Throwing down the gauntlet!

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Drunkskunk   100 GW

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Throwing down the gauntlet!

Post by Drunkskunk » Jul 12 2014 7:15am

I'm Throwing down the gauntlet. Its time for you to step up and prove your worth on the field of internet battle!

Mano a mano, or Ebike-o a Ebike-o... something... My Bike against yours in hill climbing!

Since we're all honest people here, we can fight this out with maps and youtube videos. Just pick a hill and go climb it.

Here's my opening shot. 2 hills in Austin Texas. Jester Blvd, and Beauford Drive. I found jester blvd listed on a national forum for joggers as one of the hardest climbs in Texas. Its a good steady climb peaking at 28% grade. Its also a boring view, but for a jogger or a cyclist it's a smooth straight climb that will wear you down fast. While riding the area, I found Beauford Drive a block away. its a little shorter, but steeper, twisted, and more scenic. i spent a lot of time going up and down it, and completely destroyed a set of brake pads doing it.

I was able to hit 33 going up Beauford once, on a fresh battery. But I had to back out of the throttle for traction reasons. I never hit more than 33 going down for the same reason. I hit more on Jester but never looked at the speedo. The road surface on Jester is normal, but Beauford is grooved for wet traction, and my balloon tires just couldn't hook up.

Damn that was some serious fun! Austin is a great town. I want to go back when I can spend more time there.

Buy the ticket, take the ride.
Monster Bike:http://endless-sphere.com/forums/viewto ... =6&t=38667

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arkmundi   1 GW

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Re: Throwing down the gauntlet!

Post by arkmundi » Jul 12 2014 9:22am

I bow in submission to your general greatness and throw various objects of admiration in the vicinity of your path.

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MadRhino   100 GW

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Re: Throwing down the gauntlet!

Post by MadRhino » Jul 12 2014 2:51pm

Too bad I am so far from Austin :|
I would be glad to race you up and down any hill, especially if it is steep and dirt :twisted:
Make it fool-proof, and I will make a better fool.
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Ypedal   100 GW

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Re: Throwing down the gauntlet!

Post by Ypedal » Jul 12 2014 3:00pm

It is really difficult to show how steep a hill is on camera...
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dogman dan   100 GW

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Re: Throwing down the gauntlet!

Post by dogman dan » Jul 12 2014 3:46pm

Steepest thing my bike ever climbed was about 20 degrees. Rocks, since soil likes to go downhill at 20 degrees. 28% is about 15.5 degrees, so my dirt bike would get up it. But not as fast as yours does, being a mere 28 mm magnet 9 continent motor.

Wish we lived a bit closer, I'd love to have somebody confirm that the trails dogman rides really are steep. They never look like it in the videos.

Steepest paved road of any length I've seen in New Mexico is near Madrid, where they filmed Wild Hogs. 18% grade for about a half mile. The time I rode it, I was going down though. That bike wouldn't have made it up it, only 800w.

For the newbs that haven't seen them, here's my bike climb vids. In the vids, the point I stall and have to stop is around 25 degrees.

http://www.youtube.com/watch?v=6RpXuIyAnkY

In this vid, the hill at 2.32 is the really steep one, again close to black diamond ski slope grade where it stops me. Definitely scary coming back down.

http://www.youtube.com/watch?v=AfwdkfNZ7RQ

and if you watch my vids at all, you have to watch the funny one, where a dog tries to chase dogman. The good part is at the end.

http://www.youtube.com/watch?v=K7kBztwTA3U

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wesnewell   100 GW

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Re: Throwing down the gauntlet!

Post by wesnewell » Jul 12 2014 4:57pm

One of th steeper hills around here.
alpine1.jpg
Click to enlarge
Need Advice? https://endless-sphere.com/forums/viewt ... =3&t=66302
Mongoose 26" Ledge 2.1 mtb bike $99, yescomusa.com 48V 1000W rear hub kit $200, Hua Tong 72V 40A controller $35, 10ah 24s lipo $217=~43mph, range=45 miles @ 20mph. 25K miles and still going strong.
Huffy Fortress 3.0 with MXUS 3000 4T motor, 24s lipo, 96V 60A controller. Total cost with extras <$700. Top speed ~50mph
My videos https://www.youtube.com/channel/UC0KW4U ... _G2wQhptMg

999zip999   100 GW

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Re: Throwing down the gauntlet!

Post by 999zip999 » Jul 12 2014 5:16pm

What ? I learned how to melt batteries and motors on my hills so just go around them. I learned to live another day.
Proops drunkshunk wish I could afford it.

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yopappamon   10 kW

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Re: Throwing down the gauntlet!

Post by yopappamon » Jul 12 2014 6:06pm

90+ volts on a bike?!?! Thats's more than some ev cars! Excellent!

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wineboyrider   100 MW

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Re: Throwing down the gauntlet!

