Gizmo needs Speedo help

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Gizmo

New Member
I recently bought a ASPT (assembled from parts) bike which has a Softail style frame with HD running gear (1340 engine). My problem is that it has Big Dog fuel tanks with a 2000 ProSport speedo which seems to run 10 mph higher than what my speed actually is. Is there a procedure to calibrate the speedo so that I'm closer to true bike speed? Using the mileage that the speedo provides between fill-ups comes up with about 62 mpg which I know just can't be true! Any help would be greatly appreciated. Thanks
 
Raywood

Raywood

The Pirate
Staff member
Calendar Participant
Troop Supporter
Hey, welcome to the site. First thing I would ask is it an Autometer speedometer you have. Don't know what BDM used back in 2000. If's it's an Autometer just call them and they will assist you over the phone. Quick and easy as I've called them before. The procedure has changed over the years.

:cheers:
 
G

Gizmo

New Member
Raywood said:
Hey, welcome to the site. First thing I would ask is it an Autometer speedometer you have. Don't know what BDM used back in 2000. If's it's an Autometer just call them and they will assist you over the phone. Quick and easy as I've called them before. The procedure has changed over the years.

:cheers:
Click to expand...
Thanks for the input ... how do I determine IF it is a Autometer Speedo? All the speedo face reads is Big Dog and VDO. It's a analog gauge (mph) with a digital readout for accumulated mileage and zeroing so that I can figure my mileage between fill-ups.
 
B

bigdogtech01

Well-Known Member
Gizmo said:
I recently bought a ASPT (assembled from parts) bike which has a Softail style frame with HD running gear (1340 engine). My problem is that it has Big Dog fuel tanks with a 2000 ProSport speedo which seems to run 10 mph higher than what my speed actually is. Is there a procedure to calibrate the speedo so that I'm closer to true bike speed? Using the mileage that the speedo provides between fill-ups comes up with about 62 mpg which I know just can't be true! Any help would be greatly appreciated. Thanks
Click to expand...
If you are not able to reprogram the VDO speedo you have then you could purchase a speed sensor from ThunderHeart that is programmable to your bike gearing specs. It is very user friendly and the guys can walk you threw it over the phone if you have any issues. I want to say it is around $100 retail. You can look it up at these sites.....

Thunder Heart Programmable Transmission Speedometer Sensor - DennisKirk.com

[ame=http://www.amazon.com/THUNDER-HEART-PERFORMANCE-PROGRAM-TRANS-SENSOR-EA4110/dp/B000GVEM84]Amazon.com: THUNDER HEART PERFORMANCE PROGRAM.TRANS.SENSOR EA4110: Automotive[/ame]

Hope this helps:up:
 
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