Originally Posted by
AS Collie
I didn't know that about the butted spokes, and I hadn't thought about the standard, so they're certainly two interesting points to consider.
I measure the same way you do (I even glue in the spokes so they don't move) and the ERD on the lenni calculator has always been the same as my measurement in the past. I haven't measured the Excellights myself, but a few online sources have the ERD as the same (600). The guy in the shop has a book with rim ERDs and the correct spoke/nipple combos and he still insisted I'd be ok ... but now I'm more unsure than ever!
I guess I could try to roll the online dice again ...
Unless the ERD includes a note as to the nipple type and size used - and the aiming point in the nipple - you can't trust the ERD.
You need a reference so you can determine what lies in the middle...for this particular task at hand...
=8-)
__________________
5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life