Search found 425 matches

by The Toecutter
Jul 16 2019 12:01am
Forum: E-Bike General Discussion
Topic: First time I'd ever ridden an electric bike
Replies: 4
Views: 643

Re: First time I'd ever ridden an electric bike

Once you ride an ebike, you never want to pedal a regular bicycle again! That is not true in my case. I do prefer the fitness benefits inherent in this. My design will require me to be able to pedal it with the motor disabled, without it being too much more burdensome than it would otherwise be unm...
by The Toecutter
Jul 13 2019 11:14pm
Forum: E-Bike General Discussion
Topic: First time I'd ever ridden an electric bike
Replies: 4
Views: 643

First time I'd ever ridden an electric bike

Today I met a friend who had ordered two front-suspension electric fatbikes. They used Bafang hub motors and cadence sensors, with a twist throttle that had a switch that allows one to choose PAS or throttle operation. I was told the system was 750W. The battery is 48V 13AH. It was a 7 speed in the ...
by The Toecutter
Jul 12 2019 11:31pm
Forum: E-Bike Technical
Topic: 2019 16" moped/scooter tire pop-off: which is the most puncture proof?
Replies: 32
Views: 3166

Re: 2019 16" moped/scooter tire pop-off: which is the most puncture proof?

Vee rubber 2.0 x 20: massive friction, likely due to the BMX/offroad pattern. Lycra dudes blow past me hard. Mitas MC2 2.25 x 20: Better than the above, despite being heavier, likely due to pattern. Lycra dudes blow past me, but not as fast. Hutchinson Spherus 2.25 x 20: This puts me 1:1 with the l...
by The Toecutter
Jun 30 2019 2:16pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1589
Views: 223871

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

neptronix wrote:
Jun 20 2019 4:36pm

I bought another motor from leafbike recently, a 3T 1000W ( 30mm wide ) hub. Will report on that later.
I'm very curious to hear back with regard to whether or not it is easier to pedal than the 1500W version with the drive system disabled, and if so, by how much.
by The Toecutter
Jun 30 2019 2:01pm
Forum: E-Bike Technical
Topic: velomobile suspension, advice needed. Build thread
Replies: 50
Views: 8638

Re: velomobile suspension, advice needed. Build thread

What would be maximum didn't you can get through bike path gates ? I would like it as wide as I can. My KMX tadpole trike is 39" wide from front wheel to front wheel. There are some bike paths where I only have about 1-2" of clearance on each side of the bollards. I'd recommend going no wider than ...
by The Toecutter
Jun 30 2019 1:51pm
Forum: E-Bike General Discussion
Topic: Deal of the year
Replies: 7
Views: 875

Re: Deal of the year

Was this trike for sale in Missouri by chance? If so, it may have been the same one I saw on craigslist for $250. I'd recommend replacing the stock rims with something of higher quality, or else you will be breaking a lot of spokes. This will require building a new wheel off of the KMX proprietary f...
by The Toecutter
Jun 29 2019 2:13pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Custom KMX recumbent trike with QS205
Replies: 105
Views: 9422

Re: Custom KMX recumbent trike with QS205

adam333 wrote:
Jun 09 2019 9:19pm
Hmm... your power consumption is very high. But again, the trike look fairly heavy.

I would give it a try with slick tire.
From the info Neptronix has provided on these forums, the Mitas MC2 looks like an excellent choice. It is claimed to be low rolling resistance and also rated for 100 km/h.
by The Toecutter
Jun 28 2019 3:24am
Forum: Items for Sale - New
Topic: KMX Trike Front Suspension
Replies: 201
Views: 36415

Re: KMX Trike Front Suspension

The nylock nut most likely have a problem. It should have work even without the loctite. If you have the "K spindle" the replacement bolt is 3/8-16 x 1 1/2" (92949A628 Mcmaster-Carr) If you have the "old spindle" the replacement bolt is 3/8-16 x 1 3/8" (92949A868 Mcmaster-Carr) In both case the nyl...
by The Toecutter
Jun 28 2019 1:04am
Forum: Items for Sale - New
Topic: KMX Trike Front Suspension
Replies: 201
Views: 36415

Re: KMX Trike Front Suspension

One minor problem that I've come across: the bolt that mounts the suspension block to the steering spindle keeps coming loose every 3,000 miles or so. I followed the instructions precisely including use of Loctite, and tightened the nylock nut in all the way with the suspension block flush against t...
by The Toecutter
May 22 2019 8:59pm
Forum: E-Bike Technical
Topic: 2019 16" moped/scooter tire pop-off: which is the most puncture proof?
Replies: 32
Views: 3166

Re: 2019 16" moped/scooter tire pop-off: which is the most puncture proof?

