Search found 1757 matches

by sn0wchyld
Sep 11 2020 7:23am
Forum: E-Bike Non-hub Motor Drives
Topic: SURRON LB: RESEARCH & DEVELOPEMENT
Replies: 235
Views: 32816

Re: SURRON LB: RESEARCH & DEVELOPEMENT

Wow. So I'm a little late to the party with all the stuff I wanted to do on with Surron but eh...that's life. So I ended up finishing the full CAD model this spring. Here's a glimpse on my GC portfolio. The full file package is the COMPLETE bike, even connectors :) 500+ hours of work. Blood sweat a...
by sn0wchyld
Aug 08 2020 5:23am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

Highest I could get the motor was 72C-74C. It mostly stayed around 65C-70C. This is with 88F outside air. This is also using 90 amps x battery voltage with a Nuclear 24 fet controller. I checked the case temp with an infared thermometer, when the temp was 65C inside the motor measured by the temp p...
by sn0wchyld
Aug 08 2020 5:21am
Forum: Motor Technology
Topic: Surron Motor tuning with datalogs! FOC experts needed
Replies: 11
Views: 636

Re: Surron Motor tuning with datalogs! FOC experts needed

I realised I never posted an update here - vasiliy released new firmware based on mine and others feedback which completely resolved the non linear behaviour and now this thing RIPS. Still on 16s stock battery with a parallel booster pack from old 30qs, now hits 16.2kw on a daily basis. Power does ...
by sn0wchyld
Aug 08 2020 5:21am
Forum: Motor Technology
Topic: Surron Motor tuning with datalogs! FOC experts needed
Replies: 11
Views: 636

Re: Surron Motor tuning with datalogs! FOC experts needed

I realised I never posted an update here - vasiliy released new firmware based on mine and others feedback which completely resolved the non linear behaviour and now this thing RIPS. Still on 16s stock battery with a parallel booster pack from old 30qs, now hits 16.2kw on a daily basis. Power does ...
by sn0wchyld
Aug 01 2020 9:19pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

Finally rode my bike with the new KTY 84 temp probe. Highest I could get the motor was 72C-74C. It mostly stayed around 65C-70C. This is with 88F outside air. This is also using 90 amps x battery voltage with a Nuclear 24 fet controller. I checked the case temp with an infared thermometer, when the...
by sn0wchyld
Jul 22 2020 10:00pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

The 19x2.75" sr241 is typically 3.2" wide on the 1.4" sur-ron rim. I was thinking that the 2.75 would fit the front no issue? Only reason is thought that was I see a few vids on people changing to the 241 and using that on the front with no issue. (Maybe I was mistaken) :? I dont know much about ti...
by sn0wchyld
Jul 20 2020 4:36am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

road.JPG
road.JPG (330.57 KiB) Viewed 1218 times
on some local trails :P

steep enough that even the surron with a nuc 24f and 400 phA still struggles :D
by sn0wchyld
Jul 13 2020 6:28am
Forum: E-Vehicles General Discussion
Topic: Article in The Australian
Replies: 11
Views: 607

Re: Article in The Australian

https://www.theaustralian.com.au/nation/push-to-charge-ev-drivers-for-road-use/news-story/42359e970afcb369629414590ececda0 Paywalled, so only Beastie is likely to have a subscription. shitrag.JPG Yours truly and his Ioniq pictured for the story. Frustratingly, I was totally misquoted on the fuel ex...
by sn0wchyld
Jun 29 2020 11:47pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

I'm working on the ultimate sur-ron lighting for night riding in the woods and parks. This will be ridiculously bright and is totally not needed. You will blind everyone who dares to look at your bike. You will have diminishing returns as your eyes will adapt to the high brightness. You will be abl...
by sn0wchyld
Jun 25 2020 8:36pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

great mechanical skills but electric/battery wise its a bit weird. your ductape battery is 20s12p... 240cells only. dont know where you get these cells. but those stickers were used on refurbished, used or just fake cells. VTC6 has nominal voltage 3.6v not 3.7v.(have you measured iR of these cells ...
by sn0wchyld
Jun 25 2020 7:19pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

Making our own Storm Bee but with better performance and lower price. 4kW motor that needs no reduction gears or jack shaft. 60v 45ah 450amps Sony vtc6 cells that fits in the bike under the lid when you take out some plastics and the bracket for the controller. 80 more cells than the stock battery ...
by sn0wchyld
Jun 15 2020 10:37pm
Forum: E-Bike General Discussion
Topic: Boxxbike Valkyrie : 12kw crank concentric mid drive with left hand motor drive
Replies: 30
Views: 2356

Re: Boxxbike Valkyrie : 12kw mid drive with pedals and left hand motor drive

Its a nice looking bicycle, even if I had the money and wanting to buy a store bought ebike, I'd just go with one of the major brands, and be limited to 750W. Too bad there wasnt after-market upgrades to stuff a more powerful motor in the housing. Thats the redeeming quality of the Boxxbike, the po...
by sn0wchyld
Jun 09 2020 11:45pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

