Search found 401 matches

by Bullfrog
Feb 24 2021 8:18pm
Forum: EBike Technical
Topic: Geared hub motor sticky freehub when axle is loaded
Replies: 6
Views: 240

Re: Geared hub motor sticky freehub when axle is loaded

Thanks...I did a little research and the XF19C is a 10 pole motor where the MAC is a 16 pole. That alone doesn't mean anything besides the MAC may have better torque and the MXUS may turn with fewer losses but the MXUS also has a 5.8:1 reduction where the MAC has a 5:1 so in the big picture they are...
by Bullfrog
Feb 24 2021 7:16pm
Forum: EBike Technical
Topic: Geared hub motor sticky freehub when axle is loaded
Replies: 6
Views: 240

Re: Geared hub motor sticky freehub when axle is loaded

chris09...where did you buy your MXUS XF19 motor?

I was looking on the MXUS web site and I couldn't find it.

Thanks
by Bullfrog
Feb 24 2021 5:16pm
Forum: EBike General Discussion
Topic: Direct Drive Motors-Internal or External Controllers?
Replies: 10
Views: 433

Re: Direct Drive Motors-Internal or External Controllers?

If you want acceleration then get a geared hub like the MAC...as long as you are limited on the amperage your battery can supply it will out accelerate any DD available. By limited I am talking about roughly 50A battery current which is what most of the better 14s Li Ion batteries are limited to due...
by Bullfrog
Feb 24 2021 12:29pm
Forum: EBike General Discussion
Topic: MAC motor worth it?
Replies: 81
Views: 4185

Re: MAC motor worth it?

In the past, Cutler Mac shipped a "sample". One motor one time, second-order has the 8 piece limit. Exactly...you can do a one time buy of one motor as a "sample" but your second order has an 8 item minimum. I already used my "sample" buy. EM3ev stopped selling the MAC...
by Bullfrog
Feb 24 2021 12:22pm
Forum: EBike General Discussion
Topic: MAC motor worth it?
Replies: 81
Views: 4185

Re: MAC motor worth it?

sorry ,didnt know they dont shipp to USA.Yes they are extremely pricey. What about the mxus xf19c motor,i belive it is stronger and can take more power.Also you can order the speed you want. I ordered mine from here: MXUS EBIKE CONVERSION KIT Claire Jin Skype: mxus021 Mail: Claire@mxusebikekit.com ...
by Bullfrog
Feb 23 2021 8:57am
Forum: EBike General Discussion
Topic: MAC motor worth it?
Replies: 81
Views: 4185

Re: MAC motor worth it?

ebikesolutions sell Mac motors 250 w and 500 w.both are same motors just diffrent markings.They call it Puma https://www.ebike-solutions.com/en/shop/pedelec-e-bike-parts/motors/?p=2 Thank You Very Much. Just figured out they are quite pricey (over $500 USD plus shipping) and don't ship to the US :c...
by Bullfrog
Feb 18 2021 11:12am
Forum: EBike Non-hub Motor Drives
Topic: My next e-bike build - BBSHD with hydraulic IGH
Replies: 74
Views: 25645

Re: My next e-bike build - BBSHD with hydraulic IGH

Regarding battery mounting....If you have the fittings for a water bottle you can use them or you can use a couple Bottle Bobs from Grin Tech...they allow you to attach just like the water bottle fittings but use hose clamps to hold the Bottle Bob mounts to the frame. In addition, I use two hose cla...
by Bullfrog
Feb 17 2021 5:02pm
Forum: EBike General Discussion
Topic: MAC motor worth it?
Replies: 81
Views: 4185

Re: MAC motor worth it?

I'm sure you *could* install *a* clutch into a GMAC (just not a plain old MAC clutch), but you would probably have to design it and have it manufactured; I doubt there's an off the shelf part that would just pop in there. It also may require changes to other structures inside the GMAC depending on ...
by Bullfrog
Feb 17 2021 10:08am
Forum: EBike General Discussion
Topic: MAC motor worth it?
Replies: 81
Views: 4185

Re: MAC motor worth it?

Here's a thought. I absolutely LOVE my MAC 12t for my application. Unfortunately they seem to have disappeared on the market for some weird reason. My question is, would there be any way to install a clutch in a GMAC motor to take advantage of the design changes (torque arm and cable exit location)...
by Bullfrog
Feb 17 2021 8:37am
Forum: EBike General Discussion
Topic: MAC motor worth it?
Replies: 81
Views: 4185

Re: MAC motor worth it?

colsaunders2....Where did you buy your MAC and what turn "T" was it advertised to be? I bought a "locked plate" like in your motor from EM3ev back when they were selling MACs but I have note installed it yet. I am curious to see if it works with my rear freewheel (not cassette) m...
by Bullfrog
Feb 17 2021 8:26am
Forum: EBike General Discussion
Topic: Geared Hub Motor Quality
Replies: 66
Views: 2665

Re: Geared Hub Motor Quality

How badly do these things get beat up when used off road? i'm not talking about grinding up 5 to 10 minute inclines, Here it's generally pretty flat and the most climbing you'll do may be for a minute. Do the gears get pretty thrashed when you break and regain traction? The clutches fail eventually...
by Bullfrog
Feb 16 2021 10:31am
Forum: EBike General Discussion
Topic: 20" / Foldable fatbike / Bafang G60 750w / 48v 20ah battery / 48v 22a controller
Replies: 10
Views: 1309

Re: 20" / Foldable fatbike / Bafang G60 750w / 48v 20ah battery / 48v 22a controller

