I'm a Noob and I Wanna Go 50MPH

[amberwolf]

(temporarily stickied)

http://www.endless-sphere.com/w/index.php/I%27m_a_Noob_and_I_Wanna_Go_50MPH

There is quite a bit of information one must know to build a bicycle that can go this fast, and there are legal issues with it both for speed and power reasons in many (most?) places.

So the article linked above (and essentially quoted here in it's first iteration) is a list of links to various "I'm a noob and I wanna go 50MPH" threads, as well as successful builds of such bikes, so poeple who can't/won't/don't search can find and read about others trying to do the same thing, and not have yet another long discussion about what/why/how/cost/etc., until they are actually ready and understand what they are getting themselves into.

Data from threads needs to be collated here into the article. Not all links have been perused yet for relevancy, only a search for "50MPH" was done by thread title and first post. There may be many more relevant threads not yet entered. Please add them into the wiki article if you find any. Feel free to remove irrelevant thread links from the article as you find them.


http://www.endless-sphere.com/forums/viewtopic.php?f=7&t=7229 http://www.endless-sphere.com/forums/viewtopic.php?f=5&t=14786 http://www.endless-sphere.com/forums/viewtopic.php?f=10&t=34110 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=36830



http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=43329 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=44170 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=28721 http://www.endless-sphere.com/forums/viewtopic.php?f=31&t=17371 http://www.endless-sphere.com/forums/viewtopic.php?f=28&t=17924 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=17522 http://www.endless-sphere.com/forums/viewtopic.php?f=7&t=711


http://www.endless-sphere.com/forums/viewtopic.php?f=10&t=44654 http://www.endless-sphere.com/forums/viewtopic.php?f=28&t=42084 http://www.endless-sphere.com/forums/viewtopic.php?f=10&t=38598 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=38427 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=34527 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=33037 http://www.endless-sphere.com/forums/viewtopic.php?f=2&t=32289 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=34269 http://endless-sphere.com/forums/viewtopic.php?f=3&t=33337 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=33817 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=21386 http://www.endless-sphere.com/forums/viewtopic.php?f=6&t=16292 http://www.endless-sphere.com/forums/viewtopic.php?f=6&t=21509 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=21588 http://www.endless-sphere.com/forums/viewtopic.php?f=2&t=20537 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=20089 http://www.endless-sphere.com/forums/viewtopic.php?f=2&t=18096 http://www.endless-sphere.com/forums/viewtopic.php?f=10&t=14245 http://www.endless-sphere.com/forums/viewtopic.php?f=10&t=13576 http://www.endless-sphere.com/forums/viewtopic.php?f=10&t=13585 http://www.endless-sphere.com/forums/viewtopic.php?f=6&t=5881 http://www.endless-sphere.com/forums/viewtopic.php?f=12&t=6330 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=4957 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=3985 http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=666 http://www.endless-sphere.com/forums/viewtopic.php?f=2&t=365 http://www.endless-sphere.com/forums/viewtopic.php?f=2&t=302 http://www.endless-sphere.com/forums/viewtopic.php?f=2&t=316

 

[etriker]

This car can go really fast on gas for about 12 min. Then it runs out of gas.

http://wikicars.org/en/Bugatti_Veyron

It could carry an extra 100 gallons but then it may not handle very good.

Same with an ebike. You can make it go fast but not for very far unless you carry lots of batteries then it may not handle very good because of all the batteries.

Want to go 50 mph on a bicycle ? Get a real good road bike and find a good hill !

 

[bigmoose]

Amber, might this thread of yours make a good entry in Ypedal's basic FAQ for noobs post here?
http://endless-sphere.com/forums/viewtopic.php?f=3&t=26488

 

[amberwolf]

Maybe, but I don't think they read that one either.


Whatever everyone else feels is best. I just created it and the wiki article to have a place to point them to, to give them a good start.

