3540 or 3525 crystalyte motor for a 29er?

D

dominator

10 W
Joined
Nov 27, 2013
Messages
75
Location
Westminster, CA
Would the 3540 be able to handle 29" wheels without overheating too fast or would the 3525 be better, I used the simulator and it said it would take about 11 minutes to overheat at 90v 50a controller. The motors will be modified with upgraded wires etc.

Not much out there on people using 29" wheels with electric motors
 
Depends on the terrain it's being used on, if it's pretty much dead flat then the 3540 should be ok but personally if you're going to run high voltage I would go for the 3525.

More torque for the bigger wheel, more efficient, better on hills, only downside being absolute top speed.

Kudos
 
50 amps ? At 40amps and hills@ 82volts the 3525 melted the strings inside. It`s the amps that melts motors so start at 30 and work up from there. This will help so you don`t melt things. Yes 3525@ 29. And a good torgure arm.
 
I have 26" with 2.3 tyres thats about 27.5" wheels. Works great when I added air scoopes to cool my rear motor even more.
I use HS3540. I do very few stops and go so if you do or you go offroad it will heat up after 20-40minutes with 40A controller. 50A controller works great and 90v is better than 60v compared. Higher volt, lower amps and heat... Also constans speed of 45-50km/h or 33mph gives infitity without heating problems. I use sensorless. If you only need a lower max speed then 90v and HT3525 might be the good deal. Theres really only 10% in difference. More amps more acceleration and fun.

Good luck
 
Nice yea my main cruising speed will be 30mph i just want the option of a quick 40mph burst to show off here and there, I was told 29" would work but that I would just lose torque and efficiency
 
The more I read while Im waiting for my new bike to be shipped and assembled, the more I'm considering the HS3540 now since ebikes.ca says that there is no torque advantage to the HT3525 its just a slower motor and looking at this video http://www.youtube.com/watch?v=cgssLyUYlcQ shows that the HT and HS both have the same acceleration but the HS has a higher top speed.
 
It does run cooler and will take less amps at max speed , yes slower max speed. For longer range and cooler running ( 3525 ) Let us know which one you got and how it works in the 29er.
 
I will have it Thursday, cancelled my bike order since trex ex6 full suspension bike axle uses a special abp system which isn't compatible ended up buying the xcaliber 8 in store, will report asap
 
Got the bike will test it tomorrow since it's pretty late here, they didn't have the 90v batteries in stock so I went with the 3500w system running 2 37v batteries so 74v, they recommended running the system at 44amps, I did a short test run at the shop and acceleration was more then satisfactory. Can't wait to play with this thing, will post pics and stats.
 
Couldn't wait so did a quick test run with a stretch of about 200 feet i was able to reach 36mph I'm thinking top speed would be 38mph with a little more space, acceleration is very nice and i like it a lot, would be nice to hit 43ish mph but wont complain since the torque is so nice. So the motor is running at 74v 45amps on 29" wheels, ht3525 motor modified hpc striker version.

*edit* I take that back fresh off the charger at 84v it flies to 38mph easily within a hundred yards if that should easily hit 40mph on a longer stretch
 
dominator said:
would be nice to hit 43ish mph but wont complain since the torque is so nice. So the motor is running at 74v 45amps on 29" wheels, ht3525 motor modified hpc striker version.
Click to expand...

Up your battery to 24s (100v HOC) and it will go faster than 43mph. My setup in a 24" rim w/2.5" hookworms will hit 43 mph and I can't get it over 80C.
 
Would I need a new controller though? The one i have now has writing on it that says 72 volt in marker its a crystalyte controller, I'll ask hpc to be sure cause i was thinking might be better to run 90v 35a instead of 74v 40a

This is what mine looks like if so it may take 90v

http://ebikessf.com/12MOSFETSensorlessController
 
I plan on running 72v with an infineon 40A controller 12 mosfet, butttt a 26" wheel with a beefy tire. so the 3525 would be a safer motor from what i gather? i have a flat 14 mile commute and would like to cruise 35mph to and from work. 14 miles each way. Any insight?
 
danjpendleton said:
I plan on running 72v with an infineon 40A controller 12 mosfet, butttt a 26" wheel with a beefy tire. so the 3525 would be a safer motor from what i gather? i have a flat 14 mile commute and would like to cruise 35mph to and from work. 14 miles each way. Any insight?
Click to expand...

With flat riding I'd go with the 3580/4080. I have both of these motors and they're ideal for commuting. The motors only and pulling minimal amp at 30mph. I have a 5305 which is similar to the 3525 but I hardly use it.
 
Rodney. thanks for the input. looks like the the ht3525 has a lower rpm/volt at 7.25. the hs3540 is higher at 10.225.

im assuming the 3580 is just a faster wind?? any idea how it compares to the hs3540?
any idea where the h4080 sits?
Cant find a whole lot of info on them. Who sells them?

Ebikes.ca sells the hs3540 with an infineon 40A 12 mosfet controller, which made me want to lean towards that one. Ive been trying to get some practice with the simulator to see the differences

id rather cruise around 35 mph 90% throttle with 72v, and be able to hit 40mph max at full throttle. rather than 35+ at 90% throttle and 40+ max at full throttle.
 
...justin himself did a test 3540/3525 and his conclussion was that the 3525 is only slower...thats it.
not woth to buy this slower speed motor for 0,x % better torque or less heat

in summer with 1000w continue over long distance he will reach over 120°c temps (3540)
but theres no problem to push about 8kw out of him. (with original phasewires!)

i know why? because i had him in a 29er for some time. (changed to 4080)

it is a good motor. just add a temp probe through windings and you will never smoke him.
 
Merlin. Just wondering why you switched to a 4080? Its a wider stator correct? and a higher wind motor? whats the advantage over 3540?
 
the first reason was: i had this 3540 in a 28" wheel.
i wanted to switch to bigger tyres on 26" Wheels.(more comfort, and yes this .235 tyres is alot more suspension :p)
But I cant replace the spokes from 28" to 26" so before i pay replacing spokes i bought a new motor.
the 4080 was new on market and yes he has 5mm wider stator. yes he can handle a bit more amps before heating up.
but it is not worth to buy it in this way.
the 4080 has higher winds...he's faster. 7-8kph. on 75v the 3540 runs clear 81-83 kph.
the 3540 runs in same bike 73-75kph.
(fresh lipo batterys)

5mm more Stator you need in your dropouts also 5mm more :p
after 2000km i can say no problem to stretch my 135mm to 145mm and use the 4080 with a 9x freewheel.


( i know my english sucks but it is late and iam drunk) :mrgreen: :p
 
Took the bike on my first long ride to work averaging 28 mph and the next day the throttle is all messed up now. Basically if you apply any bit of throttle the bike seems to automatically apply 50% throttle and stick there unless you apply full throttle then after applying full throttle and releasing the motor will spin down. I have contacted HPC about it and waiting to see what they say, I think it is either the throttle or motor maybe. I t did this once when I first got the bike too but didn't think anything of it.
 
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