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10-29-2012, 11:50 PM
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#1 (permalink)
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IronButt
Join Date: Oct 2012
Location: Oregon
Posts: 223
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FXR Speedo Broken
Is there any reason an 86 speedo won't work on an 85? They do have different part numbers...
__________________
1972 Superglide FX: Rebuilt, Super E, Drag pipes (FOR SALE PM ME)
2005 Sportster 1200: Thunderheader, SE ICM, SE carb upgrades, pretty stuff
1985 FXRS-SP: (looks VERY different than the pic. More black now) Dyna 2000 ICM, Twin Tec II Single Fire, Mikuni 42mm, S&S intake, Progressive springs, need money for Thunderheader and mid-controls! Have lot's to trade and $ if you have one for my bike!
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10-30-2012, 10:27 AM
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#2 (permalink)
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IronButt
Join Date: Mar 2011
Location: PA
Posts: 1,732
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As long as the mount type is the same, it should be no issue to swap them. AFAIK the difference is the 85mph requirement.
__________________
"All mankind is divided into three classes: those that are immovable, those that are movable, and those that move."
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10-30-2012, 12:40 PM
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#3 (permalink)
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IronButt
Join Date: Oct 2012
Location: Oregon
Posts: 223
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It seems to have th same mount requirements. Just poking around on ebay and all of them are do say "for 86-94," or 84-85.
What is this 85mph speed requirement all about?
Nothing to do with different gear ratio so it will be off?
__________________
1972 Superglide FX: Rebuilt, Super E, Drag pipes (FOR SALE PM ME)
2005 Sportster 1200: Thunderheader, SE ICM, SE carb upgrades, pretty stuff
1985 FXRS-SP: (looks VERY different than the pic. More black now) Dyna 2000 ICM, Twin Tec II Single Fire, Mikuni 42mm, S&S intake, Progressive springs, need money for Thunderheader and mid-controls! Have lot's to trade and $ if you have one for my bike!
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10-30-2012, 01:30 PM
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#4 (permalink)
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IronButt
Join Date: Mar 2011
Location: PA
Posts: 1,732
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Back in like 79 the feds mandated that speedo's show 85 mph as the maximum reading, along with being more accurate and having 55 being the prominent feature of the scale. The law was repealed, then applied as a rule, and un-applied and re-applied and so on. It caused much confusion as it was mentioned in many tampering regulations. What it did was cause many manufactures to follow the original law, just in case. Not to mention change over production lines. So lots of early to mid 80's speedo's showed 85 as a maximum speed along with 55 being highlighted. As this was also the low point of American performance and also the era of 89 octane only fuel, 85mph was not easily obtained by many of the cars being built, so, few complained.
Today, it's only an issue on an accurate restoration.
__________________
"All mankind is divided into three classes: those that are immovable, those that are movable, and those that move."
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10-30-2012, 01:51 PM
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#5 (permalink)
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IronButt
Join Date: Oct 2012
Location: Oregon
Posts: 223
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Wow you learn something new everyday. Thank you.
Both speedos say 120 though. Just don't want to buy one and have it not work on my 85.
__________________
1972 Superglide FX: Rebuilt, Super E, Drag pipes (FOR SALE PM ME)
2005 Sportster 1200: Thunderheader, SE ICM, SE carb upgrades, pretty stuff
1985 FXRS-SP: (looks VERY different than the pic. More black now) Dyna 2000 ICM, Twin Tec II Single Fire, Mikuni 42mm, S&S intake, Progressive springs, need money for Thunderheader and mid-controls! Have lot's to trade and $ if you have one for my bike!
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10-30-2012, 03:43 PM
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#6 (permalink)
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IronButt
Join Date: Dec 2008
Location: the blue house
Posts: 841
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85 isn't very fast ....... 
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10-30-2012, 05:22 PM
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#7 (permalink)
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IronButt
Join Date: Oct 2012
Location: Oregon
Posts: 223
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This is true. Just need to see why my speedo isn't working.
