high turn count 9C motor.

Get all your technical information about electric bikes here.
Post Reply
User avatar
rkosiorek   1 MW

1 MW
Posts: 1770
Joined: Jan 18 2007 2:55pm
Location: Belleville, Ontario Canada

high turn count 9C motor.

Post by rkosiorek » Aug 05 2009 8:34pm

searching throught he threads i found some mention that the regular 9Continents comes in basically 2 flavors. a motor with 6 turns for the 20" wheels and a model with 7 turns for 26" wheels.

there was also some suggestion that at one time or another 8, 9 and 10 turn versions were also made. i'm looking for one of those 8, 9 or 10 turn motors in a rear axle for an application that requires lots of torque. lower rpm is okay. ebikes.ca only sells the 6 ot 7 turn models.

anyone know where i might be able to find one of them high turn count 9Continents motors?

rick
DISCLAIMER:
We will not be responsible for damage to equipment, your ego, blown parts, county wide power outages, spontaneously generated mini (or larger) black holes, planetary disruptions, or personal injury that may result from the use of this material.
- Samuel M. Goldwasser -

User avatar
Tiberius   10 kW

10 kW
Posts: 871
Joined: Jan 14 2008 7:52am
Location: Rural England

Re: high turn count 9C motor.

Post by Tiberius » Aug 06 2009 1:55pm

Hi Rick,

I was just about to ask a related question. I have seen the Nine Continent motors listed as 9x7, 7x9, 6x10 and 10x6. Presumably this means n turns of m wires in parallel, so one of the numbers tells you the kv of the motor.

But are there really 4 versions, or is it 2 versions and some careless listing?
Which number is the number of turns?
I've also seen them listed as 205 or 154/205 series, what does that mean?

Is there a datasheet somewhere?

Nick

User avatar
TPA   10 kW

10 kW
Posts: 923
Joined: Jul 16 2008 1:35pm
Location: Beaumont, Texas

Re: high turn count 9C motor.

Post by TPA » Aug 06 2009 2:35pm

Jason might be able to order you one next time he restocks.

ebikekit.com
My Ebike is built with a hub motor purchased from www.ebikes.ca
It has performed flawlessly since it was installed. I cannot
recommend the professional folks there enough.

User avatar
rkosiorek   1 MW

1 MW
Posts: 1770
Joined: Jan 18 2007 2:55pm
Location: Belleville, Ontario Canada

Re: high turn count 9C motor.

Post by rkosiorek » Aug 07 2009 12:27pm

thanks, TPA. i've already been in tough with both Ypedal and jason.

as far as the specs for the motors goes. i'm not sure. which is listed first. but i know that they were available as 6 turns of 10 strands, 7 turns of 9 strands, 8 turns of 8strands, 9 turns of 7 strands and 10 turns of 6 strands. that is because they can only fit 60 odd strands into the slots of the stator. the 6 turn and 7 turn motor are the most common. the 9 and 10 turn motors are lower RPM higher torque motors. often the high turn motors would be used in the front wheel of a pedi-cab or cargo trike. so generally these are found as front wheel only unless a special order is made.

all of these motors will produce the same peak power. power is RPM X Torque. the limit is determined by the BEMF generated. the BEMF acts like a resistance that increases with RPM. eventually it will increase enough that the RPM cannot e increased any farther. BEMF is also proportinal to the number of turns. more turns = more BEMF /RPM so the RPM limit will be reached sooner. to balance it more turns also equals a stronger magnetic repulsion which equals more torque.
so that is the balance that much be reached. the balance of rpm and torque.

but i think that the number of strands is listed first. so a 9X7 would be 9 strands and 7 turns.

i read somewhere that the rotor diameter is 205mm and that is where the 205mm rating comes from. no clue about the 154.

rick
DISCLAIMER:
We will not be responsible for damage to equipment, your ego, blown parts, county wide power outages, spontaneously generated mini (or larger) black holes, planetary disruptions, or personal injury that may result from the use of this material.
- Samuel M. Goldwasser -

dnmun   100 GW

100 GW
Posts: 16190
Joined: Jun 09 2008 1:32pm
Location: portland, or and loveland, co

Re: high turn count 9C motor.

