LMX P2 : Freeride trials motorcycle frame development

Discussions related to motors other than hub motors.
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Relanium   10 W

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by Relanium » May 30 2016 12:05am

Do u wash that with water?

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bzhwindtalker   1 MW

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by bzhwindtalker » May 30 2016 3:37am

Yep its all clean now, our battery have drain holes and the kelly controllers have waterproofed connectors. Things can happen tho !

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adriftatsea   100 W

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by adriftatsea » May 31 2016 4:01am

The prototype LMX is still one of the coolest looking ebikes to date. Love the progress and all the videos. Keep it up! 8)
macribs wrote:
bzhwindtalker wrote: too bad those brakes are not manufactured any more!
hope mono 6 ti with even bigger rotor up front 242 mm front. Also 6 piston.
I based my latest build around Hope Mono6Ti 225mm front and back - because, well, 6 pistons are awesome and I too prefer rear braking vs lots of front fork dive.

Macribs is right, they are easy to find used. However, the mounts are NLA and need to contact Hope directly to have a custom batch made. And when I said I built my bike around the brakes, that meant using an older front fork. The reason is that 'IS->225mm' adapters exist and 242mm I think is only available with a 'boxer' or 'world cup' style post mount which only lasted a few years about a decade ago. There isn't any way to use them with a modern post mount fork. So I found an older Fox40 w/ an IS mount (2008'ish) and rebuilt it.
[Santa Cruz Heckler] - Tangent 80:1 RC mid-drive, 12s 16ah, 44t, clutched derailleur, Fox 40/dhx5, Hope mono6ti. Pic: http://imgur.com/XAt85di
[e-kart/buggy thing] - ME1003, Alltrax 7245, 400a, 20s60ah (leaf modules), CA3. Pic: http://imgur.com/ZOpCJ6I
[Bad Boy Buggy XT] - Dual DC motors, Curtis 1268 @ 400A/ea, 14s120ah leaf modules, CA3

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by neptronix » Jun 03 2016 10:42pm

Hey man, i just wanted to congratulate you on getting this out there for sale. I've always been a big fan of your bike. One day i hope to own one!
"Love and compassion are necessities, not luxuries. Without them, humanity cannot survive." - Dalai Lama

My first major build: 1.6kW 8T MAC motor on a Trek 4500 MTB.
Monster MTB: Leafmotor 1500w @ 4kW on a Turner O2 full suspension.
The monster scooter: Heavy duty Cannondale semi recumbent - under construction.
Blue Dream: Maxaraya FS semi recumbent and high efficiency mid-drive - under construction.

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bzhwindtalker   1 MW

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by bzhwindtalker » Jun 09 2016 1:28pm

Thanks Nep, much apreciated. Also this project is not only my work but also work of Lucas on upping the fabrication quality :roll:

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joostj   100 W

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by joostj » Jun 12 2016 8:32am



First time doing a video, so not sure it will work.

It's fun to see friends try ebikes for the first time. Most underestimate the touque and power...no matter how much pre-ride training you do.

My LMX is done. I am planning on doing a build thread one of these days.
Last edited by joostj on Jun 12 2016 8:39am, edited 1 time in total.

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Miles   100 GW

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by Miles » Jun 12 2016 8:37am

Like this: [youtube]g48hZ-892RM[/youtube]

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joostj   100 W

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by joostj » Jun 12 2016 8:40am

Thanks Miles. That would have taken me all day to figure out.

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bzhwindtalker   1 MW

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by bzhwindtalker » Jun 12 2016 8:52am

Haha good one Joost, hope no one was hurt!

That kind of accident is the reason why we only use thumb trottles. We have been able to do good enduro rides with total noobs (with the girls too) with those throttle type :) also we like how asfe they are on downhills.

Adam

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macribs   1.21 GW

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by macribs » Jun 12 2016 8:57am

Epic video. :lol:
"I was born to do this" she says and then it all goes wrong.

Hope you can get her to ride again and that there was no damage to the rider.

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by skeetab5780 » Jun 12 2016 9:30am

That video is almost as good as lukes. I wasn't expecting that at all since she was creeping so slow. Thumb throttles are good until your a few miles into the ride, then im wanting my half twist back

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joostj   100 W

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by joostj » Jun 12 2016 9:33am

That kind of accident is the reason why we only use thumb trottles.
That a great tip. I would eventually love to have a loaner bike set up that way.

