From 0e31fbc14dfb92d2e2ccc912f31074f4219e12dd Mon Sep 17 00:00:00 2001 From: c3ma Date: Wed, 21 Feb 2024 20:22:29 +0100 Subject: [PATCH] Initial commit --- .gitignore | 2 ++ PinionChainProtection.scad | 42 +++++++++++++++++++++++++++++++++++ PinionRimProtectionNew.FCStd | Bin 0 -> 12465 bytes 3 files changed, 44 insertions(+) create mode 100644 .gitignore create mode 100644 PinionChainProtection.scad create mode 100644 PinionRimProtectionNew.FCStd diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..25112f3 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +PinionRimProtection.FCStd +*.FCBak diff --git a/PinionChainProtection.scad b/PinionChainProtection.scad new file mode 100644 index 0000000..0ce8c99 --- /dev/null +++ b/PinionChainProtection.scad @@ -0,0 +1,42 @@ +/* Pinion chain protection */ + +/* Gates rim parameter */ +DiameterFront=152; /* mm */ +DiameterBack=109; /* mm */ +CenterDistanceFrontBack=475; /* mm */ +GateRimWidth=13; /* mm */ +rimSpace=3; /* mm */ + +/* Pinon parameter */ +pinionTop=106; /* mm */ +pinionBottom=38; /* mm */ +pinonHeight=98; /* mm */ +pinionRotation=45; /* degrees */ +pinionWith=50; /* mm (dummy value, not used) */ +$fn=180; + +/* Bike Parameter */ +bikeRearHorizontal=48; +bikeRearRotation=99; +bikeRearOffset=70; + +module drawRim(dBack, dFront, width) { + hull() { + translate([CenterDistanceFrontBack/2, 0, 0]) cylinder(d=dFront, h = width, center = true); + translate([-CenterDistanceFrontBack/2, 0, 0]) cylinder(d=dBack, h = width, center = true); + } +} + +difference() { + drawRim(dBack=DiameterBack+rimSpace*2, + dFront=DiameterFront+rimSpace*2, + width=GateRimWidth+rimSpace*2); + union() { + translate([0,0, rimSpace/2]) drawRim(dBack=DiameterBack, + dFront=DiameterFront, + width=GateRimWidth+rimSpace*2); + translate([CenterDistanceFrontBack/2, 0, 0]) rotate([0, 0, pinionRotation]) translate([pinionBottom, 0, 0]) cube([pinionTop+pinionBottom, pinonHeight, pinionWith], center=true); + translate([bikeRearOffset, 0, 0]) rotate([0, bikeRearRotation, 0]) cylinder(d=bikeRearHorizontal, h=CenterDistanceFrontBack, center=true); + + } +} diff --git a/PinionRimProtectionNew.FCStd b/PinionRimProtectionNew.FCStd new file mode 100644 index 0000000000000000000000000000000000000000..9722a6aabebaa5376b2b1861eb6df83d8d0ca146 GIT binary patch literal 12465 zcmbW71ymf{mav=P?he7-g1fr~3-0c&!9Bs}8kSs?)c2!j9s%-g3z*7}Z?hE@)=E|wN2 zn#*>}Y)BsC$~HIAt3`1mPr`=ALqXdXW@$lWPV(Yf@-;%ssZkWD!Xy`-3$Goo3oHO% z5OHtxpc>PFLaqT~fbXbCwl$l_{qlHo!1XHh{3`>SYnjx}el+?>yghFNyK7reS^w?T zx)vAb^Rmmc6bCH#+3ZD-LshEfX$$^ie$6e{Axp5*@nL6Y1RgKx{Dj`#7}@Z-NRw9J z)GEU@F|T)qvlWO;q7>p?V-f1Y@07wIo)+5!a zjpJ!XLRgLS))F12b)0r z-u=>*jn~a|bXTjLQEi@cWS?1?jmBD@7(KQ4TuQX=L>z(Qs-iGM^OEF*U`9oh`yaIw z7wcnqp{K^DarFgvkGp3cr{H`e@UOTZY$T=5t zF>8lQ5q^V|h}&Fj##w8}4)QiKrlCRe^*(_&!wtxpk}g3KKQwWUHGbnLpN_S38nZRCM0s%zjFlpySNunxRRjgUHWLSf?_j2s z<5I43ImK4c4GbRa2aP1iq*><^b&8fs+^X7pWahCPW$IHJIPbIlW5}cq1Ewh+gxg3w 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