Search found 596 matches

by DogDipstick
Jun 02 2020 1:17am
Forum: E-Bike General Discussion
Topic: Flux weakening and a qs205
Replies: 23
Views: 288

Re: Flux weakening and a qs205

Just so there is no confusion, there is no such thing as loaded Kv . Kv is the rotational speed / back EMF. By definition Yes certainly. Please excuse my ignorance as a layman with a lot of these terms. The other option being a higher voltage on the lower KV rated hub. I believe there are definitel...
by DogDipstick
Jun 01 2020 8:36pm
Forum: E-Bike General Discussion
Topic: Flux weakening and a qs205
Replies: 23
Views: 288

Re: Flux weakening and a qs205

So, comparison of QS205 50H V3, 5T vs 4T. That simulator is priceless in knowing how and what ya gonna get. I think. Yeah I did just about the same exact calc but with 100v. Looking at the part throttle areas vs efficiency and consumption, get interesting between the two. Like the speeds you get to...
by DogDipstick
Jun 01 2020 8:11pm
Forum: E-Bike General Discussion
Topic: Flux weakening and a qs205
Replies: 23
Views: 288

Re: Flux weakening and a qs205

I ride the the h50v3 11.39kv in 24’’ wheel with 3’’ tire. Feed it 25+ kw acceleration bursts with 24s RC lipo. I just bought the same thing. The 11.39kv in 24’’ wheel with 3’’ tire....and I plan 300A 24s. Dont know bout the cells I plan to use yet. What I have.. or something new. I might go 30s jus...
by DogDipstick
Jun 01 2020 12:20pm
Forum: Battery Technology
Topic: Main Wires Fuse Protection
Replies: 12
Views: 222

Re: Main Wires Fuse Protection

I understand My question is, when used on the battery's main wire, if using a BMS that stops at the max current of the cells, then what is the remaining job left for the fuse? only for physical accidents and short circuits? Question is, how much current flows when sticking the positive and negative...
by DogDipstick
Jun 01 2020 8:05am
Forum: E-Bike General Discussion
Topic: Flux weakening and a qs205
Replies: 23
Views: 288

Re: Flux weakening and a qs205

Cannot decide what Kv I want still. lol. Are u considering a qs205? Would you happen to know how to measure a motors Kv? Yes. I am buying two or more.. Just cannot decide what to run them on, or the turn count yet. The 5T is 9Kv, very similar Kv to the 35H 205hub on my bike now. (8.56Kv). Good tq o...
by DogDipstick
May 31 2020 10:24pm
Forum: E-Bike General Discussion
Topic: Flux weakening and a qs205
Replies: 23
Views: 288

Re: Flux weakening and a qs205

Important information
Safety Information

When it's 130 ℃ inside of motor (in 30s), the current should be limited 50%. When it's 150 ℃, the controller shut down. When it drop down to 110℃, the controller work again.

Legal Disclaimer

Cannot decide what Kv I want still. lol.
by DogDipstick
May 28 2020 7:03pm
Forum: General Discussion
Topic: Hole Rivets for Two Thin Metal Plates?
Replies: 18
Views: 397

Re: Hole Rivets for Two Thin Metal Plates?

Am new to riveting and Would appreciate any help directing me towards the right rivet for the job and the right tool. Is it bad that I seriously considered building batteries with this style of rivet? Lol. https://www.ebay.com/itm/20-pcs-convertible-blind-rivet-flangeless-snap-fastener-3-8-studs-DO...
by DogDipstick
May 28 2020 8:50am
Forum: Items for Sale - New
Topic: Open Box NEw ANT 300A 24s
Replies: 0
Views: 107

Open Box NEw ANT 300A 24s

:)

300A 24s Brand New w/Screen. Located in Fleetwood Pa.

150$ shipped domestic.

:)
by DogDipstick
May 28 2020 8:37am
Forum: E-Bike Technical
Topic: Reducing controller's current
Replies: 4
Views: 110

Re: Reducing controller's current

Limit the amps to limit the power. This can be done by modulating the throttle value. Never use full throttle, is one way. Another is make your full throttle voltage cap out at 3.7v or something, with diodes to drop ( top out high) V.... not the full 5v that the controller expects... but a lower 3.8...
by DogDipstick
May 28 2020 6:33am
Forum: E-Bike General Discussion
Topic: Favourite high power hub motor?
Replies: 52
Views: 4904

Re: Favourite high power hub motor?

Why not run them both through the Grin Tech Motor Simulator and see which one comes closer to giving you the performance you want. As far as the MAC gears handling 400+ lbs...not a problem IMO. The clutch would be find too. Overheating will be your potential problem. Oh yeah I know how to use that ...
by DogDipstick
May 28 2020 5:45am
Forum: E-Bike General Discussion
Topic: Favourite high power hub motor?
Replies: 52
Views: 4904

Re: Favourite high power hub motor?

However, running hub motors with too much power, and too high kV for the speeds they can actually reach regularly, seems to be the (dumb) formula around these parts. If the power the motor makes at 80% of its unloaded RPM isn't enough to propel you on flat ground at 80% of its unloaded RPM, I think...
by DogDipstick
May 27 2020 3:45pm
Forum: Battery Technology
Topic: Creative Cooling Ideas?
Replies: 47
Views: 981

Re: Creative Cooling Ideas?

For me to forgive you, I would demand to know how you produce these awesome charts :lol: Unrelated indeed but super interesting! About power, yeah we all cross the 10kw here So yeah, they cook stuff easy with our hot ass weather. . I bet it is awesome though. I know some of yall go pretty hardcore ...
by DogDipstick
May 27 2020 3:32pm
Forum: Battery Technology
Topic: Creative Cooling Ideas?
Replies: 47
Views: 981

Re: Creative Cooling Ideas?

