Search found 1685 matches

by sn0wchyld
Jan 23 2020 6:20am
Forum: Motor Technology
Topic: Revolt RV-series motor review and comparisons
Replies: 242
Views: 25247

Re: Revolt RV-160-SH update

I have the RV-160-SH running on a 24 fet Nucular controller now. After a bit of set up, the motor is running great. At 82v I am seeing 6 battery amps and 10 phase amps under no load. It's not the best for efficiency as that's 820 watts just to run the motor. I'm sure with 3X the original copper cro...
by sn0wchyld
Jan 22 2020 6:18pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4387
Views: 411500

Re: Sur-Ron - New Mid drive Bike

Lol someone needs to tell this guy to disconnect the battery :P

and thats on the kickstarter!

Image
by sn0wchyld
Jan 15 2020 2:43am
Forum: Motor Technology
Topic: Roman Kostrygin - Sur-Ron 16kw outrunner
Replies: 24
Views: 3677

Re: Sur-Ron 16kw outrunner

links broken EG - states duplicate vid
by sn0wchyld
Jan 14 2020 5:09pm
Forum: Motor Technology
Topic: Roman Kostrygin - Sur-Ron 16kw outrunner
Replies: 24
Views: 3677

Re: Sur-Ron 16kw outrunner

With phase to phase resistance, no load current at two voltage levels, KV and motor weight the motor can be characterised and performance accurately predicted at virtually any input conditions. Extensive batteries of tests aren't strictly needed, but feel free to do then anyway Easiest way to measu...
by sn0wchyld
Jan 14 2020 12:17am
Forum: Motor Technology
Topic: Electric motors in the 100-500€ range and buying them in Europe
Replies: 14
Views: 911

Re: Electric motors in the 100-500€ range and buying them in Europe

john61ct, maybe this will be of help? https://youtu.be/SrPHQh-M3pM?t=66 Thank you very much for your suggestions, sn0wchyld! I couldn't find any options to buy separate motors from Sur-ron, unfortunately. But the other manufacturers have some interesting products... I spent the last few days resear...
by sn0wchyld
Jan 11 2020 10:04pm
Forum: Battery Technology
Topic: Batteries in series - will both BMS protect them from over-discharging?
Replies: 12
Views: 767

Re: Batteries in series - will both BMS protect them from over-discharging?

unfortnatly will need far more info than that - the issue lies in how the BMS protects the batteries - this is done (99% of the time) with a solid state switch called a MOSFET. These mosfets have a certain voltage rating that when exceeded, cause them to fail (often with a lot of smoke). unless the ...
by sn0wchyld
Jan 11 2020 9:53pm
Forum: General Discussion
Topic: The keto thread
Replies: 111
Views: 9784

Re: The keto thread

OMG, the crap that mainstream media continues to pull is outrageous. The doctor interviewed is a member of an organization that's funded by barilla pasta, several vegan propaganda groups, vegan food producers, etc. The article is written in a way that it appears balanced, using a couple solid facts...
by sn0wchyld
Jan 11 2020 9:51pm
Forum: General Discussion
Topic: The keto thread
Replies: 111
Views: 9784

Re: The keto thread

Me and my wife cheated at an indian restaurant, and it felt worse than any other cheat we've ever done. I realized that the food was very similar to my holier than thou vegetarian diet, since i'd based my diet then around this idealistic view of Indian vegetarianism, like many clueless westerners a...
by sn0wchyld
Jan 11 2020 9:24pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4387
Views: 411500

Re: Sur-Ron - New Mid drive Bike

average. not continue. with 100v and stock gearing the surron will hit 80+ mph. if you design any EV, yes. go with very high voltage but also design the motor for it. high voltage on the surron motor brings efficiency down (up)to ~60% (if you ride it normal) (justins motor calculator show that pret...
by sn0wchyld
Jan 11 2020 6:52pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4387
Views: 411500

Re: Sur-Ron - New Mid drive Bike

not really. 24s/100v is not the best idea. for hot rod, all time running @ 60mph maybe. but if your avg speed is more 30mph you run all time less efficient as the 16s/18s package. i think 18s would be the sweet spot and 20s acceptable. but i didnt expect something brillant from a guy who ask the su...
by sn0wchyld
Jan 09 2020 11:01pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4387
Views: 411500

Re: Sur-Ron - New Mid drive Bike

I readjusted to a looser tension,just a little give in the chain now.Its a little cooler and less noisy . has the chain been washed at any point? particularly with any solvents? also might be worth checking for any stiff links, particularly if a chain breaker has been used. Also check that the tens...
by sn0wchyld
Jan 09 2020 4:32pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4387
Views: 411500

Re: Sur-Ron - New Mid drive Bike

Primary chain drive kit:Anyone else running this kit?I put o ring chain for the primary drive kit and it runs kinda hot,about 135-140f ( can’t hold on to it) after about 5 mintues use.Is this amount of chain heat normal? No but that does sound way too hot... how tight is the chain? it should have j...
by sn0wchyld
Jan 08 2020 5:58pm
Forum: Motor Technology
Topic: Electric motors in the 100-500€ range and buying them in Europe
Replies: 14
Views: 911

Re: Electric motors in the 100-500€ range and buying them in Europe

Motenergy make some really good motors, if its within your budget (with a decent controller) that'd be a monster on a gocart... Golden motors make some knockoffs of the motenergy - a bit cheaper, and lower quality as a result, but still 'good enough' for a lot of applications. The 3kw motor they off...
by sn0wchyld
Jan 07 2020 5:16pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4387
Views: 411500

