DD 9C 2810 - Cntrl Lyen 18Fet 4115 - Battery 38120HP & CADP

[Tommy L]

Pre 95.4v ride video


Tommy L sends.... \\m//

[Tommy L]

95.4v ride.....

Tommy L sends..... \\m//

[pwbset]

Dig the videos thanks for sharing. My 2810 should be here early next week. Plan on pumping 2kw+ for 15-20 minutes through it climbing 1,600ft to work at 72v30A. Will at least air cool drill if not oil bath. Can't wait to abuse this little motor.

[Tommy L]

Dig the videos thanks for sharing. My 2810 should be here early next week. Plan on pumping 2kw+ for 15-20 minutes through it climbing 1,600ft to work at 72v30A. Will at least air cool drill if not oil bath. Can't wait to abuse this little motor.

Curious if you picked the 2810 based on my vids. It's nice to have input to decide what motor/volts/amps required to do certain jobs.

If you do a build thread, please PM me. I very interested in your two choices of cooling and your results

Thank you for checking out my build...


Tommy L sends..... \\m//

[hjns]

Nice thread and nice vids, Tommy.

I like my 2810 very much. Used it for 2WD at 20S. Now adding a temp sens and replacing the wires to allow for 30S (126V HOC) with a Lyen MK2 12 FET 150V controller. See if it eats 10kW...

[pwbset]

Curious if you picked the 2810 based on my vids.

I've been building ebikes for about 5 years now. I chose the 2810 for this summer's commuting season strictly based on price... cheap! I was also tired of having a heavy Clyte 504 build that weighed like 90lbs. Trying to go light(er) this time around.

[Tommy L]

Nice thread and nice vids, Tommy.

I like my 2810 very much. Used it for 2WD at 20S. Now adding a temp sens and replacing the wires to allow for 30S (126V HOC) with a Lyen MK2 12 FET 150V controller. See if it eats 10kW...

Thank you!

This is exciting! You must PM me with the results!

Your 2wd setup is..... 1 or 2 controllers? not sure if 1 controller is possible?
I'm interested in hearing more. Was it more efficient running two 2810's over one 2810? I believe it would be, if your journey
has many starts and stops.

Tommy L sends...

[Tommy L]

Curious if you picked the 2810 based on my vids.

I've been building ebikes for about 5 years now. I chose the 2810 for this summer's commuting season strictly based on price... cheap! I was also tired of having a heavy Clyte 504 build that weighed like 90lbs. Trying to go light(er) this time around.

So sorry! After I asked..... I saw that you are 1MW

You have much experience and I appreciate your knowledge.

I did go with the 2810 for price/weight/other reviews and more learning for myself.

It's great to see people COOLING them with oil or air holes. I'm only running 2.5kw max on burst and at 55km 1 to 1.5kw. On 70F or 20C days the motor
is warm to the touch. I hate to see what the inside heat is like. I guess it's time to learn about cooling and temp sensors! lol

Tommy L sends.... \\m//

[Tommy L]

Just got back from another ride/workout. I like to pedal

23C or 73F Yes... when the air is warmer it is less dense! Hit 64kph/40mph ohhhhh yawwwwwhhhh!

Wind was 15kph/10mph (on my course
22wh/km
Top speed 64kph/40mph
Avg speed 48kph/30mph
Distance 13km/10miles
Pack start voltage 96v
Pack under 2500watt load 86v (3.072v per cell)
pack under 1000watt load 89v (3.179v per cell)

What also helped was I topped up the batteries. My 37v charger puts out 41.3 and my 36v nom split LiFePO4 should get 43.4v.
So I used my Venom hobby charger and topped up all the cells and got a whole 1-2v more! lol

I charge two 36v and one 12v and put them all in series for 96v

Tommy L sends... \\m//

[jkbrigman]

Just got back from another ride/workout. I like to pedal
23C or 73F Yes... when the air is warmer it is less dense! Hit 64kph/40mph ohhhhh yawwwwwhhhh!