I would say that there's a slight problem with your temperature channel. Normally you wouldn't see such sharp dips in the temperature data. Forgot to ask, how are you venting the hub in order to maintain ambient pressure internally ? I think it is the speed of the sensor. You do not see alot. The s...
by DogDipstick
May 26 2020 8:34pm
Forum: E-Bike Technical
Topic: Problem: Is it the halls or the controller? Qs or Kelly?
Replies: 23
Views: 603

Re: Problem: Is it the halls or the controller? Qs or Kelly?

Having hall, phase, controller problems myself. Reading about issues and repairs. This thread is very interesting and helpful for the information it contains. Appreciate all the posts and sorry for your troubles. Got to the end and no answer? Any updates, solutions to this gremlin? Well, I did a......
by DogDipstick
May 26 2020 12:33pm
Forum: Battery Technology
Topic: Creative Cooling Ideas?
Replies: 47
Views: 981

Re: Creative Cooling Ideas?

the ATF is that Dexron?? I think Chrysler ATF would be bad for bearings? Bearings have seals. They are sealed cartridge bearings ( and rather large ones, might I say). I sealed both the flange, and the races, of the hub, and drilled out a brake bolt hole. Anaerobic Loctite and not a drop leaked yet...
by DogDipstick
May 26 2020 11:59am
Forum: Battery Technology
Topic: Creative Cooling Ideas?
Replies: 47
Views: 981

Re: Creative Cooling Ideas?

Unrelated, totally unrelated but I just wanted to say I friggin luv Oil cooling. I got about 100mL of the atf stuff in my hub and that, with the Grin thermal pid rollback, is actively giving me the best power my hub ever gave. Sometimes giving a good 40-50A for miles on a 20A hub motor that fried it...
by DogDipstick
May 26 2020 9:41am
Forum: E-Bike General Discussion
Topic: Favourite high power hub motor?
Replies: 52
Views: 4904

Re: Favourite high power hub motor?

If I was going to go through the effort ... my first choice ...a lot easier ...difficulty ... any advantage ...geared hub mid drive...the gearing ...direct drive motor. ...me,...g advantage ...red hub motor... torque ... it is "geared". With..you CAN ...gearing s... geared hub motor sort of ... app...
by DogDipstick
May 26 2020 4:47am
Forum: E-Bike General Discussion
Topic: Favourite high power hub motor?
Replies: 52
Views: 4904

Re: Favourite high power hub motor?

999zip999 wrote:
May 14 2020 2:20pm
Yea tried of the wieght I heat my bmc600 fs like my edge 1,500 but have more time to heat my muxus 3,000 v3 4t But this is my wieght limit A 205 to heavy.
I have always wanted to try a BMC V4 as a mid drive.
by DogDipstick
May 25 2020 8:06pm
Forum: General Discussion
Topic: Suggest someone other than Hobbyking
Replies: 46
Views: 965

Re: Suggest someone other than Hobbyking

Heres $0.60c / Wh. Some good reviews I heard a while back. I know some people who flew helis with them good. In stock Us free returns. Says it ships to Canada. https://www.ebay.com/itm/HRB-6S-5000mAh-22-2V-LiPo-Battery-50C-EC5-for-HELI-PLANE-QUAD-CAR-TRUCK-FPV/264494047633?_trkparms=aid%3D1110004%26...
by DogDipstick
May 25 2020 7:53am
Forum: E-Bike General Discussion
Topic: Wheelies
Replies: 33
Views: 2590

Re: Wheelies

I have never done any real wheelies on anything, despite having ridden I used to love wheelies, owned a few bikes that could pretty easily. I once tore the valve stem off a chrome wheel at speed on the front of a Kawa comming down at about 90-100mph. Wheelies are very dangerous if they are unexpect...
by DogDipstick
May 25 2020 7:30am
Forum: Battery Technology
Topic: Creative Cooling Ideas?
Replies: 47
Views: 981

Re: Creative Cooling Ideas?

1/2 the heating with 4x the mass equals 1/8 the temperature rise. Instead of a my 30° rise, yours is probably 4° over the same amount of time. W/Ah is the figure you want to kno. W/Ah. iced salt water bath? I was thinking alcohol. Lol. So many alcohols in this world. So many.
by DogDipstick
May 24 2020 7:55pm
Forum: Items Wanted
Topic: Looking complete electric bike nj/pa area
Replies: 1
Views: 249

Re: Looking complete electric bike nj/pa area

Hi and welcome to the forum. Where are you located? I can install a set of ebike parts on any bike, if you want to choose the kit. Per hour labor. Or I could sell youwhatever bike you want built, if you like, and budge the have it ( er, I mean, have the budget... ) . Welcome to the forum, research h...
by DogDipstick
May 24 2020 12:21pm
Forum: General Discussion
Topic: Suggest someone other than Hobbyking
Replies: 46
Views: 965

Re: Suggest someone other than Hobbyking

And you will only ever be building your own packs with used cells. And skilled labour time costs money And Used EV cells do not lend themselves easily to a “normal” the trick is to plan ahead,, watch for the HK clearance sales, and buy when the packs you are using are available. All absolut6ly true...
by DogDipstick
May 23 2020 7:13am
Forum: General Discussion
Topic: Suggest someone other than Hobbyking
Replies: 46
Views: 965

Re: Suggest someone other than Hobbyking

Man, I'll never use a Hobbyking lipo in an ebike again. 500$ pack that doesn't show on time and is dangerous? Nah. Yall know what I like. I have to buy some lipo packs for the helicopter soon. Then I will go HK or some other RC groups or Helifreak recommended pair of packs.., or two pair.. but... Na...