Nick R. wrote: ↑
Mar 24, 2018 7:32 pm
...,I live in Fla. so terrain is flat, max speed about 20 to 25mph
,I weigh 172lbs, desire about 30 to 40 mi round trip
...My trike is a Catrike Expedition with a 26" rear wheel
ScooterMan101 wrote: ↑
Apr 12, 2018 1:38 am
...You can get the Mac motor and all the other components from the place that has been selling the Mac motor for years ... Em3ev.com
I forgot the owners name, but when I have e-mailed them Paul who works there is very helpful. and I mean Very . They are in China , But have english speaking people since the owner is British , living and doing business there.
The 10 T Mac would be very good on your rear, they make a version that takes a cassette so if you have more cogs than 7 on the rear the cassette version is easier to just transfer your cassette over to it.
Stay away from Falco - they are unique with their 5 phase system that flies in the face of the industry-standard 3 phase approach, offers little real advantage, and locks you into their motor/controller pair. You will not be able to replace either without replacing both.
+1 for EM3EV
Paul Lynch is the British guy who owns EM3EV and a longtime ES member. He has worked closely with Mac for many years and is the primary reason for the many upgrades to the motor. EM3EV has always built their own batteries, has been shipping batteries with cell-level fusing for some time, and their balance leads have been fused for many years. These are top quality batteries from a long time manufacturer (not reseller).
You don't want a DD motor - if anything craps out on your ride, you don't want motor drag getting home. This may not normally be a big thing, but in your situation it doesn't appear to be a good choice. In contrast, a gear motor will give you freewheeling to disengage the motor when pedaling - the Mac and eZee motors are the biggest. There are smaller gear motors out there that would work for your application but here's some thoughts going down the Mac path...
The most popular choices in the Mac line are the 8T and 10T. The 6T is a very fast motor best suited for smaller wheels and the 12T is really slow and needs higher voltage to make good speed. The 6T and 12T are arguably not good choices for your application. Considering your speed requirement, an 8T at 36V or 10T at 50V should work out fine.
Taking a quick look at the simulator and your stated needs, here's a quick run using a Mac 10T and 50V 14.3Ah battery on the flat and assuming you are not pedaling at all.
There's a lot of stuff there, but the biggies for the 30,000ft view are the 44mi range and the 27mph top speed. You want to choose a top speed about 125% of your highest cruising speed so a good max cruising speed with this setup would be 80% of 27.7mph = 22mph. This gives you some headroom to be able to accelerate since the motor isn't spun out with nothing left to give.
Your battery will age and you probably will only be charging it to 90% to get longer life so the estimated 44mile range is going to be no more than 40mi if you run wide open at top speed for the whole time. Assuming a much more conservative 78% throttle to get the 22mph max cruising speed mentioned above, your range will be a max of 60 miles or so. Here you can play with the Ah rating of the battery to get the range you want. Anyhow, you get the drift - the bit of extra power above your base requirement will be welcome in the face of headwinds, etc. that will eat up power PDQ.
Depending on how handy you are, you could add a Cycle Analyst 3 and a Sempu torque sensing crank to add PAS and other features, but that's in the 'add-on' category that you might approach later. Anyhow, you can get all the parts from EM3EV for one-stop shopping. If you get a CA3 for it, it will come pre-configured for your setup and ready to go.
Anyhow - one possible solution. There are many opinions, but I encourage you to try out recommendation in the ebikes.ca simulator to see if they will do the job for you.
Best of luck with your project.