Search found 1347 matches

by brumbrum
Mar 07 2019 3:59am
Forum: EBike Non-hub Motor Drives
Topic: LMX 64 : Freeride Ebike with dual drive and torque sensor
Replies: 246
Views: 32392

Re: LMX 64 : Freeride Ebike with dual drive and torque sensor

It's so amazing to see a couple of young guys doing pretty much everything in house and not having to rely on the far east for anything. True Endless Sphere guru's.
by brumbrum
Mar 04 2019 2:16am
Forum: EBike Build Threads
Topic: Andrew's LMX 161 Chain-drive massacre Build Log
Replies: 80
Views: 10202

Re: Andrew's LMX 161 Chain-drive massacre Build Log

brabantbike wrote:
Mar 03 2019 11:43am
Wow great bike!

What do these bikes cost in parts approximately?
If buying everything, startng with nothing probably over £4k gbp
by brumbrum
Mar 02 2019 2:09pm
Forum: EBike Technical
Topic: Adaptto Mini-E/Max-E Owner's Thread
Replies: 5176
Views: 635477

Re: Adaptto Mini-E/Max-E Owner's Thread

Hi everyone. I’ve just been balancing the battery pack on my bike with a Max-E through the BMS. Was fine an hour ago, then went to check on it and everything is off and won’t switch on again. Has anyone else had this happen? Did you resolve it? Don’t really know what to do next. Thanks. I had this ...
by brumbrum
Jan 06 2019 4:11am
Forum: EBike General Discussion
Topic: 200a Breaker Switch.
Replies: 12
Views: 877

Re: 200a Breaker Switch.

Any ideas guys on a shop I can find me a 200a breaker for my build please? Already have a 125a but my battery build should be good for 200a burst so want all I can get from it. Any help would be good help😁 Try out the 125a breaker first. You will probably find it will be ok. If you were drawing a c...
by brumbrum
Jan 04 2019 3:21am
Forum: EBike General Discussion
Topic: Need help picking ebike for 60-something Dad
Replies: 9
Views: 877

Re: Need help picking ebike for 60-something Dad

The specialized turbo levo is the must have emtb at the moment for sure. The new 2019 model has had a big overhaul and redesign from previous versions, so it maybe worth paying a little extra and getting this model rather than the 2018. Just buy the cheapest version and upgrade later if ever needed ...
by brumbrum
Dec 29 2018 1:16pm
Forum: EBike Build Threads
Topic: Andrew's LMX 161 Chain-drive massacre Build Log
Replies: 80
Views: 10202

Re: Andrew's LMX 161 Chain-drive massacre Build Log

Regnardin wrote:
Dec 29 2018 1:08pm
I have already contacted the support but no news! :?
It reminds me of the ignition wire you get on Lyen/infineon controllers.
by brumbrum
Dec 28 2018 6:35am
Forum: EBike Build Threads
Topic: Andrew's LMX 161 Chain-drive massacre Build Log
Replies: 80
Views: 10202

Re: Andrew's LMX 161 Chain-drive massacre Build Log

maitilupas wrote:
Dec 28 2018 3:39am
is that a circuit breaker and a shunt? in my shunt i use the negative not the positive and than connect the positive iginition ( 7 in case is kelly) also to the shunt
Maybe it is? I thought it was a circuit breaker with a pre-charge resistor built in.
by brumbrum
Dec 28 2018 2:47am
Forum: EBike Build Threads
Topic: Andrew's LMX 161 Chain-drive massacre Build Log
Replies: 80
Views: 10202

Re: Andrew's LMX 161 Chain-drive massacre Build Log

Hello to you, I wanted to follow this pattern but unfortunately the result is not conclusive. Can you help me using my schema? I would be very grateful to you! http://image.noelshack.com/fichiers/2018/52/4/1545937128-wiring.png Have you tried measuring voltage across the various parts of your circu...
by brumbrum
Dec 19 2018 2:57am
Forum: EBike Non-hub Motor Drives
Topic: LMX 64 : Freeride Ebike with dual drive and torque sensor
Replies: 246
Views: 32392

Re: LMX 64 : Freeride Ebike with dual drive and torque sensor

Well done guys. The lower the noise - the more the customer.., simples! Less noise on chain drive systems is the holy grail in RnD.

Thanks for the updates :D
by brumbrum
Dec 12 2018 3:08pm
Forum: EBike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5396
Views: 604591

Re: Sur-Ron - New Mid drive Bike

Chainsaw oil :wink:
by brumbrum
Dec 08 2018 3:15pm
Forum: EBike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5396
Views: 604591

Re: Sur-Ron - New Mid drive Bike

Qulbix Q76R looks much better than Sur-Ron :D :D Looks like it costs nearly twice as much as a Sur-Ron (177%), has a smaller capacity battery, and a hub motor. Not to mention the Sur-Ron's forged frame looks infinitely more professional. I doubt that. It was self built. Quilbix frames are excellent...
by brumbrum
Dec 08 2018 12:25pm
Forum: Battery Technology
Topic: Tested my Panasonic cells (Opus), unsure of results
Replies: 8
Views: 668

Re: Tested my Panasonic cells (Opus), unsure of results

The cells need to be warm to get the best out of them. I am pretty sure that internal resistance will be a lot higher in cold temp. I found that my samsung 30Q cells give much less capacity when cold.

