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Author Topic: Man, you guys are going to kill me.  (Read 41153 times)

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Offline wannabridin

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Re: Man, you guys are going to kill me.
« Reply #100 on: March 01, 2011, 03:36:09 PM »
my guess is that it's underpowered very much.  standard wet cell batteries just don't have the discharge rates like a good lithium based battery.  doesn't matter how much voltage you feed a motor, if you can't discharge it quickly enough, your motor will run like poop!
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1976 CB750K, currently under construction:
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Offline Sheik Yerbouti

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Re: Man, you guys are going to kill me.
« Reply #101 on: March 01, 2011, 05:48:33 PM »
Quote from: wannabINDUSTRIdin on March 01, 2011, 03:36:09 PM
my guess is that it's underpowered very much.  standard wet cell batteries just don't have the discharge rates like a good lithium based battery.  doesn't matter how much voltage you feed a motor, if you can't discharge it quickly enough, your motor will run like poop!

Yep, which is why all of the performance oriented guys are getting into LiPo due to it's light weight and absurdly high discharge rates. HobbyKing has some that discharge at rates like 40C which is insane.
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Offline Raef

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Re: Man, you guys are going to kill me.
« Reply #102 on: March 01, 2011, 08:12:10 PM »
Quote from: Sheik Yerbouti on March 01, 2011, 05:48:33 PM
Quote from: wannabINDUSTRIdin on March 01, 2011, 03:36:09 PM
my guess is that it's underpowered very much.  standard wet cell batteries just don't have the discharge rates like a good lithium based battery.  doesn't matter how much voltage you feed a motor, if you can't discharge it quickly enough, your motor will run like poop!

Yep, which is why all of the performance oriented guys are getting into LiPo due to it's light weight and absurdly high discharge rates. HobbyKing has some that discharge at rates like 40C which is insane.
I have a several of the 2 cell turnegys? (blue shrink wrap) 7.4-40 c 2200 ma bat from Hobby king for my 12th scale rc car they are very nice I bought a total of 20 I kept 5 or 6 sold the rest at the r/c track.

when I first started racing you had to gear the car to last the race duration (with ni-cads) now with li-po's you gear it to not burn up the motor and you can often run the same battery both heats and the main, huge difference.

Mark
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Offline OldSchool_IsCool

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Re: Man, you guys are going to kill me.
« Reply #103 on: March 04, 2011, 07:02:54 AM »
Tagging up to follow this project!
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Offline Sheik Yerbouti

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Re: Man, you guys are going to kill me.
« Reply #104 on: March 04, 2011, 12:01:54 PM »
Quick MDF mockup of the motor mount. I'll get a chance to see how it works later today, if the rain ever stops.



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Offline Sheik Yerbouti

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Re: Man, you guys are going to kill me.
« Reply #105 on: March 04, 2011, 02:19:01 PM »
Is it okay to leave the tubular frame open where I chopped it in the back, or should I seal those shut?
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Offline MasterChief750

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Re: Man, you guys are going to kill me.
« Reply #106 on: March 05, 2011, 10:55:03 PM »
i would seal it in some way. at least make an attempt to keep corrosion at bay. its what i would do.
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Offline Syscrush

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Re: Man, you guys are going to kill me.
« Reply #107 on: March 05, 2011, 11:03:49 PM »
Quote from: masterchief1112 on March 05, 2011, 10:55:03 PM
i would seal it in some way. at least make an attempt to keep corrosion at bay. its what i would do.
Same here.  I mean, why invite disaster?

It may or may not help, but I'd shoot or pour a bunch of POR 15 or Tremclad in there too before closing it up.
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Life is precious: wear your f'n helmet!
There's nothing more expensive than a free bike...
FWIW, I'm not a shill for Race Tech - I've just got a thing for good suspension and the RTCE's are the most cost-effective mod for these old damping rod front ends.

Offline Sheik Yerbouti

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Re: Man, you guys are going to kill me.
« Reply #108 on: March 31, 2011, 01:36:22 PM »
Okay woooooh change of plans. I did some more work with my electric motorcycle spreadsheet and was disappointed about the lack of performance from the lead acid batteries. So I went back into my 3D model and started playing around with different chemistries, seeing what I could fit into my frame. I settled on these.







These batteries will literally triple my range and last atleast 10 times as long (recharge cycles), but cost about 3 times more. I'd be able to get around 30 miles to a charge no problem, but less if I ride like a hooligan. The batteries would fit into the frame like so:





The pack is about 11" wide, which I don't think should affect riding position very much. Keeping the pack together in a block makes mounting the pack simpler and lighter.


