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Aerodynamics / Re: Drag of Open Windows
« Last post by aircap on May 27, 2024, 12:35:32 AM »Years ago I was headed down I-40 around 80MPH, and the kids opened both back windows at the same time. The car immediately slowed down to 75.
Recent Posts
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Bonneville General Chat / Re: costella nebulous theorem IV
« Last post by Tonerjockey on May 26, 2024, 09:44:42 PM »I don't know if 5050 caused the 20 degree lean capability rule but that's why I went with a sidecar on 1227B.
Flat, low bottom.
Upon review of that rule it looks like it is streamliner specific. 1227B is not a streamliner. oh well. SC makes a little and low vehicle more stable (maybe)
Flat, low bottom.
Upon review of that rule it looks like it is streamliner specific. 1227B is not a streamliner. oh well. SC makes a little and low vehicle more stable (maybe)
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Bonneville General Chat / Re: costella nebulous theorem IV
« Last post by tortoise on May 26, 2024, 07:21:59 PM »I'd bet on it being the lowest aero drag machine ever on the salt. It led, if I remember, to a rule change for motorcycles having to be able to lean a certain angle. Am I right about that?
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Bonneville General Chat / Re: costella nebulous theorem IV
« Last post by Tonerjockey on May 26, 2024, 07:05:33 PM »Here's another shot that shows length a little better.
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Bonneville General Chat / Re: costella nebulous theorem IV
« Last post by Stan Back on May 26, 2024, 02:43:20 PM »I thought the idea was "To Go Under the Air" rather than thru it. Made sense to me.
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Technical Discussion / Re: Selecting a synchronous belt
« Last post by Beltguy on May 26, 2024, 01:00:44 PM »Jack, I only had time to briefly look at the Mitsuboshi 1440 H8M belt, but it appears to be a pretty standard HTD (round tooth) profile and not all that special of materials. I will do some more research in the next day or two. Trying to get a bunch of stuff done before back surgery in a three weeks.
That part of the timing belt industry is pretty complicated. There are several 8mm and 14mm tooth profiles by various manufacturers some of which will interchange and some will not. For our purposes, we can break it down into the HTD (round tooth that has the shape of a "U" and a couple of "gear tooth" looking profiles. I am pretty sure you have the "U" shaped tooth. That tooth profile was common in drag racing while the gear shaped profiles were limited (several years ago) to the Gates PolyChain belt. I suspect I will end up compiling some drawings and downloads into a document I will post here.
BTW, I am starting to read you old inline four thread. Looks like fun reading.
Jim
That part of the timing belt industry is pretty complicated. There are several 8mm and 14mm tooth profiles by various manufacturers some of which will interchange and some will not. For our purposes, we can break it down into the HTD (round tooth that has the shape of a "U" and a couple of "gear tooth" looking profiles. I am pretty sure you have the "U" shaped tooth. That tooth profile was common in drag racing while the gear shaped profiles were limited (several years ago) to the Gates PolyChain belt. I suspect I will end up compiling some drawings and downloads into a document I will post here.
BTW, I am starting to read you old inline four thread. Looks like fun reading.
Jim
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Bonneville General Chat / Re: costella nebulous theorem IV
« Last post by Tonerjockey on May 26, 2024, 12:03:48 PM »Here's another shot of 5050
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Bonneville General Chat / Re: costella nebulous theorem IV
« Last post by Tonerjockey on May 26, 2024, 12:01:17 PM »Here's a shot of 5050 during the build.
Jack lived (worked) a couple miles from my place. He taught me to fiberglass and to not let the wind see ya.
Jack lived (worked) a couple miles from my place. He taught me to fiberglass and to not let the wind see ya.
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Technical Discussion / Re: Selecting a synchronous belt
« Last post by Jack Gifford on May 26, 2024, 01:27:27 AM »Jim- Two belts that were run on my sprockets:
Mitsuboshi 1440 H8M
Bestorq 1520-8M
Mitsuboshi 1440 H8M
Bestorq 1520-8M
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Bonneville General Chat / Re: costella nebulous theorem IV
« Last post by slowalex on May 26, 2024, 01:03:45 AM »Some of these pages on this site no longer appears to be active:
http://www.yacoucci.com/gallery/album85/aug15_26
But the site has been archived and you can click back and forward through the pages and view some different capture dates.
https://web.archive.org/web/20060716122035/http://www.yacoucci.com:80/gallery/album85/aug15_26
It looks like some pages might be missing here, and perhaps not enough detail for you, but you should be able to find pictures like this one:
http://www.yacoucci.com/gallery/album85/aug15_26
But the site has been archived and you can click back and forward through the pages and view some different capture dates.
https://web.archive.org/web/20060716122035/http://www.yacoucci.com:80/gallery/album85/aug15_26
It looks like some pages might be missing here, and perhaps not enough detail for you, but you should be able to find pictures like this one: