ADVrider

Go Back   ADVrider > Bikes > Some Assembly Required
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 10-06-2011, 09:53 PM   #106
MortimerSickle
Semi-Adventurer
 
MortimerSickle's Avatar
 
Joined: Dec 2005
Location: Rainville, Orygun, where moss is a road hazard.
Oddometer: 11,677
Quote:
Originally Posted by oregoncoast View Post
What about making an electric vintage trials bike? Ever thought of that?
__________________


I miss round headlights.

"When I was a young man, I liked to race my horse...." -
G.H.W.S. 1878-1962
MortimerSickle is offline   Reply With Quote
Old 10-07-2011, 08:20 AM   #107
knary
sunshine and puppies
 
knary's Avatar
 
Joined: Jun 2002
Location: portland, or
Oddometer: 29,352
Quote:
Originally Posted by Luke View Post
No.

As in, I'm working on it but it's not ready yet.


A couple things come to mind, but I don't know what the hell I'm talking about.
__________________
Artist, Father, Etc | Oil & Piston

Go Jane Go - Analog Jane and her three chamber heart

Goodbye Toolfan
knary is offline   Reply With Quote
Old 01-02-2012, 10:35 AM   #108
rayivers
n00b
 
rayivers's Avatar
 
Joined: Dec 2011
Oddometer: 2
EVDrive e-Moto-CRF250R

Incredible job on the bike, and great thread! 8 pages and counting of high interest, helpful/supportive comments, and zero hate - ThumperTalk could sure learn a lot from this place. :>)

I just put down an initial deposit on one of these - it's like a dream come true for me, I hope they can find 49 more people who feel the same:

http://www.evdrive.com/prototypes/ca...-moto-crf250r/

They're not cheap, but the KTM Freeride E and BRD's (https://www.faster-faster.com/bikes.html ) won't be either, when they finally get around to producing them.

It'll be so cool to finally be able to just ride, and not broadcast.

Ray
__________________
'75 MR175 (plated), '74 CR125M (175cc, plated), '82 RM250Z, '08 YZ250F
rayivers is offline   Reply With Quote
Old 05-14-2012, 07:03 AM   #109
dentvet
Beastly Adventurer
 
Joined: Aug 2008
Location: hunt country virginia
Oddometer: 1,216
Anything new for MY2012?
dentvet is offline   Reply With Quote
Old 09-12-2012, 07:18 PM   #110
rainmaker8
Adventurer
 
rainmaker8's Avatar
 
Joined: Jun 2006
Location: Hudson Valley, NY
Oddometer: 78
nice project.

I've been toying with the idea of building my own electric moto. Even got a spare rolling chassis waiting...
But it's a slightly larger frame intended to perhaps hold more battery packs and potentially hit the road for dual sports but longer range is like the electric vehicle holy grail... there's always a weight and cost compromise!

How are you dealing with the waterproofing?
I noticed you tiptoed around those mud puddles last year in the video...
Obviously the controllers and such need protection, but what about the motor?
Is a brushed motor more susceptible to moisture damage?

keep up the good work!
I'm so excited to start mine...


T
rainmaker8 is offline   Reply With Quote
Old 09-15-2012, 01:21 PM   #111
Luke OP
GPoET&P
 
Luke's Avatar
 
Joined: Aug 2004
Location: Idiotville, OR
Oddometer: 4,052
As a very belated update,the YZ has its gas motor back in. Its nice how similar the handling is between the two setups. I'm not willing to add all the extra weight to get decent trail range, so I'm going to put the same electric parts in a trials chassis. The changes I made to the controller should work well for trials riding.


The YZ had almost no water protection, it would be necessary for anything ridden off road regularly. I'd expect dust to be bad for the brushes too.
It's fun building, good luck. If you're willing to get the bike up to DS or ADV weight then you'll get much better range.

