Timma2500
1 kW
Dlogic: It was a shame your HT burned up so quickly after you spent so long tricking it up I too will consider getting a CroMo if the HT bites the dust however hopefully it won't come to that!
Miro13car: Yeah the HT's aren't a perfect motor but really, what is? There are compromises on every single motor available and always will be... Just as there will be manufacturing tolerance differences with every motor or batch of motors from pretty much all manufacturers regardless of their origin or quality level.
As for simulators, i see them in the same light as a vehicle dyno - no two dynos ever read the exact same power and therefore should only be used as a guide and this is how a sim should be treated, as a guide because as you say, they can't simulate every variable we find in real life
Dlogic: What sort of bike is that you pictured? It kind of looks like a KTM but i suspect its a brand i've not seen before. How has your friend got on with the conversion?
Nothing else to update on this build yet, the motor arrived but i'm yet to order spokes, batteries, controller, Saint brakes, freewheel or CA yet.
Infact i'm yet to decide whether to go with 20s or 24s. The extra top speed of 24s is enticing but on the other hand, the extra range of a lesser voltage battery but bigger ah pack (per battery weight) is also tempting... decisions decisions!
Paul
Miro13car: Yeah the HT's aren't a perfect motor but really, what is? There are compromises on every single motor available and always will be... Just as there will be manufacturing tolerance differences with every motor or batch of motors from pretty much all manufacturers regardless of their origin or quality level.
As for simulators, i see them in the same light as a vehicle dyno - no two dynos ever read the exact same power and therefore should only be used as a guide and this is how a sim should be treated, as a guide because as you say, they can't simulate every variable we find in real life
Hehe, i don't intend to!full-throttle said:Regardless of power it's the heat that kills them, so don't spend too long at low throttle
I think i'll set it up for 4kw. This will just be peaks ofcourse and given i pedal alot, am lightweight and won't be doing any or many hill climbing with it, at a pinch i'd say it should be ok. I've found some reversable heat temp labels in the 30-90deg celcious range to stick on and would like to experiment with some drilled covers and cans of freezing spray similar to what we use to ease burns in the welding industry. My idea is to spray the windings through the drilled covers if the motor is starting to get too hot. Its just a crazy idea for now :wink:full-throttle said:I'll 2nd what Kepler wrote
3kW - ok
4kW - you'd better know what you're doing
5kW - pushing your luck
Thanks Kepler, i believe the comparison is relevant but the result not surprising, especially the temperature difference. These HT's are known to be a distant 2nd place to their X5 big brothers when it comes to coping with heat (and power output) but i'm ok with that and just need to stay mindful of it when out on the trailKepler said:I really think these motors really are a 3000 W motor. 4000W if you only use this for short periods at this level.
After a recent hard ride with me on my Bomber and a mate on a 4000W HT powered Fighter, outer casing as measured with a Fluke infrared heat gun was as follows.
HT=> 70 degC
X5405=> 65 degC
Both bikes were riden with a mix of fast straights and steep tracks with both bikes using quite a few periods of full throttle.
With my higher output, I would accelerate significantly quicker, but we basically stayed together over the period of the ride.
Not quote sure if that's a useful comparison but I figured it gives a bit of an idea of what to expect.
Dlogic: What sort of bike is that you pictured? It kind of looks like a KTM but i suspect its a brand i've not seen before. How has your friend got on with the conversion?
Nothing else to update on this build yet, the motor arrived but i'm yet to order spokes, batteries, controller, Saint brakes, freewheel or CA yet.
Infact i'm yet to decide whether to go with 20s or 24s. The extra top speed of 24s is enticing but on the other hand, the extra range of a lesser voltage battery but bigger ah pack (per battery weight) is also tempting... decisions decisions!
Paul