Each cell will have one of these guys.





Those work as a battery management system, meaning they prevent overcharging and over-discharging and some basic cell balancing/thermal monitoring. You buy a relay that turns off the charger when the cells read over a certain voltage, preventing overcharging (and fires). It also prevents me from over-discharging and damaging the cells.


The good news is they last up to something crazy like 3000 cycles, compared to the 300 of lead acid batteries.


And you can keep an eye on all of it with 3 of these.







This is getting kind of crazy
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Offline Syscrush

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Re: Man, you guys are going to kill me.
« Reply #109 on: March 31, 2011, 01:40:46 PM »
Quote from: Sheik Yerbouti on March 31, 2011, 01:36:22 PM
This is getting kind of crazy
In a good way.  Lead-Acid sucks and doesn't save you any money past the medium-term.  Good on ya!
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Life is precious: wear your f'n helmet!
There's nothing more expensive than a free bike...
FWIW, I'm not a shill for Race Tech - I've just got a thing for good suspension and the RTCE's are the most cost-effective mod for these old damping rod front ends.

Offline Sheik Yerbouti

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Re: Man, you guys are going to kill me.
« Reply #110 on: March 31, 2011, 01:57:55 PM »
Quote from: Syscrush on March 31, 2011, 01:40:46 PM
Quote from: Sheik Yerbouti on March 31, 2011, 01:36:22 PM
This is getting kind of crazy
In a good way.  Lead-Acid sucks and doesn't save you any money past the medium-term.  Good on ya!

The pack is the same weight and twice the capacity. As much as I'd love to spring for a 60AH pack, I don't think I could fit it into the frame cleanly without a lot of headache.

Does anybody have a supersport tank so they can take a quick measurement for me? I need to know how wide it is at the back where it narrows a bit for the legs. I'd do it myself but unfortunately my bike is 300 miles away from me right now.
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Offline scroggins5000

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Re: Man, you guys are going to kill me.
« Reply #111 on: March 31, 2011, 02:40:44 PM »
That's great that you decided on some better batteries. I think it will definitely be worth it!
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Offline Sheik Yerbouti

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Re: Man, you guys are going to kill me.
« Reply #112 on: April 03, 2011, 03:46:39 PM »
Started on the wiring diagram. This doesn't include the 12v system. It's starting to get complex. Still needs labeled and finished, but this is the bulk of it.



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Offline Sheik Yerbouti

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Re: Man, you guys are going to kill me.
« Reply #113 on: April 06, 2011, 07:00:57 PM »


First real draft of the diagram. If you need a higher res version to see it well enough let me know and I'll link to one. If you see anything real bad let me know. I'm going to do more research on the throttle stuff and I'll see what I can find.

Edit: Link to full size PDF

Click Here
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Offline Syscrush

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Re: Man, you guys are going to kill me.
« Reply #114 on: April 06, 2011, 09:46:41 PM »
Quote from: Sheik Yerbouti on April 06, 2011, 07:00:57 PM
If you see anything real bad let me know.
The buzzer looks too small - should be a siren or something. ;)
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Life is precious: wear your f'n helmet!
There's nothing more expensive than a free bike...
FWIW, I'm not a shill for Race Tech - I've just got a thing for good suspension and the RTCE's are the most cost-effective mod for these old damping rod front ends.

Offline Sheik Yerbouti

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Re: Man, you guys are going to kill me.
« Reply #115 on: April 07, 2011, 03:50:00 PM »
Quote from: Syscrush on April 06, 2011, 09:46:41 PM
Quote from: Sheik Yerbouti on April 06, 2011, 07:00:57 PM
If you see anything real bad let me know.
The buzzer looks too small - should be a siren or something. ;)

LOUD PIPES SAVE LIVES!!!!!!!!!!!!!!!!!!!!!
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Offline Sheik Yerbouti

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Re: Man, you guys are going to kill me.
« Reply #116 on: April 08, 2011, 03:05:11 PM »
I may be able to hook up a small audio system so I can rock out to some tunes and gain a bit of road presence. I don't really want to get hit by a car. Not right now atleast.

