Golden Motor Magic Pie review

[pdf]

Does anyone with this setup have any quantitative information about the performance of it on a grade?  For example, you might report %grade it can climb, motor-only.

[Hardcore]

I could take a picture of a hill that it could climb but no specific grade about the hill.

[Leslie]

I could take a picture of a hill that it could climb but no specific grade about the hill.

Yes I nice picture of a hill is what I need tonight. ..

LOL its ok, if you want to, it would be nice to get an idea as it sounds really steep.

[e-lmer]

We need a couple of references too.

Take a yard-stick (meter stick?) and tape a string to it,
then hang it from something 10 yards (meters, please specify)
away from the camera so we can judge level and
the scale.

You should also measure the linear distance to some landmark at
or near the top of the hill so we can use trig. to get the slope.

Better yet, give us the Longitude and Lattitude and we can look
at it on google earth!

[Hardcore]

there are no hills here for cars or bicycles, just some MTB trails in the woods wich make googling almost impossible.

[Hardcore]

about the yards and stuff, you mean like a dragrace(600 meters or so) with the ebike?

[pdf]

Still interested in some quantitative indication of the hill-climbing ability of this setup, if any of the early-adopters have some experience.  Thanks in advance.

[Hardcore]

I think this is the best motor for hills that goldenmotor offers right now.

[pdf]

I've heard from the GM folks that this motor is supposed to be a good hill climber. 

I am interseted in quantitative data I can compare to other motors.  On another board I suggested people find the equilibrium speed of different motor/controller/battery/weight combinations at different grades without pedaling.  That way, we can see that motor X will climb a 8% grade at 12 mph but motor Y can't climb an 8% grade and reach an equilibrium speed.  Perhaps motor Y can reach an equilibrium speed on a 4% grade, for example.  That way, we can infer that motor X is better at hill climbing than motor Y. 

I am curious how this motor/controller combination compares with others.  Most of the information on motors climbing hills is vague on the details and amounts to statements like "this motor is great at climbing hills".  What one person might think is great would be different for another so I am interested in quantitative information; speed, grade, weight, controller, battery capacity and discharge rate, etc. 

[Hardcore]

I cannot gather that information as I don't have hills here. sorry

[5tonica]

That "Comparison Table" between motors is good. However is missing Torque Power of Magic Pie which is very relevant... 

[Hardcore]

yes it is

[trike20]

I had my Pie out for a run today. I run at 48v on a trike. Lots of hills here.
I had the Pie shut down on a long hill. I had just reached the hill top and was on the way down doing regen for 50 Yds.
I think the shut down was from overheating after the long hill (150 yds. 20% grade.)
It came back alive after 10 min of setting. The motor was just warm on the outside but the inside must have been really hot. I don't see how the controller heat can get out of the case fast. It's just dead air inside the Pie.
I would guess I was at 1500 W for 3 min to do it in.
I am going to do the run again with instrumentation attached to see where the limit is.
Does anyone know the internal temperature shutdown setting inside the Pie?
Outside air was 70 Degrees F and 5 MPH on the hill.

[Harvey_Mushman]

You have the FIRST front MP that we have ever seen.  That makes ~5 people that have ever seen an actual MP 

[trike20]

It's really a back MP. The fork is modified to be wider to fit the rear PM.
Later today I also put a 400w geared motor (5-10MPH) and chain on the freewheel. I use it as a low speed boost to get up 30%+ hills. It is also good for laying patches of rubber as I start out.
Pics and videos to come next weekend....