PROJECT MAYHEM -> Urban Assault Build Thread

Mathurin said:
Well, since you oblige me: Reading about this concept should help you make light about going to a skate park, not doing tricks and then calling the other dudes posers.
Click to expand...

Ok Mathurin, listen up dude.
Take the original comment in context. I was pointing out that the kids in the movie were *not* the highly talented "space monkeys" that I was talking about. I jokingly pointed out that "we used to call them posers"... That is exactly what they are and what they were doing. It does not matter whether I am a poser or not.

Now.... You want to talk about a poser. . . You spend your time rolling around my build thread hating on me and correcting my comments. You can kiss my ass.

I am going to award you something special. . .

assclown.jpg


Now beat it dick, I am tired of your pompous, smart ass comments.

-methods
 
Well said Methods ;) Nothing pisses me off more on a forum than ass wipes who sit there and criticize others efforts while offering
nothing of value themselves... I did have alot more to say in my previous post to Mathurin but again thought better of it
and deleted the majority of it... least he knows hes a douche bag pitty he feels the need to prove it each time he posts :-S

Happy trails Method :)

Kim
 
pwbset said:
... hope you don't mind...
Click to expand...

Hey, thanks bwbset.
The only editing tool I had was the free one that came with my OS. I tried crunching it down to a smaller size and ended up ruining the frame rate which took away from the feeling of speed in the fast scenes. Your version seems to be of high quality.

-methods
 
Hi Methods,

One thing i've been meaning to say to you and hope you dont take it the wrong way is about your army of space monkeys :lol: - just remember this, the more people you have on ebikes in your area flying around on illegally fast rigs the more likely you are to get closed down pretty soon :( though it seems a little selfish not to share this fantastic hobby with others i live by this moto:
keep it off road, keep it away from people, keep it longer. :)
i dread the day some asswipe kid runs an old dear down at 40mph on an ebike and ruins it for me :evil:
Just a thought.


Cheers,


D
 
Methods

NNiiccee vid!!!

Well done did you use any video image stablizaion software? Cus it was very clean considering all the shaking around.
Or does the Stink just ride that nice?

Also, tuneing the back shock absorber. Advise from an former motorcross RM125 rider.

You want to set it for Min rebound damping. That is the action that pushes the wheel back to the ground from a compressed position. Min setting = max force. Rebound damping limits the friction accociated with sending the wheel from a comprssed position back to the fully suspended position. So you want to make this have as little friction as possible.
And max compression damping. Opposite action. Gota put more power into the shock to slow it down cuz you got 25 more ponds comming at ya.

The spring sould be dialed in pretty stiff. Or even consider going with a different spring (if they have one) to compensate for the extra sprung weight.

The challenge is to dial this in without making it hop.
 
Well yeah methods, you jokingly pointed to them as posers and it's jokingly that I pointed out the irony of it... No hate intended, guess I shoulda used a wink smiley huh.

And thanks for the award, fuckin' saved!
 
Niiiiiice video Methods!!! That looks like a lot of fun blasting thru the trials, and grass like that.
Gimmie some advice on your camera and how you got it mounted because I'd like to take some cool videos like that my rides too.

-Sacman
 
I am surprised that you guys like the video quality. . . Seems shaky to me.

I used a regular brake pad zip-tied to the handle bar. The threads are close enough to mount the camera on.

If you want *better* image stabilization mount the camera to your helmet. Your body makes for a great shock absorber. This also allows the viewer to "see as you see".

-Patrick

EDIT: I will do a mini-build thread of my helmet cam when I get home. Just a bolt going through my helmet that screws into the camera.
 
deecanio said:
keep it off road, keep it away from people, keep it longer. :)
Click to expand...


You know what man, you are absolutely right. I am torn. I 100% believe that someone will screw it up for all of us eventually. . . At the same time I want to do my part to spread the good word.

When it does happen, it will be all about stealth. That can be fun too I guess.

-methods


EDIT: Good news is that if I screw it up here, at least you are in a different country :mrgreen:
 
Method Man, your bike ROCKS.
The video really brought it all home for me. On-road, off-road, in between road, skate park, stair cases. The only thing missing is indoor use. But like a good old dog, when you bring him indoors he goes and lays down in the corner.
Anyway, I've been trying to go the RC motor route with my Intense M1 but after seeing your vid, I may have to reconsider. Not that any of this is simple, I just don't know if I can wait that long and may go with the RCM on my next project. Although unsprung weight is my enemy. Hmmmm.
Happy Thanksgiving to All,
Rob
 
Method,

Nice build and documentation,thanks for sharing. I am a little old for the space monkey program (nice ref btw, FC is my favorite movie) but due to my advanced age I do have the funds to build something similar and have many years experience with ICE dirt and street bikes. I am in Concord, CA. Any chance I could stop by and check out the build and get some advice for my project? I have plenty of time for research as I have a full arm cast from an accident on the previously mentioned ICE dirt bikes.

I will PM you my contact info.

Adam
 
Sure, I replied.

Perfect timing as next week I will be replacing the hall sensors in the X5 (good with the bad right?) and my new kit will be showing up for the chopper bike.
I will let you ride the chopper and get a feel for what a nine continents kit on 50V w/20A current limit feels like compared to a 100V X5 with no current limit.

btw: Anyone else who is local to the Bay Area or Livermore is welcome to come by any time and talk about ebikes, Flying RC, EV's in general, electrical engineering/projects, or any other sort of DIY mayhem.

