## Re: how fast is your ped?

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"95+mph.lol i got a wildfire 150cc moped"

Wow, annoying. Very annoying, but it puts things in perspective.

Check this out.

It's a script that calculates the air drag of a bicyclist based

on speed. The "Weight" field doesn't do anything - if you put in

"0" for wind speed and grade, you can use this to find out how

much energy it takes to overcome the force of wind resistance

(just wind resistance) to get to a certain speed with a front

surface area approximately equivalent to that of a bicyclist

(which will actually be smaller than that of a moped - this utility

will spit out a number on the low side).

So, let's try it - Tommy went 70mph. According to the widget, it

would require 4031 watts to maintain that speed against wind

resistance. That's a little more than five horsepower.

It does take some power to overcome inertia, bearing

resistance, and simple rolling resistance, so he would have

needed an engine that did even better than five horsepower

to get there.

Does that seem reasonable? 80cc kit, 24mm carb, porting,

pipe - that could feasibly put out the six or seven he'd need.

I imagine that getting it to put out six or seven horses at WOT

would be a tuning challenge, but I know Nate could do it, and

imagine the west coasters can too.

Now, 95 miles per hour would require more than 10 kilowatts,

or more than fifteen horsepower.

Is that possible with a 150cc engine? Definitely. Not the

clone of a 40-year-old Honda design that comes on a Wildfire

scooter, though.

The _best

manufacturer estimate_ of a wildfire scooter, though, says

that it can put out 6.5 kilowatts (about nine horsepower), and

Lifan-engined bikes are notoriously over-rated (literally, not

figuratively - I actually like them quite a bit).

So, no, dude didn't go 95 unless his illegal shixtbox has been

regeared, converted to water cooling, fitted with a bigger carb

and an exhaust trumpet, re-cammed, and run on nitromethane.

+++

Even more in perspective - the same utility says that it will

take about 1.5 horsepower to maintain 45 miles per hour.

That is absolutely correct - an Olympic cyclist can maintain the

1000+ watts needed to do this for a few minutes - and cycling

races regularly get up to the mid-forties in flat sprints.

That's clean horsepower, though, and your two-stroke engine

is not - a 1.5 Maxi doesn't put 1.5 horsepower on the ground

at full throttle, but the people who've tuned them up (above,

bunches of them) can get them to.

I believe 45. High sixties into seventies are plausible for top

of the line setups.

Now show me a ton.

