Sonoran Dave Posted December 6, 2019 Author Share Posted December 6, 2019 11 hours ago, Stillweaver hillbelli said: The pillow block " bearings" of Delrin,HDPE or? with the metal surround to capture are slick! Just regular ol HDPE. I was hoping it would be quieter than rattling inside a metal bushing. 6 hours ago, homefire said: Delrin is Slick. LOL Not far from Teflon I think. Not so good with Oils or Patrolium Products I think.. [PDF] "DG" Delrin Material Chemical Compatibility Chart - Aquamonix https://aquamonix.com.au › wp-content › uploads › 2015/12 › DG-Delrin-... Delrin is neat stuff! I have used it once to make some bushings, and it worked very well and still is...as far as I know. Quote Link to comment Share on other sites More sharing options...
Idaho Jim Posted December 6, 2019 Share Posted December 6, 2019 I've found Vesconite to be better than either Delrin, or HDPE for low-speed bushings. With steel, it's quieter than Delrin, and longer-lasting than HDPE. Jim Quote Link to comment Share on other sites More sharing options...
Sonoran Dave Posted December 6, 2019 Author Share Posted December 6, 2019 1 hour ago, Idaho Jim said: I've found Vesconite to be better than either Delrin, or HDPE for low-speed bushings. With steel, it's quieter than Delrin, and longer-lasting than HDPE. Jim Thanks Jim! I'll check it out. Quote Link to comment Share on other sites More sharing options...
Sonoran Dave Posted December 6, 2019 Author Share Posted December 6, 2019 Made some progress on the flap handle today. Quote Link to comment Share on other sites More sharing options...
Idaho Jim Posted December 7, 2019 Share Posted December 7, 2019 8 hours ago, ArcticDave said: Thanks Jim! I'll check it out. Dave, if you get ahold of them, they'll probably send you a free sample. They sent me a piece that was 1 1/2" in diameter, and 12" long. I offered to pay shipping, and they said "no problem", "glad to send it". Jim 2 Quote Link to comment Share on other sites More sharing options...
Guest Posted December 8, 2019 Share Posted December 8, 2019 Silicone high temp brake grease ,,,SIL-GLYDE,,, might be a good choice for your bushes ,cables, and other things that rub( to keep wear at a minimum) . It does not react with rubber n plastic stuff that would swell in contact with synthetic petro greases. Quote Link to comment Share on other sites More sharing options...
Au Seeker Posted December 8, 2019 Share Posted December 8, 2019 10 hours ago, Stillweaver hillbelli said: Silicone high temp brake grease ,,,SIL-GLYDE,,, might be a good choice for your bushes ,cables, and other things that rub( to keep wear at a minimum) . It does not react with rubber n plastic stuff that would swell in contact with synthetic petro greases. I use this stuff on a lot of applications on my Toyota 4Runner and can attest that it is a very good product. 1 Quote Link to comment Share on other sites More sharing options...
Sonoran Dave Posted December 8, 2019 Author Share Posted December 8, 2019 Thanks Weav. I'll look for some more of that. I used to have a tube of it, but it disappeared. It was good stuff and it seemed to last awhile. Quote Link to comment Share on other sites More sharing options...
Sonoran Dave Posted December 12, 2019 Author Share Posted December 12, 2019 More work done on the flap handle assembly. I used a roll pin with a couple of -3 washers in between the tabs to keep them aligned while welding them on. When a coil spring is depressed, there is a slight rotational element(that I was unaware of). That rotation was really jamming up the mechanism. In the third pic you can see the white internal floating piston of HDPE. That was my fix for the coil spring binding on the end of the tube. It works much smoother now with the HDPE rotating against the tube vs the spring. Bolting or pinning parts together can make it much easier to make them identical. Quote Link to comment Share on other sites More sharing options...
Idaho Jim Posted December 12, 2019 Share Posted December 12, 2019 Nice, Dave. A coil spring is nothing but a long torsion rod wound in a circle. When compressed, or stretched, it just twists the wire of the coil. Jim 1 1 Quote Link to comment Share on other sites More sharing options...
chrisski Posted December 12, 2019 Share Posted December 12, 2019 On 12/4/2019 at 4:06 PM, Sonoran Dave said: These look like something that is sold for my diesel pick up at $15 each to protect wire bundles from breaking by the fan clutch. https://www.bulletproofdiesel.com/bullet-proof-diesel-fan-clutch-wire-harness-saver-p/6502051.htm Quote Link to comment Share on other sites More sharing options...
