Search found 594 matches

by tahustvedt
Jun 10 2016 12:11pm
Forum: E-Bike Non-hub Motor Drives
Topic: Project: Home made velomobile design with crank or mid motor
Replies: 338
Views: 70140

Re: Project: Home made velomobile design with crank or mid m

I can't pedal it that fast. It's not even geared for 50 km/h. I can do 40, but it's hard. Harder than my road bike. I have a Powertap 26" rear wheel on my MTB, but haven't done any tests. I would have if the velo was faster, but now it's just a pig so I haven't bothered. :) I'd have to change the ti...
by tahustvedt
Jun 09 2016 9:57am
Forum: E-Bike Non-hub Motor Drives
Topic: Project: Home made velomobile design with crank or mid motor
Replies: 338
Views: 70140

Re: Project: Home made velomobile design with crank or mid m

I've added a couple of air outlets behind the cockpit. Hopefully they are enough. They are 60 mm diameter. The hole in the nose is also 60 mm diameter, so there's twice the area out as in, in addition to the other holes in the structure.
velo206.jpg
velo206.jpg (122.08 KiB) Viewed 1119 times
velo207.jpg
velo207.jpg (89.24 KiB) Viewed 1119 times
velo208.jpg
velo208.jpg (134.83 KiB) Viewed 1119 times
by tahustvedt
Jun 09 2016 9:52am
Forum: E-Bike Non-hub Motor Drives
Topic: Programming the Bafang Middrive BBS01+BBS02
Replies: 1155
Views: 343041

Re: Programming the Bafang Middrive BBS01+BBS02

I cut away the heat shrink tubing to see what was different from the one I made earlier, and there's one extra wire connected. I haven't checked which pin it is. Could be a different TTL-adapter too. I haven't compared then closely.
by tahustvedt
Jun 09 2016 9:26am
Forum: E-Bike Non-hub Motor Drives
Topic: Programming the Bafang Middrive BBS01+BBS02
Replies: 1155
Views: 343041

Re: Programming the Bafang Middrive BBS01+BBS02

Update. I received my cable from http://www.ebay.com/itm/231957511874, and it works with my norwegian BBS02 controller. Happy. :)
by tahustvedt
Jun 08 2016 4:21pm
Forum: E-Bike Non-hub Motor Drives
Topic: Bewo, New Crank-drive Motor
Replies: 252
Views: 66021

Re: Bewo, New Crank-drive Motor

That pinion gear looks really fragile. There's no center section to it so it probably bends under load. Also looks like it has cracks or forming marks on the teeth, but that could be grease.
by tahustvedt
Jun 06 2016 12:06pm
Forum: E-Bike Non-hub Motor Drives
Topic: Project: Home made velomobile design with crank or mid motor
Replies: 338
Views: 70140

Re: Project: Home made velomobile design with crank or mid m

Mycontroller broke the other day. I ordered some new transistors and replaced them all with these: https://www.digikey.no/product-search/en?keywords=296-37289-5-nd Now it's working again. These should last a while. :) I've used the velo more in the last week. I fixed the leaky shock with some silico...
by tahustvedt
Jun 03 2016 12:56pm
Forum: E-Bike Non-hub Motor Drives
Topic: Project: Home made velomobile design with crank or mid motor
Replies: 338
Views: 70140

Re: Project: Home made velomobile design with crank or mid m

Very little. :) I grew tired of the leaking right shock and steaming windows this winter. I'm adding ventilation now. I would really like some proper oil shocks for the front suspension. The friction shocks on there now are as plush as a block of wood and the right one leaks air. I plan to add a win...
by tahustvedt
Jun 02 2016 3:26pm
Forum: E-Bike Non-hub Motor Drives
Topic: Programming the Bafang Middrive BBS01+BBS02
Replies: 1155
Views: 343041

Re: Programming the Bafang Middrive BBS01+BBS02

I already have one home made cable that works with my BBS01 from China, but none of my BBS02 from a norwegian vendor. Fingers crossed. Could be that a different TTL adapter is needed.
by tahustvedt
Jun 02 2016 2:39pm
Forum: E-Bike Non-hub Motor Drives
Topic: Programming the Bafang Middrive BBS01+BBS02
Replies: 1155
Views: 343041

Re: Programming the Bafang Middrive BBS01+BBS02

Why does my BBS01 connect just fine while my BBS02 does not? Is there a different programming software out there? Different pinouts? All I can find is the same V1.00.01 that works with my BBS01. Granted, my BBS02 has a blown FET, but that shouldn't matter. It communicated just fine with the display...
by tahustvedt
Jun 01 2016 9:34am
Forum: E-Bike Non-hub Motor Drives
Topic: Project: Home made velomobile design with crank or mid motor
Replies: 338
Views: 70140

Re: Project: Home made velomobile design with crank or mid m

I need more heat than the propane torch can provide to braze large tubes. It works with small parts. The bolted connections are holding up fine. I blew the controller of the Bafang on monday when I tried to start in a hill in highest gear. Stupid move, but I was able to order a new controller the sa...
by tahustvedt
May 31 2016 7:10pm
Forum: E-Bike Non-hub Motor Drives
Topic: Programming the Bafang Middrive BBS01+BBS02
Replies: 1155
Views: 343041

