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Author Topic: Speedo needle install?  (Read 224 times)
nightkid
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« on: August 08, 2017, 06:27:33 PM »

Hi all
I have a broken speedo needle on the bike.  Got a replacement one; does it matter at which angle I press it in, maybe a datum angle to align the needle before pressing it in?  I press it in without much thought first time round and it doesn't seem to be registering any speed until I guess I hit around 20-30mph on the bike.  Is it just a matter of offsetting it by that much when I reinstall the needle or is something fundamental wrong? Nothing in the service manual about removing the needle and reinstalling it. 

Thanks in advance for any advice.
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spacetiger
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« Reply #1 on: August 08, 2017, 07:21:26 PM »

I have not done this on a CB-1.  Did it once on a CB700SC, the needle disintegrated it was that fragile.  I used a 1990's needle and it pressed straight on with no issues.

Carefully try just moving the needle by hand and see if there is any free play.
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a_morti
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« Reply #2 on: August 09, 2017, 11:28:55 AM »

Trick is to flip the needle up over the stop before you remove it, that will give you your datum. Now, just set it to minus 25mph, flip it back over the stop, then go ride to test it.
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nightkid
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« Reply #3 on: August 09, 2017, 01:25:17 PM »

Ok I'll give that a try.  Think I need someone to ride ahead of me with a set speed to see how accurate mine is.  Not sure how accurate GPS on your phone is these days.
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a_morti
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« Reply #4 on: August 09, 2017, 02:26:44 PM »

Phone GPS is pretty accurate. It has a tiny lag but if you can get yourself on a nice long straight road at a steady speed that's not a problem.
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