Farfle's electromotard. Mk. 4

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Re: Farfle's electromotard. Mk. 4

Post by dbaker » Apr 29, 2013 4:45 am

congrats on a great shakedown run :D Great pit shot with the generator :mrgreen:

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Re: Farfle's electromotard. Mk. 4

Post by John in CR » Apr 30, 2013 12:29 am

Farfle wrote:We had a pretty competitive rider take it for a spin, he was a little doubtfull riding onto the track but after the first lap he was on the hunt catching up and passing a few of the other bikes. 9 laps later when we were finally able to flag him off the track (he went in with a half full battery), he was grinning from ear to ear, the first words out of his mouth, were how much he could get one for, and that that was the most fun he has had on a bike in a long time. (I think we have a convert :mrgreen: :twisted: )
Quote of the year so far! All we have to do is let them experience it. Well, we have to build a great ebike for them to ride like you did.

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Re: Farfle's electromotard. Mk. 4

Post by Tinto » Apr 30, 2013 2:01 am

awesome.
that looks badass.
The chain/brake is freaking me out but I love the squat stance of the bike.
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spinningmagnets
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Re: Farfle's electromotard. Mk. 4

Post by spinningmagnets » Apr 30, 2013 1:48 pm

Did a quick google...a lot of motorcycle guys are starting to call these a "sprotor" (sprocket/rotor)

Image

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Re: Farfle's electromotard. Mk. 4

Post by grindz145 » Apr 30, 2013 2:35 pm

OMG that sprockorotor is sweet! That is one wicked hacked electric monster.

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Farfle
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Re: Farfle's electromotard. Mk. 4

Post by Farfle » Apr 30, 2013 9:15 pm

Thanks all.
Today I got the new dashboard roughed out. It will get a coat of black plastidip when its done.

It lets us:

Watch the Rotor and Stator temperature independently.
Monitor the condition of the liquid cooling system (pump on/off/empty)
It houses the telemetry transmitter and the data logger.

My friend Bartimaeus here on the forum has an Arduino that controls the liquid cooling pump based on the temp of the spinning rotor via a non-contact IR sensor, and the stator via a thermistor. and then mixes it into the serial stream from the CA and sends it via Xbee pro to a laptop where it can be monitored. Its a really slick setup, and lets the rider just worry about riding, and the builders on the sideline worry about the condition of the bike.

Image
The race bike:
24s5p 50c nano tech
Badass custom mofo outrunner 205x177mm 26kv
Peak power in : 420A at 87v
Peak power out: 34 Hp and 105ft/lb

Build to last...
"It will be assaulted by the elements, It will be ravaged by time and it will be destroyed by the user. BUT, if you Stick to the little rules: K.I.S.S., Overbuild everything, and test, review, revise, repeat. It will last"


Team Farfle blog!! http://www.farfleselectrics.blogspot.com

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Farfle
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Re: Farfle's electromotard. Mk. 4

Post by Farfle » May 14, 2013 2:02 am

I just swapped the 1989 yz125 fork for a 2006 yz250 fork, and Its amazing what almost two decades of changes does to a fork, and what still remains the same. For example, the brake bracket was a direct swap, the steertube was a direct swap, and the bottom bearing was the exact same.

The new fork is loads stiffer, and much more adjustable as well.

Image

Image

Image
The race bike:
24s5p 50c nano tech
Badass custom mofo outrunner 205x177mm 26kv
Peak power in : 420A at 87v
Peak power out: 34 Hp and 105ft/lb

Build to last...
"It will be assaulted by the elements, It will be ravaged by time and it will be destroyed by the user. BUT, if you Stick to the little rules: K.I.S.S., Overbuild everything, and test, review, revise, repeat. It will last"


Team Farfle blog!! http://www.farfleselectrics.blogspot.com

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Re: Farfle's electromotard. Mk. 4

Post by Bluefang » May 14, 2013 8:16 am

Looks like some great new bling for the bike :) And a performance enhancement :mrgreen:

Do you know the weight of the bike as it stands now?
Building high powered electric vehicles.
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Re: Farfle's electromotard. Mk. 4

Post by Ctesibios » May 14, 2013 9:24 pm

Fork swap = GOOD! :mrgreen:

The old one seemed pretty soft!

Looking forward to seeing some racing footage!