Also if the cells are new, i would cycle rhem a few rimes before testing
by brumbrum
Dec 05 2018 2:45am
Forum: EBike General Discussion
Topic: Qulbix Q140MD - any experience?
Replies: 196
Views: 20167

Re: Qulbix Q140MD - any experience?

You have chosen well. Great bike. Solid parts. Excellent set-up. 8)
by brumbrum
Nov 29 2018 3:51pm
Forum: EBike General Discussion
Topic: Qulbix Q140MD - any experience?
Replies: 196
Views: 20167

Re: Qulbix Q140MD - any experience?

Glad to hear the Q76 frame has held up well! I looked at the Vortex too, but it just looks too much like a motocross bike to be able to ride it without any hassle here I think. Performance should be similar though, and I'm hoping the Q140MD will feel natural to pedal on rather than relying 100% on ...
by brumbrum
Nov 25 2018 3:58pm
Forum: EBike General Discussion
Topic: Battery Fire.
Replies: 39
Views: 3243

Re: Battery Fire.

Its very weird why the video footage is edited at 3.14. You see a charging cable at 3.13 and then there's a little blip and it's gone. Why would they want to edit out the fact it was charging?
by brumbrum
Nov 23 2018 11:35am
Forum: Motor Technology
Topic: wich choice motor qs273
Replies: 5
Views: 784

Re: wich choice motor qs273

The lower the turn count the higher the rpm. The motor will spin more times per volt
by brumbrum
Nov 14 2018 2:25am
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 1541
Views: 167607

Re: Nucular electronics - complete kit for ev! [beta]

Give the guy a chance, Haah! The solder has barely had time to cool on the very first board. Ha! TAKE MY MONEY NOW!!! OK...no not really...this controller needs some vetting yet. But I am quite interested!!! My hope is it can do 150 volts. I'm willing to sacrifice some of those crazy 500 phase amps...
by brumbrum
Nov 13 2018 4:16pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 1541
Views: 167607

Re: Nucular electronics - complete kit for ev! [beta]

Give the guy a chance, Haah! The solder has barely had time to cool on the very first board.

Some lovely torque. How much sag you getting on your pack. Just wondering what it takes to get to 60kph
by brumbrum
Nov 12 2018 12:59pm
Forum: Battery Technology
Topic: Best battery Deals on 11 11 Chinese sale!?
Replies: 11
Views: 1478

Re: Best battery Deals on 11 11 Chinese sale!?

no one? .... considering people always looking for cheap batteries and deals on here i thought there would be a little more action... these don't look bad https://www.aliexpress.com/item/100-Original-LiitoKala-Lii-35A-3-7V-3500mAh-NCR18650GA-10A-Discharging-Rechargeable-Batteries-For-Sanyo/32823361...
by brumbrum
Nov 05 2018 2:42am
Forum: Battery Technology
Topic: Samsung 25R Internal Resistance
Replies: 19
Views: 1750

Re: Samsung 25R Internal Resistance

I have few new cells from nkon here. Some after few cycles. Samsug 25R shows 11,5 miliohms AC and 18 miliohms DC at 4,08 V. Sanyo GA shows 20,4 (24 new) miliohms AC and 35 miliohms DC at 4,08 V. Temperature during measurement cca 25 C Sanyo GA cells in my one year old battery 10s5p are about 38 mil...
by brumbrum
Nov 02 2018 4:52am
Forum: Battery Technology
Topic: Samsung 25R Internal Resistance
Replies: 19
Views: 1750

Re: Samsung 25R Internal Resistance

If I remember correctly, it takes a few cycles for a brand new cell to achieve it's best IR (and capacity), so that might be why you could see a used cell with lower IR than a new cell. Have to agree. I was first dissapointed when building a 20s 27ah samsung 30Q pack. First 3 cycles gave higher sag...
by brumbrum
Oct 28 2018 2:11am
Forum: EBike Non-hub Motor Drives
Topic: LMX P2 : Freeride trials motorcycle frame development
Replies: 999
Views: 229403

Re: LMX P2 : Freeride trials motorcycle frame development

#219 chain should be plenty strong enough :thumb:
by brumbrum
Oct 26 2018 1:32am
Forum: EBike Non-hub Motor Drives
Topic: LMX P2 : Freeride trials motorcycle frame development
Replies: 999
Views: 229403

Re: LMX P2 : Freeride trials motorcycle frame development

Adam has ordered in some 14t sprockets for the lmx motor. I will be trying this soon with a 100t rear sprocket from eBay. This will give a slightly lower gearing ratio of approx 7.2:1 instead of the original 7.8:1 With the idea of reducing some noise from the original 12t front sprocket. The lmx161...
by brumbrum
Oct 25 2018 1:20pm
Forum: EBike General Discussion
Topic: Help magnets in hub motor
Replies: 21
Views: 2302

Re: Help magnets in hub motor

Hi all, while I was replacing the hall effect sensors I damaged few magnets inside the stator. couldn't find an alternative! I believe they about 2.2 mm thick * 13.9mm wide *28mm long. Got N50 30mm x 10mm x 2mm from aliexpress that didn't work it's very weak compared with original one. any suggesti...