Based on the run I did using the motor simulator, top speed using a 20x4 fat tire and a 52v battery is about 21 mph. One problem with the G60 motor is that it uses the Z910 connector and that along with the small phase wires limits the amperage you can use. I considered the G60 until I talked to Jus...
by Bullfrog
Feb 15 2021 5:32pm
Forum: EBike General Discussion
Topic: Geared Hub Motor Quality
Replies: 66
Views: 2665

Re: Geared Hub Motor Quality

just to take things a step further than my previous question, i noticed many of the entry to mid level fat bikes on the market using hubs from bafang, shengyi and now even mac on some juiced iirc. Presumably most will get minimal real off road use past dirt paths etc But do you figure hubs hold up ...
by Bullfrog
Feb 14 2021 11:00pm
Forum: EBike Build Threads
Topic: Radwagon 72v GMAC Phaserunner Build
Replies: 89
Views: 9390

Re: Radwagon 72v GMAC Phaserunner Build

I don't have the L10 connector...all of my MACs are the older three phase wires with a six pin connector for everything else.
by Bullfrog
Feb 14 2021 8:02am
Forum: EBike Build Threads
Topic: Radwagon 72v GMAC Phaserunner Build
Replies: 89
Views: 9390

Re: Radwagon 72v GMAC Phaserunner Build

I don't know the answer to your question...if nobody posts helpful info soon, I'd either call or email Grin Tech.
by Bullfrog
Feb 13 2021 7:31am
Forum: EBike Build Threads
Topic: Radwagon 72v GMAC Phaserunner Build
Replies: 89
Views: 9390

Re: Radwagon 72v GMAC Phaserunner Build

Hey guys I just got my gmac installed with my phaserunner v2 :) Did you go with the 8T or the 10T...I like the 10T a little better personally but they are both good motors. What voltage are you running? The L10 connector sure is convenient but it won't carry as much amperage as the older bullet con...
by Bullfrog
Feb 11 2021 1:02pm
Forum: EBike General Discussion
Topic: Geared Hub Motor Quality
Replies: 66
Views: 2665

Re: Geared Hub Motor Quality

Nice thing about a mid drive off road is it handles better than a Direct Drive motor in the front or rear due to weight distribution. The MAC in the rear did not handle as good as the BBSHD in the middle when I pushed my bike harder off road. And of course a heavier DD motor would be even worse. All...
by Bullfrog
Feb 11 2021 12:45pm
Forum: EBike General Discussion
Topic: Geared Hub Motor Quality
Replies: 66
Views: 2665

Re: Geared Hub Motor Quality

How badly do these things get beat up when used off road? i'm not talking about grinding up 5 to 10 minute inclines, Here it's generally pretty flat and the most climbing you'll do may be for a minute. Do the gears get pretty thrashed when you break and regain traction? Manbeer...I would not recomm...
by Bullfrog
Feb 10 2021 7:33pm
Forum: EBike General Discussion
Topic: Geared Hub Motor Quality
Replies: 66
Views: 2665

Re: Geared Hub Motor Quality

Good links but MAC has made changes since all of those ended :D .

A lot of their advancements were thanks to Paul at EM3ev and Justin at Grin Tech.
by Bullfrog
Feb 10 2021 5:34pm
Forum: EBike General Discussion
Topic: Geared Hub Motor Quality
Replies: 66
Views: 2665

Re: Geared Hub Motor Quality

Thanks onespeed.

Not sure if BMC has kept up with MAC or not...MAC has made some improvements in recent history where they went to thinner laminations, improved the gears and improved the clutch. At one point BMC was slightly better than MAC...I have no idea how they compare at this point.
by Bullfrog
Jan 30 2021 12:51pm
Forum: Electric Watercraft
Topic: Shamrock, 25 foot sailboat electric conversion with an ebike hub motor
Replies: 46
Views: 4865

Re: Shamrock, 25 foot sailboat electric conversion with an ebike hub motor

Why not use a Rim Driven Propeller...may be a little while before they are commonly available but here is a short introductory video and IMO they are nothing more than a Direct Drive motor with fins :lol: : https://www.youtube.com/watch?v=Te_xejpriFM
by Bullfrog
Jan 30 2021 12:49pm
Forum: Electric Watercraft
Topic: Electric fishing canoe
Replies: 13
Views: 3350

Re: Electric fishing canoe

Just started learning about Rim Driven Propellers.

Here is a good introductory video: https://www.youtube.com/watch?v=Te_xejpriFM

Basically a Direct Drive electric motor with fins :lol: .
by Bullfrog
Jan 29 2021 1:15pm
Forum: Electric Watercraft
Topic: Electric fishing canoe
Replies: 13
Views: 3350

Re: Electric fishing canoe

Willow...what battery voltage did you use and did you drop it before it got to the motor using a DC:DC converter? I am considering doing something similar to what you did with a 12' JON boat and using a 52v Li Ion battery. Another option for my 12' JON boat is to start with a DD bike motor similar t...
by Bullfrog
Jan 28 2021 9:58am
Forum: EBike General Discussion
Topic: Geared Hub Motor Quality
Replies: 66
Views: 2665

Re: Geared Hub Motor Quality

OK first off there is no bigger MAC/GMAC fan in the world than me BUT if you are going to ride a heavy bike off road with big tires...you need a mid drive where you can change the gearing. I started with a 12T MAC and eventually laced it in a 20" wheel trying to keep it cool but it still got to...
by Bullfrog
Jan 28 2021 8:51am
Forum: Motor Technology
Topic: Leafmotor 2000w
Replies: 15
Views: 718

Re: Leafmotor 2000w

Thanks yes sorry 'overclocked' that was a little for effect, I build a lot of PCs, but yes pushing high current and or voltage for the fun of experimentation. I am really not interested in speed, its a bonus 20mph on throttle only would make me happy, but its long slow hill climbing ability I want....