Crystalyte wheelbuilding dimensions

Does anyone have official Crystalyte 5304 rear hub w/disc wheelbuilding dimensions? It looks like the hub is symmetric. There is a nice measured hub on ebikes.ca, and it looks like I could deduce the numbers from it, but I am just checking. I would need center to flange and spoke hole diameter.

It looks like spoke hole diameter is 240mm, and flange to center is 22.5, based on the diagram, the same left and right. Does that sound about right?

Depends on wich one you got.. axle milled for single speed.. or motor previously a front and convrted to rear..

Some of the motors have the spoke flange shifted to help with the dishing factor...

answer = it all depends on wich motor you got.

I am about to try to teach myself how to build a bicycle wheel.

Got this motor: Crystalyte 406 with single speed and disk brake.


Local bike shop guy suggest this rim: sun-ringle.com MTB Rims: Freeride/ DH: MTX 33

Is this a good rim to go with these tires?
wtb.com WeirWolf 2.3 Written on tire is 26x52/58 to fit hook bead rim (52 - 559) don't know what that all means?

Now we got to figure what length spokes?
Local bike shop guy likes this Online Spoke Length Calculator: http://www.bikeschool.com/spokes/
View attachment 2
How do you figure Hub Center to Flange Center? I read and not sure if I comprehend?

O.L.D = 135mm
Left Locknut to Left flange = 43.5mm
Right Locknut to Right Flange = 47.5mm
Flange Width = 44mm

Is the answer 5 ?????

Cross Pattern (3 cross, 4 cross, etc): What pattern would be best?

Go here to see motor drawing: http://ebike.ca/store/diagrams/M400F.pdf

so many variables, are the hub flanges centered or skewed to one side, are the holes in the rim all on the centerline or are half ofset to one side and the rest to the other side?

too much calculation, too much room for misinterpretation. too many instructions of how to interpret the instructions for the calculator.

i like the Thomas Edison approach. measure it directly. first you clear off the kitchen table. cut some scrap blocks of 2 by 4 or whatever you have lying around . use those blocks to support the motor on the table with the axle vertical. cut a few more blocks and use those to support the rim at the right height. the idea is to mock up the finished wheel horizontaly on the table.

now thread some twine from the spoke holes on the rim to the corresponding holes on the hub. use a felt tip pen to mark the length of the spokes. measure the marked lenght of twine against a tape measure.

repeat the twine thing a few places around the rim. just to make sure your alignment and centeing are correct. an average of theese will get you close enough.

remember to order spokes a little longer to compensate for the thickness or the rim and the head of the spoke nipple

yes it will take a while to set up. but likely it will be less time than figuring out how to use the calculator. personally i find i have more confidence in this method.

rick

explanation of the "Thomas Edison" thing. story goes that when Edison hired a new engineer he would test him by asking the engineer to find the volume of the glass envelope used in the production of one of his light bulbs. usually the engineer would run off and commence measuring dimensions and doing a bunch of calculus. after a day or two he would get back to edison with his result. Edison would take the bulb, fill it with water and then pour the water into a graduated cylinder to measure the volume, usually correcting the engineers answer.

marty said:

I am about to try to teach myself how to build a bicycle wheel.

Got this motor: Crystalyte 406 with single speed and disk brake.


Local bike shop guy suggest this rim: sun-ringle.com MTB Rims: Freeride/ DH: MTX 33

Is this a good rim to go with these tires?
wtb.com WeirWolf 2.3 Written on tire is 26x52/58 to fit hook bead rim (52 - 559) don't know what that all means?

Now we got to figure what length spokes?
Local bike shop guy likes this Online Spoke Length Calculator: http://www.bikeschool.com/spokes/
View attachment 2
How do you figure Hub Center to Flange Center? I read and not sure if I comprehend?
View attachment 1
O.L.D = 135mm
Left Locknut to Left flange = 43.5mm
Right Locknut to Right Flange = 47.5mm
Flange Width = 44mm

Is the answer 5 ?????

Cross Pattern (3 cross, 4 cross, etc): What pattern would be best?

Click to expand...

I built a rear wheel with that exact rim and Love it!


Mine was a 7 speed, so there was some dish, meaning I used 182mm spokes on one side, and 185 on the other. 185mm had worked on both sides before I had to add the dish. I went with single cross, since the distance between the hub and rim is short. 3 cross would have put the spokes at an extreem angle.

I also painted the hub black. it's a vanity thing.

I'm using 2.5 inch Hookworms, which seem a good match to the rim.



As for that calculator, I don't trust it. it told me I need 192mm, and has been wrong on other wheels. I let the bike shop measure now, they physicaly measure the wheel with a couple spokes in it.

You guys don't like spoke calculators :? I got great faith in math. Did you hear the story about the guy who mixed up millimeters and inches?

Finally figured out what number goes in the Hub Center to Flange Center BOX. Now I understand why the calculator needs this number. Triangle has base and height. Use math to figure 3rd side. This picture made it all clear to me. Click on Help Button. DUH :?
View attachment ctf.gif
Like this Excel spread sheet. I've never had Excel. Long Word Perfect / Quattro Pro story. Microsoft seems to think I need to go to the computer store and buy a newer and newer versions of office. Just got http://www.openoffice.org Its free and seems to work great.

Go here http://www.sheldonbrown.com/rinard/spocalc.htm and download spocalc.xls

Now I need to buy spokes. Local bike shop guy like DT champion, 2.0 mm, Black with DT standard brass Nipples, Silver color.
WHAT LENGTH NIPPLES SHOULD I GET? 12 mm, 14 mm, or 16 mm?
Not seeing any information on this on both Rim web site and Spoke web site.
http://www.sun-ringle.com MTB Rims: Freeride/ DH: MTX 33
http://www.dtswiss.com/Products/Components2009/Nipples.aspx

Could also get larger gauge spokes but don't know if they will fit in rims?
12 gauge is 2.7 mm
13 gauge is 2.3 mm
14 gauge is 2.0 mm
15 gauge is 1.8 mm
16 gauge is 1.6 mm

Assume bigger spokes will be stronger?

marty said:

You guys don't like spoke calculators :? I got great faith in math. Did you hear the story about the guy who mixed up millimeters and inches?

<snip>

Click to expand...

some time in the 80's a french canadian ground crew mixed up litres and gallons and loaded too little fuel into a 737. the american pilots ended up doing an emergeny landing at some private air strip outside of Calgary Alberta. fortunatetly for them it used to be an airforce base until it was shut in the 70's the runways were long enough.

sorry i can't remeber the exact details but it is a true story.

I've had good luck with that spokcalc on several wheels! It seems to work for me!
otherDoc