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What does a wheelie look like when you graph it?
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@steelbytes avatar
SteelBytes
UTC
Veni, Vidi, Posti
2019 GTS 300 HPE w Malossi cylinder & cam
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Location: Batmania aka Melbourne, Aus
 
SteelBytes
Veni, Vidi, Posti
@steelbytes avatar
2019 GTS 300 HPE w Malossi cylinder & cam
Joined: UTC
Posts: 8763
Location: Batmania aka Melbourne, Aus
UTC quote
like this (screenshot from my Vespa Snoop app)

look at the red (front) and green (rear) lines in the top graph. you'll see the rear continues to accelerate when the front has lifted and starts to slowly slow down until the wheel drops just under a 1sec later
graph
graph
Positive
@juan_orhea avatar
Juan_ORhea
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Molto Verboso
S150 '09, Beo 500ie '08
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Juan_ORhea
Molto Verboso
@juan_orhea avatar
S150 '09, Beo 500ie '08
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UTC quote
That's interesting. I like how the front wheel turns a little more slowly than the rear after the wheelie. What do we make of the jag in the RPM line below the characters "78-79" under the RPM label? Does the belt slip a little along the variator as the variator/spring tension system adjusts? I think of them as moving somewhat continuously, but maybe they don't.
@seamus26 avatar
seamus26
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1979 P200E (sold) / ZNEN Amore 150 (sold) / Genuine Buddy 170i / Genuine Stella 4T / Aprilia Sportcity One 50 / 2016 Vespa Sprint 50
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Location: Grand Rapids, MI
 
seamus26
Ossessionato
@seamus26 avatar
1979 P200E (sold) / ZNEN Amore 150 (sold) / Genuine Buddy 170i / Genuine Stella 4T / Aprilia Sportcity One 50 / 2016 Vespa Sprint 50
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Location: Grand Rapids, MI
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That was likely the coolest thing I will see all day. Thanks!
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@steelbytes avatar
SteelBytes
UTC
Veni, Vidi, Posti
2019 GTS 300 HPE w Malossi cylinder & cam
Joined: UTC
Posts: 8763
Location: Batmania aka Melbourne, Aus
 
SteelBytes
Veni, Vidi, Posti
@steelbytes avatar
2019 GTS 300 HPE w Malossi cylinder & cam
Joined: UTC
Posts: 8763
Location: Batmania aka Melbourne, Aus
UTC quote
Juan_ORhea wrote:
That's interesting. I like how the front wheel turns a little more slowly than the rear after the wheelie. What do we make of the jag in the RPM line below the characters "78-79" under the RPM label? Does the belt slip a little along the variator as the variator/spring tension system adjusts? I think of them as moving somewhat continuously, but maybe they don't.
Not really sure. Will be interesting to see if somebody can give a neat explanation.
@berto avatar
berto
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Ossessionato
2018 Liberty 150
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berto
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@berto avatar
2018 Liberty 150
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UTC quote
How do you get your GTS to wheelie?!
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@steelbytes avatar
SteelBytes
UTC
Veni, Vidi, Posti
2019 GTS 300 HPE w Malossi cylinder & cam
Joined: UTC
Posts: 8763
Location: Batmania aka Melbourne, Aus
 
SteelBytes
Veni, Vidi, Posti
@steelbytes avatar
2019 GTS 300 HPE w Malossi cylinder & cam
Joined: UTC
Posts: 8763
Location: Batmania aka Melbourne, Aus
UTC quote
berto wrote:
How do you get your GTS to wheelie?!
Turn off ASR and get the launch "just right"

Of course this is only a tiny wheelie, probably only an inch of the ground. Gotta mount a camera low down pointing at the front wheel one day ...
@seamus26 avatar
seamus26
UTC
Ossessionato
1979 P200E (sold) / ZNEN Amore 150 (sold) / Genuine Buddy 170i / Genuine Stella 4T / Aprilia Sportcity One 50 / 2016 Vespa Sprint 50
Joined: UTC
Posts: 3440
Location: Grand Rapids, MI
 
seamus26
Ossessionato
@seamus26 avatar
1979 P200E (sold) / ZNEN Amore 150 (sold) / Genuine Buddy 170i / Genuine Stella 4T / Aprilia Sportcity One 50 / 2016 Vespa Sprint 50
Joined: UTC
Posts: 3440
Location: Grand Rapids, MI
UTC quote
steelbytes wrote:
Turn off ASR and get the launch "just right"

Of course this is only a tiny wheelie, probably only an inch of the ground. Gotta mount a camera low down pointing at the front wheel one day ...
Used to pick up the front wheel on my P200E all the time. Surprised people at stoplights.

Got the Stella in a wheelie the other day. Completely accidental. Still ... pretty cool.
@retro_scoot avatar
Retro Scoot
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Hooked
2023 GTS300, 2021 Sprint, 2024 BV400
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Location: Bama
 
Retro Scoot
Hooked
@retro_scoot avatar
2023 GTS300, 2021 Sprint, 2024 BV400
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Posts: 243
Location: Bama
UTC quote
My graph would end in a flat line. It's been a "few" years...
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