Search found 376 matches

by rui_fujino
May 15 2016 11:29pm
Forum: Items for Sale - New
Topic: Replacement motor axles
Replies: 83
Views: 8717

Re: Replacement motor axles

Is a replacement axle for HS3540 available for purchase anywhere?
by rui_fujino
Sep 13 2015 9:54am
Forum: E-Bike General Discussion
Topic: Ebike Project 72V HS3540 UK "build thread" +Videos!
Replies: 192
Views: 31044

Re: Ebike Project 72V HS3540 UK "build thread" +Videos!

Here are the updates! I"ve cleaned up the bike and drop out. And YES, the problem was with hall sensor. I"ve replaced all three just in case, I'm surprised with how clean the inside of the motor was despite all the riding and harsh conditions in the last three years! Here are the photos! Almost forg...
by rui_fujino
Sep 06 2015 6:09pm
Forum: E-Bike General Discussion
Topic: Ebike Project 72V HS3540 UK "build thread" +Videos!
Replies: 192
Views: 31044

Re: Ebike Project 72V HS3540 UK "build thread" +Videos!

Okay, Its been a while since my last update. I run into trouble last week...My ebike has finally given up on me on way to work... I was going about 30mph when light changed in front of me so I let the throttle go and regen kicked in, I hear grinding noise just like when sensor wires aren't matched a...
by rui_fujino
May 25 2015 11:51pm
Forum: E-Bike General Discussion
Topic: Ebike Project 72V HS3540 UK "build thread" +Videos!
Replies: 192
Views: 31044

Re: Ebike Project 72V HS3540 UK "build thread" +Videos!

Just installed everything here and I used different torquearms.. Now I am having the same problem as you did earlier.. the BB :D Which one did you buy? ~ the 52t.. I have 4-bolt chainrings though, so I don't know if it fits Sorry I didnt get back to you sooner. I had trouble logging in the other da...
by rui_fujino
May 07 2015 2:57pm
Forum: E-Bike General Discussion
Topic: Ebike Project 72V HS3540 UK "build thread" +Videos!
Replies: 192
Views: 31044

Re: Ebike Project 72V HS3540 UK "build thread" +Videos!

How are Doc's torquearms holding up with the dp410? I just bought a 2008 Epic comp and planning to do the same as your dropouts 8) Thanks m8 After over 3000miles, still holding solid! Only thing I've done is to paint it with anti-rust paint so I try winto rust away. Just make sure you heat it while...
by rui_fujino
Mar 13 2014 6:21pm
Forum: E-Bike General Discussion
Topic: Ebike Project 72V HS3540 UK "build thread" +Videos!
Replies: 192
Views: 31044

Re: Ebike Project 72V HS3540 UK "build thread" +Videos!

before you decide I'll tell u something from my experience. my first E-bike did have battery pack on the rear rack. it was so out of balance and I never got satisfied with how it looked. plus you will never find perfect stand so it will fall once in a while. if lipo is not protected very well, you c...
by rui_fujino
Mar 12 2014 8:40pm
Forum: E-Bike General Discussion
Topic: Ebike Project 72V HS3540 UK "build thread" +Videos!
Replies: 192
Views: 31044

Re: Ebike Project 72V HS3540 UK "build thread" +Videos!

As far as balance charging, hows your cheapo ebay one working? Do you think id be okay to bulk charge and use 3 battery medics (6s3p) kind of like what you did with 4? I can easily make 3 harnesses for the balance leads. Cant say I really understand why you use the battery medics to balance out the...
by rui_fujino
Feb 08 2014 11:14pm
Forum: E-Bike General Discussion
Topic: Ebike Project 72V HS3540 UK "build thread" +Videos!
Replies: 192
Views: 31044

Re: Ebike Project 72V HS3540 UK "build thread" +Videos!

