From: Fairfax,
VA
I believe that is how the original works. I think its a sliding cam working against the closing spring. It might be possible to use a link attached to the strut but it would take time to position it properly. I used a similiar method to open and close the gear doors on my CJM HE-162. Even with the much bigger doors the wind did not harm the linkage. The jet is not very fast though.
ORIGINAL: BobH
Is it possible to have a small spring attached to the top portion of the door that wants to close it but the Main gear door keeps it open when the Gear are down?
Is it possible to have a small spring attached to the top portion of the door that wants to close it but the Main gear door keeps it open when the Gear are down?
#14
Here is how the real one is actuated. Could do the same thing but the geometry would be a real pain to work out. I'm hoping for something a little easier to engineer.
Scott
Scott