I think I would have a hard time getting used to a thumb throttle. Swtching back and forth from the motocross gasser to the ebikes.

I also flip my brakes, so the front is on the right..muscle memory

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Willow   10 kW

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by Willow » Jun 12 2016 5:18pm

joostj wrote:
It's fun to see friends try ebikes for the first time. Most underestimate the touque and power...no matter how much pre-ride training you do.

My LMX is done. I am planning on doing a build thread one of these days.
....when you re-build your bike!

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bzhwindtalker   1 MW

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by bzhwindtalker » Jun 13 2016 5:31am

Exemple of setup with the kelly style thumb throttle, quite confortable setup.
Image

Image

Image

Image

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by cheekybloke » Jun 13 2016 9:49am

adriftatsea wrote:The prototype LMX is still one of the coolest looking ebikes to date. Love the progress and all the videos. Keep it up! 8)
macribs wrote:
bzhwindtalker wrote: too bad those brakes are not manufactured any more!
hope mono 6 ti with even bigger rotor up front 242 mm front. Also 6 piston.
I based my latest build around Hope Mono6Ti 225mm front and back - because, well, 6 pistons are awesome and I too prefer rear braking vs lots of front fork dive.

Macribs is right, they are easy to find used. However, the mounts are NLA and need to contact Hope directly to have a custom batch made. And when I said I built my bike around the brakes, that meant using an older front fork. The reason is that 'IS->225mm' adapters exist and 242mm I think is only available with a 'boxer' or 'world cup' style post mount which only lasted a few years about a decade ago. There isn't any way to use them with a modern post mount fork. So I found an older Fox40 w/ an IS mount (2008'ish) and rebuilt it.
Re. 6 pot brakes, A 203mm rear I.S. to post adapter will fit a 225mm rotor on the front.
As for using post mount i had to fab my own up
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skeetab5780   10 MW

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by skeetab5780 » Jun 18 2016 7:21am

That thumb throttle does look pretty nice compared to the vertical ones I am familiar with. Still not sure if it will replace a half twist for me though

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bzhwindtalker   1 MW

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by bzhwindtalker » Jun 25 2016 6:37am

Image

Image

testing the watercooled motor setup this AM :D


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macribs   1.21 GW

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by macribs » Jun 27 2016 12:08pm

More details about the water cooling pls. How much lower temperatures did you see compared to stock cooling?

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by bionicon » Jun 28 2016 12:53pm

If You sell the watercooling...i am candidate :lol:

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DasDouble   100 kW

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by DasDouble » Jun 28 2016 5:18pm

+1 :!:
Mechatronics-Engineering Student
-Built own ebike: ✔
-Built own 3.2kWh LiIon battery (300Amps): ✔
-Overtake Porsche with own Ebike: ✔
-Take off with ebike: ✖

~14kW, 3.2kWh LiIon, QS 205 8ml ff, hubsink

drew12345   10 kW

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by drew12345 » Jun 28 2016 7:21pm

More pics please

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bzhwindtalker   1 MW

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by bzhwindtalker » Jun 29 2016 4:02am

https://www.instagram.com/p/BHEfG7XgWyR
I wont show how we modded the motor, but we have approx 150 CM² of direct heat transfer area on the iron, and absolutely leak proof design.
Motor modif is pretty involved and takes about 2h all in. We were very happy that we noticed no difference in performance on the motor (kv, torque) after the mod.
We still have to optimise filling and temp expansion in the system to keep the system to go too high in pressure.
Continuous power is definitely much better!

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Overclocker   10 kW

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Re: LMX P2 : Freeride trials motorcycle frame development

Post by Overclocker » Jun 30 2016 2:16am

having copper/brass radiator w/ aluminum in the loop will result in major galvanic corrosion

you might not need an air expansion chamber because of the low temps involved. the hoses have enough elasticity to deal w/ the small amount of expansion

look into organic-acid type anticorrosive/coolants i.e. "dexcool" types. these things last up to 10years in my car

certain hose materials are semi-permeable so you get water loss over time

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