John in CR wrote:El_Steak,
Still shooting blanks I see. You and Methods better get those Paypal accounts ready, because you're about to owe some people new motor covers. I was pushing the centrifugal fan approach back in Sep/Oct, because I knew it would work even before trying it. It's one thing to take a position, but it's quite another to vehemently shoot down another idea when you don't understand it. It's not like I didn't explain it, because I tend to over-explain for to the broader audience, not just those who actively post. Arguing against something that's already been proven by myself and ZapPat astounds me. ZapPat even got good enough results that he didn't feel the need to try to refine it further, yet you refuse to believe. Now El_Steak has proven the ineffectiveness of mid-radius holes with measured data, that he has so generously spent his valuable free time gathering and sharing for the benefit of all.
John in CR wrote:Were you able to see the temperature gauge while riding, so you have a bit of "feel" for the peaks during climbs
El_Steak wrote:That being said I still look at the temps a bit and didn't notice any "quick jump" in temperature as I go full throttle climbing. Temperature goes up fast, but progressively. If it had spiked above 135C during the climbs, my thermometer would have beeped, which it didn't.
One thing I noticed though is that on my long 6 km stretch, the temperature would stabilize around 132-133C after a while and stay there. Then at the end of the stretch when I release the throttle and come to a complete stop,the temperature would shoot up in seconds close to 140C and then go down quickly.
On my previous motor, my sensor is placed on the stator close to the windings (similar to icecube and Doc). The behavior is different in that case; there is always a delay in the temperature reading.
John in CR wrote:I understand that it's the current through the windings creating most of the losses in a motor, but since they have a torque constant, why is it wrong to look at power out from the battery as long as you consider the motor's efficiency curve?
John in CR wrote:Arlo1,
That's why I handed you the shovel, just for the entertainment value in seeing you dig the hole deeper. BTW, just like I said before:
1. You owned those holes as soon as you made them bigger to copy your hero Methods.
2. During your wheelie sessions you're not running anywhere near the power you claim.
El_Steak wrote:OK, got to go give some time to the GF, shes not too impressed with my testing...
John in CR wrote:The higher peak amps is interesting. I wonder if that's just because of cooler windings lowering the resistance. Did you notice any difference in how hard the bike pulled?
John in CR wrote:How about the sonics, did you get any whistling? Did it change that other noise the 9c is known for, or did yours not do it to begin with?
John in CR wrote:Can I get you to do 1 pic? I'd like to see the cover from the outside but with the view parallel to the motor. I want to see where the hole placement is in relation to the flange where the cover's bolt holes are. I ask because I think you can draw the flow out from even closer to the windings by butting those holes right up to that flange where the cover is near perpendicular.
John in CR wrote:One other question, how did the covers feel to the touch? That's really all I know, since I've yet to use a temp gauge, which will change shortly.