Endless Sphere

Just so there is no confusion, there is no such thing as loaded Kv . Kv is the rotational speed / back EMF. By definition Yes certainly. Please excuse my ignorance as a layman with a lot of these terms. The other option being a higher voltage on the lower KV rated hub. I believe there are definitel...

So, comparison of QS205 50H V3, 5T vs 4T. That simulator is priceless in knowing how and what ya gonna get. I think. Yeah I did just about the same exact calc but with 100v. Looking at the part throttle areas vs efficiency and consumption, get interesting between the two. Like the speeds you get to...

I ride the the h50v3 11.39kv in 24’’ wheel with 3’’ tire. Feed it 25+ kw acceleration bursts with 24s RC lipo. I just bought the same thing. The 11.39kv in 24’’ wheel with 3’’ tire....and I plan 300A 24s. Dont know bout the cells I plan to use yet. What I have.. or something new. I might go 30s jus...

I understand My question is, when used on the battery's main wire, if using a BMS that stops at the max current of the cells, then what is the remaining job left for the fuse? only for physical accidents and short circuits? Question is, how much current flows when sticking the positive and negative...

Cannot decide what Kv I want still. lol. Are u considering a qs205? Would you happen to know how to measure a motors Kv? Yes. I am buying two or more.. Just cannot decide what to run them on, or the turn count yet. The 5T is 9Kv, very similar Kv to the 35H 205hub on my bike now. (8.56Kv). Good tq o...

Important information
Safety Information

When it's 130 ℃ inside of motor (in 30s), the current should be limited 50%. When it's 150 ℃, the controller shut down. When it drop down to 110℃, the controller work again.

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Cannot decide what Kv I want still. lol.

Show us the formulas you used?

Am new to riveting and Would appreciate any help directing me towards the right rivet for the job and the right tool. Is it bad that I seriously considered building batteries with this style of rivet? Lol. https://www.ebay.com/itm/20-pcs-convertible-blind-rivet-flangeless-snap-fastener-3-8-studs-DO...

300A 24s Brand New w/Screen. Located in Fleetwood Pa.

150$ shipped domestic.

Limit the amps to limit the power. This can be done by modulating the throttle value. Never use full throttle, is one way. Another is make your full throttle voltage cap out at 3.7v or something, with diodes to drop ( top out high) V.... not the full 5v that the controller expects... but a lower 3.8...

Why not run them both through the Grin Tech Motor Simulator and see which one comes closer to giving you the performance you want. As far as the MAC gears handling 400+ lbs...not a problem IMO. The clutch would be find too. Overheating will be your potential problem. Oh yeah I know how to use that ...

However, running hub motors with too much power, and too high kV for the speeds they can actually reach regularly, seems to be the (dumb) formula around these parts. If the power the motor makes at 80% of its unloaded RPM isn't enough to propel you on flat ground at 80% of its unloaded RPM, I think...

For me to forgive you, I would demand to know how you produce these awesome charts :lol: Unrelated indeed but super interesting! About power, yeah we all cross the 10kw here So yeah, they cook stuff easy with our hot ass weather. . I bet it is awesome though. I know some of yall go pretty hardcore ...

I would say that there's a slight problem with your temperature channel. Normally you wouldn't see such sharp dips in the temperature data. Forgot to ask, how are you venting the hub in order to maintain ambient pressure internally ? I think it is the speed of the sensor. You do not see alot. The s...

Having hall, phase, controller problems myself. Reading about issues and repairs. This thread is very interesting and helpful for the information it contains. Appreciate all the posts and sorry for your troubles. Got to the end and no answer? Any updates, solutions to this gremlin? Well, I did a......

the ATF is that Dexron?? I think Chrysler ATF would be bad for bearings? Bearings have seals. They are sealed cartridge bearings ( and rather large ones, might I say). I sealed both the flange, and the races, of the hub, and drilled out a brake bolt hole. Anaerobic Loctite and not a drop leaked yet...

Unrelated, totally unrelated but I just wanted to say I friggin luv Oil cooling. I got about 100mL of the atf stuff in my hub and that, with the Grin thermal pid rollback, is actively giving me the best power my hub ever gave. Sometimes giving a good 40-50A for miles on a 20A hub motor that fried it...

If I was going to go through the effort ... my first choice ...a lot easier ...difficulty ... any advantage ...geared hub mid drive...the gearing ...direct drive motor. ...me,...g advantage ...red hub motor... torque ... it is "geared". With..you CAN ...gearing s... geared hub motor sort of ... app...

999zip999 wrote: ↑

May 14 2020 2:20pm

Yea tried of the wieght I heat my bmc600 fs like my edge 1,500 but have more time to heat my muxus 3,000 v3 4t But this is my wieght limit A 205 to heavy.

I have always wanted to try a BMC V4 as a mid drive.

Heres $0.60c / Wh. Some good reviews I heard a while back. I know some people who flew helis with them good. In stock Us free returns. Says it ships to Canada. https://www.ebay.com/itm/HRB-6S-5000mAh-22-2V-LiPo-Battery-50C-EC5-for-HELI-PLANE-QUAD-CAR-TRUCK-FPV/264494047633?_trkparms=aid%3D1110004%26...

I have never done any real wheelies on anything, despite having ridden I used to love wheelies, owned a few bikes that could pretty easily. I once tore the valve stem off a chrome wheel at speed on the front of a Kawa comming down at about 90-100mph. Wheelies are very dangerous if they are unexpect...

1/2 the heating with 4x the mass equals 1/8 the temperature rise. Instead of a my 30° rise, yours is probably 4° over the same amount of time. W/Ah is the figure you want to kno. W/Ah. iced salt water bath? I was thinking alcohol. Lol. So many alcohols in this world. So many.

Hi and welcome to the forum. Where are you located? I can install a set of ebike parts on any bike, if you want to choose the kit. Per hour labor. Or I could sell youwhatever bike you want built, if you like, and budge the have it ( er, I mean, have the budget... ) . Welcome to the forum, research h...

And you will only ever be building your own packs with used cells. And skilled labour time costs money And Used EV cells do not lend themselves easily to a “normal” the trick is to plan ahead,, watch for the HK clearance sales, and buy when the packs you are using are available. All absolut6ly true...

Man, I'll never use a Hobbyking lipo in an ebike again. 500$ pack that doesn't show on time and is dangerous? Nah. Yall know what I like. I have to buy some lipo packs for the helicopter soon. Then I will go HK or some other RC groups or Helifreak recommended pair of packs.., or two pair.. but... Na...