Endless Sphere

Yes "5T"...I had this motor specially produced by MAC. I built a bike using the motor in a 26" wheel and did 48.6 mph with a 52v battery. It will be shipped in the original Styrofoam packaging that MAC shipped the motor to me in. This is just the motor...it will need to be laced to a ...

Front is a 2.4x26 Schwalbe Super Moto-X and the rear is a 2.5x26 Maxxis Hookworm.

Motor is a "5T" I special ordered from MAC.

The problem with Bonneville is the class structure is based on overall weight...sort of archaic IMO and developed back when the only batteries available were lead acid. The East Coast Timing Association currently follows the class structure developed by the National Electric Drag Racing Association...

RSwannabe...what diameter rear tire are you running? Still running the Hookworm's, if yes how do you like them? I am running a 29x2.6" Maxxis Ikon right now and the large diameter makes my overall gearing a little too high for my conditions...which in turn contributes to overheating. Not terrib...

The amperage limit is defined by what the battery can supply, the controller can transmit and the motor can handle without breaking if you are only going to do it for a short period of time. A MAC may be able to handle more than 60A at 58.8v for short periods of time, that is all my battery's BMS ca...

Before you start your build....you can't run over about 1,200 watts continuously or the MAC will over heat. You can push 60A with 58.8v temporarily without any problems. The MAC does put out more thrust/torque than any motor available for an ebike assuming you feed them both the same battery amperag...

UPS just delivered my 14s6p battery from EM3ev...it is a replacement for a HG2 cell battery that never would fully charge. The new hard plastic case that surrounds the battery looks very nice and protective and it comes with a triangle bag with Velcro straps to attach everything to your bike. Anyone...

Axle spin out or a broken axle...it depends on the combined stress...i.e. torque plus bending where the bending is a combination of the weight on the axle and the impact loading (hitting a bump or landing after a jump). A MAC running 52v/60A Battery/160A Phase puts out about the same torque as a QS2...

Based on my experience...if you are running all "bicycle" components i.e. frame, rims, tires, brakes, etc., about 30 mph is as fast as you can "safely" go without worrying about exceeding the capability of the components. Of course that assumes you are running "good" bi...

The MAC/GMAC will produce more torque per amp than any ebike motor assuming you feed the same battery amperage. That is one of the big advantages of a geared hub motor. I have been running 160 phase amps (55A battery amperage limit) and no issues with the gears or clutch .

markz...you know Grin Tech is in Canada. Maybe Justin can help you :D . I have to give a huge THANK YOU to EM3ev and take back anything and everything negative I have ever implied or said about them. Bought a 14s5p battery with HG2 cells back in Nov '19 and it never would fully charge. They sent me ...

I would NOT change cooling fluids if what you are running is working but if you have your motor open switching to a Low Viscosity Full Synthetic ATF like Dexron VI or the "Super Tech" brand of Low Viscosity Full Synthetic that Walmart sells will do three things for you... A. It will go to...

The presence of water (or any electrolytic fluid) will wreak havoc on bearings in a motor. They already endure a tough life living inside a constantly changing magnetic field that turns them into tiny ion pumps. On large AC motors the armature bearings can literally weld themselves to the armature ...

It is not about what is "legal" it is about not having a tire failure when you are going around a corner and leaving a lot of your skin on the pavement...that is not a lot of "fun". I had a tire explode at 35 mph...luckily I was going in a straight line and could come to a stop w...

Triketech....that is a cool looking and well designed trike you have .

About 1200 watts continuous is what the MAC can handle without overheating...unless you add some sort of auxiliary cooling. For short periods of time, I have run 60A battery and 160A phase with not problems whatsoever. I like Mobil SHC 100 for the planetary/ring gears....I put it on the ring gear ab...

Mighty Volt...will either one of the threads below help: https://endless-sphere.com/forums/viewtopic.php?t=51310 https://endless-sphere.com/forums/viewtopic.php?t=54422 Or you can buy the 5T MAC I have for sale and take it apart :lol: . If anybody else is interested in a 5T MAC new still in the box:...

magneato wrote: ↑

Aug 24 2020 12:03pm

I measure 4"

Thank You...must use a standard 20" hub which is 100mm or as you measured 4" .

That means a MAC motor designed for the rear wheel (135mm) won't work but a MAC designed for the front would (100mm) .

Can someone please tell me the width of the rear hub or the inside distance between the rear frame rails where rear wheel attaches for the Schwinn Shuffle?

Thinking about using a MAC motor but I want to make sure the frame is wide enough before I buy the motor.

Thank You

The Kv determines the rpm the motor wants to turn and is measured in rpms per volt. So a 12T MAC without any load will turn slower than a 10T MAC. With "T" being the number of times copper wire is wrapped around each pole of the stator...or proportional to the number of wraps in the case o...

The 5T I had custom made because I was going to attempt to set a speed record but it is still in the box and I never used it. I had planned to install it in a 29" wheel and only run it for a few minutes at a time. If somebody wanted to use it in a 20" wheel, it would work great but I would...

Bullfrog, have you already purchased an motor? Yes...I just received my MAC motor today 10 Aug 2020. I had a 5T MAC custom wound for high speed by MAC BUT I had a little motorcycle accident that is going to keep me off of two wheels for a while. I have the 5T Freewheel MAC listed in the marketplace...

Grin tech has a youtube video where Justin talks about using two wheel drive...IMO I would not mix motor type, you'll end up with one doing all the work.

If you have a way to charge the pack at a current that is less than the balancing shunt current (typically 50mA or so), you could let it go for a long time and it should eventually bring up the low cell groups. If you can access the cell connections at the BMS, it would be faster to manually charge...