Search found 276 matches

by bionx 1954
Feb 03 2019 2:08pm
Forum: Battery Technology
Topic: My design for a 72V split pack
Replies: 11
Views: 606

Re: My design for a 72V split pack

I have been using the 36v split packs for a long time as shown in your wiring diagram with no problem .I have 2 36v bosch 12A packs ( 6x 36v@4A Bosch bat 838 ) I use a 72v grin satiator to charge them. I usually charge the 36v pack together at 40.7 v @ 5A , or series the packs and use 81.2 @ 5A for ...
by bionx 1954
Dec 31 2018 3:46pm
Forum: E-Bike General Discussion
Topic: Rim brake pads after ebike conversion
Replies: 9
Views: 659

Re: Rim brake pads after ebike conversion

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I'm also have been using KS Ebike pads on rear and really has impressive stopping and have about 2000 km and pad is only slightly worn. Original KS pads worn out before 2000 km.
by bionx 1954
Dec 10 2018 10:08am
Forum: E-Bike Technical
Topic: 36/72V switch for Solar charging my bike
Replies: 11
Views: 588

Re: 36/72V switch for Solar charging my bike

I have 2 36v packs that terminate into a Anderson plug that has 4 connector . I then have a matching 4 connector Anderson plug that series the two 36v packs to 72v that goes to the controller . I made a charge plug that plugs into the 36v packs that parallels the 2 packs to one . So when I what 72v ...
by bionx 1954
Nov 26 2018 2:39pm
Forum: Battery Technology
Topic: Charging two 36V batteries using the Cycle-Satiator
Replies: 1
Views: 277

Re: Charging two 36V batteries using the Cycle-Satiator

Hi I have the 72v 5A satiator with 2 36v Bosch battery packs each 12 A. I normally charge them in at 36v@ 5A ( 180watts/hr.)if I am not in a rush. When on the road and need a fast charge I series the 36 v packs and charge at 72V @ 5A (360 watts/hr.)
by bionx 1954
Aug 22 2018 12:44pm
Forum: E-Bike Technical
Topic: Finding good quality V Brake Pads
Replies: 19
Views: 3999

Re: Finding good quality V Brake Pads

I have been using Kool Stop Ebike pads for 2000kM and found them really good for stopping , and longevity . The pads are inserts so no need to replace the whole assembly .
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by bionx 1954
Aug 03 2018 2:52pm
Forum: Battery Technology
Topic: 18V cordless tool battery packs, brand for most value Ah/$
Replies: 25
Views: 1718

Re: 18V cordless tool battery packs, brand for most value Ah/$

If you are looking to have a 36 v system you would need pairs of 18v packs. So 4 X18v@5A would give a 36v@10A battery. You could then use a 36v charger to charge, or unplug the series harness and use a 18v charger. I use thin strips of metal about 1/4 in wide and fold over until it thick enough to s...
by bionx 1954
Aug 03 2018 2:19pm
Forum: Battery Technology
Topic: 18V cordless tool battery packs, brand for most value Ah/$
Replies: 25
Views: 1718

Re: 18V cordless tool battery packs, brand for most value Ah/$

I have only used Bosch 18/36 v packs. I leave them unopened and use sheet metal folded over to get a nice tight connection on the slide in terminals then wire them to each other to get 36v packs. I then series the 36v packs to get 72v. I had good success doing this and had no problems so far. For ch...
by bionx 1954
Aug 03 2018 10:27am
Forum: E-Bike General Discussion
Topic: Questions about ebike rims
Replies: 23
Views: 1276

Re: Questions about ebike rims

I had the same problems trying to get a rim online here in Canada . I found a local bike shop that does wheel building and got a Alex DM21 for 30.00 cdn also Sapin 14/13 spokes . You need a 26 in down hill double walled, 36 hole, rim brake compatible rim. Most good brand name rims are ok.
by bionx 1954
Aug 03 2018 9:47am
Forum: Battery Technology
Topic: 18V cordless tool battery packs, brand for most value Ah/$
Replies: 25
Views: 1718

Re: 18V cordless tool battery packs, brand for most value Ah/$

I parallel my packs together to get maximum power . also this causes less stress on your battery . Using only 1 battery at a time would not be a good idea and would shorten your battery lifespan
by bionx 1954
Aug 02 2018 7:47pm
Forum: Battery Technology
Topic: 18V cordless tool battery packs, brand for most value Ah/$
Replies: 25
Views: 1718

Re: 18V cordless tool battery packs, brand for most value Ah/$

Amazon .ca has 2x GSX- 18v@6.3A Bosch Core batteries plus 18v charger with built in cooling fans for 220.00 cdn, about 165.00 us
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by bionx 1954
Aug 02 2018 5:20pm
Forum: Battery Technology
Topic: 18V cordless tool battery packs, brand for most value Ah/$
Replies: 25
Views: 1718

Re: 18V cordless tool battery packs, brand for most value Ah/$

I'm using Bosch bat838 36v@4A, also Bosch bat620 18v@4A. Sometimes the 18v bosch bat620 are on sale and with 2 you can series them 36v@4A. Here we don't have Bosch 36v@6A. I been using Bosch Fat 41fCK52HBCL__SX425_.jpg Packs for several years with good luck. I'm curious to see how the new Bosch Core...
by bionx 1954
Jul 30 2018 11:57am
Forum: E-Bike Technical
Topic: Lower no-load speed with sine wave controller?
Replies: 11
Views: 596

Re: Lower no-load speed with sine wave controller?