Wind was 15kph/10mph (on my course
22wh/km
Top speed 64kph/40mph
Avg speed 48kph/30mph
Distance 13km/10miles
Pack start voltage 96v
Pack under 2500watt load 86v (3.072v per cell)
pack under 1000watt load 89v (3.179v per cell)

...

Tommy L sends... \\m//

Tommy - both I and Kinni420 have the 2810 in 26" wheels, getting pretty similar numbers to what you are reporting. The 2810 is nice at over 70v and awesome at over 90v. We're running 18S LiPo, I've experimented with 24S (100V HOC) and it's been fantastic, 40mph possible to maintain at WOT. I love how the motor can handle peaks over 2Kw and not get hot to the touch.

[Tommy L]

Tommy - both I and Kinni420 have the 2810 in 26" wheels, getting pretty similar numbers to what you are reporting. The 2810 is nice at over 70v and awesome at over 90v. We're running 18S LiPo, I've experimented with 24S (100V HOC) and it's been fantastic, 40mph possible to maintain at WOT. I love how the motor can handle peaks over 2Kw and not get hot to the touch.

This is awesome! Mine is warm to the touch, but not sure how hot the coils are getting. I'm thinking of doing the "OIL" cooling method that is
in one of the threads here.

Wondering if I'll purchase the LYEN 18fet 4115 86-132v (will handle up to 150v HOC) and run 40S for 146v HOC. I would like to get 75kph/47mph

Nice to see that you are keeping the wattage under control. I believe this motor will saturate at 3kw.

from 24S 81HOC jumping up to 28S 96HOC 38120HP Headway makes wheelie popping easier....lol

I think that 3Kw peaks on a bicycle is just pushing into the "NOT SAFE" for the weight/geometry of a bicycle although the speed feels comfortable.
So every time I up the voltage, I lower the max amps on my CA to keep my peaks around 2.5 to 3Kw.

If I move up to a HUBZILLA, then I will build a frame with swing arm and high quality triple tree(some call it triple clamp) front suspension fork.

I see your 13wh figures! Nice!

Take care... and enjoy! Grin Grin!
Tommy L sends....

[Ypedal]

I run my e-bmx with a 9C ( not a 2810 .. it's faster winding .. 9x7 ? not sure.. ).. on 24S lipo wich is 100v hot off the charger holds 95v for a while dipping into 90v at high loads of 50 amps.. so that's 5kw, she gets kinda hot( measured 55 celcius at end of ride ) .. some guys push WAY more than that into the 9C... the 2810 is a low rpm motor so it will not take high amps once it reaches a certain speed ... you are well within the safety zone at 3kw.

[Tommy L]

I run my e-bmx with a 9C ( not a 2810 .. it's faster winding .. 9x7 ? not sure.. ).. on 24S lipo wich is 100v hot off the charger holds 95v for a while dipping into 90v at high loads of 50 amps.. so that's 5kw, she gets kinda hot( measured 55 celcius at end of ride ) .. some guys push WAY more than that into the 9C... the 2810 is a low rpm motor so it will not take high amps once it reaches a certain speed ... you are well within the safety zone at 3kw.

Good evening YPEDAL!
This is great info ..... I've got an invoice from Lyen for a 18fet 4115 so i can run 40s Headway 146v HOC. I'm still learning and hoping that I can hold
between 1.5 to 3kw continuous at the 146v ....holding 124v and dipping to 120v and get into the 75 to 80 km zone for short burst. I've read that going
above 3kw would possibly saturate the coils and just go into heat. I do not want to learn by melting... lol Nice to read her on ES info info info! lol
Some reading is suggesting to stay with the 4110 fets which mean 100v max and to purchase faster winding motor to get my speed. What are your thoughts?
Because I can change my order with Lyen...

I'm very surprised at this Triple Tree(clamp) front fork on this Hooligan bike. This FS bike is stable at 64kph. You've seen my vids... I stick to the country
roads and they are fairly smooth with some small bumps. I keep wanting to build a Emotorcycle but I have a Honda VTX 1800C. So I'm trying to keep light, yet strong and still be smart Burst to 80kph will make this a good commuter for me. All country roads and 11km to work.