Re: Programming the Bafang Middrive BBS01+BBS02

Why does my BBS01 connect just fine while my BBS02 does not? Is there a different programming software out there? Different pinouts? All I can find is the same V1.00.01 that works with my BBS01. Granted, my BBS02 has a blown FET, but that shouldn't matter. It communicated just fine with the display....
by tahustvedt
Oct 07 2015 1:42am
Forum: E-Bike Non-hub Motor Drives
Topic: bosch classic ebike plastic gear
Replies: 27
Views: 8260

Re: bosch classic ebike plastic gear

I contacted a few different ebike shops with no success. Looks like this is going to turn into a project. It shouldn't be too hard to 3d print a new one. I doubt a PLA version will be very durable, but once I have a working replacement part I can find someone to CNC one out of aluminum. Good plan, ...
by tahustvedt
Oct 04 2015 6:16pm
Forum: E-Bike Non-hub Motor Drives
Topic: Project: Home made velomobile design with crank or mid motor
Replies: 338
Views: 70140

Re: Project: Home made velomobile design with crank or mid m

I usually cruise between 25-30 km/h, with casual clothes and trying not to get too sweaty. I fantasized about amazingly reduced resistance over my road bike but it's probably about the same as sitting up on a road bike. I'm riding with the legal speed setting of 25 km/h. The 250 W "nominal" motor is...
by tahustvedt
Sep 26 2015 12:09pm
Forum: E-Bike Non-hub Motor Drives
Topic: Project: Home made velomobile design with crank or mid motor
Replies: 338
Views: 70140

Re: Project: Home made velomobile design with crank or mid m

tahustvedt, "If I were to make another transport velo I would make it with four wheels, like perbear suggested early in the thread." You velomobile seems fabulous to me just as it is. But if you are considering four wheels, have you seen this? https://endless-sphere.com/forums/viewtopic.php?f=7&t=7...
by tahustvedt
Sep 26 2015 10:17am
Forum: E-Bike Non-hub Motor Drives
Topic: Project: Home made velomobile design with crank or mid motor
Replies: 338
Views: 70140

Re: Project: Home made velomobile design with crank or mid m

The rear feels a bit "loose". The rear wheel flexes sideways a bit, which is unnerving, but I guess normal for a tadpole trike. It's a very strong wheel though so it shouldn't be a problem, it's just unexpected. I can hear the carbon fiber wheel covers wobble as the wheel flexes, so that's how I kno...
by tahustvedt
Sep 25 2015 5:34pm
Forum: E-Bike Non-hub Motor Drives
Topic: Project: Home made velomobile design with crank or mid motor
Replies: 338
Views: 70140

Re: Project: Home made velomobile design with crank or mid m

The new 6S battery arrived today, so I made up the pack with the 4S I already had and went for a ride. I rode 23 km with a LOT of hills. Towards the end the indicator dropped one bar under high loads in hills. I forgot the Wattmeter so I decided to call it a day as I didn't know what the voltage was...
by tahustvedt
Sep 24 2015 6:23am
Forum: E-Bike Non-hub Motor Drives
Topic: Project: Home made velomobile design with crank or mid motor
Replies: 338
Views: 70140

Re: Project: Home made velomobile design with crank or mid m

Strong winds are very rare here. I did experience some relatively strong gusts last week though, and it felt like it was moving slightly side to side at above 45 km/h, but I guess that's to be expected with a single rear wheel. I spend most of my time on the multi use paths, except when I'm going fa...
by tahustvedt
Sep 23 2015 4:35pm
Forum: E-Bike Non-hub Motor Drives
Topic: Project: Home made velomobile design with crank or mid motor
Replies: 338
Views: 70140

Re: Project: Home made velomobile design with crank or mid m

It works. :) The battery I'm using is starting to show its age, and I don't want to find out what the real range is. It's an RC lipo from 2008 which used to power a 1:8 scale F-16 EDF at 100 A. I will probably receive a new 12 Ah battery on friday. I also need to finish with the ventilation before I...
by tahustvedt
Sep 18 2015 11:59am
Forum: E-Bike Non-hub Motor Drives
Topic: Project: Home made velomobile design with crank or mid motor
Replies: 338
Views: 70140

Re: Project: Home made velomobile design with crank or mid m

Good to have, looks like you need it :( Looks like you got condensation on the roof from the cold of the sky. If the cover alone doesn't stop that you could add a blankets on top of the velomobile. A fan - even a tiny one, will also make a big difference. That's rain drops. It was raining when I pu...
by tahustvedt
Sep 16 2015 1:03pm
Forum: E-Bike General Discussion
Topic: Built a BBS02 bike, mistake?
Replies: 39
Views: 3705

Re: Built a BBS02 bike, mistake?

For flat road riding, why deal with the complexities and wear issues of a mid drive. I don't believe It was ever intended for that. It's forte is the adaptability to using a vast array of gearing options for integration into more varied rides / riding situations. Nothing beats this type of drives a...