When changing controllers you may need to adjust R shunt value if using a Cycle Analyst to the new controller to get maximum power.
by bionx 1954
Jul 30 2018 11:47am
Forum: E-Bike General Discussion
Topic: Questions about ebike rims
Replies: 23
Views: 1276

Re: Questions about ebike rims

Most 26 in DH rims are a good choice

I use a Alex DM24 with Sapin 14/13g butted stainless steel spokes. It is very strong and have had no problems in 15,000 km

You mentioned your tire is 2.2 cm
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did you mean 2.2 in ?
by bionx 1954
Jul 25 2018 9:42am
Forum: E-Vehicles General Discussion
Topic: Series Parallel Battery & Open voltage controller
Replies: 13
Views: 1381

Re: Series Parallel Battery & Open voltage controller

41rt6wZFlPL__AA218_.jpg Bosch original packs used Sony konion 18650, they now have Samsung cells. The Bosch 36v Fat Packs were very popular in the early ebike days. Here in Canada a 36 v@4A cost about 200.00 cdn/ 145.00 us. I have being using them for several years, These packs last me about 3 year...
by bionx 1954
Jul 22 2018 8:48am
Forum: E-Vehicles General Discussion
Topic: Series Parallel Battery & Open voltage controller
Replies: 13
Views: 1381

Re: Series Parallel Battery & Open voltage controller

My batteries are each made up of 3 bosch bat838 36v power tool packs in parallel . so each battery is 36v@12a. These bosch pack do not have a bms. They can provide crazy amount of current. Yes to change voltage I need to physically unplug one harness and plug in the other. But there is no need for r...
by bionx 1954
Jul 21 2018 5:27pm
Forum: E-Vehicles General Discussion
Topic: Series Parallel Battery & Open voltage controller
Replies: 13
Views: 1381

Re: Series Parallel Battery & Open voltage controller

I have a 36/72 V setup I have two 36v/12 a bosch batteries a Grinfineon 36-72 40 amp controller So I have the batteries in parallel for 36 v to controller . For 72v I have another wiring harness that series the 2 batteries for 72 v So you need to switch wiring harness from batteries to controller to...
by bionx 1954
May 19 2018 1:01pm
Forum: E-Bike General Discussion
Topic: hi who has experience with canadian police and ebike spec issue?
Replies: 35
Views: 1892

Re: hi who has experience with canadian police and ebike spec issue?

I live in Ottawa, have been riding my ebike for 10 years. My bike is 'not legal' 3000 watts. I have never been stopped by police. As mentioned you need to be responsible and drive with accordance to laws. Here in Ottawa only the 'moped type ebikes' are banned from the NCC bike path
by bionx 1954
May 09 2018 7:08pm
Forum: Battery Technology
Topic: Tool battery for extra range
Replies: 22
Views: 2248

Re: Tool battery for extra range

I have been using Bosch bat 838 36v@4A.for 3 years . I charge them to 40.7V to extend the cycle life. You can use any suitable charger by connecting +,- on the battery terminal which is marked. I am using 2 groups of 3x36v4a = 36 v@12a each. I am running a 72v system on 9C rear pulling 3000 watts wi...
by bionx 1954
Feb 03 2018 4:56pm
Forum: E-Bike Technical
Topic: Need advice on a mid drive hub motor project
Replies: 1
Views: 336

Need advice on a mid drive hub motor project

Aluminum-bicycle-frame-bike-frame-with-built.jpg Hi I am thinking of a new project using a 9C rear hub cassette motor as a mid drive. Something along the line of a Stokemonkey type mid drive set up with the motor mounted in the low part of the frame like in the attached picture which is not my bike...
by bionx 1954
Jan 11 2018 8:02pm
Forum: E-Bike General Discussion
Topic: Dumb accessory wiring question
Replies: 1
Views: 421

Re: Dumb accessory wiring question

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The easy way would be to tap into your battery, and use a dc-dc step down converter. A 60 volt should handle your battery voltage. There are many dc-dc converters on ebay. some are 60V to 12V, or 60 v to 5 v that have usb's in the converter,
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60 volt to 5 v with usb included
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by bionx 1954
Dec 24 2017 5:52pm
Forum: Items for Sale - New
Topic: Grin 9C M2706 Rear 40% off clearence sale $ 145.00 cdn
Replies: 1
Views: 485

Grin 9C M2706 Rear 40% off clearence sale $ 145.00 cdn

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Grin has a 40% off clearance sale on all remaining stock 9C 2706 rear motors . Sale price is $ 145.00 CDN approx. $ 110.00 US.
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by bionx 1954
Nov 18 2017 10:07am
Forum: E-Bike Technical
Topic: Wiring help
Replies: 3
Views: 436

Re: Wiring help

I have the same basic set up. I use my key switch in seires with the ignition wire. So when I leave the bike unattended I remove the key so that the ignition on/ off switch is disabled. This is the simple solution and the key switch has a very low current through it as opposed to using the battery d...
by bionx 1954
Oct 20 2017 5:43pm
Forum: E-Bike General Discussion
Topic: My new build
Replies: 3
Views: 636

Re: My new build

Yes I have had the Softride suspension stem for several years. I really like it. It has about 3 in of travel and does a good job absorbing the road bumps, I was going to put a front fork suspension on my bike, but I do not like the added weight. Thanks Neil
by bionx 1954
Oct 18 2017 4:57pm
Forum: E-Bike General Discussion
Topic: My new build
Replies: 3
Views: 636

My new build

es 1.jpg [attachment=2]ES2.jpg[/attachm my Tidalforce S-750 Equipment 9C 3005 Motor 72V@40A Grin controller 72 V 10 A Bosch battery Thudbuster Softride stem suspension Cycle Analyst 2.4 Sapin spoke laced DM24 rear wheel I built the battery boxes and rear rack with 1 1/2 aluminium angle stock , 1 in...