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Thread: Building wing plates
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10-23-2016, 06:14 AM #16
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loop liked this post
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10-23-2016, 06:28 AM #17
look at those welds flawless
21 Tuff, Mercury 300X
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10-23-2016, 06:38 AM #18
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10-23-2016, 06:40 AM #19
and you cant find a better guy to do business with I cant imagine if he had a pastery shop in Bensonhurst......
21 Tuff, Mercury 300X
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AZMIDLYF liked this post
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10-23-2016, 08:16 AM #20
Chaz
Very nice work as always
what are your thoughts on heat treating 6061 after welding? when is it necessary?limited skills
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10-23-2016, 11:31 PM #21
It's that word "probably" that has me toss and turn half the night ...
I've built quite a few plates now . Stepped , flat , flat with a bushing in the box , and have settled in on flat with the bushing welded in place .
I was taught to chamfer holes , roll all the edge's , use large radius's in any change in direction . And in the case of steering or brake parts , to leave plenty of material around the outside of any attachment point or loop .
Dirk , I better stick with metal .... If I owned a canole' factory , between pastries and black coffee with a lemon peel I'd never come up for air ... Marone
Heat treat ... when you get aluminum so hot it turn's to mush , better send the part to be solution ( 1000* and water dipped) treated . Other than that , just preheat to 300* weld the part without getting excessive , and tent it back to normal . It might be T-4 or 5 after .. but I think a little more malleable is better than brittle , any day of the week ....
When I get lost , I go see my "forensic stress analysis" buddy Joe . Another X Pratt-rat that skkkkeeeeeerz the ^%$% out of me just as much as he teach's me ....
http://martinmetlabs.com/home.html
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10-24-2016, 04:57 AM #22It's that word "probably" that has me toss and turn half the night ...
Are radius also know as sweeps.....
I agree on always being sure when it comes to any important safety parts!.....
I could have easily lifted the boat from that plate.....
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10-24-2016, 08:21 AM #23
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10-24-2016, 11:39 AM #24
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NICE PAIR liked this post
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10-24-2016, 03:15 PM #25Screaming And Flying!
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I have some OMC factory wing plates that are so hard you would think they were steel. I wonder what plate and what they were hardened to?
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10-24-2016, 06:13 PM #26
Almost as good as the canole' itself ..
Are radius also know as sweeps.....
I agree on always being sure when it comes to any important safety parts!.....
I could have easily lifted the boat from that plate.....
Powerabout :
- I have some OMC factory wing plates that are so hard you would think they were steel. I wonder what plate and what they were hardened to?
Well power , there is artificial aging where you heat the part to 350* for 8 hours and then let it come back to room temp .
And then there's natural aging , but it takes about 20 years minimum to get there ...
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tux974 liked this post
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10-24-2016, 07:09 PM #27
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10-25-2016, 07:33 AM #28
LMAO ..... Look at those beads ...
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10-25-2016, 08:46 AM #29
[Most tend to overbuild , me included . Go look at the linkage that changes the pitch of a helicopter's rotor if you want a good scare. } You got that right chaz, ours weighs 11900 lbs and 8 3/8 low profile nuts hold the whole mast in the transmission case and the studs are threaded into an aluminum housing, crazy. if i built that it would never fly.. my spec would be no less than 20 1/2 inconel bolts... heads in the case no threads to pull out. lol , Dave
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10-25-2016, 09:56 PM #30
A few years ago I built a trailer / landing pad for the sheriff's dept . They pull the trailer / helo out of the building with an ATV , do their thing and put it back away when they are done .
When we were measuring the job , I remember looking at the linkages and thinking that even though all it needs to do is overcome shear loads , a little extra security couldn't hurt . I think the rotor used 3/16 ths and 1/4" rod ends ..
Make's as much sense as lifting 6 ton's with 8 half nut's ... But I'm sure they have documented stress analysis testing to show where there is a certain percentage of overkill built in ...
Take's me a while to get my mind around the .035 and .049 wall tubing jobs I get every now and again .. I ask , man are you sure ... ? They say my .058 and .065 is for makin tanks and rail road cars ... I don't see too much stuff fall out of the sky , so they must know something ...
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