1. Current configuration and parts (motor, controller, battery) 20s2p (83.5v 10ah Lipo),HS3540 sensored (MethTek), 12FET lyen @ 50A 2. Top speed and distances Top speed 45mph(72.4km/h) 3. Total bike weight 32kg. I've got most of how i set up the battery packs on fisrt couple pages of this thread so...
by rui_fujino
Jan 09 2014 5:34am
Forum: E-Bike General Discussion
Topic: Ebike Project 72V HS3540 UK "build thread" +Videos!
Replies: 192
Views: 31044

Re: Ebike Project 72V HS3540 UK "build thread" +Videos!

danjpendleton wrote:Looks like the bike is very versatile
thanks!

I've started sort of new life in Japan away from UK now so dont have time to update...
BUT! I"ve bought back my bike with me and is already assembled back! so will do some updates in next couple weeks! :mrgreen:
by rui_fujino
Oct 12 2013 6:51pm
Forum: E-Bike Build Threads / Photos & Video
Topic: GCinDC's Giant DH Comp
Replies: 2900
Views: 332809

Re: GCinDC's Giant DH Comp

yea! that totally happens to me too! I've always wondered if there are any ways to solve it other then to go slower....
by rui_fujino
Aug 01 2013 4:33pm
Forum: E-Bike General Discussion
Topic: Ebike Project 72V HS3540 UK "build thread" +Videos!
Replies: 192
Views: 31044

Re: Ebike Project 72V HS3540 UK "build thread" +Videos!

I'm leaving UK very soon and I'll continue to make some videos and the updates but for now...
I am selling my bms chargers so check it out if you live in UK!
by rui_fujino
Jun 01 2013 11:29am
Forum: Battery Technology
Topic: BMS Battery Alloy Shell Charger Problems
Replies: 597
Views: 46143

Re: BMS Battery Alloy Shell Charger Problems

Hi, I've got some c4140 transistors for 600w charger replacement.
Questions is, can I use them for 400w charger too? The 400w ones are 4139.
by rui_fujino
May 18 2013 12:35pm
Forum: E-Bike General Discussion
Topic: First build - show me the way of the e-bike!
Replies: 15
Views: 1234

Re: First build - show me the way of the e-bike!

I think for you. the best thing to do is to buy kit with 48v 1000w motor, 25A controller and 10/15Ah Lifepo4. most of the ebay kit with battery are this type. this is good example: http://www.ebay.co.uk/itm/1000W-Motor-48V-15AH-Lithium-Ion-Battery-Electric-Bicycle-Conversion-kit-/390594910673?pt=LH_...
by rui_fujino
May 17 2013 8:03pm
Forum: E-Bike General Discussion
Topic: First build - show me the way of the e-bike!
Replies: 15
Views: 1234

Re: First build - show me the way of the e-bike!

1. Is there any reason I should wait till I have a bike before I spring for the rest of the gear? Dropout spacing maybe? 2. Recommendations on a balancer that would work with my large lead acid batteries and accommodate my large amount of laptop battery cells in the future? 3. How many amp-hours do...
by rui_fujino
May 14 2013 1:40am
Forum: E-Bike General Discussion
Topic: Your Favorite Ebike Tire
Replies: 47
Views: 4517

Re: Your Favorite Ebike Tire

itchynackers wrote:Specialized Armadillo Crossroads......bulletproof.
+1 I like it too!
by rui_fujino
May 13 2013 9:22pm
Forum: E-Bike Technical
Topic: Rear axle dropout... Forgot torque arms
Replies: 13
Views: 954

Re: Rear axle dropout... Forgot torque arms

Sorry to change the subject but what freewheel / rear gear do you have there?? it doesn't look like normal freewheel?!
by rui_fujino
May 10 2013 10:42am
Forum: E-Bike Build Threads / Photos & Video
Topic: GCinDC's Giant DH Comp
Replies: 2900
Views: 332809

Re: GCinDC's Giant DH Comp

GCinDC wrote: and what to do about the stickers? taking each one off will take a night! :roll:
Easiest way I know is to use heatgun/hair dryer. that’s how Fox mechanics removes old decal to new ones when they service customers fork.

