Tachometer for the scooter
Moderator: Moderator
Tachometer for the scooter
Hello all,
Been looking at tachs to put on the Spree. Came across a used snowmobile tach on ebay. Figured it was from a two stroke and cheap so why not give it a try. Tried various ways to hook it into the ignition system with no luck. Then it dawned on me that the lighting and battery charging coils produce A.C. . I hooked the tach up to the lighting coil and it works great. The calibration was all off so I opened it up and found an adjustment pot on the inside. Calibrated it against my clip on tach. Built a little bracket to mount it on the front panel below the handle bars near the turn signal. So now I have a nice looking 10,000 rpm tach to help with modifications and tuning.
keithw
Been looking at tachs to put on the Spree. Came across a used snowmobile tach on ebay. Figured it was from a two stroke and cheap so why not give it a try. Tried various ways to hook it into the ignition system with no luck. Then it dawned on me that the lighting and battery charging coils produce A.C. . I hooked the tach up to the lighting coil and it works great. The calibration was all off so I opened it up and found an adjustment pot on the inside. Calibrated it against my clip on tach. Built a little bracket to mount it on the front panel below the handle bars near the turn signal. So now I have a nice looking 10,000 rpm tach to help with modifications and tuning.
keithw
Honda Pal (Speed-o-scooter) JDM Spree with varator trans.
Honda Spree, 1985.
Another Honda Pal
Let's give it a try, how hard could it be?
Honda Spree, 1985.
Another Honda Pal
Let's give it a try, how hard could it be?
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- CBR1000RR
- Posts: 4957
- Joined: Sun Apr 16, 2006 11:51 am
- Location: Southern Michigan
I think you missed the "cheap" part.
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I have seen an 11k snowmobile tach and there might be 12s out there. As Noiseguy pointed out the key word was cheap. The Spree factory redline is 8k rpm. A 10k tach covers all but the real hard core tuners.
The other option is to recalibrate it for higher rpms. You can put your own scale on it and adjust for whatever you feel you need.
keithw
The other option is to recalibrate it for higher rpms. You can put your own scale on it and adjust for whatever you feel you need.
keithw
Honda Pal (Speed-o-scooter) JDM Spree with varator trans.
Honda Spree, 1985.
Another Honda Pal
Let's give it a try, how hard could it be?
Honda Spree, 1985.
Another Honda Pal
Let's give it a try, how hard could it be?
-
- CBR1000RR
- Posts: 4957
- Joined: Sun Apr 16, 2006 11:51 am
- Location: Southern Michigan
I hear they are laggy and update slow.tru72 wrote:a really good tach for tuning is called a tiny tach.. about 75 bucks..you can rev the crap out of it. its digital, very small, easy 1 wire hook up
aloha
D
I am not a mechanic, nor do I play one on TV. Actually my advice is probably worth slightly less than what you pay to view it.
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- Spree
- Posts: 240
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I prefer something like this. Inexpensive, easy install and works.
http://www.cabelas.com/prod-1/0015240015383a.shtml
http://www.cabelas.com/prod-1/0015240015383a.shtml
Bear 45/70
'83 Aero 80 X 3
'84 Aero 80 X 3
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'84 Aero 125
'84 Aero 125 X 2
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'85 Spree
'83 Aero 80 X 3
'84 Aero 80 X 3
'85 Aero 80
'84 Aero 125 X 2
'84 Aero 125
'84 Aero 125 X 2
'85 Aero 50
'85 Spree
laggy and slow huh? you heard?
maybe you should buy one and test it for us? The small engine repair shop uses them here and it sure doesnt seem laggy and slow to me. Since you "heard" it is, you might go and watch that guys youtube vids dio speed demon. He has a vid of it ...
http://www.tinytach.com/tinytach/commercial.php
http://www.youtube.com/watch?v=AOYvwf1Q-qw
maybe you should buy one and test it for us? The small engine repair shop uses them here and it sure doesnt seem laggy and slow to me. Since you "heard" it is, you might go and watch that guys youtube vids dio speed demon. He has a vid of it ...
http://www.tinytach.com/tinytach/commercial.php
http://www.youtube.com/watch?v=AOYvwf1Q-qw
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- Goped
- Posts: 80
- Joined: Sun Sep 14, 2008 10:15 pm
- Location: North Central Indiana
I looked at the tinytach but it only goes up to 9,000 rpm. I have run my engine to 11,000 and the Spree is currently doing 9,500. That and the analog gauge with the needle waving at you is just cool. So far I've only messed with one but the snowmobile tach was cheap and not that hard to get working.
keithw
keithw
Honda Pal (Speed-o-scooter) JDM Spree with varator trans.
Honda Spree, 1985.
Another Honda Pal
Let's give it a try, how hard could it be?
Honda Spree, 1985.
Another Honda Pal
Let's give it a try, how hard could it be?
-
- Goped
- Posts: 80
- Joined: Sun Sep 14, 2008 10:15 pm
- Location: North Central Indiana