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jansevr
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Re: Farfle's electromotard. Mk. 4

Post by jansevr » May 15, 2013 11:18 am

i second the motion of racing footage! :lol:

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Farfle
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Re: Farfle's electromotard. Mk. 4

Post by Farfle » May 16, 2013 11:17 am

Ok, ill see what I can do to hack something together. I have all of the raw onboard video rounded together, but I need to go get the pictures and trackside footage from my brother.
The race bike:
24s5p 50c nano tech
Badass custom mofo outrunner 205x177mm 26kv
Peak power in : 420A at 87v
Peak power out: 34 Hp and 105ft/lb

Build to last...
"It will be assaulted by the elements, It will be ravaged by time and it will be destroyed by the user. BUT, if you Stick to the little rules: K.I.S.S., Overbuild everything, and test, review, revise, repeat. It will last"


Team Farfle blog!! http://www.farfleselectrics.blogspot.com

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spinningmagnets
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Re: Farfle's electromotard. Mk. 4

Post by spinningmagnets » May 16, 2013 6:49 pm

I haven't been posting here because I don't have any suggestions or warnings. Just wanted to say that this is awesome, and if I was going to make an E-moto...I would simply copy this.

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Farfle
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Re: Farfle's electromotard. Mk. 4

Post by Farfle » May 16, 2013 11:47 pm

I glommed together a quick video of the highlights on the race, I may make a longer one later with some more onboard footage, but this should be a good teaser of whats to come for Refuel/M1GP :twisted:

Here ya go!

The race bike:
24s5p 50c nano tech
Badass custom mofo outrunner 205x177mm 26kv
Peak power in : 420A at 87v
Peak power out: 34 Hp and 105ft/lb

Build to last...
"It will be assaulted by the elements, It will be ravaged by time and it will be destroyed by the user. BUT, if you Stick to the little rules: K.I.S.S., Overbuild everything, and test, review, revise, repeat. It will last"


Team Farfle blog!! http://www.farfleselectrics.blogspot.com

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jansevr
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Re: Farfle's electromotard. Mk. 4

Post by jansevr » May 17, 2013 11:22 am

nice video. i noticed your description of the video says something about double the horsepower in the mail?! are you getting a new motor?

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Farfle
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Re: Farfle's electromotard. Mk. 4

Post by Farfle » May 17, 2013 11:28 am

jansevr wrote:nice video. i noticed your description of the video says something about double the horsepower in the mail?! are you getting a new motor?
New controller. Going from a 180a cont controller to a 350a cont controller
The race bike:
24s5p 50c nano tech
Badass custom mofo outrunner 205x177mm 26kv
Peak power in : 420A at 87v
Peak power out: 34 Hp and 105ft/lb

Build to last...
"It will be assaulted by the elements, It will be ravaged by time and it will be destroyed by the user. BUT, if you Stick to the little rules: K.I.S.S., Overbuild everything, and test, review, revise, repeat. It will last"


Team Farfle blog!! http://www.farfleselectrics.blogspot.com

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jansevr
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Re: Farfle's electromotard. Mk. 4

Post by jansevr » May 17, 2013 1:17 pm

awesome! :P which one are you going with?

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Farfle
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Re: Farfle's electromotard. Mk. 4

Post by Farfle » May 17, 2013 1:25 pm

Going from the baby size 2 sevcon, to the middle size 4 sevcon.
The race bike:
24s5p 50c nano tech
Badass custom mofo outrunner 205x177mm 26kv
Peak power in : 420A at 87v
Peak power out: 34 Hp and 105ft/lb

Build to last...
"It will be assaulted by the elements, It will be ravaged by time and it will be destroyed by the user. BUT, if you Stick to the little rules: K.I.S.S., Overbuild everything, and test, review, revise, repeat. It will last"


Team Farfle blog!! http://www.farfleselectrics.blogspot.com

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Farfle
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Re: Farfle's electromotard. Mk. 4

Post by Farfle » May 17, 2013 11:48 pm

Woot! 25 Bolt on horsepower!

Image
The race bike:
24s5p 50c nano tech
Badass custom mofo outrunner 205x177mm 26kv
Peak power in : 420A at 87v
Peak power out: 34 Hp and 105ft/lb

Build to last...
"It will be assaulted by the elements, It will be ravaged by time and it will be destroyed by the user. BUT, if you Stick to the little rules: K.I.S.S., Overbuild everything, and test, review, revise, repeat. It will last"


Team Farfle blog!! http://www.farfleselectrics.blogspot.com

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Re: Farfle's electromotard. Mk. 4

Post by EvoBikeShop » May 19, 2013 1:29 pm

Great vid! I hope you didnt scare up that beauty too bad.
My bike (a work in progress) 30mph club on 20's! Sold and missed.........
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MattyCiii
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Re: Farfle's electromotard. Mk. 4

Post by MattyCiii » May 19, 2013 2:02 pm

Farfle wrote: Image
I thought the "spokes" of a disc brake rotor were supposed to be angled forward? I'm no expert but with all that power, hate for there to be a high speed/high power front brake failure!
1st build: Dahon Jetstream folding bike. Quick, reliable, capable of 32mph. Light enough to lift, folds for easy transport by car/bus/train.
2nd build: RC powered 2009 Norco A-Line. Top speed 39mph. Built like a tank, it's resistant to Boston potholes, can stop on a dime, easily goes up/down curbs when necessary.
3rd build (just started): Scratch build ultimate utility bike. Based on a common power module using a NuVinci left side freewheel.