Have you tried the HS or HT?

Is that 55C external with a heat sensing laser or internal?

Tommy L sends.... \\m//

[jkbrigman]

I run my e-bmx with a 9C ( not a 2810 .. it's faster winding .. 9x7 ? not sure.. ).. on 24S lipo wich is 100v hot off the charger holds 95v for a while dipping into 90v at high loads of 50 amps.. so that's 5kw, she gets kinda hot( measured 55 celcius at end of ride ) .. some guys push WAY more than that into the 9C... the 2810 is a low rpm motor so it will not take high amps once it reaches a certain speed ... you are well within the safety zone at 3kw.

What controller are you able to run at 100v HOC? I've been experimenting with the el-cheapo 6 FET ebikes.ca but I'm afraid to keep it up, afraid I might burn out a 4110....thanks!

[hjns]

Your 2wd setup is..... 1 or 2 controllers? not sure if 1 controller is possible?
I'm interested in hearing more. Was it more efficient running two 2810's over one 2810? I believe it would be, if your journey
has many starts and stops.

Tommy L sends...

No, not possible with 1 controller, unless it is a dual controller in one casing.

I ran a 9C 2810 in front and a HT3525 in the rear. It is definitely NOT more efficient to run two motors instead of one. Think >30 Wh/km instead of 22 Wh/km for the same commute with the same driving behaviour. I don't care about individual motor efficiency, unless it is turning out more heat than power.

However, with hills, 2WD screams!! I run now only my HT3525 in the rear, and it gets very hot with the wheather better, higher ambient temps, and 126V 65A input on a 15-20% hill. With the 2WD, neither motor would be more than handwarm.

We are going to move to a more hilly area within the next month, so I may go back to 2WD, temp sensored, with dual Lyen 124115 controllers (30S 126V at 2x 65A or more). We will see.

If you go >3kW, make sure to install a Temp probe on the coils.

[Tommy L]

If you go >3kW, make sure to install a Temp probe on the coils.

Is there a good thread for that? Installing a temp probe.
Also, have you Oil Cooled? If so, is there a good thread for the 9C ?

Thank you!

Tommy L sends... \\m//

[hjns]

Just to let you know that I added a 10k thermistor ntc onto the windings of my 9C. The motor is still naked, to allow the DP420 and the high temp sealant to dry, and do some testing before closing it again. Once done, I will post in my own thread.

However, it is a real PITA to change the wires (and add two for the thermistor) going through the axle. My original intent was to add 2 wires for the thermistor and upgrade the phase wires. However, once opened, I did not dare remove the heatshrink within the axle from the motor side. I ended up using the same phase wires, and replace the hall wires with 28AWG motor coil wire for 1S motors. 7 of these I could bring next to the phase wires, using another wire as lead. Hopefully, I find my HT easier to mod. As mentioned, more info to follow.

[Tommy L]

Changing the Pack from 28S1P to 36S1P. Lyen 18Fet 4115 is here!
Going from 89.6v nom pack to 115.2v nom pack. Hot off the charger just over 1KW

At 80%DOD(737Wh) I should be able to travel at least 28km/18miles. But the higher speeds may change those figures.
I've tapped the pack at 4 points. 3 taps (38.4v nominal each tap) for 36v chargers and 1 tap for full 115.2v nominal pack voltage.
Also, 4S balance taps everywhere....lol.......to keep this pack from getting to far out of whack.
By my calculations, this pack should give 4kw of power with cells holding above 3.0v each.

Tommy L sends.... \\m//

[Tommy L]

I got my 18fet 4115 programmed last night and tried it out no load
88.9kph on 115v nom pack. Hoping to hit high 70's kph and looking forward
to having regen! Video to follow!


Tommy L sends..... \\m//

[Tommy L]

I'm at 115.2v nom 130v ish off the charger. Lyen's program allows regen voltage 55/110 60/120 and 75/150.
My charge voltage should be around 132v .... time to add 4 or 5s more so I can have regen! oh the things
we learn here on ES ....Happy and Sad moments simultaneously! lol

Just got a new front wheel (old one was not disc ready) and some hydraulic brakes. Yet another learning curve! lol

Any ideas about Regen or am I stuck with putting a pack together in the charge voltage range of the Lyen Program only?

