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Waldo
Sr. Member
Posts: 187
Diesel power :o)
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« Reply #6 on: December 02, 2008, 12:38:52 pm » |
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Hmm... not that I have any experience with DIY PU bushes, but I know that our plastics supplier can supply PU bars, I guess all you need is a leathe and a bit of time... I have had rubber materials machined before, it's not the easiest material to work with, but it's possible But as Krede mentioned, possible not worth the effort... I probably have both the material and a leathe at work, and I still wouldn't be bothered if I can still get fairly cheap orig. rubber bushes... Thanks for the info Krede; looks like it will be standard bushes then.
I am still interested to know about how to make your your own PU bushes though.
John
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lewisman
Sr. Member
Posts: 442
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« Reply #12 on: February 01, 2009, 01:19:35 am » |
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Bart_Maztra
Sr. Member
Posts: 211
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« Reply #13 on: February 01, 2009, 01:37:47 pm » |
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http://www.heinrici-klassik.de/start.php?d_2421_Urethan906.phpA short translation: You need to get an innertube, which is exactly the same as the original. Same lenghth and diameter and wallthicknes. You might have to make it on a lathe. You also need an outher tube. If the outhertube is part of the bush, it needs to be exactly the same as the original. If the outher tube is not part of the bush, you need it anyway as a mold. In that case the inner diameter is important. Apply some silicon spray on the inside, so the polyurethane will separate easily. Use a magnetic plate to hold the tubes in position. Mix the polyurathane and the hardener at a rate of 1 to 0,35. Mix it for 4 minutes slowly (to prevent incloser of air). Then you can apply it for 20 minutes. Setting will take 4 hours, but it needs 8 days before it can be used! One package contains 810 gram which cost about 50 euro. One bush needs about 15-20 gram so that will cost about 1,50 euro. Add the costs for the tubes.
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« Last Edit: February 01, 2009, 02:07:08 pm by Bart_Maztra »
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