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Old 12-04-2009, 04:09 PM   #102 (permalink)
orange4boy
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Join Date: Aug 2008
Location: The Wet Coast, Kanuckistan.
Posts: 1,275

The Golden Egg - '93 Toyota Previa DX
90 day: 31.91 mpg (US)

Chewie - '03 Toyota Prius
90 day: 57 mpg (US)

The Spaceship - '00 Honda Insight
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Insurance adjuster comes today to tell me that it's basically a total loss.
I missed that. What's up with your Cara? Everyone O.K?

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but I guess those things have to have some use, even if they're worthless for much else...
I call it pre-cycling© Saving the planet by intercepting products intended for a life of evil and using them for good. These discs were candle platters. Toxic emissions from scented candles
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Use of scented candles may contribute significant quantities of pollutants to the indoor environment, especially soot, benzene and lead.
Hippies and crystally types beware.

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Cover but don't touch? How much gap? How is balancing handled?

A materials question, is there galvanic action between the steel platter and the alloy wheels?
1) Gap yet to be determined but my guess is about 5mm should be o.k for most deflections. The gap will also allow brake dust to be blown away and some cooling which is rarely needed in Prii. I will be able to see if they are touching and add spacers if needed. There is a risk of impact in severe deflections but I'm willing to risk that. they will just bend a bit. If it does become a problem, I will just plasma cut the discs smaller and reduce the standoff. My tires are nearing the end of their useful life in any event. (B381s are on my wish list)

2) Balancing will be handled by very careful layout. These discs are made from sheet stainless so are extremely uniform in thickness, unlike a tire, so they should be very balanced if properly aligned with rim centre.

3) The aluminium rim is bolted to an iron rotor. No galvanic action there AFAIK. More issues with brake dust than anything. I could use delrin washers to isolate the discs if there are problems.

Prof. Bob, Distinguished Professor of Priusology, makes sure his students do their homework.
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Last edited by orange4boy; 12-04-2009 at 07:04 PM..
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