Mag Max: compact 2-stage drive /w mag clutch brake regen

Discussions related to motors other than hub motors.
This includes R/C motors, botttom bracket, roller and geared drives.

Re: Mag Max: compact 2-stage drive /w mag clutch brake regen

Postby j3tch1u » Tue Mar 13, 2012 2:13 pm

Arlo1 wrote:LOL sorry I had to read the last page of this thread 3 times to find Taiwan..... Hmmm at least things are cheep there.


actually...new cars are about 2 1/2 times the price of north america and the avg home is $800 USD/sq ft (20 yr old apartment with no land).

we also pay more for bicycles and components (even if they are made here). my local bike shop asks me to shop online for them because prices + shipping are lower than their wholesale cost.

some things are cheaper (like machines, gas, food, electricity, water, tax) but the cost of living is definitely not as low as it was in the 60's.

;)
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Re: Mag Max: compact 2-stage drive /w mag clutch brake regen

Postby j3tch1u » Tue Mar 13, 2012 2:18 pm

toango i am glad that my bike inspired you (as other peoples bikes have inspired me).

that high pitched whine is the harmonic impulse that our collective energies are sending out! either that or my tension is a tad high :lol:


Toango wrote:Well i at first thought the forward seat position looked weird but the more i looked at it the more i like it. It adds to the exotism of the bike as surely this is a special build.

I just read this whole thread tonight for the first time and this build is so inspiring and i daresay that my fav bike on es would not be topped which is miles emoulton. i think you take top honors in my book on the thought and execution. Congratulations! I feel a little embarrassed to say this but you are my hero just from building a fantastic bike :D thanks for being an inspiration and sharing your 3 year project.

One thing though after seeing the video is the bike sounds really loud with a high pitched whine. Surely there can be a design that would lessen that noise.

Subject: Mag Max: compact 2-stage drive /w mag clutch brake regen

j3tch1u wrote::lol: duly noted.

recumpence wrote:Hey Ben,

Can you do everyone a favor and leave the seat folded upward? It looks really odd folded down and does not give an accurate impression of what the bike really should look like. :wink:

It is like leaving the cover on a Ferrari at a show.

Matt
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Astro 3220 shorted phase wires

Postby j3tch1u » Mon Mar 19, 2012 7:50 am

notice to astro motor owners. i discovered my 3220 was shorted to the chassis making for a "lively" ride. culprit was: end termination shrink tape worn out by heat and/or wear. it would be a good idea to double-up on the shrink tape here. happened only after a few rides.

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Re: Mag Max: compact 2-stage drive /w mag clutch brake regen

Postby mdd0127 » Mon Mar 19, 2012 9:30 pm

My 3220 did exactly the same thing.....in fact it came shorted from the factory, probably costing me a few hundred bucks worth of controllers and many many hours of frustrating troubleshooting. :evil:

Screw Astro. Their service sucks and apparently QC is going downhill too. Someone honest and on top of their game needs to buy out the idiots that bought it from Bob.

I've put my whole project on hold until there is a decent motor manufacturer, good controllers, batteries available from someone with good business ethics, and for people to actually be in the financial position to buy a well built, high quality e-bike. Don't know if it will ever happen though. The frame design and everything else is all there......just waiting for the electric drive supply chain to catch up.


Your creation is amazing BTW!
Turn it OFF!!!

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Re: Mag Max: compact 2-stage drive /w mag clutch brake regen

Postby texaspyro » Mon May 07, 2012 2:11 pm

liveforphysics wrote:It would be fun to bring deathbike there. :-)


And a CrazyBike or two...
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Re: Mag Max: compact 2-stage drive /w mag clutch brake regen

Postby ElliottE » Mon May 21, 2012 10:55 pm

Regarding motor suppliers - I'm beginning to wonder if maybe the way to go is to load up on the cheap RC motors brands, pull them apart, sort them into bins and then assemble custom motors from the parts? I'm seeing some outrunner designs in the 1000 watt range for around $120 to $150 that look promising, but I seriously doubt you could just grab them out of a box and count on serious reliable performance out of them. But, if you were to take the time to disassemble them, carefully inspect and/or repair the components, then re-assemble with real attention to tolerances and quality maybe you'd have something?

As of now, who makes the best R/C style motors in the 1000 watt range for e-bikes? I'd love to hear some opinions on that from everyone. :D
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Re: Mag Max: compact 2-stage drive /w mag clutch brake regen

Postby ilia-45 » Tue May 22, 2012 4:45 pm

Phenomenal job well done :shock:
I apologize for my english
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Re: Astro 3220 shorted phase wires

Postby h0tr0d » Tue Jul 31, 2012 10:09 am

Awesome Buid!!!! 8)

I'm reaaaaaaaly interested in the regen braking of your bike, is it working? with clutch and all?
Controller settings, give us anything! :lol:

Thanks!

j3tch1u wrote:notice to astro motor owners. i discovered my 3220 was shorted to the chassis making for a "lively" ride. culprit was: end termination shrink tape worn out by heat and/or wear. it would be a good idea to double-up on the shrink tape here. happened only after a few rides.
Thank you Justin! Life is so much sweeter with this forum... ;)

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Re: Mag Max: compact 2-stage drive /w mag clutch brake regen

Postby Kin » Sat Aug 25, 2012 8:33 am

It's been great to read through this thread. Beautiful build.



Youtube says you closed your account, so I cant see the videos a few pages back. Was that intentional, or just a mistake?
New to endless-sphere? Notice a lot of signatures recommending Ebike.ca? That's because it's the best place for a quality and manageable, (but still 'real'), first build. Justin is a solid supporter of electric bike development, and a good source of equipment.

My hat off a thousand times to the green people that effectively run this forum. The ES Mods are superb.
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Re: Mag Max: compact 2-stage drive /w mag clutch brake regen

Postby Kin » Sat Aug 25, 2012 8:33 am

It's been great to read through this thread. Beautiful build.



Youtube says you closed your account, so I cant see the videos a few pages back. Was that intentional, or just a mistake?
New to endless-sphere? Notice a lot of signatures recommending Ebike.ca? That's because it's the best place for a quality and manageable, (but still 'real'), first build. Justin is a solid supporter of electric bike development, and a good source of equipment.

My hat off a thousand times to the green people that effectively run this forum. The ES Mods are superb.
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Re: Mag Max: compact 2-stage drive /w mag clutch brake regen

Postby Stevil_Knevil » Fri Nov 16, 2012 3:21 am

Nominated for ..the most awesome ebike.. EVER.

8^o.....

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Re: Mag Max: compact 2-stage drive /w mag clutch brake regen

Postby j3tch1u » Thu Feb 07, 2013 1:24 pm

hey guys, sorry i was on a bit of hiatus. back now and started converting a montague paratrooper for touring the country. it will be a full-size folding electric that i can bring on the high speed rail and explore the land ie. FREEDOM! it will be everything dogati is not--low key, transportable and reliable :)
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Dogati at Maker Faire Taipei 2013

Postby j3tch1u » Sun May 19, 2013 3:25 am

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Re: Mag Max: compact 2-stage drive /w mag clutch brake regen

Postby Tommy L » Sun May 19, 2013 5:50 am

Awesome work here! I'm glad that you "Bump" this thread!

Could you tell me the purpose of detachable Drop Outs?
And when you changed your front fork to Triple Crown (tree) what did you use?

Thank you!


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Re: Mag Max: compact 2-stage drive /w mag clutch brake regen

Postby MattyCiii » Sun May 19, 2013 9:03 am

j3tch1u wrote:hey guys, sorry i was on a bit of hiatus. back now and started converting a montague paratrooper for touring the country. it will be a full-size folding electric that i can bring on the high speed rail and explore the land ie. FREEDOM! it will be everything dogati is not--low key, transportable and reliable :)

Nothing beats a folding bike for versatility. I've taken mine on AMTRAK intercity rail, folded just the handlebars & put it in the belly of an intercity bus, and have had it on subways, on front-mounted city bus racks, and in the boot of several cars. I can pedal mine easily 10+ miles (probably a lot more) at near "normal bicycle" speed, even with the drag of the extra chain/freewheel, the extra weight of the batteries and motor, and with several Kg and cm^3 of tools & cargo.

I can't wait to see what you do with a folding bike!!
1st build: Dahon Jetstream folding bike. Quick, reliable, capable of 30mph. Light enough to lift, folds for easy transport by car/bus/train.
2nd build: RC powered 2009 Norco A-Line. Top speed 31mph. 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.
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Re: Mag Max: compact 2-stage drive /w mag clutch brake regen

Postby j3tch1u » Mon May 20, 2013 11:44 am

hi tommy, the front fork is a white brothers dh3. no specific reason for the detachable drop outs other than design.

Tommy L wrote:Awesome work here! I'm glad that you "Bump" this thread!

Could you tell me the purpose of detachable Drop Outs?
And when you changed your front fork to Triple Crown (tree) what did you use?

Thank you!


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Re: Mag Max: compact 2-stage drive /w mag clutch brake regen

Postby j3tch1u » Mon May 20, 2013 11:52 am

right on matty, that's exactly what i had in mind--leverage the infrastructure and go beyond what planes, trains and autos can do :)

it also comes with a unique set of challenges: has to have enough range/power for the terrain yet be light enough to throw around and needs to be very reliable.

MattyCiii wrote:Nothing beats a folding bike for versatility. I've taken mine on AMTRAK intercity rail, folded just the handlebars & put it in the belly of an intercity bus, and have had it on subways, on front-mounted city bus racks, and in the boot of several cars. I can pedal mine easily 10+ miles (probably a lot more) at near "normal bicycle" speed, even with the drag of the extra chain/freewheel, the extra weight of the batteries and motor, and with several Kg and cm^3 of tools & cargo.

I can't wait to see what you do with a folding bike!!
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