__________________
1972 Superglide FX: Rebuilt, Super E, Drag pipes (FOR SALE PM ME)
2005 Sportster 1200: Thunderheader, SE ICM, SE carb upgrades, pretty stuff
1985 FXRS-SP: (looks VERY different than the pic. More black now) Dyna 2000 ICM, Twin Tec II Single Fire, Mikuni 42mm, S&S intake, Progressive springs, need money for Thunderheader and mid-controls! Have lot's to trade and $ if you have one for my bike!
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10-30-2012, 06:07 PM
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#8 (permalink)
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IronButt
Join Date: Jul 2010
Location: NOMAD
Posts: 303
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Quote:
Originally Posted by lucille
85 isn't very fast ....... |
yeah, the 8K on the tach is just as overly optimistic as 150mph on the speedo 
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AL
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10-30-2012, 06:42 PM
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#9 (permalink)
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IronButt
Join Date: Dec 2008
Location: the blue house
Posts: 841
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Quote:
Originally Posted by ALAY191
Yeah, the 8K on the tach is just as overly optimistic as 150mph on the speedo
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It will rev to 6200 rpm ..... 
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10-30-2012, 11:57 PM
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#10 (permalink)
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IronButt
Join Date: Oct 2012
Location: Oregon
Posts: 223
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I was able to rev my bike up to 8k when it had the screamin eagle ICM on it. Aty least what the tach was showing. haha
__________________
1972 Superglide FX: Rebuilt, Super E, Drag pipes (FOR SALE PM ME)
2005 Sportster 1200: Thunderheader, SE ICM, SE carb upgrades, pretty stuff
1985 FXRS-SP: (looks VERY different than the pic. More black now) Dyna 2000 ICM, Twin Tec II Single Fire, Mikuni 42mm, S&S intake, Progressive springs, need money for Thunderheader and mid-controls! Have lot's to trade and $ if you have one for my bike!
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10-31-2012, 12:52 AM
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#11 (permalink)
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IronButt
Join Date: Jul 2010
Location: NOMAD
Posts: 303
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Quote:
Originally Posted by Krowbar
I was able to rev my bike up to 8k when it had the screamin eagle ICM on it. Aty least what the tach was showing. haha
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I'm glad I didn't buy it from you!
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AL
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10-31-2012, 02:13 AM
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#12 (permalink)
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IronButt
Join Date: Oct 2012
Location: Oregon
Posts: 223
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I have my Dyna ICM coming in the mail soon. What rpm should I set the rev limiter to?
__________________
1972 Superglide FX: Rebuilt, Super E, Drag pipes (FOR SALE PM ME)
2005 Sportster 1200: Thunderheader, SE ICM, SE carb upgrades, pretty stuff
1985 FXRS-SP: (looks VERY different than the pic. More black now) Dyna 2000 ICM, Twin Tec II Single Fire, Mikuni 42mm, S&S intake, Progressive springs, need money for Thunderheader and mid-controls! Have lot's to trade and $ if you have one for my bike!
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11-02-2012, 02:52 PM
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#13 (permalink)
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IronButt
Join Date: Jan 2003
Location: On my way to banned camp
Posts: 1,212
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Quote:
Originally Posted by Krowbar
I have my Dyna ICM coming in the mail soon. What rpm should I set the rev limiter to?
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I don't think I would want mine to go any higher than 6200 if everything in the motor is fairly stock.
__________________
The cost of living hasn't affected its popularity
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11-03-2012, 11:01 PM
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#14 (permalink)
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IronButt
Join Date: Oct 2012
Location: Oregon
Posts: 223
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Set it for 6k.
__________________
1972 Superglide FX: Rebuilt, Super E, Drag pipes (FOR SALE PM ME)
2005 Sportster 1200: Thunderheader, SE ICM, SE carb upgrades, pretty stuff
1985 FXRS-SP: (looks VERY different than the pic. More black now) Dyna 2000 ICM, Twin Tec II Single Fire, Mikuni 42mm, S&S intake, Progressive springs, need money for Thunderheader and mid-controls! Have lot's to trade and $ if you have one for my bike!
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