Basics of Bike conversion
I am searching for different motorcycle conversion tutorials. Our requirement is to obtain a speed of 150 km/hour. Two the point which I got so far:
[Sorry, I made a typo mistake used the bike instead please forgive and missed k instead I wrote mph instead of kmph. Now replaced both. Thanks and sorry] |
Bike? As in bicycle or motorcycle?
150mph...is that the correct unit? |
150 mph bike... I'd suggest V-Max; that torque is a BLAST!
150 mph bicycle... go with rocket power. |
First determine CdA drag. Second find where you can ride safely ride a motorcycle at 150 mph.
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Hey, OP
Pretty obviously you had something else on your mind when you specified "150 mph motor." You can do 150 mph on a bicycle, but you have to be drafting the Pepsi Challenger dragster to do it. You can do 150 mph on a motorcycle, but you probably won't be able to fit the kind of motor it requires onto a bicycle frame. So please update this thread with what you actually meant when you said "150 mph." |
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Look at his post history. |
Sorry it was a blunder from my side
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Aha, better. 150kph is more reasonable :)
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Moto
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It was like watching a game of telephone. It was good to see the mid-course correction.
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Then do a lot of homework. Would 20hp get 90mph? http://ecomodder.com/forum/showthrea...tor-35003.html The 1947 Volkhart-Saggitta had 25hp and went 90mph. It is/was a four-passenger car with a Cd of 0.17. So there's you benchmark. |
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There are plenty of ideas on Ecomodder itself.
214 mpg with DIY aerodynamic fairings on a Honda 125cc motorbike http://ecomodder.com/blog/wp-content...treamliner.jpg |
~33kw needed to maintain 150km/hr. 50kw will get you there in ~25 seconds.
Based on the numbers I put in. Could be considerably worse or considerably better, depending on weight and aerodynamics. |
Thanks
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Nice share
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My basics on this:
Around 25HP rated motor ESC capable of over 400 amps A killer battery setup that can discharge high amps for over 15 seconds burst. (probably a 34V setup? ) custom gears very efficient aero design. Good luck to you! This sounds expensive to me! -Liberty |
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You have the Fossil Fuel Free and Motorcycles / Scooters subforums as well. Do you know how to use the Site Search function? Around 25HP rated motorThe Buick altermotor is 20hp. But it wants 72-115V. Which means smaller cables for your 15 second bursts. Why do you want [expensive] custom gears? Make it a single speed and double the horsepower rating and uprate the cable carrying capacity to compensate. Slam-shifting takes time and you only have 15 seconds. Drag racers were skipping gears in the 1950s and beating the sporty-car types. Does it have to be expensive? I posted a video here about someone who broke world records on a bicycle he made from washing machine parts (allegedly): http://ecomodder.com/forum/showthrea...tml#post564109 |
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Variables I plugged in were from searching on google. ~ 1.0 .cd (upright rider, unfaired motorcycle), ~8 square feet frontal area. Intentionally using worst-case values (hopefully). |
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Gears help greatly with getting the motor into its sweet spot. As we know the torque falls on its face in higher rpms with electric motors. Expensive is just my experience with battery arrays and electronics that can handle over 300amps. I suppose expensive is a relative term depending on what you think is expensive :) -Liberty |
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