Canardweb Posted November 5, 2010 Report Share Posted November 5, 2010 (edited) Easy gus, I have searched for it, but it doesn't give any interesting answers. Basically, I want to build this hub: http://www.tartybikes.co.uk/product.php?product_id=10471&category_id=62 (yes it's 116 mm) to this rim: http://www.tartybikes.co.uk/product.php?product_id=10476&category_id=25. I won't order from tarty this time so I need to know what size of spokes I should get. I have tried the online calculators but can't get any results. Please help Edited November 5, 2010 by Canardweb Quote Link to comment Share on other sites More sharing options...
Revolver Posted November 5, 2010 Report Share Posted November 5, 2010 With an online calculator, you should be able to put in the ERD, spoke count and flange diameter and get an answer? Quote Link to comment Share on other sites More sharing options...
Canardweb Posted November 5, 2010 Author Report Share Posted November 5, 2010 With an online calculator, you should be able to put in the ERD, spoke count and flange diameter and get an answer? I have found 263! at least! Quote Link to comment Share on other sites More sharing options...
forteh Posted November 5, 2010 Report Share Posted November 5, 2010 Using the DTswiss calculator I get 252mm spokes using 3x and a wheel weight of 1145g when using DTswiss 2.0/1.8 butted spokes. This is assuming the hub pitch circle is 45mm rather than the diameter as stated on tarty, I think that should be cleared up on the website to avoid confusion. Quote Link to comment Share on other sites More sharing options...
Revolver Posted November 5, 2010 Report Share Posted November 5, 2010 Score, now hopefully it's worked properly and it'll all fit. Quote Link to comment Share on other sites More sharing options...
Canardweb Posted November 5, 2010 Author Report Share Posted November 5, 2010 Using the DTswiss calculator I get 252mm spokes using 3x and a wheel weight of 1145g when using DTswiss 2.0/1.8 butted spokes. This is assuming the hub pitch circle is 45mm rather than the diameter as stated on tarty, I think that should be cleared up on the website to avoid confusion. What is the difference then?No worries, I have found another solution, I will file the axle of my 135 mm rear ECHO TR fixed hub, so that way, I don't have to build anything up. Yes! Quote Link to comment Share on other sites More sharing options...
Matt Burrows Posted November 5, 2010 Report Share Posted November 5, 2010 Using the DTswiss calculator I get 252mm spokes using 3x How did you manage that? I got 263.3mm for both sides. If you have an Echo TR hub, you can just fit an axle from a 116mm hub instead. The hub shell is the same on both the 135 and 116mm hub. Quote Link to comment Share on other sites More sharing options...
forteh Posted November 5, 2010 Report Share Posted November 5, 2010 The pitch circle diameter is the distance between the diametrically opposite spoke holes, where as I would read the flange diameter as the outer diameter of the flange. Being an engineer means Im quite picky about stuff like that Quote Link to comment Share on other sites More sharing options...
Matt Burrows Posted November 5, 2010 Report Share Posted November 5, 2010 So you made up a number for the PCD? I think its pretty obvious that Tarty meant PCD and not flange diameter, the flanges look bigger than 45mm to me? Quote Link to comment Share on other sites More sharing options...
forteh Posted November 5, 2010 Report Share Posted November 5, 2010 (edited) How did you manage that? I got 263.3mm for both sides. If you have an Echo TR hub, you can just fit an axle from a 116mm hub instead. The hub shell is the same on both the 135 and 116mm hub. Im not entirely sure! Just done it again and ended up with 248mm spokes! Is the flange distance taken from the centreline of the wheel or from inside the dropouts? Thats the only dimension I can think Ive got wrong. What can I say, its friday afternoon, Ive just email a load of drawings off for client approval and forgot to actually attach the drawings :$ edit: I took the pcd as 45:) edit2: On the DT spoke calculator the centre to flange dimension is as I guessed from centreline of wheel to the flange (not dimension in from the dropout). Heres a screendump of the calculator, where have I gone wrong? Edited November 5, 2010 by forteh Quote Link to comment Share on other sites More sharing options...
