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-   -   Zero question (https://www.rcuniverse.com/forum/rc-warbirds-warplanes-200/5538270-zero-question.html)

metaldriver 03-09-2007 11:09 PM

Zero question
 
Need some input here fella's. Which set of plans or kit is considered to be the most accurate Mitsubishi Zero available?

t_burley 03-09-2007 11:40 PM

RE: Zero question
 
I have the Platt zero. and it appears to be very accurate

Chad Veich 03-10-2007 11:18 AM

RE: Zero question
 
I think the Yellow kit is pretty accurate as well, being based on the Bert Baker plans.

carlbecker 03-11-2007 08:18 AM

RE: Zero question
 
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

cap21r 03-17-2007 10:59 PM

RE: Zero question
 
1 Attachment(s)
i have a Platt Zero, I like it. G-38 for power

Shrky 03-20-2007 06:37 PM

RE: Zero question
 
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

cap21r 03-21-2007 06:22 AM

RE: Zero question
 
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

cap21r 03-21-2007 06:37 AM

RE: Zero question
 
I have a thread that shows me when I had to build a new wing.
building, sheeting , detailing, painting

RCSCALEBUILDERS thread is under Dave Platt plans

Shrky 03-21-2007 08:41 AM

RE: Zero question
 
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

SCALECRAFT 03-21-2007 09:08 PM

RE: Zero question
 
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

Shrky 03-22-2007 08:51 AM

RE: Zero question
 
1 Attachment(s)
Steve,

The door Im talking about is the small one at the top of the strut.



Scott

BobH 03-22-2007 09:53 AM

RE: Zero question
 
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?

carlbecker 03-22-2007 11:20 AM

RE: Zero question
 
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?

Shrky 03-22-2007 10:55 PM

RE: Zero question
 
1 Attachment(s)
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


cap21r 03-23-2007 05:55 AM

RE: Zero question
 
All thats fine, I used a small rubberband


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