Bike Forums

Bike Forums (https://www.bikeforums.net/forum.php)
-   Bicycle Mechanics (https://www.bikeforums.net/bicycle-mechanics/)
-   -   Spoke calc seems off (https://www.bikeforums.net/bicycle-mechanics/176681-spoke-calc-seems-off.html)

genericbikedude 02-25-06 01:51 PM

Spoke calc seems off
 
I'm getting ready to buy another rim and spokes to replace my back wheel on my rain bike, so I plugged the numbers into the spokecalc spreadsheet on SB's website, and I got 299.2 and 297.8. I haven't built a dished wheel in a while, and the difference seems awfully small. Am I, as the kids say, "trippin?"

Its a LX (FHM570), and a CR18.

Thanks!

cascade168 02-25-06 02:18 PM


Originally Posted by genericbikedude
I'm getting ready to buy another rim and spokes to replace my back wheel on my rain bike, so I plugged the numbers into the spokecalc spreadsheet on SB's website, and I got 299.2 and 297.8. I haven't built a dished wheel in a while, and the difference seems awfully small. Am I, as the kids say, "trippin?"

Its a LX (FHM570), and a CR18.

Thanks!

Rear wheels are frequently only 1 or 2mm different, from side to side spoke lenght. I'd say that the majority of wheels I have built have had a 2mm difference.

SpoCalc been very, very good to me ;-)

wrench 02-25-06 03:21 PM

With spokecalc always round down. So use 299 on left and 297 on drive side.

Rev.Chuck 02-25-06 04:13 PM

Sounds about right for a shimano hub and road wheel to me. Spoke difference seems about right.

dafydd 02-25-06 05:12 PM

i built the same combo, and while i don't remember the exact length, it was close enough i just used one length.

Al1943 02-26-06 11:40 AM


Originally Posted by wrench
With spokecalc always round down. So use 299 on left and 297 on drive side.

That's a good rule for other spoke length calculators also. Better to be slightly short than slightly long (when talking spokes ;) ).

Al

white lobster 02-26-06 02:51 PM


Originally Posted by Al1943
That's a good rule for other spoke length calculators also. Better to be slightly short than slightly long (when talking spokes ;) ).

Really? Depends on the rim and depends on the calculator, I guess. With double walled rims, there's absolutely nothing wrong with being a touch long, and I'd rather have a little bit of spoke sticking out of the top of the nipple than have threads showing.

Personally, I think that if the spoke calculator is written so that the spoke end comes out right at the bottom of the nipple slot (like Bike-alog's Spokemaster), I'm always going to round up.


All times are GMT -6. The time now is 08:06 AM.


Copyright © 2022 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.