Re: Sur-Ron - New Mid drive Bike

anyone upgrading the surron with nucular controller: get a domino throttle. stock throttle works also but now i could compare both surrons with a nuc and the stock throttle is not that smooth as the nuc/domino package. to be honest. worlds difference in smoothness. I'll be trying mine with a finger...
by sn0wchyld
Jan 07 2020 4:36am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4387
Views: 411500

Re: Sur-Ron - New Mid drive Bike

apologies if this has been answered, but cant find it trawling most the 170+ pages... is there any confirmation on the bikes pin-outs? namely from the X controller? im specifically interested in the 3 pin triangle connector... can only find the 'other end' of the large white, little red stripe cable...
by sn0wchyld
Jan 07 2020 2:46am
Forum: E-Scooter and Motorcycle General Discussion
Topic: help with surron and moving to EU (France)
Replies: 5
Views: 351

Re: help with surron and moving to EU (France)

Having trouble with this one - I currently have a surron registered in AUS, ie full street legal kit. From what I can tell the equivilant in france/EU is the l1E category, and where EU surrons sit, but finding out specific info on if its possible to bring my bike over and what (if any) changes/regi...
by sn0wchyld
Jan 06 2020 9:49pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: help with surron and moving to EU (France)
Replies: 5
Views: 351

help with surron and moving to EU (France)

Having trouble with this one - I currently have a surron registered in AUS, ie full street legal kit. From what I can tell the equivilant in france/EU is the l1E category, and where EU surrons sit, but finding out specific info on if its possible to bring my bike over and what (if any) changes/regis...
by sn0wchyld
Jan 03 2020 8:16pm
Forum: Motor Technology
Topic: Homopolar Switched Reluctance Motor
Replies: 13
Views: 970

Re: Homopolar Switched Reluctance Motor

Taking the novel aspect of the construction as a given, im not seeing a huge benefit here (though I have to state I'm not a motor expert so I could easily be missing the forest for the trees). One HUGE benefit i see is 0 drag when not powered (applies to SR and induction motors in general). With th...
by sn0wchyld
Jan 02 2020 5:06pm
Forum: Motor Technology
Topic: Homopolar Switched Reluctance Motor
Replies: 13
Views: 970

Re: Homopolar Switched Reluctance Motor

Not sure what you mean by "actual article". I linked the full scientific paper discussing this motor with all the info included. Clicking your link brings up a blank page for me. But it's definitely not an induction motor, it's a switched reluctance motor (says so right in the paper's title). As fo...
by sn0wchyld
Dec 29 2019 4:35am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 4387
Views: 411500

Re: Sur-Ron - New Mid drive Bike

Just came across this on Youtube, someone copied my design exactly. Luna is so creative. Eric thinks he is punishing me by ripping off all my sprocket designs including all the Bafang sprockets except for one which he paid for. The others he copied exactly. I wanted to be a part of the Sur-ron sale...
by sn0wchyld
Dec 14 2019 9:36pm
Forum: Motor Technology
Topic: Roman Kostrygin - Sur-Ron 16kw outrunner
Replies: 24
Views: 3677

Re: Sur-Ron 16kw outrunner

Roman is a nice guy! I really like him. He appears to be completely honest and 100% forthcoming with any information I ask for. His one goal IMHO is to make a great motor. I think he takes pride in doing good work and not cutting corners. My sister lives in Moscow...about a 30 minute train ride fro...
by sn0wchyld
Dec 14 2019 7:26am
Forum: Motor Technology
Topic: Good value for money 10-15kW brushless
Replies: 17
Views: 1135

Re: Good value for money 10-15kW brushless

If money is no problem here are top-end motors https://hacker-industrial-solutions.com/ for the q150 its arround 2000€ without tx :shock: That's way too much. I know that some electric paramotor manufacters use European brushless motors such as Paracell, Geiger, etc... they are probably good but no...
by sn0wchyld
Dec 12 2019 8:06pm
Forum: E-Bike Build Threads / Photos & Video
Topic: E-S Stealth Electric Bike Owners
Replies: 16789
Views: 1768538

Re: E-S Stealth Electric Bike Owners

What's the easiest way to replace the rivet nuts on battery compartment? Would a small dab of J-B weld work, to stop them from spinning. Also need a few button head bolts.. I know they are M6 but are they fine threaded and what length to order? st35326... That Excel rim setup looks impressive. That...
by sn0wchyld
Dec 12 2019 4:12pm
Forum: Motor Technology
Topic: Good value for money 10-15kW brushless
Replies: 17
Views: 1135

Re: Good value for money 10-15kW brushless

RE your 3000rpm limit - a good modern controller will allow you to set such a limit electronically... so you can safely use a motor that may well spin well over your desired max. main reason to not go too far over though is that a higher kv is inversely proportional to the torque per amp... ie doubl...
by sn0wchyld
Dec 12 2019 7:27am
Forum: Battery Technology
Topic: Can heating up battery give longer distance?
Replies: 24
Views: 1979

Re: Can heating up battery give longer distance?

As others have already mentioned, cooler temps reduce battery performance. I've done some tests on batteries for lights that indicated the energy used to heat the pack (if well insulated, so most the heat goes to the pack and not the environment) would be of net benefit (more energy available from ...