1.) Deerminator - 08/05/2015

The intent.
A screw NEVER loosening

. Which to use?

2.) Swamp Fox - 08/05/2015

I'm going with some form of Loctite, but they make a Superglue, LOL.


Here's something that might help you, plus keep you occupied for a few minutes while everyone wakes up around here:


[url]http://www.loctiteproducts.com/product_advisor/index.shtml[/url]

3.) Triton Rich - 08/05/2015

[B] If you mean never, it's tough to beat the red loctite.[/B]

4.) Forkie McRut - 08/05/2015

Red loctite

5.) Jon - 08/05/2015

If I never want a screw/bolt to come out I either tack weld the head or safety wire it

6.) Triton Rich - 08/06/2015

[B]Safety wire? Not a bad idea Jon, but very few people outside of aviation know what the heck you're talking about :grin: [/B]

7.) Jon - 08/06/2015

Let's take a poll.........how many goobers on here know what safety wire is?

8.) Swamp Fox - 08/06/2015

I was using a cooler that seemed like a version of the Igloo Sportsman (without the lid hatch) the other day, and it had some kind of goofy wire thingie holding the drain plug cap on...I can tell you THAT thing wasn't coming unscrewed, even when you wanted it to... LOL. Major PITA, since we were using the cooler to pour water into buckets of cement. Too bad, because otherwise the cooler was well-made.

That's the first thing I thought of when Jon said "safety wire." :-)

9.) Jon - 08/06/2015

This is safety wire. Note, the wire always puts pressure on the head of the screw as to tighten it. This is proper.

10.) billy b - 08/06/2015

Jon, I have a safety wire twister, it was common practice to use back when I had a sprint car.

11.) bluecat - 08/06/2015

[QUOTE=Jon;33612]This is safety wire. Note, the wire always puts pressure on the head of the screw as to tighten it. This is proper.
[/QUOTE]

Interesting, I had no idea. Thanks.

12.) Jon - 08/06/2015

[QUOTE=billy b;33613]Jon, I have a safety wire twister, it was common practice to use back when I had a sprint car.[/QUOTE]

Yepp, race cars and bikes, tractors, heavy machinery, aircraft etc all use safety wire in high vibration areas

13.) Triton Rich - 08/06/2015

[B] Interesting. Outside of airplane stuff, I only remember seeing it in an off-roading magazine.[/B]

14.) Wild Bob - 08/06/2015

Safety wire in regards to Heavy Equipment in my world: Yep, our shop mechanic uses it regularly.

15.) luv2bowhunt - 08/06/2015

Unless you're flying or driving, use the red Loctite D.

16.) Deerminator - 08/06/2015

ok:tu:


When I was a tool & die apprentice I drilled many bolts for wire.

17.) Triton Rich - 08/09/2015

[B]This is the safety wire on the propeller I finished on Fri. Thought some of you folks might find it interesting.[/B]

18.) billy b - 08/09/2015

Very nice work Rich.

19.) Triton Rich - 08/09/2015

[B]Thank you Billy![/B]

20.) Jon - 08/10/2015

What's the Prop on Rich?

21.) Triton Rich - 08/10/2015

[QUOTE=Jon;33718]What's the Prop on Rich?[/QUOTE]

[B]It's an MT prop off of a Diamond DA-40. [/B]

22.) Jon - 08/10/2015

I didn't know you were a aircraft mechanic. That's a nice little t-tail plane

23.) Triton Rich - 08/10/2015

[QUOTE=Jon;33726]I didn't know you were a aircraft mechanic. That's a nice little t-tail plane[/QUOTE]

[B]Yep, been working at a Prop shop for a long time. We've talked about it before but it's been several years and probably a couple of different versions of this forum already :-)[/B]

24.) Swamp Fox - 08/10/2015

"You couldn't get me up in one of those things..."


LOL






$420K for that puppy, according to Wiki..."Built of composite materials"...Must be some good stuff, LOL.

25.) Triton Rich - 08/10/2015

[B]That's the two bladed Hartzell prop. The one in my pic was a three bladed one.[/B]

26.) Swamp Fox - 08/10/2015

What's the [I]Propellers for Dummies [/I]version of the difference between a two-blade and a three-blade on an airplane? Pros and cons?

27.) Jon - 08/10/2015

More air grab equals more performance

28.) Triton Rich - 08/10/2015

[QUOTE=Swamp Fox;33738]What's the [I]Propellers for Dummies [/I]version of the difference between a two-blade and a three-blade on an airplane? Pros and cons?[/QUOTE]

[B]In general, a two bladed prop is a larger diameter and will give better take-off and climb performance. The biggest con is that the two blader is usually quite a bit louder. That's because the speed out at the tips is faster given the same RPM and the closer that speed gets to supersonic, the louder. The two blade is also generally less expensive. Of course, there are many variables such as blade design where a modern 3 blade will out-perform an older 2 blade on the same airplane. On the DA-40, the two blade Hartzell is an aluminum blade where the blades on the 3 blade MT have a laminated wood core with carbon fiber composite covering it. Two very different designs but frankly, I don't know the performance specifics between those two on that airplane.[/B]

29.) Swamp Fox - 08/10/2015

Thanks, guys!

I wondered about noise...

30.) Jon - 08/10/2015

There's certainly more to it than "which one is better". There are 2 blade variable pitch props that could outperform a fixed 3 blade. There are too many options and applications BUT with blade surface area the same, a 3 blade will outperform a 2 blade as long as the engine can turn it at the same RPM.

31.) Deerminator - 08/10/2015

I don't know anything bout planes but are there a limit to how many blades on a prop?
I only know of 3 on a boat prop.

32.) Triton Rich - 08/10/2015

[B]We work on some that are 8 bladed, that's the most I know of. The problem is, the more openings that you need, the bigger the hub of the propeller gets. 5 blades is the most you see in the medium corporate planes (like King Airs). On the small stuff, 2 and 3 bladers are the most common with a couple odd 4 bladers.[/B]

33.) billy b - 08/10/2015

[QUOTE=Deerminator;33749]I don't know anything bout planes but are there a limit to how many blades on a prop?]



I did have a boat with a 200 Merc. and a five blade prop, would run about 80.

34.) Swamp Fox - 08/10/2015

Were you in that much in a hurry to get outsmarted by most of the fish that swim? :-)


I've come to the conclusion that if I'm gonna be humiliated by one of the lower life forms, I'll just mosey on over to them and savor the lead-up. :wink