Post by dnmun » Aug 07 2009 1:45pm

i think the 154 is the geared hub motor, with hub diameter 154mm.

i think you are right about the first number as the number of wires x the number of times it is wound around the stator pole for the second number.

User avatar
Snickers   10 mW

10 mW
Posts: 21
Joined: Nov 22 2007 2:45pm

Re: high turn count 9C motor.

Post by Snickers » Aug 10 2009 10:32am

You have RH and FH motor for Rear Hub and Front Hub.
You have 154 and 205 version 154 is smaller in term of diameter and 205 is bigger. both have more or less the same torque.
You have 7x9, 6x10, 5x12, ...
9X7 would be 9 strands and 7 turns.
Chose depends of wheel diameter and torque, speed needed.

I have personnaly a FH 154 7x9

europa81   1 mW

1 mW
Posts: 16
Joined: Feb 15 2009 3:10pm
Location: Berlin, Germany

Re: high turn count 9C motor.

Post by europa81 » Aug 10 2009 1:36pm

Snickers is right: the first number is the number of strands run in parallel and the second number is the count of windings.

And the 154 is NOT (!) a geared motor. It hence allows for recuperation. I have been riding it happily for 2000 km now.

Picture attached.

.
154.jpg
154.jpg (72.22 KiB) Viewed 1575 times
Greetings

jag   10 kW

10 kW
Posts: 777
Joined: Feb 16 2009 12:12pm

Re: high turn count 9C motor.

Post by jag » Aug 14 2009 12:18pm

rkosiorek wrote:
anyone know where i might be able to find one of them high turn count 9Continents motors?
I understand the high turn motors were among the first to be brought to North America, but then replaced by the lower 7 and 6 turn models when people wanted more speed in a typical 36V setup. So the high turn models have been sold here. They are just not imported currently AFAIK.

If you are willing to take a used one, you could try a WTB ad on appropriate forums.

User avatar
Ypedal   100 GW

100 GW
Posts: 12524
Joined: Dec 27 2006 12:55pm
Location: Moncton NB, Canada
Contact:

Re: high turn count 9C motor.

Post by Ypedal » Aug 14 2009 3:28pm

I have access to them, but be ready for the shipping cost !! ( be sitting down when you ask !) if you want it fast ( air shipping ) ! :shock:
ES site status page:
http://www.ypedal.com/ES/ES.htm
----------------
http://www.ypedal.com

recumbent   100 kW

100 kW
Posts: 1041
Joined: Sep 07 2007 5:32pm
Location: Okanagan valley Canada

Re: high turn count 9C motor.

Post by recumbent » Aug 16 2009 4:17pm

I wonder if the "6" turn, 9C motors, which are best suited to 20" wheels, is similar to the Clyte 406 which is what i have on my 20" front wheel. Great power curve for 7,000 kms so far.

However, The 9C motors are larger in diameter, have more coils, and have slightly more torque over a longer power curve. I think The 9C motors may have better ride characteristics.

Wish i could try them side by side.
Ebike in use:
LWB Recumbent bike, Sram i-9 internal gears.
Power: 58V, 16 amp/hr, lipo batteries.
max speed: 52 km/h (30 mph),
max range: 40 km's, incl stop&go few times, minimal pedaling.
New build: Delta recumbent trike

BikeFanatic   1 kW

1 kW
Posts: 408
Joined: Nov 19 2011 10:58am
Location: Massachusetts

Re: high turn count 9C motor.

Post by BikeFanatic » Aug 16 2009 8:55pm

I have both the nine continents, the fast winding and the C lyte 406. I know the nine Continents runs 27.5 MPH max speed in a 26 inch mountain bike with 150 lb woman on it, I can compare the 406 tomorrow on same track if you like, both are with 20 amp controller at 48 volts ping. I know the 9C is faster, 406 max 25.5 MPH -9C has more torque feeling .

Post Reply