 

[greenmountainski]

My setup does 50 down slight hills and handles like a dream. That's because it is set up with proportions to a motorcycle. As a pedal bike, the Nirve Switchblade is very difficult with its awkward forward pedels and rear riding seat, but accompanied with the Crystalyte 7240 system and 2 36V 20 AH Ping batteries in series, I feel I have made the perfect bike for performance and range. Quick acceleration and over 30 miles of full throttle range. If you milk the throttle, I think I can reach 40 miles on a charge. No suspension other than thick beefy 24 inch rear tire and 26 front, and a springer seat, still proves for a very comfy ride on newly paved roads but a few pot holes and cracks can make it feel like the bike is taking a beating.

You need to think about where you are riding, and pick a bike.
Come up with a solid battery mount.
Be prepared to spend over 2.5 grand.

 

[amberwolf]

For anyone posting about a specific bike here, I instead recommend you add a link to your build thread, both here and in the wiki article, and condense down how you chose what parts you used and exactly why, what problems you had to overcome and safety issues you've run across, and put that in the wiki, too.

That would do more to help noobs that want to do this decide if they really do.

 

[EdwardNY]

I like this sticky, I was one of those noobs asking how to make my mountain bike do 50MPH.

Good advice about posting build links. When I was researching my bike the build threads were very helpful. Here are some of the ones I booked marked.
I eventually will work on my build thread.


http://endless-sphere.com/forums/viewtopic.php?f=3&t=29799
http://endless-sphere.com/forums/viewtopic.php?f=6&t=37151
http://endless-sphere.com/forums/viewtopic.php?f=6&t=23290

 

[scotticeberg]

If you want to do 50mph get an electric motorcycle.

 

[cwah]

But it's so much better to go 50 mph on bicycle rather than motorcycle :lol:

Bicycle are agile and lighter. You can bring them with you. Not a motorcycle!

 

[Ykick]

But it's so much better to go 50 mph on bicycle rather than motorcycle :lol:

Bicycle are agile and lighter. You can bring them with you. Not a motorcycle!

People in HELL want ice water but 50 mph bicycles do not exist. Sure, we got rides faster than 50 that are lightweight and have working pedals but they're not bicycles and it's actually a negative association to make for those of us merely trying to get to work on BICYCLES.

You were told about the obvious shortcomings of riding a 30MPH folder but didn't care and ignored quality help and advice. Now you'll do the same thing with the 40-50MPH cargo bike notion....

 

[pkirkll]

OUCH.......

 

[cwah]

 

[EdwardNY]

Deleted

 

[amberwolf]

Please note: This thread isn't for arguing about such bikes, it is simply to make a collection of links to information for those that think they want to try it, so that those who wish to write the wiki article (linked in the OP) have another resource to draw from.

So to repeat myself:

"I instead recommend you add a link to your build thread, both here and in the wiki article, and condense down how you chose what parts you used and exactly why, what problems you had to overcome and safety issues you've run across, and put that in the wiki, too.

That would do more to help noobs that want to do this decide if they really do."

 

[kentlim26]

I am one guy wanted to go and reached this 50mph, but have to start from somewhere 50km/h, slowly and slowly it gets faster and faster. during my build I learnt it was difficult task. 1st of all, is the bike build, WAS it stable enough to go for that 80km/h ? at a speed above 65km/h My ebike wobble quite terrible. So a bike frame counts importantly, after is the motor area, controller area, battery area. at a speed 60km/h is already Quite FUN !! once again, I do have always wanted to see 80km/h .. ha ha

 

[hjns]

Nice challenge.

I was a real noob, and am still kind of a noob, but I have a bike that easily go 50mph / 80kmh. When starting with ebikes over a year ago, I had no clue about motors, no clue about batteries, no knowledge about controllers, nor any knowledge about bikes in general. I started with ebikes because my wife gave me a cheap chinese pedelec. And yes, it was too slow, not powerful enough, etc. So the first thing I did was read, read, and read some more and I started asking some noob questions.

See my build thread for how I started.

Bit by bit, I learned about motors, controllers, and batteries. A CA was a no-brainer, I became quickly convinced Lipo was the chemistry to go, and I also quickly bought a nice powerful motor (Clyte HT3525). Now here was the biggest leap, because I went from 36V all the way to 128V (30S Lipo) in order to compensate for the low speed Clyte. The combination was great, but quickly demonstrated the need for a good full suspension frame.