Tommy L sends.... \\m//

[Tommy L]

Clamp brakes weren't cutting it! I went out yesterday and picked up a new rim, tire, tube, disc, and hydraulic system.
Juicy 3 with 185mm rotor.

Before/after pics




Now running at 115.2v nom pack.


Got to go change this for 4S more. I didn't know about the software in the Lyen 18Fet 4115
controller. 55/110v 60/120v and 75/150v are the Regen settings. My pack needs
about 132v to charge so the 60/120v setting is too low to feel regen and 75/150v would be
over volts to the pack. If I add 4 or 5 more in series I can adjust the software to the 75/150v regen

I hope it works! Any thoughts on the regen volts? Always something to learn here and it's so difficult
to search and find info at times!

\\m// Tommy L sends..... \\m//

[Tommy L]

I really wanted REGEN before this ride. I might reach over 80kph lol.

To accomplish regen to work with Lyen program I had to up my pack voltage to 40S of LiFePO4 (128v nom)
and set Lyen program to 75v (for 150v regen charge 3.75v per cell). High voltage controller with Lyen software
you have to keep in mind that you use half voltages for some settings and certain formulas for other settings.

It's one thing to see 40v show up on a CA and then 95v dc on CA is dangerous DC Voltage.... but when you see this:

And its in a back pack.... and you've had espresso.... heart is pounding! Man.....almost went to ORANGE here..... lol



Grabbing the GO PRO HERO 2 and off for the 132v ride! wooooooooot! Video to follow!

Tommy L sends..... \\m//

[Tommy L]

As promised...... here with the GoPro Hero2 Vid!

128 Volt Grinnnnnnnnnnn

70.7kph max

Come for a ride with me....... Tommy L sends.... \\m//

[Ypedal]

looks like it scoots right along.. !!!

I dont see a massive torque arm on that thing, i highly recommend looking into that sooner than later, even if the dropouts are thick steel...

40s headcase cells in a backpack.. man.. that's HUGE and HEAVY... how hot are the cells after that run ?

[Tommy L]

looks like it scoots right along.. !!!

I dont see a massive torque arm on that thing, i highly recommend looking into that sooner than later, even if the dropouts are thick steel...

40s headcase cells in a backpack.. man.. that's HUGE and HEAVY... how hot are the cells after that run ?

I have the Doctor Bass Torque arms, but not installed yet. Big thick tight steel drop outs? Yes! But I should do some extras
Although I've pulled 4kw from the 8ah cell (4C) in brief draws, I keep it down to an average of 2C (2kw) or less. 26lbs of LiFePO4

First thing I noticed was the motor spins up easily to 60kph, then it's probably SATURATED and only watts go up with very little
speed increase. So I would say that the efficiency drops after 55kph and steep drop after 65kph. I've got the CA set to 30amps
and on heavy draw the volts drop down to 120v (so 3.0v per cell) and 124/125volts at 1800watts (3.1) 1.75C.
So the cells didn't get warm. I might be a high volt freak.... lol but I keep the amps down. I always balance between
voltage/amperage and work in WATTS to be kind to the controller/motor. I always base my max draw on "C" rating
I've learned much here on ES As I increase my volts, I drop my amps (except for this test run) I wanted about 4kw on
tap in case the motor needed it to get more rpm's, again.....I believe it hit a wall of Saturation!

Not much use in throwing more than 2-3kw into a 9C2810. It holds a fairly steep incline at 60kph with near 4kw at the high voltage.
wh/km went up by near 35% more vise the 89.6v nom 28S pack.

The 9C2810 is a nice 50-60kph/30-40mph motor running 90v nom 30amp max (again 2-3kw). Seems to have some speed and
efficiency sweet spot. hmmmmmmmm just like the ebike.ca simulator says! lol
And what did this cost me? ........ A whole lot of grin!

Tommy L sends.... \\m//