Upgrade time! 40mph max speed target. Help

General Discussion about electric bicycles.

Re: Upgrade time! 40mph max speed target. Help

Postby amberwolf » Wed Jan 25, 2012 2:23 pm

electr0n wrote:I know there's just about no way to 100% water proof these motors but I imagine there is a difference between the tiny amount of water that gets into my sealed motor vs having larger ventilation holes.

it's not necessarily a tiny amount. ;) go watch justin's last video about hubmotors. :lol:
Got a question that isn't personal or private? Post it in the forums, don't PM it. ;)

Wiki your techy info so it doesn't get old, lost and icky:
http://endless-sphere.com/w


Full-Suspension Semi Recumbent Cargo Bike - NuVinci MidDrive
Semi-Recumbent Recycled-Parts Cargo eBike: "CrazyBike2"
DayGlo Avenger, MkII


House Fire Updates Thread
User avatar
amberwolf
100 GW
100 GW
 
Posts: 15653
Joined: Mon Aug 17, 2009 6:43 am
Location: Phoenix, AZ, USA, Earth, Sol, Local Bubble, Orion Arm, Milky Way, Local Group

Re: Upgrade time! 40mph max speed target. Help

Postby rojitor » Wed Jan 25, 2012 3:02 pm

I have hs3540 72v 40a 26" it does close to 70 kmh all the time, i have it drilled and it does not heat beyond 60 celsius even after a long rough ride. I don't know if that motorhub can smoke without the holes using it like that.
User avatar
rojitor
10 kW
10 kW
 
Posts: 592
Joined: Wed Mar 23, 2011 6:39 pm
Location: vigo spain

Re: Upgrade time! 40mph max speed target. Help

Postby dogman » Wed Jan 25, 2012 3:22 pm

Well for starters, if you are riding through cold water or slush, your motor is now pretty nicely water cooled and won't need vents on that day. When I say vent a motor, really I'm talking about vent it for a motor smoking run on a Tuscon racetrack on a 90F day.

As I've said before, and it was said again just above, let er rip for a short time. What's a short time? It is untill your motor thermometer tells you when to stop.

Slap a bargian price 9c or muxus dd motor on the rear, and let er rip. Just keep the 40 mph part down to 10-15 min, and you are good to go. Ventilate the motor only if your thermometer is telling you to do it. If you need summer vents, tape em over for winter with metal high temp duct tape.
THE LIPO RULES. NEVER ABOVE 4.3V NEVER BELOW 2.7V DON'T PUNCTURE

Ideal charging /discharging range for Lipo, 3.65v minimum 4.1v maximum

See battery technology section, FAQ thread at the top of the page for lipo noob info.

See the frankenbike longtail at the thread below.
viewtopic.php?f=6&t=28389&hilit=bouncing+betty
User avatar
dogman
100 GW
100 GW
 
Posts: 27880
Joined: Sat May 17, 2008 12:53 pm
Location: Las Cruces New Mexico USA

Re: Upgrade time! 40mph max speed target. Help

Postby electr0n » Wed Jan 25, 2012 4:04 pm

Philistine wrote:My commute is 12-14km, and I can make that WOT with no problem, but I probably wouldn't want to turn straight around and go home WOT. But sometimes that has happened (ie, gotten to work then wanted to turn around and come straight back - actually every time I get to work I want to turn around and go straight back :D ), and I have just waited 10 or 15 minutes then WOT home.


:lol: That's funny and I can completely relate to that! That was really helpful too. It's nice to get some real world performance info rather than just going by simulation. So you're around 200lbs running at 50 amps 74 volts and start to get too hot after about 15 minutes of full throttle. Realistically right now I've only got 8 amp hours of batteries at 66v. I'd like to double my amp hours on my next battery purchase and might go up to 88.8v as well so I'll probably be close to the same wattage as you, maybe a little less cuz I weigh a bit less than you.

So let's say I end up with 88.8v 16ah of batteries. That'll give me 1420 watt hours. At full throttle HS3540 88.8v at 40 amps should put me around 48 watt hours a kilometer. Let's say I could squeeze about 25km at full throttle from that size battery pack at 65kph. I should run out of watt hours within about 23 minutes probably around the same time heat buildup is becoming an issue.

So just like dogman was pointing out battery capacity vs overheat time is another issue.... hoping others will chime in with their experiences on their motors with overheating.

Thanks for that rojitor. I'm beginning to lean towards the HS3540. Makes good sense dogman. Maybe the 9C could handle what I'm asking for it too and it's really just a toss up between the two motors. Maybe a slightly higher overheating tolerance with the HS vs the 9C. Actually overheating shouldn't be much of an issue for me for most of the year here in Southern Ontario. Today it's -1C.
electr0n
1 kW
1 kW
 
Posts: 423
Joined: Sun Mar 29, 2009 11:09 am

Re: Upgrade time! 40mph max speed target. Help

Postby nomad85 » Wed Jan 25, 2012 4:38 pm

amberwolf wrote:
electr0n wrote:I know there's just about no way to 100% water proof these motors but I imagine there is a difference between the tiny amount of water that gets into my sealed motor vs having larger ventilation holes.

it's not necessarily a tiny amount. ;) go watch justin's last video about hubmotors. :lol:

link?
E-bike#2- Trek Xtracycle 45 mph top speed(@74v)
Trek 850/9C 9x7 rear motor / 74v 10Ah Lipo
Mileage since 10/20/08: 9500 miles as of 8/10
User avatar
nomad85
10 kW
10 kW
 
Posts: 606
Joined: Mon May 19, 2008 3:17 am
Location: Indiana

Re: Upgrade time! 40mph max speed target. Help

Postby electr0n » Wed Jan 25, 2012 5:01 pm

nomad85 wrote:
amberwolf wrote:
electr0n wrote:I know there's just about no way to 100% water proof these motors but I imagine there is a difference between the tiny amount of water that gets into my sealed motor vs having larger ventilation holes.

it's not necessarily a tiny amount. ;) go watch justin's last video about hubmotors. :lol:

link?


I'd like to check that out too. Maybe I've been lucky but water hasn't caused much of an issue aside from my hub motor freezing in the mornings a couple times. Now I take my motor off and bring it inside once or twice a month and put anti rust and lubricant inside.
electr0n
1 kW
1 kW
 
Posts: 423
Joined: Sun Mar 29, 2009 11:09 am

Re: Upgrade time! 40mph max speed target. Help

Postby rui_fujino » Wed Jan 25, 2012 5:28 pm

I've had similar experience where I had to chose between 9C and HS and in the end I got HS3540 from MethTek.
If you really are worried about over heating and all that, you could get your self 52T chainring and 11T-32T freewheel with these combo you can pedal at 35mph therefore you can pedal 30% and use motor 70% to save battery and over heating problem!
I would recommend getting HS from MethTek or someone who has already done upgrade to the motor so you wont need to worry about phase/hall wires getting cut by the axle.
what sort of bike you riding??
Project 1: Apollo slant hard tail MTB 52v lifepo4, conhismotor, 52T-11T gearing 39.6mph top speed (with pedal)
Project 2: Diamondback s:10 Full suspension 20s2p (83.5v 10ah Lipo), 35kg, HS3540 sensored (MethTek), 12FET lyen controller, Bulk 600w balance charger.
Top speed 45mph(72.4km/h)
Project 3: DOPPELGANGER d2 Visceral
Project 5 Specialized Epic20s2p (83.5v 10ah Lipo), 30kg,HS3540 sensored (MethTek), 12FET lyen @ 50A
Top speed 45mph(72.4km/h)
User avatar
rui_fujino
1 kW
1 kW
 
Posts: 422
Joined: Sat Aug 14, 2010 2:10 am
Location: UK/Japan

Re: Upgrade time! 40mph max speed target. Help

Postby amberwolf » Wed Jan 25, 2012 7:47 pm

nomad85 wrote:
amberwolf wrote:it's not necessarily a tiny amount. ;) go watch justin's last video about hubmotors. :lol:

link?

a quick google search on my exact phrase "justin's last video about hubmotors"
http://www.google.com/search?q=justin%2 ... +hubmotors
finds it as the very first item. ;)

(though google put a space between "hub" and "motors" when it displayed the search, so if it doesn't find it as first item for you, put the space there)
Got a question that isn't personal or private? Post it in the forums, don't PM it. ;)

Wiki your techy info so it doesn't get old, lost and icky:
http://endless-sphere.com/w


Full-Suspension Semi Recumbent Cargo Bike - NuVinci MidDrive
Semi-Recumbent Recycled-Parts Cargo eBike: "CrazyBike2"
DayGlo Avenger, MkII


House Fire Updates Thread
User avatar
amberwolf
100 GW
100 GW
 
Posts: 15653
Joined: Mon Aug 17, 2009 6:43 am
Location: Phoenix, AZ, USA, Earth, Sol, Local Bubble, Orion Arm, Milky Way, Local Group

Re: Upgrade time! 40mph max speed target. Help

Postby nomad85 » Wed Jan 25, 2012 10:10 pm

amberwolf wrote:
nomad85 wrote:
amberwolf wrote:it's not necessarily a tiny amount. ;) go watch justin's last video about hubmotors. :lol:

link?

a quick google search on my exact phrase "justin's last video about hubmotors"
http://www.google.com/search?q=justin%2 ... +hubmotors
finds it as the very first item. ;)

(though google put a space between "hub" and "motors" when it displayed the search, so if it doesn't find it as first item for you, put the space there)

http://www.lmgtfy.com/?q=%22justin%27s+ ... bmotors%22 :mrgreen:
E-bike#2- Trek Xtracycle 45 mph top speed(@74v)
Trek 850/9C 9x7 rear motor / 74v 10Ah Lipo
Mileage since 10/20/08: 9500 miles as of 8/10
User avatar
nomad85
10 kW
10 kW
 
Posts: 606
Joined: Mon May 19, 2008 3:17 am
Location: Indiana

Re: Upgrade time! 40mph max speed target. Help

Postby amberwolf » Thu Jan 26, 2012 12:40 am

ok, now google has cached *this* thread and puts it first. :lol: so it's the second link now.

but the search your link does only shows this thread, and not any of the other results. :(
Got a question that isn't personal or private? Post it in the forums, don't PM it. ;)

Wiki your techy info so it doesn't get old, lost and icky:
http://endless-sphere.com/w


Full-Suspension Semi Recumbent Cargo Bike - NuVinci MidDrive
Semi-Recumbent Recycled-Parts Cargo eBike: "CrazyBike2"
DayGlo Avenger, MkII


House Fire Updates Thread
User avatar
amberwolf
100 GW
100 GW
 
Posts: 15653
Joined: Mon Aug 17, 2009 6:43 am
Location: Phoenix, AZ, USA, Earth, Sol, Local Bubble, Orion Arm, Milky Way, Local Group

Re: Upgrade time! 40mph max speed target. Help

Postby dogman » Thu Jan 26, 2012 7:43 am

Can we agree that 35 mph can take as much as 2000w on a MTB? Who's able to pedal 30% of that for miles and miles? Most of us are hard pressed to put out 150w for ten or more miles. So at 35mph, you aint gonna pedal up 30% of your wattage. closer to 5-10%.

I put a 15 ah battery on a bike two times, once racing, once dirt riding. Both motors smoked. But the conditions were flogging the motor as hard as possible. Cruising on paved is different, But I have many times had a plenty hot motor( smelling the toasting windings, no way you want to touch it) after an 8 mile cruising ride at 45 mph. I say limit speed to whatever you can get for about 1500-2000w continous. That level should go the distance.
THE LIPO RULES. NEVER ABOVE 4.3V NEVER BELOW 2.7V DON'T PUNCTURE

Ideal charging /discharging range for Lipo, 3.65v minimum 4.1v maximum

See battery technology section, FAQ thread at the top of the page for lipo noob info.

See the frankenbike longtail at the thread below.
viewtopic.php?f=6&t=28389&hilit=bouncing+betty
User avatar
dogman
100 GW
100 GW
 
Posts: 27880
Joined: Sat May 17, 2008 12:53 pm
Location: Las Cruces New Mexico USA

Re: Upgrade time! 40mph max speed target. Help

Postby The Mighty Volt » Thu Jan 26, 2012 10:11 pm

I have to be honest, this is all news to me, I have ragged on a 5305 in a 20" wheel, 72v, 65a, and ridden it like a moped/motorcycle, and it barely got touch-warm. Controller barely got touch-warm. And I've taken out some serious hills. I'm about a week out from doing the same with a 5303 on a 24 Mosfet controller, we'll soon see how that stacks up.
The Mighty Volt
100 MW
100 MW
 
Posts: 2614
Joined: Sat Oct 17, 2009 9:35 am
Location: Republic of Ireland.

Re: Upgrade time! 40mph max speed target. Help

Postby dogman » Fri Jan 27, 2012 8:22 am

You'd be very hard pressed to melt down a 5305 in 20" rim. But you can melt "typical 26" kit motors" in 30-40 min if you feed em 3000w continous. Bigger wheel and faster winding, and less motor mass.
THE LIPO RULES. NEVER ABOVE 4.3V NEVER BELOW 2.7V DON'T PUNCTURE

Ideal charging /discharging range for Lipo, 3.65v minimum 4.1v maximum

See battery technology section, FAQ thread at the top of the page for lipo noob info.

See the frankenbike longtail at the thread below.
viewtopic.php?f=6&t=28389&hilit=bouncing+betty
User avatar
dogman
100 GW
100 GW
 
Posts: 27880
Joined: Sat May 17, 2008 12:53 pm
Location: Las Cruces New Mexico USA

Re: Upgrade time! 40mph max speed target. Help

Postby electr0n » Sun Feb 12, 2012 12:21 pm

After much debating I went out and got a 26" HS3540 rear wheel for a good deal locally. I plan on eventually running 24s 88.8v 50 amps on a Lyen 12 fet controller. That should give me a top speed a little over 70kph which is pretty much what I'm looking for. Around 4.4 kw at full throttle and I won't be running that continuous for longer than maybe 15 to 20 minutes before toning it down.

How can I tell if this motor has been modified for the wire cut issue? There is a black outer plastic cover, some black silcone type stuff on the axle where the wire is, then a second black cover on the motor.

HS3540 wire exit2.jpg
(243.34 KiB) Downloaded 2 times
electr0n
1 kW
1 kW
 
Posts: 423
Joined: Sun Mar 29, 2009 11:09 am

Re: Upgrade time! 40mph max speed target. Help

Postby rui_fujino » Sun Feb 12, 2012 12:53 pm

I've got HS3540 and so far it does 44.5mph top speed(flat) with 20s2p lipo. So if you go for 24s you will have no trouble getting 40mph, infact you could get 45mph out of it (unless you bike is really heavy).
Also, 50amp on lyen sounds good to me, I use 50amp too and motor won't get warm at all while doing 5min WOT! But controller do get hot so you wouldn't want to do 20min of WOT....:p
It looks modified to me but then I have not seen unmodified ones so I'm not 100% sure
Project 1: Apollo slant hard tail MTB 52v lifepo4, conhismotor, 52T-11T gearing 39.6mph top speed (with pedal)
Project 2: Diamondback s:10 Full suspension 20s2p (83.5v 10ah Lipo), 35kg, HS3540 sensored (MethTek), 12FET lyen controller, Bulk 600w balance charger.
Top speed 45mph(72.4km/h)
Project 3: DOPPELGANGER d2 Visceral
Project 5 Specialized Epic20s2p (83.5v 10ah Lipo), 30kg,HS3540 sensored (MethTek), 12FET lyen @ 50A
Top speed 45mph(72.4km/h)
User avatar
rui_fujino
1 kW
1 kW
 
Posts: 422
Joined: Sat Aug 14, 2010 2:10 am
Location: UK/Japan

Re: Upgrade time! 40mph max speed target. Help

Postby electr0n » Sun Feb 12, 2012 2:35 pm

rui_fujino wrote:I've got HS3540 and so far it does 44.5mph top speed(flat) with 20s2p lipo. So if you go for 24s you will have no trouble getting 40mph, infact you could get 45mph out of it (unless you bike is really heavy).
Also, 50amp on lyen sounds good to me, I use 50amp too and motor won't get warm at all while doing 5min WOT! But controller do get hot so you wouldn't want to do 20min of WOT....:p
It looks modified to me but then I have not seen unmodified ones so I'm not 100% sure


Is that a 12 fet controller you're using that gets hot? Would an 18 Fet controller be more appropriate for full throttle for 15 to 20 minutes? Your top speed sounds pretty good to me. I don't know how often I'll actually be riding at max speed but it will certainly be nice to have it and be able to sustain it for 15 to 20 minutes.
electr0n
1 kW
1 kW
 
Posts: 423
Joined: Sun Mar 29, 2009 11:09 am

Re: Upgrade time! 40mph max speed target. Help

Postby rui_fujino » Sun Feb 12, 2012 2:42 pm

electr0n wrote:
rui_fujino wrote:I've got HS3540 and so far it does 44.5mph top speed(flat) with 20s2p lipo. So if you go for 24s you will have no trouble getting 40mph, infact you could get 45mph out of it (unless you bike is really heavy).
Also, 50amp on lyen sounds good to me, I use 50amp too and motor won't get warm at all while doing 5min WOT! But controller do get hot so you wouldn't want to do 20min of WOT....:p
It looks modified to me but then I have not seen unmodified ones so I'm not 100% sure


Is that a 12 fet controller you're using that gets hot? Would an 18 Fet controller be more appropriate for full throttle for 15 to 20 minutes? Your top speed sounds pretty good to me. I don't know how often I'll actually be riding at max speed but it will certainly be nice to have it and be able to sustain it for 15 to 20 minutes.


yea im using 12fets. 18fets maybe better but if you do use 18fets, your battery will get drained so much faster... as far as i know, I never need to go faster than 40mph for such a long period of time since there are on road around me where I can go so fast without risking danger :P
If you want to go 20min WOT then you might want to get more than 10ah for your distance
PS: you got fullface helmet?
Project 1: Apollo slant hard tail MTB 52v lifepo4, conhismotor, 52T-11T gearing 39.6mph top speed (with pedal)
Project 2: Diamondback s:10 Full suspension 20s2p (83.5v 10ah Lipo), 35kg, HS3540 sensored (MethTek), 12FET lyen controller, Bulk 600w balance charger.
Top speed 45mph(72.4km/h)
Project 3: DOPPELGANGER d2 Visceral
Project 5 Specialized Epic20s2p (83.5v 10ah Lipo), 30kg,HS3540 sensored (MethTek), 12FET lyen @ 50A
Top speed 45mph(72.4km/h)
User avatar
rui_fujino
1 kW
1 kW
 
Posts: 422
Joined: Sat Aug 14, 2010 2:10 am
Location: UK/Japan

Re: Upgrade time! 40mph max speed target. Help

Postby stewrobb » Wed Feb 22, 2012 10:56 am

yea im using 12fets. 18fets maybe better but if you do use 18fets, your battery will get drained so much faster... as far as i know, I never need to go faster than 40mph for such a long period of time since there are on road around me where I can go so fast without risking danger
If you want to go 20min WOT then you might want to get more than 10ah for your distance
PS: you got fullface helmet?



18 MOSFET's drains your battery faster than 12 huh... This is news to me lol. Actually, there is just less resistance because of the increased amount of FET's, setting an 18 FET to the same current as a 12 FET results in a cooler controller, with less sag. To get the same effect, you can just upgrade the FET's to 4110 or alike, less resistance.
Gio 500+ scooter - @72v 50A X8M06 Greentime Controller
Delta/Wye - Regen - 20s3p 20c Turnigy hardcase
- Drove until the end, bent frame retired it

Current Build:
Ironhorse Hardtail frame, 120mm Suspension
Front Hayes Hydro Disc, Rear cable Disc
18 FET 4110 60A (for now) Controller
1000w Rear Motor - 420rpm@48v
20s3p Turnigy 5Ah
stewrobb
10 W
10 W
 
Posts: 69
Joined: Tue Aug 30, 2011 4:38 pm
Location: Toronto, Canada

Re: Upgrade time! 40mph max speed target. Help

Postby dogman » Wed Feb 22, 2012 12:58 pm

Well, 12 fets set to 40 amps will draw slower than 18 fets set to 60 amps. Maybe that's the difference?
THE LIPO RULES. NEVER ABOVE 4.3V NEVER BELOW 2.7V DON'T PUNCTURE

Ideal charging /discharging range for Lipo, 3.65v minimum 4.1v maximum

See battery technology section, FAQ thread at the top of the page for lipo noob info.

See the frankenbike longtail at the thread below.
viewtopic.php?f=6&t=28389&hilit=bouncing+betty
User avatar
dogman
100 GW
100 GW
 
Posts: 27880
Joined: Sat May 17, 2008 12:53 pm
Location: Las Cruces New Mexico USA

Re: Upgrade time! 40mph max speed target. Help

Postby nicobie » Wed Feb 22, 2012 2:02 pm

It seems like everybody likes the HS3540, but I think the HT3525 is better for most folks who run 26" wheels. Not only does the HT have 5% more copper than the HS, it gets out of the dangerous heating mode quicker. It's the heat that kills these motors, so the sooner it gets to its efficient speed the easier on the motor it is.

As to hitting 40 mph,, My HT3525 with a Lyen 12 fet controller set at 60 battery amps, 100.3V hot off charger in a 24" wheel w/2.5 hookworms will go 43.5 mph and so far the temp gauge hasn't gone over 80C. It mostly stays under 60C. I do have my sidecovers drilled (6 x 1½" holes).

I'd play it safe and go with the HT3525 unless you are planning to run a 20" rim.
Image

May your tote always stay tight and your edge eversharp :wink:

my eTownie build thread: viewtopic.php?f=6&t=23701
User avatar
nicobie
10 MW
10 MW
 
Posts: 2104
Joined: Thu Aug 07, 2008 1:48 pm
Location: Central Coast CA,USA

Re: Upgrade time! 40mph max speed target. Help

Postby cwah » Wed Feb 22, 2012 2:51 pm

What about using small sized wheel? Acceleration is much better allowing you to reach the maximum speed (and optimal efficiency) much quicker.

On the simulator, HS3540 on 16" wheel at 100V and 40amps give you 40 mph and it never overheat.
Help me find my stolen electric brompton: http://bit.ly/1a0vbBC and Bosch Sinus B3 http://bit.ly/1eV0WQz
cwah
100 MW
100 MW
 
Posts: 2803
Joined: Sun Jul 24, 2011 5:42 am
Location: Between paris and london

Re: Upgrade time! 40mph max speed target. Help

Postby rui_fujino » Wed Feb 22, 2012 3:39 pm

I think best starting point is by thinking of Max price you want ti spend on it.
If you run 26" then 20s (83v hot lipo) to reach 40+mph
If you run 20-24" then 24s (99.6v hot lipo) to reach 40+mph
Another word more battery more cost.

After chosen the wheel size then you should already got idea of which motor to get.

Personally 26 is better for being able to pedal at higher speed (up to 35mph with 11t freewheel )
Project 1: Apollo slant hard tail MTB 52v lifepo4, conhismotor, 52T-11T gearing 39.6mph top speed (with pedal)
Project 2: Diamondback s:10 Full suspension 20s2p (83.5v 10ah Lipo), 35kg, HS3540 sensored (MethTek), 12FET lyen controller, Bulk 600w balance charger.
Top speed 45mph(72.4km/h)
Project 3: DOPPELGANGER d2 Visceral
Project 5 Specialized Epic20s2p (83.5v 10ah Lipo), 30kg,HS3540 sensored (MethTek), 12FET lyen @ 50A
Top speed 45mph(72.4km/h)
User avatar
rui_fujino
1 kW
1 kW
 
Posts: 422
Joined: Sat Aug 14, 2010 2:10 am
Location: UK/Japan

Re: Upgrade time! 40mph max speed target. Help

Postby electr0n » Thu Feb 23, 2012 7:46 am

I've already picked up an HS3540 in a 26" wheel. I was put off by the HT3525 due to the slower speed at my current battery voltage of 66.6v. Also the torque seems to drop off pretty quick towards the top end of the speed on the simulator. I do appreciate that the HT takes more time to overheat and has slightly more copper. Nicobie the speed you report off your HT seems a little faster than the simulator predicts, it sounds pretty good actually and that would work for me. You must have really nice acceleration with that setup. I'll have to wait and see for myself how much of an issue heat becomes and let that determine my next eventual motor purchase.

I haven't any experience with the slower wound motors. I tend to look more at the faster speed windings so I can hit a target speed using less voltage but then overheating does become an issue this way and slower speeds tend to be less efficient. I was thinking I'll probably be able to control the heat with my riding style and if that's not enough I'll eventually either drill holes, install fans or move to a smaller diameter wheel. It does seem that a lot of folks here prefer the slower wound motors and just throwing voltage at them to get the speed up. Part of my decision was based on price which is the primary reason I picked up a local second hand HS laced into a 26" wheel, seller claimed it had never been used and it looked mint to me and I saved almost $100. Still have yet to test it out though. Fingers crossed there are no cut hall wires. I took a chance to save some money. Hopefully I won't get burned.

Last night I modified my old 36v to 72v crystaltye 20 amp controller. I added some solder to the shunt and took the bike out for a test ride. I don't have a cycle analyst or anything to measure the power I'm pulling now but I felt a real nice boost in torque and acceleration last night and I had the classic ebike grin going. :mrgreen: My old motor has new life.

I'm actually excited to go into work this morning to take out my old 407 front crystalyte, I'm still using to commute, with the new shunt mod I installed last night.
electr0n
1 kW
1 kW
 
Posts: 423
Joined: Sun Mar 29, 2009 11:09 am

Re: Upgrade time! 40mph max speed target. Help

Postby electr0n » Mon Feb 27, 2012 7:17 pm

After several rides with my modified Crystalyte 36-72v 20amp controller it was running nice on my 407. I decided to throw it on my HS3540 and was thrilled all the phase and hall wires matched up without having to swap wires around. I took the bike out for a test ride and the torque and power was really nice, a significant improvement over the 407 at the same wattage. I also noticed a big difference in the rear wheel drive vs the front wheel. The front end of the bike felt very light, which is good when going up curbs and bumps but it didn't feel as stable at high speed due to the light front end. I also blew up my 20 amp controller. So the HS3540 must be more demanding on the controller than the 407. Now waiting on replacement controllers to arrive. In the mean time I'm taking the bus to work and it takes me an hour to get to work, when the same trip took under 30 minutes via ebike!

Here's the bike. It's cheap. No indoor storage at the moment so no sense in getting a more expensive bike at this point.

SupercycleHS3540.jpg
My bike


Here's a picture of the wire cut protector I made from an aluminum tea can. Hope it does the job. Idea emulated from sn0wchild I believe.

Wirecutprotector.jpg
Wire cut protection


Here's my burnt out controller. It was pretty hot after a short 5 minute ride on the HS3540.

BurntController.jpg
Burnt Controller
electr0n
1 kW
1 kW
 
Posts: 423
Joined: Sun Mar 29, 2009 11:09 am

Re: Upgrade time! 40mph max speed target. Help

Postby rui_fujino » Mon Feb 27, 2012 7:35 pm

what controller are you planning to replace buy? I recommend Lyen 12 fet since he works very hard and do the right job perfectly!
also he's controller will be programmable as well as 3 way switch compatible. :wink:
Project 1: Apollo slant hard tail MTB 52v lifepo4, conhismotor, 52T-11T gearing 39.6mph top speed (with pedal)
Project 2: Diamondback s:10 Full suspension 20s2p (83.5v 10ah Lipo), 35kg, HS3540 sensored (MethTek), 12FET lyen controller, Bulk 600w balance charger.
Top speed 45mph(72.4km/h)
Project 3: DOPPELGANGER d2 Visceral
Project 5 Specialized Epic20s2p (83.5v 10ah Lipo), 30kg,HS3540 sensored (MethTek), 12FET lyen @ 50A
Top speed 45mph(72.4km/h)
User avatar
rui_fujino
1 kW
1 kW
 
Posts: 422
Joined: Sat Aug 14, 2010 2:10 am
Location: UK/Japan

Next

Return to E-Bike General Discussion

Who is online

Users browsing this forum: Google [Bot], Jazzman56 and 8 guests