Has anyone else noticed how difficult it is to get hold of rim ERDs for wheelbuilding?

Maybe I’ve just been exposed to it a lot having built all my own wheels and done a few wheelbuilding classes, but it seems the best source is generally second hand information from other company’s websites (i.e. DT/spocalc/wheelpro).

How difficult would it be for a rim manufacturer just to publish a discrete little table of ERDs for their rims? I’ve resorted to emailing WTB for info on their laserdisc trail rims but am not holding my breath…

They probably have poor quality control, and expect wheelbuilders to measure to allow for manufacturing discrepancies. Probably a good sign of a rim to avoid.

Ah… well that certainly makes sense, although I hadn’t thought of WTB rims as being particularly poor.

I wondered if perhaps they didn’t want amateur wheelbuilders building their rims into wheels as failures might reflect poorly on the rim manufacturer (I noticed a review on CRC stating the Laserdisc rims were rubbish because the wheels kept buckling etc.).

Reason enough I suppose to measure them myself, bit of string with two spoke nipples on it? 8)

My WTB rims had the ERD as part of the decal on the rim 😕

Got this?
http://www.wtb-bike.eu/data/support/WTB_RimsInstV16-EN.pdf
I just logged a request for you at Hotlines as well. Answers may be forthcoming in a few hours.

Can you find a pic on the web and zoom in. I thought WTB always printed it with their graphics, they have on my older Speeddisk AMs anyway.

Or you could just measure the rims, it’s hardly rocket science.

They probably have poor quality control, and expect wheelbuilders to measure to allow for manufacturing discrepancies. Probably a good sign of a rim to avoid.

Flim-flam ™!

13FM just measure them, or even compare side by side with a rim you know. It’s not rocket science.

Just tried my own advice on CRC, can’t read it but the text says ERD 542.(2011 rim)

Just confirmed 542.

Haha! Don’t I feel silly. 😳

The reason I wasn’t measuring them is because I don’t have them yet, I was preparing to order a job lot from CRC (spokes, hubs, rims) so wanted to know in advance.

I’d emailed hotlines, but based on past experience wasn’t really expecting a response…

I didn’t realise WTB printed ERDs ON the rims, I couldn’t find any info in the document TBC linked above. Midlifecrashes, I was guessing 542 based on the most similar rim from 2002 on the spocalc calculator.

TBC, can you order those rims in? (the TSC ones). What sort of price/lead time would you expect?

Cheers all!

Ian – Monday for you, £31 each.

CRC will do the measuring for you if you are ordering the rims and hubs off them

Wahay! TBC! TBC! etc.

Suitably chastised, at least now I know where to look in future.

How difficult would it be for a rim manufacturer just to publish a discrete little table of ERDs for on their rims?

fixed it for you 😉

yes yes, very good 8)

I have the same problem with a Ritchey Pro Girder 28 Hole. Who imports them?