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Old 11-12-2015, 09:29 PM
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If you want this 3D CAD model, let me know.
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Old 11-13-2015, 10:46 AM
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I already designed one, thanks though .
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Old 11-13-2015, 11:20 AM
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Why not a case hardened steel washer machined to a snug fit. ??


Milton
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Old 11-13-2015, 11:26 AM
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Because a Ultem (or nylon, etc) washer is 0.5 grams each, and the steel would be 3.5g each.
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Last edited by ghoffman; 11-13-2015 at 11:32 AM.
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Old 11-13-2015, 11:34 AM
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so you will be adding 6 grams to the weight of the engine, Should not have any effect on the balance of the crank system.


Milton
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Old 11-13-2015, 11:35 AM
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Still waiting for a reply back from Stratasys.
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Old 11-13-2015, 04:45 PM
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Just got a quote from Stratasys.They gave me two prices of 56.00 for one washer and didn't give me a price for more than one using the Ultem material.
Then a price of 36.00 for one nylon washer and 120.00 for ten.
So I am up for suggestions on what else to do.Maybe if there is enough interest we could get a better price to make it worthy on the Ultem?
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Old 11-13-2015, 04:48 PM
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Geese, I should charge a lot more for the ABS baffles I sell.If you want to try ABS, I'll make a pair for you to try for shipping only. ABS extrudes at 265C and is inert to gas/oil mix.
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Old 11-13-2015, 04:49 PM
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Quote:
Originally Posted by closetguy View Post
Just got a quote from Stratasys.They gave me two prices of 56.00 for one washer and didn't give me a price for more than one using the Ultem material.
Then a price of 36.00 for one nylon washer and 120.00 for ten.
So I am up for suggestions on what else to do.Maybe if there is enough interest we could get a better price to make it worthy on the Ultem?
http://www.onlinemetals.com/merchant...34&top_cat=181

I have a cnc lathe and can whack these out. Its pricy for the material. But. I would be willing to just make some for testing if you wanted to wack up the cost of the material......
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Old 11-13-2015, 04:53 PM
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That would be a worthy experiment. DuPont does not give away any of their stuff, but Ultem is an amazing material.
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Old 11-13-2015, 04:56 PM
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Agree.. Im willing to machine them for cost of material and shipping.
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Old 11-13-2015, 07:03 PM
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I am in Steve,let me know the price on the Ultem washers.I need to find out if it is the washers that are inferior or if there is a misalign issue in the engine.
Thanks for your offer.
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Old 11-13-2015, 09:35 PM
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I'm willing to chip in for the Ultem also. PM me and let me know.
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Old 11-13-2015, 09:53 PM
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Quote:
Originally Posted by ghoffman View Post
Geese, I should charge a lot more for the ABS baffles I sell.If you want to try ABS, I'll make a pair for you to try for shipping only. ABS extrudes at 265C and is inert to gas/oil mix.
I can 3D print some abs ones but I don't see them holding up but it might be worth a shot. However I did make some abs bushing for an atv that are still holding up great lol
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Old 11-13-2015, 10:16 PM
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I can 3D print some abs ones but I don't see them holding up but it might be worth a shot. However I did make some abs bushing for an ate that are still holding up great lol
I agree, but one test is worth a hundred opinions. The ABS tailwheel clevis I printed for my EF 91 has lasted for 2 years, (honestly) way more than I thought it would.
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