Corry did that on his Ninja conversion.

http://www.evalbum.com/1407
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Offline TwoTired

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Re: Man, you guys are going to kill me.
« Reply #117 on: April 08, 2011, 03:09:54 PM »
Quote from: Sheik Yerbouti on April 07, 2011, 03:50:00 PM
Quote from: Syscrush on April 06, 2011, 09:46:41 PM
Quote from: Sheik Yerbouti on April 06, 2011, 07:00:57 PM
If you see anything real bad let me know.
The buzzer looks too small - should be a siren or something. ;)

LOUD PIPES SAVE LIVES!!!!!!!!!!!!!!!!!!!!!

And solidifies the general populace into a universal hate of motorcyclists, and the forced intrusion into their lives.

...More legislation to come...
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Offline Sheik Yerbouti

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Re: Man, you guys are going to kill me.
« Reply #118 on: September 25, 2011, 05:08:04 PM »


This project was at a standstill, with college occupying every free moment I had. I expected this quarter to be the same, because I was going to be interning out of town. Well, the company I am interning for actually specializes in electric vehicles (fork lifts in particular), and my manager is a motorcycle enthusiast. They told me to go down and get my bike, and granted me access to the shop after hours. So on Saturday I made the 100 mile trip down to Cincinnati to grab the big pieces. This project is getting kicked into overdrive.
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Offline lucky

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Re: Man, you guys are going to kill me.
« Reply #119 on: September 25, 2011, 09:40:18 PM »
The drawings already look ugly.

Try to keep it looking like a regular motorcycle just like the one in the video that you posted. BTW.... That silver bike in the video is the best electric I have seen. Iy looks like a motorcycle should look.

You will notice he did not say how much it all weighed.
The CB750 is about 500 lbs.

That silver bike had 6 batteries probably the size of a car battery.

The problem is the range and if you charge the bike during peak utility hours in the evening you will get charged a lot of money.

An electric bike NEEDS a sound system so people can hear it coming. Matter of fact some laws are being changed to make that happen because so many people have stepped in front of electric vehicles and HAVE BEEN KILLED because they did not hear them.
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Offline lucky

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Re: Man, you guys are going to kill me.
« Reply #120 on: September 25, 2011, 09:46:50 PM »
This bike is already being built.
Go to http://www.dotheton.com/forum/index.php?topic=22815.0

Do not build something this ugly! PLEASE!!!
The Brammo whatever.
« Last Edit: September 25, 2011, 09:56:31 PM by lucky »
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Offline Retro Rocket

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Re: Man, you guys are going to kill me.
« Reply #121 on: September 25, 2011, 10:29:53 PM »
Quote
This bike is already being built.
Go to http://www.dotheton.com/forum/index.php?topic=22815.0

HAHAHA... Thats the same bike mate..... ;D
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Offline Terry in Australia

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Re: Man, you guys are going to kill me.
« Reply #122 on: September 26, 2011, 02:35:41 AM »
Quote from: Retro Rocket on September 25, 2011, 10:29:53 PM
Quote
This bike is already being built.
Go to http://www.dotheton.com/forum/index.php?topic=22815.0

HAHAHA... Thats the same bike mate..... ;D

Ha ha, they call him "Lucky" Mick, as in "lucky for his mom, he wasn't a twin" ............... ;D
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Offline Raef

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Re: Man, you guys are going to kill me.
« Reply #123 on: September 26, 2011, 05:59:11 AM »
Quote from: lucky on September 25, 2011, 09:40:18 PM
The drawings already look ugly.


An electric bike NEEDS a sound system so people can hear it coming. Matter of fact some laws are being changed to make that happen because so many people have stepped in front of electric vehicles and HAVE BEEN KILLED because they did not hear them.

looks are subjective and one has to find function before form matters, unless your building a piece for the gallery

as far as the cost to charge the batteries, most places in the US don't have meters that discern what time the electricity is being used unless you request it due to having an off peak furnice or water heater and I am starting to see many free charging stations pop up, even here in nowhereville Indiana especially around Ball State

people getting killed by electric cars, bikes and buses = natural selection, pay attention.  Ca is a ridiculous place with a ridiculous amount of legislation
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Offline jaguar

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Re: Man, you guys are going to kill me.
« Reply #124 on: September 26, 2011, 06:52:16 AM »
This should be a fun project
I interned here
http://wheels.blogs.nytimes.com/2011/04/01/brooklyn-motorized-electric-with-a-jolt-of-retro-style/

Bike was great around NYC
as far as people getting killed because they couldnt hear a vehicle......uuuummmmm thats why your mommy told you to LOOK both ways before crossing
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