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Platt Zero Build Thread

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Platt Zero Build Thread

Old 08-31-2013, 05:46 AM
  #76  
[email protected]
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Ok... I admit it. I'm really scared to fly this now, and have been finding excuses to delay. My local club (from hobby hangar in Chantilly, VA) is very ready to help me maiden it. Now I just have to get it out to the field. Yikes!
Old 09-29-2013, 09:56 AM
  #77  
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I am ready to maiden this bird. As soon as I get the nerve.... Been putting in long hours at work and school, so no time to do much but dream. Hope to get it to the field this fall.
Old 09-29-2013, 11:31 AM
  #78  
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a little inspiration
http://www.youtube.com/watch?v=0Q8EAL_gdEA
Old 09-29-2013, 12:15 PM
  #79  
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This plane flies like it is on rails. I loved the one i had, just the retracts were its demise. Live and learn.
Old 09-29-2013, 12:26 PM
  #80  
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I have a Platt Zero that I acquired n trade. It is all framed uped, glassed and ready for paint. It appears to have Platt retracts. What do you think I should do with them?
Old 09-29-2013, 12:30 PM
  #81  
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Honestly,,,,, pitch 'em and save yourself the grief.
Old 08-15-2014, 10:20 PM
  #82  
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Hey Skip,

I haven't seen you at Hobby Hangar or the field lately...You must be busy.
Do you have any pix of your plane?

Bob I.

Last edited by NUMB LOCK; 08-15-2014 at 10:22 PM.
Old 10-06-2017, 06:41 AM
  #83  
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Originally Posted by [email protected] View Post
On to the wing...

I set up my adjustojig to build this wing... First problem... the wing is too wide for it if I built the ADM5 version. By doing the rounded tip A6M3, I could have fit it, but I am ornery... and wanted the A6M3, but not with a 6" solid balsa wing tip...

After studying things a bit, I realized it was possible to simply extend the 5/32" jig rods beyond the outer limit of the jig for the outside ribs. This seemed to work out OK. The second picture shows more clearly how the oustide ribs extend beyond the jig. With this setup, I sacrificed being able to completely invert the wing on the jig, but it worked out fine.

To do this, however, I had to figure out a way to support the center rib without the rods, so I glued on a jig that fit neatly into the adjusto jig's center slot. Looking back on this, I think it would have been smarter to get longer rods because at one point in the build, I realized that the center rib was slightly misalligned, which reguired some sawing a regluing, regrettably.

Dave's plan calls for building each half of the wing at a time on the plan using a piece of balsa to raise the trailing edges to the right washout height.

It tooka while to settle on where to drill the jig rod holes to allign things according to plan, and it also took awhile to figure out what dihidral to set up on the jig (forced me to recal some junior high geometry) since the hight at rib 11 on the plan is the height above the plan plane to the bottom of the rib. On the Adjustojig, I needed to figure the equivelent heights based on the "jig dowel points" which are not at the bottom of the rib... this confused me for a while... it took a couple extra days of thinking time to figure it out.

Picture 4 shows the ply/basla dihidral brace with the pencil marks I drew to maintain sanity...
.

Question: did you guys stick to the Platt dihedral as shown ( 4-5/8" for 34-7/8" at W11) = 7.6 degrees- it looks high.

Ziroli Zero plans show 4.5" at 37" = 6.9 degrees
Hal Parenti Top FLite 60 Zero shows 6-5/8" for 61"ws or 3-5/16" for 30.5"

I found a Mitsubshi Zero spec on the web that said 6.5 degrees of dihedral.

I also posted this question an anoterh RCU Zero thread at http://www.rcuniverse.com/forum/rc-w...l#post12373370
Comments?

thanks - ken
Old 10-07-2017, 01:12 AM
  #84  
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Great work on your Zero Skip!
Old 10-08-2017, 11:06 AM
  #85  
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Originally Posted by kenair View Post
.

Question: did you guys stick to the Platt dihedral as shown ( 4-5/8" for 34-7/8" at W11) = 7.6 degrees- it looks high.

Ziroli Zero plans show 4.5" at 37" = 6.9 degrees
Hal Parenti Top FLite 60 Zero shows 6-5/8" for 61"ws or 3-5/16" for 30.5"

I found a Mitsubshi Zero spec on the web that said 6.5 degrees of dihedral.

I also posted this question an anoterh RCU Zero thread at http://www.rcuniverse.com/forum/rc-w...l#post12373370
Comments?

thanks - ken
I've not built the Platt Zero but see no reason to put in any more than what is scale. Having said that, I've seen lots of Platt Zeros and did not notice that any of them looked like they had too much dihedral. Just my .02 cents of course.
Old 10-08-2017, 11:12 AM
  #86  
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I built mine per Dave's specifications, it flew great and the static scores were always good.
Old 12-01-2019, 09:04 AM
  #87  
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Default Dave Platt Zero Finishing Booklet

Came across your thread and what a beautiful build. I Am getting ready to build the same model and I'm looking for a copy of the finishing manual. Any Idea on where I can score one?
Old 12-02-2019, 12:35 AM
  #88  
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Originally Posted by Fireflite82 View Post
Came across your thread and what a beautiful build. I Am getting ready to build the same model and I'm looking for a copy of the finishing manual. Any Idea on where I can score one?
Do you mean a particular finishing manual for the Platt Zero or the finishing booklet he offered for some time?

I do have the general finishing booklet somewhere at home. If it is that (a simply typing machine written, without drawings nor images if I remember correctly!) what you are looking for, please confirm and send me your mail address via PM and I will scan and send it to you.

It is must be clear It will take me a few days, as I have to find the book at my library and scan the 20-30 pages.

Best Regards.

Last edited by jescardin; 12-02-2019 at 12:37 AM.
Old 01-24-2020, 08:21 AM
  #89  
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Default Dave Platt Zero

I have a set of drawings for the Dave Platt Zero but no instructions. Is there someone that I could purchase a copy of the instructions it would be very helpful.
The thread on this build was a big help in itself.
Old 01-24-2020, 08:26 AM
  #90  
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Originally Posted by Kelley J View Post
I have a set of drawings for the Dave Platt Zero but no instructions. Is there someone that I could purchase a copy of the instructions it would be very helpful.
The thread on this build was a big help in itself.
Hi, I build my Platt Zero from the plans, so Im not sure if there were instructions in a Dave Platt short kit. I followed the RCM magazine article, a copy at https://drive.google.com/open?id=0Bx...zE2RmphS1ZEVzg

cheers - ken
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Old 01-24-2020, 10:46 AM
  #91  
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Thank you Ken I appreciate your quick response
Jim
Old 02-23-2020, 08:51 AM
  #92  
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Default Dave Platt Zero

Building the Dave Platt Zero and would like to get the finishing manual. Is there someone I could purchase a copy from.
Thank you.
Kelley J
Old 02-23-2020, 08:59 AM
  #93  
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Originally Posted by Kelley J View Post
Building the Dave Platt Zero and would like to get the finishing manual. Is there someone I could purchase a copy from.
Thank you.
Kelley J
Hi, what do you mean by the "finishing manual" ?
Old 02-24-2020, 12:56 PM
  #94  
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I was told that there was one but maybe not
Old 02-24-2020, 01:05 PM
  #95  
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Also thank you for the link

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