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Subject Written By Posted
how fast is your ped?Topic by: sam 05/11/08 01:02AM
Re: how fast is your ped?Re: Zeke 05/11/08 01:13AM
Re: how fast is your ped?Re: sam 05/11/08 01:20AM
Re: how fast is your ped?Re: Moped Game Sally Struthers 05/11/08 01:38AM
Re: how fast is your ped?Re: Veronica 05/27/08 12:50PM
Re: how fast is your ped?Re: sam 05/11/08 01:45AM
Re: how fast is your ped?Re: Ben 05/11/08 02:03AM
Re: how fast is your ped?Re: Raymond Wright IV 05/11/08 10:45AM
Re: how fast is your ped?Re: Evan 05/11/08 01:46PM
Re: how fast is your ped?Re: General Jackson 05/12/08 03:40PM
Re: how fast is your ped?Re: Veronica 05/27/08 12:58PM
Re: how fast is your ped?Re: Steve 05/11/08 10:53AM
Re: how fast is your ped?Re: mateo 05/27/08 03:51AM
Re: how fast is your ped?Re: Freebird 05/11/08 01:06PM
Re: how fast is your ped?Re: j 05/11/08 10:25PM
Re: how fast is your ped?Re: jake 05/11/08 04:24PM
Re: how fast is your ped?Re: Zeke 05/11/08 10:27PM
Re: how fast is your ped?Re: sam 05/11/08 05:26PM
Re: how fast is your ped?Re: Flynnturd 05/11/08 06:09PM
Re: how fast is your ped?Re: Shane 05/12/08 10:35AM
Re: how fast is your ped?Re: Austin 05/11/08 06:40PM
Re: how fast is your ped?Re: sam 05/11/08 06:58PM
Re: how fast is your ped?Re: Graham Motzing 05/11/08 07:19PM
Re: how fast is your ped?Re: Zack 05/11/08 09:04PM
Re: how fast is your ped?Re: sam 05/11/08 07:24PM
Re: how fast is your ped?Re: elliot 05/11/08 08:25PM
Re: how fast is your ped?Re: Dan T 05/21/08 11:16PM
Re: how fast is your ped?Re: sam 05/11/08 10:22PM
Re: how fast is your ped?Re: Freebird 05/11/08 10:35PM
Re: how fast is your ped?Re: elliot 05/11/08 10:37PM
Re: how fast is your ped?Re: 70 mph 50cc 11/08/09 05:13PM
Re: how fast is your ped?Re: Freebird 05/11/08 10:42PM
Re: how fast is your ped?Re: Fred 05/11/08 10:44PM
Re: how fast is your ped?Re: Fred 05/11/08 10:46PM
Re: how fast is your ped?Re: j 05/11/08 11:08PM
Re: how fast is your ped?Re: Freebird 05/11/08 10:49PM
Re: how fast is your ped?Re: Fred 05/11/08 10:58PM
Re: how fast is your ped?Re: Freebird 05/11/08 11:05PM
Re: how fast is your ped?Re: elliot 05/11/08 11:12PM
Re: how fast is your ped?Re: sam 05/11/08 11:12PM
Re: how fast is your ped?Re: Raymond Wright IV 05/11/08 11:17PM
Re: how fast is your ped?Re: Freebird 05/11/08 11:17PM
Re: how fast is your ped?Re: Elder Bandit 05/12/08 01:29AM
Re: how fast is your ped?Re: j 05/12/08 02:09AM
Re: how fast is your ped?Re: wild goose 05/12/08 01:55AM
Re: how fast is your ped?Re: hipso 05/12/08 11:10AM
Re: how fast is your ped?Re: sam 05/12/08 02:52PM
Re: how fast is your ped?Re: steve 05/25/08 07:34PM
Re: how fast is your ped?Re: elliot 05/12/08 03:33PM
Re: how fast is your ped?Re: General Jackson 05/12/08 03:41PM
Re: how fast is your ped?Re: Elder Bandit 05/12/08 03:46PM
Re: how fast is your ped?Re: terry dean 05/12/08 05:34PM
Re: how fast is your ped?Re: .Allen Schlung 05/12/08 05:42PM
Re: how fast is your ped?Re: Freebird 05/12/08 06:27PM
Re: how fast is your ped?Re: .Allen Schlung 05/12/08 06:28PM
Re: how fast is your ped?Re: SAm 05/18/08 07:49PM
Re: how fast is your ped?Re: Nick Price 05/21/08 10:08PM
Re: how fast is your ped?Re: hondaman 05/19/08 09:49PM
Re: how fast is your ped?Re: foxboss9 05/20/08 07:55AM
Re: how fast is your ped?Re: Mozes 05/20/08 12:36PM
Re: how fast is your ped?Re: Erik Elhammer 05/21/08 05:23AM
Re: how fast is your ped?Re: dallas 05/21/08 05:48PM