Sonoran Dave Posted December 12, 2019 Author Share Posted December 12, 2019 They do look similar don't they? Well now you can make your own instead of buying them! Quote Link to comment Share on other sites More sharing options...
Sonoran Dave Posted December 13, 2019 Author Share Posted December 13, 2019 I got the flap handle and bell cranks welded yesterday. I had to come up with a way to securely attach the two halves together, and ended up sleeving the inside of the tube and using AN-3 bolts through the clam shell and tubing. It is very secure with zero slop. If I get the chance today, I'm hoping to finish the locking portion of the assembly and get some finished pictures. 1 Quote Link to comment Share on other sites More sharing options...
Idaho Jim Posted December 13, 2019 Share Posted December 13, 2019 I like that, Dave. Just wish I could weld like that! Jim 1 Quote Link to comment Share on other sites More sharing options...
Sonoran Dave Posted December 13, 2019 Author Share Posted December 13, 2019 46 minutes ago, Idaho Jim said: I like that, Dave. Just wish I could weld like that! Jim I wish I could take credit for them. This old Smith Airline is to blame for any good welds, I swear it has a mind of its own. 3 Quote Link to comment Share on other sites More sharing options...
Idaho Jim Posted December 14, 2019 Share Posted December 14, 2019 My welders have a mind of their own too, Dave. But their minds are much dumber than yours...LOL Jim 1 2 Quote Link to comment Share on other sites More sharing options...
Sonoran Dave Posted December 14, 2019 Author Share Posted December 14, 2019 Well... I began work on the lock mechanism yesterday and made some progress, but it has an unacceptable flaw. It's far too sloppy. When locked the bell cranks can move almost 3/4". Those bell cranks are directly linked to flaps, so 3/4" at the crank means substantially more at the flaps themselves. I can't have flaps flopping around like a limp noodle...that just won't do. I think the notch plate I made is good, but the slider needs to be redone. You can see in the last pic, that slider has a very loose fit on the handle tubing and that loose fit translates into slop when engaged. I'll try making a new slider with a snugger fit...but the entire locking assembly may have to go back to the drawing board if the slop isn't remedied. Quote Link to comment Share on other sites More sharing options...
Sonoran Dave Posted December 21, 2019 Author Share Posted December 21, 2019 I did it! After a couple of tries... I now have a working locking flap lever! I made the lock slider longer and a tighter fit around the handle tube. I also added another guide pin and replaced the loose linkage rods with welded ones. That really tightened the assembly up. It locks @ 0 degrees, 22 degrees and 50 degrees. It still needs to be fully welded, but it is all in place and it is nice and firm. 5 2 Quote Link to comment Share on other sites More sharing options...
Terry Soloman Posted December 21, 2019 Share Posted December 21, 2019 Great Work! 1 Quote Link to comment Share on other sites More sharing options...
Idaho Jim Posted December 22, 2019 Share Posted December 22, 2019 Looks good, Dave. Should be safe and reliable. Jim 1 Quote Link to comment Share on other sites More sharing options...
Sonoran Dave Posted December 23, 2019 Author Share Posted December 23, 2019 Thanks guys! It is certainly a part I wouldn't want to fail suddenly 1 Quote Link to comment Share on other sites More sharing options...
Sonoran Dave Posted January 9, 2020 Author Share Posted January 9, 2020 I fabricated and welded the hanger bar for the folding wings. This will make more sense after I build the wings. 4 1 Quote Link to comment Share on other sites More sharing options...
Sonoran Dave Posted February 18, 2020 Author Share Posted February 18, 2020 I finished welding and painting the topside of my fuselage today. I also got a chance to annoy the neighbors with some low horsepower action... 4 1 Quote Link to comment Share on other sites More sharing options...
Guest Posted February 19, 2020 Share Posted February 19, 2020 On 1/9/2020 at 7:22 AM, Sonoran Dave said: I fabricated and welded the hanger bar for the folding wings. This will make more sense after I build the wings. Looks like where the cloud hooks attach when you want extra climb rate. Quote Link to comment Share on other sites More sharing options...
homefire Posted February 19, 2020 Share Posted February 19, 2020 What did the engine come out to weight wise in the end Dave ? Quote Link to comment Share on other sites More sharing options...
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