- Check my spoke calculations – DT 240s / LB 29er
I’m not very experienced with using the online spoke calculators (last time I did this was back in the days of having a special TI calculator with an installed program for this).
Need to replace a couple of the drive side spokes on my wheels. They are 2013-era Light Bicycle 29er hookless rims (27W-24D) with an ERD of 592mm according to LB, on DT Swiss 240s 6-bolt hubs.
Does my calculation of 287 for both sides seem correct?Posted 8 months ago
Forgot to add – 32H, 3x lacing.Posted 8 months ago
Would it not just be easier to remove another and measure it? You need to de stress the wheel before bashing in new ones either way.Posted 8 months ago
It would be easier to do that! Unfortunately the wheels are on a spare bike at our holiday home, and I’m hoping to bring the correct spokes with me, replace, and ride over Christmas.Posted 8 months ago
You can pick your DT hubs from the drop down and manually enter the ERD. Looks like 287 is correct.Posted 8 months ago
It would be easier to do that! Unfortunately the wheels are on a spare bike at our holiday home
Ah ok, that makes more sense.Posted 8 months ago
IIRC my lb’s (26ers) were an odd length.
Got them factory built in China on pillar aero x spokes.
When I snapped a few due to a derailleur hitting them, I took it to the LBS but the correct size pillar spokes were going to take a while to get hold of, so I opted to get the wheel rebuilt on DT spokes which were more easily obtainable in the correct size.Posted 8 months ago
Took the opportunity to swap the nipples to black brass rather than ally at the same time.
How many spokes do you need altogether? You could bring a couple of longer and a couple of shorter ones just in case.Posted 8 months ago
Don’t forget that LB do not include the nipple head in their ERD. My calcs say 290mm for the rear wheel.Posted 8 months ago
Freespoke suggests 287mm too but that didn’t account for the erd difference @TrevorB mentions. What is LB short for?
I think Trevor B is right. Accounting for nipple heads ~2mm each by adding 4mm to the ERD would make it 289mm. I would still be tempted to take a couple of 287-8s and 290-1s just in case.Posted 8 months ago
LB is Light BicyclePosted 8 months ago
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