I hope this works on yours too
by rui_fujino
May 08 2013 3:29pm
Forum: E-Bike General Discussion
Topic: An interesting designer portfolio case example of e-bike
Replies: 9
Views: 543

Re: An interesting designer portfolio case example of e-bike

Ben Wilson wrote:Am I the only one who can't see a motor on this bike?
No, That bike has no motor, controller, battery, brake/gear cables, brake levers, suspension and derailleur. I may have missed more :P
by rui_fujino
May 07 2013 11:52am
Forum: E-Bike General Discussion
Topic: An interesting designer portfolio case example of e-bike
Replies: 9
Views: 543

Re: An interesting designer portfolio case example of e-bike

pretty cool stuff. Few things I've noticed. they haven't got anywhere near finish...they need to make the bike functionable before they start converting it to electric. At their stage, no brake, no gears, no lights and no suspensions. With extra weights on the bike with battery, motor, controller ec...
by rui_fujino
May 06 2013 10:21pm
Forum: Items for Sale - New
Topic: Doc's ULTIMATE TORQUE ARMS fit most of the frame UPDATE 2013
Replies: 578
Views: 91540

Re: Doc's ULTIMATE TORQUE ARMS fit most of the frame UPDATE

I just PM'd for a set too :-) It's only a direct drive 36V 500W rear setup from Vpower.hk so not all that powerful anyway. My bike is a cheaparse Milazo full suspension, all steel. From that I can confidently say you wont need torque plate as strong as this one... but If you want one for the future...
by rui_fujino
May 04 2013 2:15pm
Forum: E-Bike Technical
Topic: Definitive Tests on the Heating and Cooling of Hub Motors
Replies: 2070
Views: 315521

Re: Definitive Tests on the Heating and Cooling of Hub Motor

I know some people must have thought about this but has anyone attempted to make a use of peltier? I think instead of trying to use ambient temperature to cool hub motor, we should be using something which is cold to cool hub motor. since the hub is designed to spin, we can use the peltier to cool d...
by rui_fujino
May 03 2013 7:18pm
Forum: Battery Technology
Topic: BMS Battery Alloy Shell Charger Problems
Replies: 597
Views: 46143

Re: BMS Battery Alloy Shell Charger Problems

Hey All - another sad BMS Battery Alloy Shell Charger owner here. My 74v 600W unit smoked itself last night, and for no good reason. No abuse, kept a room fan blowing on it, they stayed inside and never got exposed to bad weather. I'm reading over the thread now, will try to figure out if I can fix...
by rui_fujino
May 03 2013 3:04pm
Forum: E-Bike General Discussion
Topic: Ebike Project 72V HS3540 UK "build thread" +Videos!
Replies: 192
Views: 31044

Re: Ebike Project 72V HS3540 UK "build thread" +Videos!

something very annoying happened today... my bulk charger died again (3rd time). this time, cheap chinese resistor decided to blow up 5min into charging... IMG-20130503-01445.jpg Having BMSBattery charger gives me a good reason to balance charge individually every now and then :wink: I'll replace it...
by rui_fujino
Apr 24 2013 5:32pm
Forum: E-Bike General Discussion
Topic: Ebike Project 72V HS3540 UK "build thread" +Videos!
Replies: 192
Views: 31044

Re: Ebike Project 72V HS3540 UK "build thread" +Videos!

oh! I forgot to upload the final build pictures! here you go!
IMG-20130410-01393.jpg
IMG-20130421-01436.jpg
IMG-20130421-01438.jpg
by rui_fujino
Apr 24 2013 11:55am
Forum: E-Bike General Discussion
Topic: Ebike Project 72V HS3540 UK "build thread" +Videos!
Replies: 192
Views: 31044

Re: Ebike Project 72V HS3540 UK "build thread" +Videos!

Here is a Looong waited new ebike video!
this is completely finished build of my 5th ebike! since the frame is lighter my acceleration feels so much better!