Looking for tach/speedo

nj1639 · Posted: June 20, 2009, 8:14 am Post subject: Looking for tach/speedo

Been having some questions about my speed readings so I had a work bud do a side ride along and give me different readings at different speeds. Seems I'm reading about 10 mph below actual speed, IF his readings are true.
So,
any '78 thru '83 accurate reading speedometers laying around out there looking for a new home?

yamaman · Posted: June 20, 2009, 8:19 am Post subject: Re: Looking for tach/speedo

I take it you've got a std front wheel?

nj1639 · Posted: June 20, 2009, 8:22 am Post subject: Re: Looking for tach/speedo

Yes, I believe so. Ya know, the Heritage Special bazillion spoke one. Ha!

nj1639 · Posted: June 20, 2009, 8:32 am Post subject: Re: Looking for tach/speedo

Hmm. Could there be an issue with the register in the front tire?

roar · Full Member Joined: Sep 15, 2008 Posts: 54

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xsleo · Posted: June 21, 2009, 6:35 pm Post subject: Re: Looking for tach/speedo

What I did to verify my speedo was to got a ten dollar bicycle speedo from wally world. Getting the measurements to set the speedo was a bit of hassle, but it told me i was off by about 2 mph at 60 mph. Close enough for me.
As far as tires, a taller tire will read slower than a shorter tire. A 1/2 " difference makes a 1 mile difference in the speedo reading. so if your tire is with in an inch of the stock hieght it will read pretty close.

nj1639 · Posted: June 21, 2009, 6:56 pm Post subject: Re: Looking for tach/speedo

Yeah, saw that post, good one, may just have to try it.

xsleo · Posted: June 21, 2009, 7:00 pm Post subject: Re: Looking for tach/speedo

Some just replace the stock one with the bicycle one. They sell one with a light in it so you can see it in the dark.

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