-Patrick
 
methods said:
btw: Anyone else who is local to the Bay Area or Livermore is welcome to come by any time and talk about ebikes, Flying RC, EV's in general, electrical engineering/projects, or any other sort of DIY mayhem.

-Patrick
Click to expand...

Would love to take you up on that offer Methods....pitty i am 20 000 kilometers away LoL..Any other Perthites want to drop by my garage for chat are more than welcome...always a beer in the fridge :)
 
If I lived in your hood I would be creep'n by at night waiting for you to leave that other trike out on collections night. . .

-methods

EDIT: Wow, Just saw your trike build thread for the first time. Those trikes are bad ass! My favorite is the picture where you are wearing your socks out on the wet cement with puddles all around =) Man. . . I need to get my welding gear out. After seeing all that I am really jealous. I need to build something ridiculous.

I am thinking (stolen from your ideas) that I want to build a go-kart out of 2 or 3 busted up bikes. That would be sick . . Do one of those "on the cheap" projects where the rules are that I can only use parts that I already have, found in dumpsters, or built from scratch.

120V X5 Go-kart !!!

-methods
 
Ok, parts ordered.

I ordered 6 hall sensors and 2 thermistors from Digikey.
When I replace the halls I will install the RTD and set the Kelly to roll back the power when the temperature gets up near "hall fry" temperature.

As far as new wire gauge. . . I guess I will shoot for 10g Teflon coated but if I cant find any I will have to go with 12g Teflon coated. It is a shame because I have about 3 miles of 10g noodle wire sitting round. . . Damn sleeve on that is about 5mm thick though!

-methods
 
Methods,

Sorry to hear about your wipe out. Sounded like a pretty catastrophic failure. I am not one to preach, but here goes a little anyway, not just for you but for all newbies out there contemplating how their new ebike projects should take shape....

Due to the fact that we are essentially slapping high power drive systems on platforms that were engineered (by real engineers, I might add) to be used ONLY with human powered stresses and inputs, it is crucial to make sure that the conversions are done in a way that insures against failure due to material fatigue.

We had some nice weather here in the burgh yesterday - 45 and sunny, so I decided to take my bike out for a little romp. Whil e it was charging in the morning, I was going over the machine, and decided to increase the seatpost height a smidge, level the saddle out.

I found that the seat post was CRACKED where it clamps to the saddle rails, on both undersides. This was due to several issues:

1. The seatpost was a Kalloy aluminum brand post, designed to be used with a lightweight MTB saddle
2. I use an Azonic DH saddle on the post, and slid the saddle BACK as far as it can go for more room in the cockpit. The seatpost was not designed to be used with this saddle, as the leverage my 180 pound frame sitting on the back end of the seat was causing some serious stress on the clamping mechanism.
3. The combination of the two items above were a formula for eventual failure, but the time required to reach failure was exponentially decreased due to the increased speeds, increased mass and increased force I am now hurling through time and space at. Took about 1800 miles on my e-set up. Probably could have went for 5-10 years under pedal power only.

Post in th arse. That would not be fun....


Be safe. Over-engineer your systems if you're going to run as much power as you do on mayhem.

Peace,

Len
 
You wont get any arguments from me. Sounds like good advice.
Mayhem has reinforced drops now and that bike is steering down the endless road of over engineering.

That other bike was supposed to be the antithesis of Mayhem, light, simple, low power, etc.
No big deal.

The only thing in the design that I will be changing is that I will be welding in a half inch of mild steel on either side of the front fork.

If I were to step up onto my soap box it would be to tell people to over engineer their BRAKES.

-methods
 
VRdublove said:
NASTY BIKE.
WHAT IS THE range like on the kona with 900wh of battery if you are driving reasonably?
ONE MORE QUESTION, what's the bike weigh?
-Tommy
Click to expand...

Lets see. . . Under normal riding i often times end up on the wrong side of 50Wh/mile so that puts me at around 18 miles which sounds about right. If I ride with my wife at peddle speed I draw about 2 - 3A most of the time which is more like 20 - 30Wh (call it 33Wh/mile for simplicity) so that would work out to about 30 miles (which is about right).

Hammering on it significantly drops range since I have no current limit. Stop and go can limit the range to only 5 miles or so. In a normal day I ride to and from work, charge up a couple of AH at home at lunch, drive back to work and back home where I may or may not top off the pack then I will usually go out in the evening for a 20 or 30 minute ride. Ideally a bike this powerful needs another 5AH of capacity to allow me to ride without paying attention to the throttle. When I know I have a long day I have to really concentrate. I can go a few miles on only a couple hundred mah but one burst off the line at a stoplight can dump a ton of capacity.

I wish I knew what it weighed. . . A LOT. It weighs a frigging ton! I put tires on it that weigh more than most dirt-jump bikes. . . I wanted to build a tank and that is what I have.

-methods
 
methods said:
It weighs a frigging ton! I put tires on it that weigh more than most dirt-jump bikes. . . I wanted to build a tank and that is what I have.

-methods
Click to expand...

Mate...its a lightweight compared to my ride, the Australian Army have already expressed interest in it, they want to hang aM134 off the front and a few rocket launchers and use it as an urban assault 'veeeee-hickle' :p
 
You mean that you could not afford to build the entire frame out of Titanium?

pffffft.... And I thought you were cool.


-methods
 
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