I loved my X5305 (RIP), but is there another I'd love more?

ryan

ryan

10 kW
Joined
Dec 3, 2009
Messages
638
Location
California Bay Area
My Crystalyte 5305 bit the dust last weekend and the doc just verified time of death and performed the autopsy.

So now that I'm in the market for a new motor, I thought I'd ask you all before jumping in again with the 5305.

Would you suggest another motor for me?

Here's what I've loved most about my x5305:

* 1200 miles of massive hill climbing. 700-800 of those towing my son in a trailer.
* top speed (40mph)
* mountain climbing at 15-20mph, no problem (8-15% grade)
* torque and acceleration was amazing
* never worried about overheating or maintenance
* 72v 20Ah of fun and begging for more

Is there any other motor I should consider?
 
sorry to hear that :( ...thats a tough motor to replace,ive been watching your other post,im gonna have to go see the autopsy.good luck finding a replacement.
 
x5304 is capable of higher continous torque than the x5305. It should also give a little better top speed. On the downside, it should cause ~20-25% more controller heating.
 
I have 5303 and a 5304 and love mine too! My 409 is a dog compared to them. If you liked what you had, get it again.
 
liveforphysics said:
x5304 is capable of higher continous torque than the x5305. It should also give a little better top speed. On the downside, it should cause ~20-25% more controller heating.
Click to expand...

Interesting. I expected the 5304 to have less torque, not more. I'm running a Crystalyte 7240 controller, what should I expect the consequences of a hotter controller? Power loss? Risky (might cause controller failure)?

What else should I expect to be different with a 5304? If I tow my son up 1000 ft, would I get there faster, slower, or not at all? Would I need to take breaks to cool down? Any other concerns I should have about using a 5304 the same way I've used a 5305?
 
The x5304 has 4-turns with 6 piece of wire (24 pieces total). The x5305 has 5 turns with 4 pieces of wire total (20 pieces total).

This means for any given torque output, there will be less motor heat produced by the x5304.

Strictly from a motor performance standpoint, if you're feeding them both identical power, the 5304 will make more torque at all RPM points than the 5305, and it will also have a higher top speed.
 
Interesting. I see what you mean. In using the ebikes.ca Hub Motor Simulator I can see that the 5304 and 5305 have similar efficiency characteristics up to 35mph. But the 5305 has a sharp drop off after 35mph, while the 5304 stays at peak torque until at least 45mph. The power characteristics are also similar... the 5305 peaks at 25mph, while the 5304 peaks at 35mph. Similar for thrust.

Why would anyone choose a 5305 over a 5304 then? (perhaps this is why ebikes stopped carrying the 5305)

Can you see any aspect where the 5305 is better than the 5304?
 
Curious.. How did you your 5305 die? Seems like it should go more than 1700 miles.
 
ryan said:
Can you see any aspect where the 5305 is better than the 5304?
Click to expand...


If you're a motor controller, the x5305 looks like the best thing since sliced bread. :) Higher inductance and resistance, as well has building BEMF quickly make those FETs have a nice soft life. That is the biggest advantage of the x5305.
 
Ypedal said:
You can up the voltage on the 5305 to make up for the slower top speed, but use the motor that matches your wheel size and battery voltage at the speed you need. Makes no sense to run a faster motor when you don't need the speed. makes for a more reliable system (* less heat )
Click to expand...

I'm running 26" wheels on a DH frame at 72v. I wouldn't say I don't need the speed. :wink: I was just more concerned about losing my ability to tow my son reliably. I wouldn't trade speed for that.

From what I understand the 5305 means a warmer motor, but cooler controller. The 5304 means a warmer controller, but cooler motor. Is that right? If so, should I really favor one over the other? Controllers seem to be a lot less expensive than motors.
 
liveforphysics said:
x5304 is capable of higher continous torque than the x5305. It should also give a little better top speed. On the downside, it should cause ~20-25% more controller heating.
Click to expand...

Could this be compensated for by getting one of the after-market controllers {Lyen, Steveo etc} ???
 
What happened to your x5305? and how much you want for it?
 
Hi Ryan,

You should stick with another X5305 for torque and low heat for towing as mentioned by Ypedal. Although the X5304 is more fun, but it will put more stress on your controller as well as your battery. :)
 
Methods recommend I consider two 9C motors instead of one x5. A quick price lookup says it's actually cheaper to buy two 9C than one 5304 or 5305.

If I went this route, what should I expect the difference in performance between one rear 5305 and two 9C's?

1) WOT no-pedal distance on 1400wh? (more or less)
2) Top Speed (with 12S2P Headways and a Crystalyte 7240 controller)? (faster / slower)
3) Top Towing Speed? (faster / slower)
4) Can I run them both off the same controller? (Crystalyte 7240)
5) Weight? (two 9Cs weigh more or less than one x5)

And, how many turns do you recommend?
 
ryan said:
Methods recommend I consider two 9C motors instead of one x5. A quick price lookup says it's actually cheaper to buy two 9C than one 5304 or 5305.

If I went this route, what should I expect the difference in performance between one rear 5305 and two 9C's?

1) WOT no-pedal distance on 1400wh? (more or less)
2) Top Speed (with 12S2P Headways and a Crystalyte 7240 controller)? (faster / slower)
3) Top Towing Speed? (faster / slower)
4) Can I run them both off the same controller? (Crystalyte 7240)
5) Weight? (two 9Cs weigh more or less than one x5)

And, how many turns do you recommend?
Click to expand...
Methods is crazy although he has a point!
The MAJOR PORBLEM is you will crash! When you give it throttle in the corner your front will spin and you will wash out and crash! I have a way to build a traction control system for this crude but will work... Just don't have the time to put it togethter!
Secondly you need 2 controlers and 2 throttles or modify your throtle to have two hall sensors inside it!
I cant remember where I down loaded my simulator from but this one should help http://ebike.ca/simulator/
 
You must log in or register to reply here.

Similar threads

DearDeathDay
My 1st ebike, Pls Help Verify Kit/Info Before I Buy
2 3 4
Replies
99
Views
9,136
99t4
9
thorlancaster328
1+1=3: Planning and creation of a 2WD fast electric bike
Replies
19
Views
4,795
--Oz--
--Oz--
D
Planning first ebike. Need some advice
Replies
16
Views
3,096
MadRhino
MadRhino
Back
Top