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Farfle
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Re: Farfle's electromotard. Mk. 4

Post by Farfle » May 19, 2013 2:16 pm

MattyCiii wrote:
Farfle wrote: Image
I thought the "spokes" of a disc brake rotor were supposed to be angled forward? I'm no expert but with all that power, hate for there to be a high speed/high power front brake failure!
A disk brake rotors spokes are ABSOLUTELY NOT supposed to point forwards, and the reason is this:

In what direction is a spoke its strongest, tension or compression?

If you answered compression, you have some reading to do. Bike rotors get away with compression loaded spokes because they never experience braking loads severe enough to have to use their structure, and they do it because it looks cool, and therefore sells better.

With the gatorbrake 6 piston calipers on the dual pie. We had two identical rotors, and I had intended to have a spare. While doing some abuse testing in the conventional diection, the front rotor violently shredded apart and tore itself off of the hub. Looking at it, all of the spokes had folded up. When we put the rotor on backwards, it still warped and was thrown away, but there was no violent failure. (The rotors were a magura gustav 210mm, not cheap by any stretch)
The race bike:
24s5p 50c nano tech
Badass custom mofo outrunner 205x177mm 26kv
Peak power in : 420A at 87v
Peak power out: 34 Hp and 105ft/lb

Build to last...
"It will be assaulted by the elements, It will be ravaged by time and it will be destroyed by the user. BUT, if you Stick to the little rules: K.I.S.S., Overbuild everything, and test, review, revise, repeat. It will last"


Team Farfle blog!! http://www.farfleselectrics.blogspot.com

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MattyCiii
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Re: Farfle's electromotard. Mk. 4

Post by MattyCiii » May 19, 2013 2:40 pm

Farfle wrote: A disk brake rotors spokes are ABSOLUTELY NOT supposed to point forwards, and the reason is this:

In what direction is a spoke its strongest, tension or compression?
Got it - I used to question why bikes did it that way. SO much so that I would double and triple check the "mount this way" label/arrow on brakes several times, before mounting them.
1st build: Dahon Jetstream folding bike. Quick, reliable, capable of 32mph. Light enough to lift, folds for easy transport by car/bus/train.
2nd build: RC powered 2009 Norco A-Line. Top speed 39mph. Built like a tank, it's resistant to Boston potholes, can stop on a dime, easily goes up/down curbs when necessary.
3rd build (just started): Scratch build ultimate utility bike. Based on a common power module using a NuVinci left side freewheel.

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Re: Farfle's electromotard. Mk. 4

Post by biohazardman » May 19, 2013 2:59 pm

I had my doubts about the direction of the rotors on bikes as well. So I went out and checked some picks of motorcycle rotors and how they were mounted. This caused even more confusion but I followed the instructions just the same. Still it just did not seen right. Good to know it was not just me. Really impressive werq on the cycle and nice to have all of the information shared for those of us that may undertake something similar someday. Thanks for all of the pics and posts it is appreciated.
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Re: Farfle's electromotard. Mk. 4

Post by Ctesibios » May 19, 2013 9:42 pm

Thanks for the vid! :D

I hope your development keeps going well! :twisted:

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Farfle
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Re: Farfle's electromotard. Mk. 4

Post by Farfle » May 20, 2013 1:27 am

Today I finally weeded out that annoying leaker cell, and traded over the 10Awg Turnigy spaghetti of loose tangled bullet connectors to some 1x50mm nickle plate sheet and ring terminals.

While I had the pack out, I also re-mounted the contactor on the battery tray. So now I can unhook it at the controller, and then just drop the battery, bms and contactor down all at once. Makes it much easier to get at the pack.

Image


Image
The race bike:
24s5p 50c nano tech
Badass custom mofo outrunner 205x177mm 26kv
Peak power in : 420A at 87v
Peak power out: 34 Hp and 105ft/lb

Build to last...
"It will be assaulted by the elements, It will be ravaged by time and it will be destroyed by the user. BUT, if you Stick to the little rules: K.I.S.S., Overbuild everything, and test, review, revise, repeat. It will last"


Team Farfle blog!! http://www.farfleselectrics.blogspot.com

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