I’ll post a write up in a couple hours, sp stayed tuned
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Guess I’m staying up late
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check back 1pm California time still hard at work
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Any heat issues?
I’m in Oregon, might be up by 1pm. I’ve got at least another 2 hours at work. Probably three if I keep looking at my phone.
So as of yesterday my testing has come to a halt since I sold my deck and am waiting on my @naf hyperbeast. During testing I used a 12s4p 30q 518wh pack and running at max speed with hard braking and rough hilly terrain I was pulling 19-20wh/mile. Being more conservative on the smoothest Irvine roads I found 12wh/mile seemed to be common. Take into bite these will fluctuate based on rider weight im barely 130ibs. My friend on the other hand at a solid 230ibs was pulling 22wh/mi on the nicer terrain and a slight increase of 27wh/mi on my hilly terrain. However it is worth noting he was braking going up hill and then accelerating constantly and he put them through a couple extreme settings that most people ordinarily wouldn’t be running these at. To my own personal delight the urethane has held up quiet well, especially on my smooth roads. When I take them onto the asphalt vibrations are much more noticeable but considering how thin the urethane is it handles them very well. Again on my raptor 2 my brain would literally be rattling in my skull in the same conditions. On 12s I’ve taken them up to 31mph however I never attempted that speed again because I am still recovering and don’t want to go backwards. The acceleration is noticeable even at 230ibs and me and my friend agree that they have similar torque to the raptor 2, this may be in part due to the 10mm magnets in my set but they handle very well. The set I’m testing with was not completed with the same amount of perfection yours will have but hummie was in a rush to get these tires tested. So one motor heats up slightly more than the other however this is due to one bearing shoving more frictions than the other and I don’t believe it is anything out of the ordinary. Even with that minor issue the ride on these is beautiful and I could say that they draw some of the smooth riding abilities of the Carvon’s and similar torque of the r2 hubs and combine them into an amazing ride. Unfortunately I haven’t been doing heat checks as much as I should have but I have so far not gotten them hot enough to not firmly grip after one of my runs. My 230ib friend did manage to get them pretty warm but not past 212 degrees(we put a drop of water on the outer metal can and it only got warm but did not boil or dissipate) I may have forgotten to include something so just ask, I would love to get up and running again currently I’m out a deck though so until then my testing has come to a bit of a halt
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Thanks man awesome stuff. Can you compare brakes between the hummeis, carvon and r2? And your guess for top speed on hummies at 12s?
brakes on r2 kinda sucked on slow mode but were much better on fast mode, sort of abrupt for a lightweight guy such as myself though. The carvons are much more gradual however you wont be able to stop on a dime and you sort of have to constantly look ahead because they need a bit more distance to come to a complete stop. Hummies i feel have much better braking i can stop fast but not too hard to throw me off, and i’m not picking favorites here i really do like the raptor 2 hubs and the torque they have but they get wayyy too hot and the urethane sucks ass. carvons are great cruiser motors and have the best efficiency but the braking isnt so great, hummies don’t have as much urethane so they wont feel as great as carvons but they feel pretty damn good and the torque and braking redeems them. Top speed I want to put at 35mph? but don’t quote me on that i have a friend willing to take them up to top speed after I get my deck. I will say this though these are easily the best hub motors available for purchase right now, the r2 aren’t sold separate, and the carvons are constantly delayed with few people knowing any information. the urethane is coming in a couple more weeks for these and by then hummie should be shipping them out. But these have been tested for quite a long time now and he didnt even bother selling you guys his v3 hubs because he wanted better. If you guys are on the fence rn just know he has been providing you with constant updates and while no one like to wait these hubs have definitely been worth it
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Can someone get me the distance between the inside of the left and right wheel on the hummies V4 set up? Thanks!
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145mm,hjdfasdjflk
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Good man! Thank you very much!
Any news on the tires?
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nope but assume the best and should be like 2 weeks.
awesome dude…very solid and impressive
my calculations are in agreement with that estimated top speed, I came up with 35-38mph estimated top speed on flat ground and 73lbs peak thrust for the 83mm tires vs ~55mph and 46lbs peak thrust assuming upgraded 130mm tires (also assuming 50v bat, 60a battery & 60a motor current limits per motor, 2 motors, 85kv, 0.07ohm winding). ohmic heating at full throttle looks to be about 252w per motor @ 60a motor current.
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@hummie whats the pricetag on these and can they be ran at 12s? im thinking of building a hub build for commuting
for sure can do 12s. almost any motor can do 12 or whatever really and the limit would be the esc being able to do it (as long as it doesnt go too fast for the bearings, which we dont do). there seems confusion about voltage of the BATTERY and what it does in a motor. it will not make your motor run cooler to run more voltage and actually the opposite. So unless you really will want to go over 30something miles per hour and instead will more likley be riding in the high 20s anyway, you will be more efficient, keeping the motor cooler and getting a bit better range, running 10s. In a power line in the sky or in the wiring for the board’s battery yes higher voltage will lead to better efficiency but not the motor. the esc converts the amps and volts that come from the battery into a different ratio for the motor and you can control that with both the motor and battery amp limits on the vesc. i didnt realize the motors went quite so fast on 12s as i never really checked… I always ride FOC which is a bit slower. @willpark16 is riding 83mm tires,…the new coming are actually 84mm so a hair faster. It would be worth going to 10s unless you really want that speed but then again…i rarely was at that speed and while doing some really long steep stuff the temp of the motors stays within what i’d consider an acceptable max temp. of 160f. the motors COULD go up to 300f as the magnets are good to that temp and the winding wire is good to 400f for thousands of hours, and some of the bearings have grease good for 300f…but the tire polyurethane is surely the weakest link. what temp it can do, you tell me!!! so far ive been really amazed by these prototype tires’ durability and ride quality.
130mm tire??? how bout a 90 or 97 next. but guys just ride these with the 84mm now and give it a bit of time and I said I’d get the bigger tires made and will. what’s going to have to happen is a kickstarter or some other way to get a large investment. Now i have just enough money for what we are getting and will be able to make a couple motors beyond but business is stuck really held back by not having…like 30,000$ for materials. all the money i raised in the past went to get these parts for 100 motors and about 70 are accounted for. So myself and @professor_shartsis and probably @evoheyax with some others will be quickly throwing together some kind of video and straight to kickstarter. Ive stopped taking orders for motors for the last couple weeks until everyone who paid gets theirs and want to spend time not selling but doing this video. If any of you have any experience or desire to be involved in making this kickstarter video lets talk when the tires come.
i just wrote aend again to hear whats up. last i understood it would be like 2 more weeks for the tires and will update you when i hear the latest.
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But…
deckoz/pshaw experience throws everything out the window.
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Wish I wasn’t late to the party. I’ll be waiting for that kickstarter. Hopefully there will be some early bird special. My hummie deck needs hummie hubs. Thanks for all the rad esk8 work.
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