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#700 EDGEVIEW HOW TO#

We generally recommend elbows outside except in cases where you have a small rim diameter or need to facilitate dishing by having all left elbows in, and all right elbows out. With the elbow outside, you get better triangulation from the spokes and a slightly longer spoke length as well.

Left Elbow: This determines if the left spokes have their elbow inside the flange or outside the flange.

If you have a motor with paired spoke holes, then a 0 cross pattern still has a spoke angle for transmitting torque, and there is no need for even single crossing the spokes. Small geared hubs can be laced into large diameter (>26") rims with a double cross pattern OK, and large direct drive motors in small (<=20") rims usually can only be laced radially with 0 cross. There is no point at all in having 2 or more crosses with the large flange diameters of most hub motors, and doing so will usually result the spoke entering the rim at a very difficult angle.

Cross Pattern: Most hub motors are laced with a single cross pattern.

However, wide rims (>30mm) will almost alway have a left and right spoke offset.Įven with a given rim and hub motor, there are still several ways you can go about lacing up the wheel, many of which will affect the required spoke length.

Rim Width: This is the outer width of the rim and only affects the way that the rim is drawn in the edge view diagram, it is not involved in the spoke length calculations.

If the rim holes are not staggered, then it should be left at 0mm.

Right Offset: This it the distance from the center of the rim to the right side spoke holes.

If the rim holes are all in a row, then it would be left at 0mm

Left Offset: This is the distance from the center of the rim to the left side spoke holes.

#700 EDGEVIEW HOW TO#

YPedal had a decent photo page illustrating how to measure rim ERD yourself. Generally speaking that is at the back of where the nipple fits in the rim. It is the diameter from where the very end of the spoke should sit in the laced up wheel. ERD: This is the most essential measurement for determining the spoke length required for a particular rim.It is only used for drawing purposes, and does not affect the spoke length calculations. Nominal Diameter: This is just the nominal bike wheel size (26", 24", 700c etc).There is also comprehensive table of rim data at the FreeSpoke website. If you are using a 3rd party rim, then usually there is no problem looking up the ERD and offset specifications from the manufacturer or measuring them yourself. The dropdown menu has all the rim types that we stock here at GRIN. Paired Holes: Put a check in the "Paired Holes" checkbox if the motor does not have a uniform hole pattern but instead groups the spoke holes in pairs of 2, and then type in the measured distance between adjacent paired holes.Some motors are drilled out to >3mm for 12g spokes, while hubs meant for just 14g spokes are usually ~2.5mm. Hole Diam: This is the diameter of the spoke hole in the hub flange.Axle Length: This only affects the length of the axle that is drawn in the edge view diagram for visual reference, it does not enter into the spoke length calculations.This calculator assumes that the number of holes in the rim matches the number on set here for the hub. That's a bit unfortunate, since most conventional rims these days have 32 holes. # Spokes: Almost all hub motors are drilled for 36 spokes.Front hubs with disk brakes often have their flanges further to the right to leave room for the disk caliper, and so have a positive dishing offset. Rear motors often have the flanges shifted to the left to allow space for the cogset, and require a negative dishing offset here to account for that. If it is zero, then the hub is drawn with the flanges centered on the axle and requires no dishing.

Dishing Offset: This is the distance between the midpoint between the spoke flanges and the midpoint of the axle.Flange Spacing: This is the distance between the left and right spoke flanges, as measured from center to center.It is the distance measured from the center of one hole to the center of the hole farthest away on the same side of the motor. Flange Diameter: This is the diameter of the circle of spoke holes on the motor flange.If your motor is not listed, or you aren't totally sure, then you can easily measure all of the necessary parameters with vernier calipers. The drop-down menu at the top has the parameters for a large number of popular hub motors, so if your motor is on this list then you should be set.