Search found 1262 matches

by hjns
Dec 13 2013 9:36am
Forum: E-Bike General Discussion
Topic: Temperature range of a q100 motor?
Replies: 8
Views: 459

Re: Temperature range of a q100 motor?

dgk02 wrote:.... at night but the battery sleeps with me so it starts at room temp. I
A battery? funny, I have my wife to keep me warm during the long cold nights.... :mrgreen:
by hjns
Dec 13 2013 3:42am
Forum: E-Bike Technical
Topic: Cycle Analyst Android App
Replies: 132
Views: 25687

Re: Cycle Analyst Android App

Yes of course! What would you like to know about the bluetooth connection? Thanks. I have some more detailed questions, as I am not really electronically educated: Could you post a link to where you bought the bluetooth (BT) serial connection? Do I assume correctly that you connected the CAv3 seria...
by hjns
Dec 07 2013 8:21am
Forum: E-Bike Technical
Topic: Cycle Analyst Android App
Replies: 132
Views: 25687

Re: Cycle Analyst Android App

Hi Bart, nice job. Could you post the details for the Bluetooth connection? I would like to try as well. Thanks!
by hjns
Dec 05 2013 7:49am
Forum: E-Bike Technical
Topic: Custom length spokes - how do you do it?
Replies: 27
Views: 2496

Re: Custom length spokes - how do you do it?

Correct.

However, I ordered the wrong length of spokes once.... you should do the calculations for those scenarios as well.
by hjns
Dec 05 2013 7:36am
Forum: E-Bike Technical
Topic: Custom length spokes - how do you do it?
Replies: 27
Views: 2496

Re: Custom length spokes - how do you do it?

I bought:
Then I get some nice black steel long spokes, and cut them and thread them in whatever length I need.
by hjns
Dec 02 2013 2:29pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Norco VPS2 with MAC 7T, 12S 3P turnigy Lipo.
Replies: 2
Views: 736

Re: Norco VPS2 with MAC 7T, 12S 3P turnigy Lipo. Very happy!

I'm trying to decide on the CA V3 or V2.3. The main feature that interests me is the current throttle... And when I was doing the research for my build, GNG had just came out. That is why I went with MAC Did not know that there was a 7T Mac, but it must be fast. Read the manual from Teklektik on th...
by hjns
Nov 24 2013 9:43am
Forum: E-Bike General Discussion
Topic: Calculating/estimating top speed
Replies: 10
Views: 1227

Re: Calculating/estimating top speed

Hi Dogman and Teklektik, Yes, I think your remarks are spot on, and prove again the low variability (=high accuracy) of the estimates of Ebike.ca's simulator. Furthermore, I was informed that there is a higher-power (350W?) version of the crankmotor, but at least that is not the model that I have. O...
by hjns
Nov 24 2013 4:11am
Forum: E-Bike Non-hub Motor Drives
Topic: Complete switch - Cheap crankdrive MTB
Replies: 41
Views: 8137

Re: Complete switch - Cheap crankdrive MTB

Mac 6T has come in. Paul from EM3EV gave me some good suggestions how to use the included thermistor with my CAv3. Now waiting for the 48V 15Ah pack from BMSBattery to come in. Paul suggested a low voltage 12FET controller, but I will try it (against his advice) with my Lyen 12FET4115 controller tha...
by hjns
Nov 24 2013 4:02am
Forum: E-Bike General Discussion
Topic: Calculating/estimating top speed
Replies: 10
Views: 1227

Re: Calculating/estimating top speed

I have bought the Bofeili. Read my experiences here . I love all the explanations and calculations above. Well done. However, in real life, the 36V Bofeili gets you to 25kmh max without pedalling. And only when the battery is completely charged. No way will you get anywhere near 30kmh without light ...
by hjns
Nov 21 2013 1:32pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Crystalite 5404 Dual Suspension bike Build log
Replies: 26
Views: 7745

Re: Crystalite 5404 Dual Suspension bike Build log

Nice and clean build, good choice of components, good that you added a BMS to the lipos, and it looks like a winner. I do have several comments: I would be keeping the lipos on the safe side. Put the cutoff at 3.5 V cell level, so you don't run into trouble with cells lower than that. I would also b...
by hjns
Nov 19 2013 5:57am
Forum: E-Bike Non-hub Motor Drives
Topic: Complete switch - Cheap crankdrive MTB
Replies: 41
Views: 8137

Re: Complete switch - Cheap crankdrive MTB

Any motor specifications?
by hjns
Nov 19 2013 3:40am
Forum: E-Bike Non-hub Motor Drives
Topic: Complete switch - Cheap crankdrive MTB
Replies: 41
Views: 8137

Re: Complete switch - Cheap crankdrive MTB

Hi Bangbag, Thanks for that post. As you may have read, my experiences vary. Could you tell us how you compare your Bofeilli with the other bikes you have driven? And which controller did you use? With "Motorenergy" do you mean "phase current", or do you mean that the main battery current is limited...
by hjns
Nov 08 2013 4:19pm
Forum: E-Bike Non-hub Motor Drives
Topic: Complete switch - Cheap crankdrive MTB
Replies: 41
Views: 8137