The CRF looks really nice. Their packaging is impressive. Two parallel motors must be awesome, hopefully it works better for them than on the Motocycz IOM bike.
Luke is offline   Reply With Quote
Old 12-02-2012, 12:41 PM   #112
azcagiva
new orange flavor
 
azcagiva's Avatar
 
Joined: Apr 2007
Location: Camp Verde, AZ
Oddometer: 1,136
Hey Luke,

Have you checked out the forum "endless sphere"?

I have a friend that is quite knowledgeable in the electric bike propulsion deal.

If you want I can give you his email.

I talked to the dude that has the electric class one buggy, he should be running it in the upcoming NORRA race.

-John
__________________
An Elefant never forgets.

www.Raceforthewounded.com
azcagiva is offline   Reply With Quote
Old 12-03-2012, 12:21 AM   #113
Luke OP
GPoET&P
 
Luke's Avatar
 
Joined: Aug 2004
Location: Idiotville, OR
Oddometer: 4,052
Quote:
Originally Posted by azcagiva View Post
Hey Luke,

Have you checked out the forum "endless sphere"?

I have a friend that is quite knowledgeable in the electric bike propulsion deal.

If you want I can give you his email.

I talked to the dude that has the electric class one buggy, he should be running it in the upcoming NORRA race.

-John
Hi John,

I have seen endless sphere, lots of good ideas there.

Always good to talk to people, if you'd send me his email that'd be great. Unfortunately I've got some plans for this bike but no time to fit them it. But avoiding potential mis-steps would be really nice.

I was thinking of trying some different cells, and now that A123 has gone bankrupt I may have no choice.


I'd love to see that buggy at the MX1k, I hope they make it.
Luke is offline   Reply With Quote
Old 12-03-2012, 10:43 AM   #114
YamaGeek
Ancient trailbike padwan
 
YamaGeek's Avatar
 
Joined: Jun 2007
Location: western oregon
Oddometer: 5,934
Wow Luke, very nice! wonderful documentation on what you did and the problems and solutions you came up with. E bikes are still evolving some, it's really a shock to hear that A123 has gone bankrupt, they were the cell of choice for serious big scale RC model aircraft.

Some random thoughts from someone who's been in the RC hobby and has made a few DIY electric power systems for small model airplanes.

The brushed motor you used , was it rare earth magnets or Ferrite? there's a bit of efficiency gains, small, but significant to using Neodym or Cobalt over Ferrite.

A lot of what has happened in the past 12 years in RC has been the flood of cheap and relatively well designed brushless DC motors, the brushless controllers are now using a sense circuit off of the power output that detects the motor poles/magnets and synchs the controller up to the motor. They still haven't made the initial application of power on these motors smooth enough to work well for vehicles yet, ( I believe this to be true..) So the best bet for BL vehicle motors will have sensors in addition to the 3 power leads, I'm suspecting that this is what is mostly available off the shelf for brushless powered E-vehicle motors.

Most BL motors are form of 3 phase AC synchronous using rare earth magnets, they've gotten to the point where the designs can be made to turn just about any power output and RPM needed. You're probably well versed in the variety of motors available for E-bike conversions, so don't mind me just thinking out loud.

Have you thought of changing to a lighter form factor like a sturdy suspended MTB? You might increase the run times and not have to resort to such a large motor. Considering what you've achieved maybe the trials bike is the best compromise for weight?

quite awesome, subscribed.
__________________
____________________________________________
We're here because of a love most exestential. (toothy)


YamaGeek is offline   Reply With Quote
Old 12-06-2012, 01:33 AM   #115
Luke OP
GPoET&P
 
Luke's Avatar
 
Joined: Aug 2004
Location: Idiotville, OR
Oddometer: 4,052
I actually don't know what sort of magnets are in the motor. I just know it has lots of power for its weight.

I avoided brushless motors because they didn't seem to offer any performance advantages and the drive system is way more complex. The complexity isn't such a big deal if you're going to stick with a puchased controller, but it is if you want to modify it like I did.
Luke is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 01:07 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014