Post by wineboyrider » Jul 12 2014 6:38pm

Those hills ain't shit compared to what we got here. But, my builds are all commuter only and no fun....LOL
ES IS SAVED! THANK YOU JUSTIN.

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AussieJester   100 GW

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Re: Throwing down the gauntlet!

Post by AussieJester » Jul 12 2014 6:53pm

Gladly accept the challenge, midrives excel at hill climbing,
And my two speed box has just the gear to cruise up any hill at 50km/hr to the cows
Come home...and 100+ going down then lol.. Hehe

KiM

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izeman   100 GW

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Re: Throwing down the gauntlet!

Post by izeman » Jul 12 2014 7:11pm

i guess hill climb just end where tires loose grip. isn't it? there won't be any paved road you can't climb with a 2kw+ mid drive in first gear i guess. so we have to go find some forests etc and there you have gravel, rocks and roots to pass. i guess this would be the challenge? or is it speed in relation to steepness? in that case i'm out ;)

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Re: Throwing down the gauntlet!

Post by amberwolf » Jul 12 2014 8:12pm

Ypedal wrote:It is really difficult to show how steep a hill is on camera...
Just make one of htose weighted-needle indicators on a sheet of plastic or cardstock, with the angles marked on it, mounted on your bike where the camera can see it while you ride. This assumes you're honest about the markings, but if you can see the edge of the sheet and are starting on a flat surface, and the video is continuous, you can at least see the relative angle-change easily enough.

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ohzee   1 MW

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Re: Throwing down the gauntlet!

Post by ohzee » Jul 13 2014 2:19am

Enjoyed the video & the humor.

Not much in the way of hills around here.

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wesnewell   100 GW

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Re: Throwing down the gauntlet!

Post by wesnewell » Jul 13 2014 3:48am

First attempt at adding a youtube video.It took over 3 hours to upload a 10 minute video to youtube.
Need Advice? https://endless-sphere.com/forums/viewt ... =3&t=66302
Mongoose 26" Ledge 2.1 mtb bike $99, yescomusa.com 48V 1000W rear hub kit $200, Hua Tong 72V 40A controller $35, 10ah 24s lipo $217=~43mph, range=45 miles @ 20mph. 25K miles and still going strong.
Huffy Fortress 3.0 with MXUS 3000 4T motor, 24s lipo, 96V 60A controller. Total cost with extras <$700. Top speed ~50mph
My videos https://www.youtube.com/channel/UC0KW4U ... _G2wQhptMg

Danschutz   10 W

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Re: Throwing down the gauntlet!

Post by Danschutz » Jul 13 2014 3:54am

Excellent video Drunkskunk!

drew12345   10 kW

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Re: Throwing down the gauntlet!

Post by drew12345 » Jul 13 2014 6:36am

You guys should download RaceRender application and add gps data so you can display speed and grade of hill. The example below gets speed and grade from garmin. Rest is from cycle analogger. I am trying to make video of how to do but having trouble getting desktop recorder outputting video with good resolution. I think it's the crappy free desktop recorders I'm trying.


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wesnewell   100 GW

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Re: Throwing down the gauntlet!

Post by wesnewell » Jul 13 2014 10:56pm

The rest of the videos.

Need Advice? https://endless-sphere.com/forums/viewt ... =3&t=66302
Mongoose 26" Ledge 2.1 mtb bike $99, yescomusa.com 48V 1000W rear hub kit $200, Hua Tong 72V 40A controller $35, 10ah 24s lipo $217=~43mph, range=45 miles @ 20mph. 25K miles and still going strong.
Huffy Fortress 3.0 with MXUS 3000 4T motor, 24s lipo, 96V 60A controller. Total cost with extras <$700. Top speed ~50mph
My videos https://www.youtube.com/channel/UC0KW4U ... _G2wQhptMg

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arkmundi   1 GW

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Re: Throwing down the gauntlet!

Post by arkmundi » Jul 14 2014 12:05am

drew12345 wrote:You guys should download RaceRender application and add gps data so you can display speed and grade of hill. The example below gets speed and grade from garmin. Rest is from cycle analogger. I am trying to make video of how to do but having trouble getting desktop recorder outputting video with good resolution. I think it's the crappy free desktop recorders I'm trying... [youtube]yEUMumi9clw
That's frick'n amazing dude. Feel like I just struck gold in ESLand. I've gotta getme one of those!

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MadRhino   100 GW

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Re: Throwing down the gauntlet!

Post by MadRhino » Jul 14 2014 7:20am

izeman wrote:...there won't be any paved road you can't climb with a 2kw+ mid drive in first gear i guess.
I guess 250 watts could do it too if geared down enough. Yet it is about how fast one can climb, and 2Kw will be very slow up a steep hill.