Matt Burrows Posted November 5, 2010 Report Share Posted November 5, 2010 Diameter of spoke hole, usually around 2.6mm Quote Link to comment Share on other sites More sharing options...
forteh Posted November 5, 2010 Report Share Posted November 5, 2010 (edited) Diameter of spoke hole, usually around 2.6mm Surely thats factored into the spoke calculator isnt it? Otherwise it would be there as a variable? The PCD isnt dependant on the spoke hole diameter, either way that doesnt account for the 15mm discrepancy between your calc and mine edit: just run it through the wheelpro calculator and ended up at 263mm for 3x, now Im really confused! Edited November 5, 2010 by forteh Quote Link to comment Share on other sites More sharing options...
JD™ Posted November 5, 2010 Report Share Posted November 5, 2010 Surely thats factored into the spoke calculator isnt it? Otherwise it would be there as a variable? The PCD isnt dependant on the spoke hole diameter, either way that doesnt account for the 15mm discrepancy between your calc and mine edit: just run it through the wheelpro calculator and ended up at 263mm for 3x, now Im really confused! There is a variable for it, the first Spoke Hole box, with the symbol in front, is spoke diameter. Stick 2.6 in there and you're good to go, I think. Quote Link to comment Share on other sites More sharing options...
forteh Posted November 5, 2010 Report Share Posted November 5, 2010 There is a variable for it, the first Spoke Hole box, with the symbol in front, is spoke diameter. Stick 2.6 in there and you're good to go, I think. Yup Im a retard, I had put the spoke hole size as 32mm :$ For some reason I read that as number of spoke holes! As you were, nothing to see here Quote Link to comment Share on other sites More sharing options...
JD™ Posted November 5, 2010 Report Share Posted November 5, 2010 Yup Im a retard, I had put the spoke hole size as 32mm :$ For some reason I read that as number of spoke holes! As you were, nothing to see here Those spoke would be pretty tough to snap, especially if there were 32 of them! Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted November 5, 2010 Report Share Posted November 5, 2010 So you made up a number for the PCD? I think its pretty obvious that Tarty meant PCD and not flange diameter, the flanges look bigger than 45mm to me? ACTUAL flange diameter is of no use/consequence really. If you put PCD then I think it would confuse people, but yes, anally (engineeringy? ) speaking it is 'hub flange PCD'. Quote Link to comment Share on other sites More sharing options...
forteh Posted November 5, 2010 Report Share Posted November 5, 2010 Those spoke would be pretty tough to snap, especially if there were 32 of them! Monster strong wheel! ACTUAL flange diameter is of no use/consequence really. If you put PCD then I think it would confuse people, but yes, anally (engineeringy? ) speaking it is 'hub flange PCD'. Putting flange diameter when you mean PCD is the sort of thing that gets you in trouble if you put it on drawings, 14 years of draughting have taught me things like that Hasnt taught me to read online forms though:( Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted November 5, 2010 Report Share Posted November 5, 2010 Haha, yeah for sure. Depends who the 'client' is I guess... As long as you know about and can work with both it's all good Quote Link to comment Share on other sites More sharing options...
forteh Posted November 5, 2010 Report Share Posted November 5, 2010 Haha, yeah for sure. Depends who the 'client' is I guess... As long as you know about and can work with both it's all good Yeah, the works manager would moan at me if I just scrapped a job because I mislabelled a flange diameter I always cheat anyways and get you lot to spec my spoke lengths Quote Link to comment Share on other sites More sharing options...
J.KYDD Posted November 5, 2010 Report Share Posted November 5, 2010 I use the wheelpro spoke calculator. If you're still unsure then just ring Tarty. I got two differing results from wheelpro and DT swiss so rang Tarty, turned out wheelpro was correct Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted November 5, 2010 Report Share Posted November 5, 2010 turned out wheelpro was correct Hmm, which wheel exactly? What did Wheelpro say and what did we reckon? Quote Link to comment Share on other sites More sharing options...
N.Wood Posted November 6, 2010 Report Share Posted November 6, 2010 Hmm, which wheel exactly? What did Wheelpro say and what did we reckon? I think he's saying Wheelpro and DT Swiss gave differing numbers and you confirmed it was infact Wheelpro who were correct. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted November 8, 2010 Report Share Posted November 8, 2010 Aah, now that makes sense... damn my crap brain... Quote Link to comment Share on other sites More sharing options...
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