Re: how fast is your ped?Re: Zeke 05/21/08 08:53PM
Re: how fast is your ped?Re: Joe Scott 05/21/08 10:15PM
Re: how fast is your ped?Re: Dan T 05/21/08 10:53PM
Re: how fast is your ped?Re: mike 05/22/08 12:09AM
Re: how fast is your ped?Re: vic 05/22/08 01:24AM
Re: how fast is your ped?Re: Dan T 05/22/08 02:35PM
Re: how fast is your ped?Re: .Allen Schlung 05/22/08 03:09PM
Re: how fast is your ped?Re: BootyClap Ninja 05/22/08 03:41PM
Re: how fast is your ped?Re: Bort Hoff 05/22/08 03:47PM
Re: how slow are my peds?Re: Troy Elizares 05/22/08 04:31PM
Re: how slow are my peds?Re: Dan T 05/22/08 06:37PM
Re: Whey fast.Re: Troy Elizares 05/24/08 11:52PM
Re: how fast is your ped?Re: dave 11/08/09 03:57AM
Re: Whey fast.Re: ✝️TD-THE MORAL AUTHORITY✝️ ✨ 05/24/08 11:57PM
Re: Whey fast.Re: Troy Elizares 05/25/08 12:03AM
Re: how fast is your ped?Re: Dan 05/25/08 07:36AM
Re: how fast is your ped?Re: Jim 05/25/08 04:03PM
Re: how fast is your ped?Re: steve 05/25/08 07:35PM
Re: how fast is your ped?Re: daveysaves 05/26/08 02:12AM
Re: how fast is your ped?Re: MC Bodge 05/27/08 05:27AM
Re: how fast is your ped?Re: Matt Scout The Scouting Dcon 05/27/08 10:21AM
Re: how fast is your ped?Re: jaker 05/27/08 10:23AM
Re: how fast is your ped?Re: J W 05/27/08 05:03PM
how fast is your ped?Re: Brennan O. 05/27/08 05:11PM
Re: how fast is your ped?Re: mmreinha 05/27/08 09:43PM
Re: how fast is your ped?Re: zeke 11/08/09 06:34AM
Re: how fast is your ped?Re: b 11/08/09 07:15AM
Re: how fast is your ped?Re: human drew 11/08/09 10:44AM
Re: how fast is your ped?Re: Mo Peds 11/08/09 10:47AM
over itRe: Nate Bandit 11/08/09 01:21PM
Re: over itRe: human drew 11/08/09 03:53PM
Re: how fast is your ped?Re: 70 mph 50cc 11/08/09 05:15PM
Re: how fast is your ped?Re: sunflower seeds 11/12/09 03:47PM
Re: how fast is your ped?Re: GARzan Justin 11/08/09 06:24PM
Re: how fast is your ped?Re: dave 11/08/09 09:00PM
Re: how fast is your ped?Re: Fubar 11/08/09 10:27PM
Re: how fast is your ped?Re: mattology - 11/08/09 10:19PM
Re: how fast is your ped?Re: x d 11/09/09 01:47AM
Re: how fast is your ped?Re: pullstart 11/09/09 12:10PM
Re: how fast is your ped?Re: andrewhed 11/09/09 12:27PM
Re: how fast is your ped?Re: andrewhed 11/09/09 09:45PM
Re: how fast is your ped?Re: . . 11/09/09 10:10PM
Re: how fast is your ped?Re: Ϫ‡☄ಬ∞ ƀƖḬƝƊ ƤǂƿƎ ∞ಬ☄‡Ϫ - Hoke from Black Pipes Moped Gang 11/10/09 04:59AM
Re: how fast is your ped?Re: Nash . 11/10/09 05:09AM
Re: how fast is your ped?Re: Andy Zeros 11/10/09 12:14PM
Re: how fast is your ped?Re: terry dean 11/11/09 03:27PM
Re: how fast is your ped?Re: Lance Campeau 11/11/09 05:19PM
Re: how fast is your ped?Re: terry dean 11/11/09 09:00PM
Re: how fast is your ped?Re: johno roberts 11/11/09 10:21PM
Re: how fast is your ped?Re: sTv 11/11/09 10:33PM
Re: how fast is your ped?Re: terry dean 11/12/09 12:03AM
Re: how fast is your ped?Re: human drew 11/12/09 10:23AM
Re: how fast is your ped?Re: doppelkolben 11/12/09 05:14PM
Re: how fast is your ped?Re: mark Kloninger 11/12/09 10:19PM
Re: how fast is your ped?Re: Andy Zeros 11/12/09 11:29PM
Re: how fast is your ped?Re: Nash . 11/13/09 12:57AM
Re: how fast is your ped?Re: Eat A Cactus 11/13/09 12:56PM
Re: how fast is your ped?Re: Sam Blk 11/13/09 02:06PM
Re: how fast is your ped?Re: Burke S 11/13/09 10:27PM
Re: how fast is your ped?Re: Bill_o_MAtic 11/14/09 08:21PM

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