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So it was a little over 4 years since I have launched the app and I've received a steady stream of hub and rim submissions over the years thanks to the users of the app.
The page was starting to look a little dated and I was getting a little embarrassed of it so ... I've redesigned the thing: http://lenni.info/edd/
Not only does it no longer look hideous but I've also cleaned up the codebase enormously. It's amazing what you learn in a few years of making software.
I have a favour to ask of you: If you notice a problem when using the app, would you be able to send me feedback either here, on the comment boxes on the site or email to leonard.ehrenfried@gmail.com?
Thanks a lot!
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You're right in the middle, but yes 280 is fine.
The on one shop says front and rear have the same measurements: http://www.on-one.co.uk/i/q/HUDC32F/dia-compe-gran-compe-front-hub
Obviously you'd have to take their word for it. Doesn't sound unreasonable though.
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What hubs did you use? I built a wheel with Goldtec hubs and DP18s and the length was just right.
I emailed Damon Rinard, the author of the original spreadsheet, and asked about the thing in brackets. He emailed me the following:
For wheel building, there are two important (and often confused) rim diameters: ERD, effecive rim diameter, and NSD, nipple seat diameter.
ERD is the diameter through the ends of ideal-length spokes. It's measured on the theoretical spoke end, not on the rim.
NSD, nipple seat diameter, is the diameter of the circle through all the nipple seats. It's measured on the rim.
Typically, with normal nipples the spoke extends radially outward a little bit beyond the nipple seat, and into the spoke head.
Spocalc calcualtes spoke length and wants the diameter of the ends of ideal spokes, so NSD isn't the dimension spocalc uses.
The comment in the database means I've added 3 mm to Mavic's nipple seat diameter to approximate typical (DTSwiss 14 mm) nipples. So for that rim there might be some adjustment needed if using other nipples.
hope this helps,
Damon Rinard
I still wonder though why he added the 3mm to some but not all rims though.
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There are over thousand hubs in the database, most of which are from Damon Rinards original spreadsheet. I honestly can't tell you if it is the hub you are looking at, although on first glance it sounds about right.
Maybe someone else can verify these measurements for the picture hub:
Campagnolo C-Record low flange, rear
Right flange ø: 44.5
Left flange ø: 44.5
Centre to right flange: 21
Centre to left flange: 36
Spoke hole ø: 2.3 -
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I did some portraits of my pals for a project last year here:
http://cargocollective.com/albieclark#10899/Class-of-2009
(I am, to my shame, #3, that's why I am behind the camera most of the time)
I'm sure they wouldn't mind being immortalized. Or laughed at.*
*Image credit would be nice.
May I ask what those glasses are you're wearing?
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Thanks. They also ask which length: http://www.mountainbikecomponents.co.uk/items.asp?CategoryID=150&Name=M6+Screws
I suppose I will have to take the good one out and measure tonight. Or does anybody know at the top of their head?
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Right I'm about to buy stuff from BETD's website and also need rear allen bolts for my Goldtecs. Which size do I need?
http://www.mountainbikecomponents.co.uk/result.asp?CategoryID=376&Name=Fasteners
They have M5, M6 & M8.
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Oh @Skülly, well remembered! I am well and now living in Berlin.
I miss the LFGSS bike tours from years ago!