Spoke pattern/length

ddraver
ddraver Posts: 26,697
edited August 2011 in MTB workshop & tech
Hi all

I'm trying to replace a spoke (Mavic XM819 on Hope Pro II) and an estimation with a 2 cross pattern gave me 252mm which is just too short to enter the nipple (!!) (I used - http://www.prowheelbuilder.com/spokelengthcalculator/)

Trying a 3 cross pattern gives me 8 more mm but I can only see 2 spoke crosses on the wheel

I'm sure this is stupid noob question but WTF?

Thanks
DaveK
We're in danger of confusing passion with incompetence
- @ddraver

Comments

  • supersonic
    supersonic Posts: 82,708
    Is there a small 'cross' right next to the spoke elbow as it exits the hub flange? Many miss this one.

    Make sure you put in the number of spokes too ;-)
  • ddraver
    ddraver Posts: 26,697
    supersonic wrote:
    Is there a small 'cross' right next to the spoke elbow as it exits the hub flange? Many miss this one.


    Oooooohhhhh yyyeeeeaaaahhhh :?

    ahem, thanks Sonic :oops:
    We're in danger of confusing passion with incompetence
    - @ddraver
  • ddraver
    ddraver Posts: 26,697
    So I actually need an average of 161mm (range something like 160.7 to 162.3) - is it best to go 1mm shorter or longer?
    We're in danger of confusing passion with incompetence
    - @ddraver
  • nicklouse
    nicklouse Posts: 50,675
    what length nipples are you going to use?

    I generally go shorter.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • supersonic
    supersonic Posts: 82,708
    161 sounds 100 too short!
  • nicklouse
    nicklouse Posts: 50,675
    Mmm and 261 is not the average.

    258-260 for a front 32 spokes

    259 for the rear.

    and 256ish for as 36 spoke build 255/256 ish


    :wink:
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • ddraver
    ddraver Posts: 26,697
    Sonic is right, 261mm

    Nick i still get about 261 with an XM819 Disc and a pro ii hub, 32 spoken, 3 cross??
    We're in danger of confusing passion with incompetence
    - @ddraver
  • nicklouse
    nicklouse Posts: 50,675
    front or rear? and what hub dims. are you using? your own or the ones in the program?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • ddraver
    ddraver Posts: 26,697
    Program...

    Front and rear seem to give similar results, which is sending up a little red flag I admit!
    We're in danger of confusing passion with incompetence
    - @ddraver
  • nicklouse
    nicklouse Posts: 50,675
    similar lengths front and rear is not odd, in fact it is quite common. but what is odd is your 261mm

    on a front I get results

    Left spoke length: 258.3

    Right spoke length: 260.1
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • ddraver
    ddraver Posts: 26,697
    WTF? I get 260.7 and 262.2
    We're in danger of confusing passion with incompetence
    - @ddraver