Mid drives do have an neat advantage at climbing, but they need to be built with a big motor to be good at speeding.
Make it fool-proof, and I will make a better fool.
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Street: https://s20.postimg.org/ewrvugywt/Session_04_2015.jpg
Dirt: https://s20.postimg.org/lbqwr55ml/IMG_0157.jpg

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izeman   100 GW

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Re: Throwing down the gauntlet!

Post by izeman » Jul 14 2014 10:07am

depends on what you call speeding. my dd hub drive does 45mph and is quite fast do my findings. it can do 30mph up a 10% grade. but not for very long before over heating.
my mid drive mac bike does a 30mph but can climb any steep single trail much faster than anyone w/o motor could even imagine. and to be honest much faster than i dare to ride it sometimes ;)

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hjns   100 kW

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Re: Throwing down the gauntlet!

Post by hjns » Jul 14 2014 10:45am

https://vimeo.com/69832668

I guess 45kmh going up a 30% hill takes a lot of energy....
Henk


All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find that it was vanity: but the dreamers of the day are dangerous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence

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cal3thousand   1.21 GW

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Re: Throwing down the gauntlet!

Post by cal3thousand » Jul 14 2014 11:19am

Great video DS! Quite enjoyable to watch and listen to. Apparently you have skills beyond the ebike.

I have a couple hills around here that might be of fun challenge. One is a longer car 'hill' that is not ultra steep, but has a good elevation change and it should test out the long term heat handling.

And the other is a short but super steep hill that I'm a bit apprehensive to approach until I get more comfortable with my bike
Get a Cycle Analyst and a Multimeter, you're still a noob if you don't have at least one of each.

Planning on posting questions or buying anything on this site? Put up your country (at minimum) on your profile. This is a worldwide forum and we haven't reached clairvoyance.

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dogman dan   100 GW

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Re: Throwing down the gauntlet!

Post by dogman dan » Jul 15 2014 6:36am

It's pretty amazing what a typical 28mm hubmotor can do, with 1000w. ( running it on 48v, 22 amps controller) In those vids I put on you tube, I'm riding a slow turn motor, and giving it 3000w.

In general, it's extremely difficult to not wheelie off the bike once you are riding up 20 degrees. What stops me is generally wheel slip, which is then followed by a wheelie when it grabs again. Or, just losing ability to hang on, when the rocks get to grapefruit size. I don't have the strength I had when I was 25, and had a trials motorcycle.



Yesterday, I went out and did something I'd never actually tried before. I took the new version of the E-bikekit direct drive kit and rode the same single tracks in some of those videos. Mostly about 6 degree grade, or 10% with some short 15% bumps. But the rocky gully is about 300 vertical feet of continuous 15 degrees, which is 27 % !!!! You never see many that pedal ride up it, it's the go down route. No proof of the grade other than my word, but I did actually measure it with an angle finder. Not my first time doing this, I used to measure grades of backcountry ski slopes, and know how to do it accurately.

The stock E-bikekit goes up the 10% stuff without pedaling of course. We know it can do that, always have known that. But with hard pedaling, it also climbed the 27% with no problem whatsoever!!! Frankly, I was pretty amazed, other "ordinary" ebikes I have taken up that hill had me getting off and pushing it up. Aotema (36v) couldn't do it, Heinzmann (24v) couldn't do it, Fusin (48v) couldn't do it. But the 28mm 9 continent/muxus type Ebikekit ran up it easily.

It's not ideal, at the top of the entire ride, about 5 miles mostly uphill, the motor was at least twice as hot as a slow motor would be. But it didn't melt, and made it up 15 degree slope without having to get off and walk. Pretty amazing I thought. I knew I could get up 15% with pedaling, but 27%??? I didn't really expect it to go up that gully.

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Drunkskunk   100 GW

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Re: Throwing down the gauntlet!

Post by Drunkskunk » Jul 15 2014 10:24am

All great videos! I'm really liking those overlays as well. Anyone have a link for a "how to" on those?

I think I found a cure for the way cameras flatten out hills. In this thread someone had suggested a camera gimbal. I'm going to try one and see if it will keep the camera level.

I know we'd kicked around the idea of a spirit level for ebikes that gave the slope of a hill. I'd been working on a miniature one that would go around the handle pars, but gave it up when I found an app for my phone that worked even better. There's a free version for android. no idea if it's free on apple.
https://play.google.com/store/apps/deta ... eter&hl=en
https://itunes.apple.com/us/app/clinome ... 15117?mt=8
Good app, and works as accurately any hand held angle finder I've used. Kind of funny, though. I tried to use it on that road in my video. The road was steep enough that the phone kept sliding down the road. I had to run and dive for it as it was sliding away at one point. How often have you had to chase your phone down the road? Maybe I'm glad the camera wasn't on.

Anyways, keep the videos coming!
Buy the ticket, take the ride.
Monster Bike:http://endless-sphere.com/forums/viewto ... =6&t=38667

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