Rim Specs

[martin]

Anyone know of a good site that has rim specs - ie Effective Rim Diameters? for building wheels...

I basically want to know the ERD for a SUN SUB IV

[bikerRob]

Anyone know of a good site that has rim specs - ie Effective Rim Diameters? for building wheels...

I basically want to know the ERD for a SUN SUB IV
9/18/04 >> Wow...that's a tuffy. I think it's assumed you can measure it.(?) Do the rim manufacturers have a list of ERD? The only thing I could find (on the web) was a spoke length calculater. The one I looked at had a list of presets for different hubs and different rims. Maybe they will list yours(?) The link.. http://www.geocities.com/d_halem/wheel/wheel.html
Hope this helps

[martin]

9/18/04 >> Wow...that's a tuffy. I think it's assumed you can measure it.

I would, but I don't have the rim yet - I want to buy it (and spoke and nipples at the same time) Just want to make sure I get the right length...

[cloughja]

The published ERD for the Sub IV is 544mm. I just got a pair of them from JensonUSA and from a rough measurement that looks about right.

The spoke length calculator spreadsheet, "spocalc", has tons of data on rims and hubs. I'm attaching a copy of it.

[riderx]

The DT Swiss website has a calculator and database of rims. The Spocalc spreadsheet mentioned below is good too and contains a lot of rims and hubs.

[mark w]

This wont affect you with the Sun rims but I know the DT spoke calculator and spokecalc have (or had when I built mine) the wrong ERD for some Mavic tubeless rims, specifically the EX823/D3.1.

[Chopotter]

Yeah, and I ended up with many spokes of the wrong length because I was trying to build a wheel with X3.1 tubeless disc rims. Finally measured the ERD myself and got the right lengths. It was my first wheel, or I would have known to double-check the measurements first.

Otherwise, the spocalc spreadsheet is a great tool.

[martin]

..for the tips guys!

Time to build my SS rear wheel :D