Re: Complete switch - Cheap crankdrive MTB

cwah wrote:Why can't you increase your voltage?
I may end up with 48V....
by hjns
Nov 08 2013 4:17pm
Forum: E-Bike Non-hub Motor Drives
Topic: Complete switch - Cheap crankdrive MTB
Replies: 41
Views: 8137

Re: Complete switch - Cheap crankdrive MTB

hjns please be careful with that fork & frame combo! I You may already know this, but long-travel triple-crown forks such as the Boxxer typically put more stress on the headtube, and if the bike wasn't designed with a strong or reinforced headtube it could break off. Just FYI, coming from someone i...
by hjns
Nov 08 2013 6:54am
Forum: E-Bike Non-hub Motor Drives
Topic: Complete switch - Cheap crankdrive MTB
Replies: 41
Views: 8137

Re: Complete switch - Cheap crankdrive MTB

cwah wrote:ezee would be lighter at 3.7kg and still able to do 45km/h
I was not aware of that. The ebikes.ca simulator gives only 30-35km/h for the ezee or ezee v2 at 36V. Only when going up to 48V can you expect 40 km/h, according to Grin.
by hjns
Nov 07 2013 8:57am
Forum: E-Bike Non-hub Motor Drives
Topic: Complete switch - Cheap crankdrive MTB
Replies: 41
Views: 8137

Re: Complete switch - Cheap crankdrive MTB

That will be fine for 45km/h max. with pedaling... But isn't that illigal like the cromotor? Not when I have it evaluated and approved at the local authorities. The main limitation of the Cromotor is that it does not really move at 36V and <1kW. The 1kW is the real power limit defined in local (Swi...
by hjns
Nov 07 2013 6:25am
Forum: E-Bike Non-hub Motor Drives
Topic: Complete switch - Cheap crankdrive MTB
Replies: 41
Views: 8137

Re: Complete switch - Cheap crankdrive MTB

Had a nice discussion with Paul from EM3EV. He thinks that a 6FET is not enough for the high turn Mac, and that a sensorless controller does not work well. Now I still have a Lyen 12FET 4115 sensored controller here, so I can use that one if my 6FET 4110 sensorless brakes down. Furthermore, he does ...
by hjns
Nov 07 2013 4:29am
Forum: E-Bike General Discussion
Topic: Requesting Help for Setting up First eBike - EM3ev
Replies: 9
Views: 1058

Re: Requesting Help for Setting up First eBike - EM3ev

Hi there, I usually get a spark when connecting my battery to the controller. What happens is that the capacitors in the controller get charged very quickly when you connect the battery. This will create the spark. There are ways to get rid of the spark. One way is to first connect the battery using...
by hjns
Nov 06 2013 8:59am
Forum: E-Bike General Discussion
Topic: CroBorg Super Commuter
Replies: 1029
Views: 128172

Re: CroBorg Commuter

You would probably call it a "trouser".

Image
by hjns
Nov 05 2013 2:33pm
Forum: E-Bike General Discussion
Topic: CroBorg Super Commuter
Replies: 1029
Views: 128172

Re: CroBorg Commuter

With the cold setting in, I wear a fully padded motor jacket gloves and MTB shoes that have protection at heels and toes. When winter comes, I will add a fully padded motor hose as well.
by hjns
Nov 05 2013 7:16am
Forum: E-Bike Non-hub Motor Drives
Topic: Complete switch - Cheap crankdrive MTB
Replies: 41
Views: 8137

Re: Complete switch - Cheap crankdrive MTB

oh, it's all about legality? Can't you just have an insurance? :( Insurance won't cover anything if the bike is not approved. For anything faster than 25kmh and up to 45kmh, we need an officially approved bike, showing that it is approved using a yellow numberplate. This yellow plate also means it ...
by hjns
Nov 05 2013 5:59am
Forum: E-Bike Non-hub Motor Drives
Topic: Complete switch - Cheap crankdrive MTB
Replies: 41
Views: 8137

Re: Complete switch - Cheap crankdrive MTB

Mainly, Because there is no way to make it legal here in Switserland. There are some other reasons as well. One is that using 36v on a cromotor is like putting a 12cylinder Ferrari motor in a VW beetle.
by hjns
Nov 05 2013 5:37am
Forum: E-Bike Non-hub Motor Drives
Topic: Complete switch - Cheap crankdrive MTB
Replies: 41
Views: 8137

Re: Complete switch - Cheap crankdrive MTB

OK, so where to take it from here? First, I don't want a heavy (10kg) hubmotor anymore. And I don't want to pull any huge currents, and I want to stay at 36V Li Ion batteries with internal BMS thingies that can deliver maximum 15A. However, I do want to go faster (45kmh) and have a full 30km range (...
by hjns
Oct 28 2013 6:49am
Forum: E-Bike Non-hub Motor Drives
Topic: Complete switch - Cheap crankdrive MTB
Replies: 41
Views: 8137

Re: Complete switch - Cheap crankdrive MTB

Second post updated with actual specs of the bike that I now have in my possession.