Bit by bit, I learned about MTB frames, the differences between a DH (DownHill) frame / rims and XC (Cross Country) setups. In the end, I could get a XC frame for cheap, put a nice front fork on it, and then encountered something called cromotor. This is a faster wind than my HT3525, so I went down to 20S (84V hot of charger), which is still plenty. And it allows for 50mph going only slightly downhill......

 

[parajared]

I have hit mid 40s on GNG mid-drive kit at 72 volts. Stock setup except for the controller which was a lyen 12 fet sensorless.
I have hit mid 40s on a Magic Pie II at 100.8 volts stock setup with lyen 12 fet.
I have hit 50mph on a 9c with 12ga phase wires instead of stock, with lyen 12 fet controller.

50mph on standard bicycle tires is a hair raising, awkward feeling experience, but 50mph on 2.5 wide tires is nothing. It's like riding a really light motorcycle.

 

[amberwolf]

Please note: This thread is simply to make a collection of links to information for those that think they want to try it, so that those who wish to write the wiki article (linked in the OP) have another resource to draw from.

So to repeat myself:

"I recommend you add a link to your build thread, both here and in the wiki article, and condense down how you chose what parts you used and exactly why, what problems you had to overcome and safety issues you've run across, and put that in the wiki, too."

 

[ian.mich]

Cheapest way of doing this ever: buy a generic chinese kit with the crappy rim and everything. 4110 controller swap-in, new motor phases, proper 24S lipo. congrats! moment you hit 50 that rim falls apart and so do you

 

[SamRam]

Edit: built thread
http://endless-sphere.com/forums/viewtopic.php?f=3&t=39006

I'd say, stay safe.
Get a greyborg frame, some fancy parts, and a cheap battery. Decent motor.
Get it working and then up the battery/controller/motor combo. (Get a Lyen 18Fet high voltage modded controller FS)
That greyborg frame is so stable.
You can wobble it as hard as You want at 40kM/h, land wheelies sideways.
Very safe. No speed wobble, no handed easy!

Lots of battery room, stable since it's inside the frame.

I've seen 98kM/h on a first test run on my buddies farm, dirt road.
That was e-grin at it's finest.

Seriously dangerous to do this though, blowouts could be terrible(can't cheap out, just get dot rated 24" tires. Torque!) Also bigger spokes! Hitting things becomes exponentially worse with higher speeds, cops, laws etc etc.
I'd say get a battery that is higher voltage, about 20A/h, and just run it at legal limit, pedal with it, shlumpf it up.
Set Your voltage about 20 over Your desired speed in kM

If You love Your ride enough to build it, ride it safe enough to never crash her.
Then of road will be a blast.

 

[amberwolf]

Please note: This thread is simply to make a collection of links to information for those that think they want to try it, so that those who wish to write the wiki article (linked in the OP) have another resource to draw from.

So to repeat myself:

"I recommend you add a link to your build thread, both here and in the wiki article, and condense down how you chose what parts you used and exactly why, what problems you had to overcome and safety issues you've run across, and put that in the wiki, too."

 

[John in CR]

I've had 50mph ebikes for 4 years, and I'm getting a bit bored. Where's the sticky thread for 100mph ebikes.

 

[liveforphysics]

I've had 50mph ebikes for 4 years, and I'm getting a bit bored. Where's the sticky thread for 100mph ebikes.

I haven't written it yet.

But I made my 100mph ebike the hard way, just brute horsepower. The smart way would be streamlining.

 

[amberwolf]

Please note: This thread is simply to make a collection of links to information for those that think they want to try it, so that those who wish to write the wiki article (linked in the OP) have another resource to draw from.

So to repeat myself:

"I recommend you add a link to your build thread, both here and in the wiki article, and condense down how you chose what parts you used and exactly why, what problems you had to overcome and safety issues you've run across, and put that in the wiki, too."

 

[Chalo]

But I made my 100mph ebike the hard way, just brute horsepower. The smart way would be streamlining.

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