When you talk about 95 amps vs 120 amps. Are you able to use 120 amps on some sur-ron batteries without cutting the BMS wires? I only tried my bike up to 90 amps because I read most people had battery cut off at around 93 amps. Stock battery. I have had it cut out once when the battery was at ~30%,...
by sn0wchyld
May 29 2020 6:45pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

Why would anyone want to pull 120A when the cells can handle a maximum of 10A and also the voltage sag is so high that it does not really get you any advantages in total amount of power. Old: https://endless-sphere.com/forums/viewtopic.php?p=1358016#p1358016 New: https://endless-sphere.com/forums/v...
by sn0wchyld
May 25 2020 9:16pm
Forum: E-Bike Non-hub Motor Drives
Topic: How good is Cyclone 4kw coaxial suspension bike?
Replies: 240
Views: 35174

Re: How good is Cyclone 4kw coaxial suspension bike?

It is an expensive risk to take though. Without seeing the freewheel mechanism inside the gearbox I cannot estimate if it's something I can pull off. (I have a TIG welder and occasional access to a lathe) There must be someone who has pictures of the guts of this thing. I kind of lost track of the ...
by sn0wchyld
May 23 2020 6:23pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

How are you getting 440 phase amps with stock battery? I only get about 320 and my maximum ever was 340. Mostly everyone else with the 24 fet gets about 300-320 max phase amps. What is FW 5.0 you can pull slightly more than 120A from the stock battery, or about 7kw. that'll get you to peaks around ...
by sn0wchyld
May 22 2020 9:31pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

Did some testing with the Vesc 75/300 on my streetlegal Version. Works fine with 14S 16ah Lipos (will be 32ah when finished) at the moment although the Vesc can handle 16S. Regen is now possible and because of FOC the motor is more quiet. App showed me 8,5kw peak at 300phaseamps. Not sure if these ...
by sn0wchyld
May 20 2020 6:06pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

The 1.6x21" Impact rim only weighs 220grams more than your 19" :P I gotta say too running a 26'' on the front of mine does make it 'feel' better for the most part... bars do want to 'flop over' at low speeds/rolling over small stuff but otherwise bike is more comefortable to ride and feels more poi...
by sn0wchyld
May 19 2020 2:35am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

Orlov got his hands on a nice looking e-moto a few weeks ago.. https://www.youtube.com/watch?v=_mhMqbLZ8zM seems like a very fair review. Gotta say, the suspension on the surron does leave something to be desired. does well enough but the front end is already sticking somewhat, and never feels quit...
by sn0wchyld
May 18 2020 9:52pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

I'm bummed that my KT84 temp prove is bad in my motor because I can't monitor the temps. It will be interesting to see just how hot this motor gets internally with the nuclear controller. Temperature was such an issue with hub motor bikes and so far has not been an issue with the sur-ron, but that ...
by sn0wchyld
May 18 2020 6:04pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

KTM E-XC is heavy at 245lbs. I have a Zero FX but like the Sur-Ron much better on tight single track trails because of the light weight, power isn't everything. And I've had KTM's, 360 2 stroke and 640 ADV. Better suspension and more power than the FX but electric wins for me. A new entry is the Ub...
by sn0wchyld
May 13 2020 9:05am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5155
Views: 550723

Re: Sur-Ron - New Mid drive Bike

Got my new X Lightbee in. Its a bit better than the first generation. Put some trials tires on and got Motomoto's 55T sprocket and chain on. Thanks Kim for cutting the chain to length. Haven't ridden it yet, maybe this weekend. Wzup Rix! Missed this small bee too much? Have not posted it here but: ...
by sn0wchyld
Apr 23 2020 1:31am
Forum: Motor Technology
Topic: Roman Kostrygin - Sur-Ron 16kw outrunner
Replies: 66
Views: 8912

Re: Roman Kostrygin - Sur-Ron 16kw outrunner

1. I'd also like to know why a larger rear sprocket somehow increases the forces on the motor/motor mounts. The motor has an output power/torque... that is the source of forces in the system... a larger / smaller sprocket has no effect on these forces on the motor only on parts 'downstream' of the ...
by sn0wchyld
Apr 22 2020 9:11pm
Forum: Motor Technology
Topic: Roman Kostrygin - Sur-Ron 16kw outrunner
Replies: 66
Views: 8912

Re: Roman Kostrygin - Sur-Ron 16kw outrunner

9F4F312E-8192-44B6-8C6F-1931649D415E (1).jpeg
9F4F312E-8192-44B6-8C6F-1931649D415E (1).jpeg (224.8 KiB) Viewed 412 times
also just noticed that the cutouts are not even around the axle? curious as to why this is and how balancing is done?
by sn0wchyld
Apr 22 2020 8:04pm
Forum: Motor Technology
Topic: Roman Kostrygin - Sur-Ron 16kw outrunner
Replies: 66
Views: 8912

Re: Roman Kostrygin - Sur-Ron 16kw outrunner

Bryan Ratcliffe has just released a dirt ebike podcast https://podcasts.apple.com/ru/podcast/dirt-ebike/id1488285332#episodeGuid=Buzzsprout-3453370 with me talking about the SurRonShop in general and clearing out the situation with our race motor that recently happened. Here is an important text cu...