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Real MPH = variable

Posted: Thu Apr 14, 2016 5:12 am
by Argee
I strapped my GPS on the Buddy 170i and recorded actual MPH from 20 to 65 BMPH. Not too bad at lower speeds, but drops off rapidly to over 5 mph too fast after around 60 bmph.

So, my top speed is...62.3 gps mph. No freeways for me.

NOTE: my tire pressure is a little higher than normal.

RAW DATA:
20 17.4 2.6
25 22.7 2.3
30 27.1 2.9
35 31.4 3.6
40 35.7 4.3
45 40.8 4.2
50 45.7 4.3
55 50.6 4.4
60 55.3 4.7
65 59.3 5.7
Indicated,GPS, & diff in MPH

Posted: Thu Apr 14, 2016 2:14 pm
by dasscooter
When my girlfriend rides the Buddy, she normally asks me how fast my '79 Vespa is going since it's accurate. :lol:

Re: Real MPH = variable

Posted: Thu Apr 14, 2016 3:40 pm
by skipper20
Argee wrote:I strapped my GPS on the Buddy 170i and recorded actual MPH from 20 to 65 BMPH. Not too bad at lower speeds, but drops off rapidly to over 5 mph too fast after around 60 bmph.

So, my top speed is...62.3 gps mph. No freeways for me.

NOTE: my tire pressure is a little higher than normal.

RAW DATA:
20 17.4 2.6
25 22.7 2.3
30 27.1 2.9
35 31.4 3.6
40 35.7 4.3
45 40.8 4.2
50 45.7 4.3
55 50.6 4.4
60 55.3 4.7
65 59.3 5.7
Indicated,GPS, & diff in MPH
That's about right. My 170i Hooligan's speedos are actually about 10% optimistic at higher speeds.

Bill in Seattle