No, and i know they're not going to know. When i switched to the MC2 from the crappy 2.0 vee rubber thing, the watts did climb, but i can't give you an exact figure on how much they climbed. I couldn't get a Crr value for this tire, but I did find figures for a different Vee Rubber tire: https://ww...
by The Toecutter
May 22 2019 8:36pm
Forum: E-Bike Technical
Topic: 2019 16" moped/scooter tire pop-off: which is the most puncture proof?
Replies: 32
Views: 3166

Re: 2019 16" moped/scooter tire pop-off: which is the most puncture proof?

Next up is a Mitas MC2, which was recommended to me by treatland in an email to their sales team. I was told that this had low rolling resistance and that solar vehicle teams loved it. mitas-MC2.jpg This is actually a very impressive tire, and yes... it is hard, so perhaps the low rolling friction ...
by The Toecutter
May 22 2019 8:09pm
Forum: E-Bike General Discussion
Topic: An idea for creating our own tire database
Replies: 9
Views: 789

Re: An idea for creating our own tire database

Yeah a flatless tire would be great, just got a flat today and yet another thorn-proof tube is garbaged as the valve broke. Since we are e-biking, then motorcycle rims, motorcycle tubes and motorcycle tires could be an alternative for some, while motorcycle tires and tubes may fight on a bicycle ri...
by The Toecutter
May 22 2019 4:50pm
Forum: E-Bike General Discussion
Topic: An idea for creating our own tire database
Replies: 9
Views: 789

Re: An idea for creating our own tire database

Also, on the subject of this topic, the following link is VERY useful:

https://www.bicyclerollingresistance.com/
by The Toecutter
May 22 2019 2:10pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1589
Views: 223871

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

I don't know of any specialized hubs for this, but google 'disc brake sprocket adapter' and you will find plenty of goodies. Such as the one below. recumpence also has some very beautiful CNC porn adapters selling for something like ~$80 last time i checked. You have to PM him to get one. Thanks fo...
by The Toecutter
May 21 2019 11:25pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1589
Views: 223871

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

My concern with such a crazy power to weight ratio is that 50kw is enough power to go perhaps >150mph and hitting an uneven surface could send such a light vehicle flying. These things have happened in salt flats speed runs. A valid concern. The gearing options currently available for bicycle compo...
by The Toecutter
May 21 2019 11:01pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1589
Views: 223871

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

A 60mph streamliner coffin might be more resource-efficient than a car, but it's almost as hostile and inconsiderate. Only if the operator wants to place themselves at grave risk for hitting a pedestrian. In a 4,000 lb car, there's little risk of physical harm to the driver if colliding with a pede...
by The Toecutter
May 21 2019 2:16am
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1589
Views: 223871

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

50 horsepower in a velomobile sounds like a very cool way to die :lol: 8) Only if you wreck. The other vehicles on the roads with orders of magnitude more mass are the biggest risk factors pertaining to this. Racing kart operators safely push their machines to the limits all the time. There's no re...
by The Toecutter
May 20 2019 8:46pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1589
Views: 223871

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Tires and chassis that would allow an e-velomobile to weigh less than 100 lbs would not tolerate that kind of acceleration. You have more than a little bit of sci-fi technology to wait for, if that's what you're after. Not just a magic motor and magic batteries. A chassis and body could be made to ...
by The Toecutter
May 19 2019 5:03pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1589
Views: 223871

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

I keep getting 'let me get back to you' or 'we are not sure if we can do that' type responses for some months now. My guess is that it is not going to happen. Damn that sucks. It's sad that this is about the best motor on the market available at the hobbyist level. Thre's so much potential for some...
by The Toecutter
May 03 2019 12:52am
Forum: Items for Sale - New
Topic: KMX Trike Front Suspension
Replies: 201
Views: 36415

Re: KMX Trike Front Suspension

I currently have 20" wheels up front using Schwalbe Marathon Greenguard 1.5" thick tires and a 26" wheel in the rear using a Schwalbe Marathon Plus Tour 1.5" thick in the rear. I know the suspension was designed to work with smaller wheels, but do you have any data on whether it can perform adequate...
by The Toecutter
May 03 2019 12:40am
Forum: E-Bike Build Threads / Photos & Video
Topic: KMX Electric Trike
Replies: 8
Views: 1131

Re: KMX Electric Trike

The ride height is 8 5/16 high. Thanks! Mine has a ground clearance currently at 5 and 1/8". I'm using 20" wheels in the front with a 26" wheel in the back, with 1.5" thick Schwalbe Marathon Greenguard tires up front and a 1.5" thick Schwalbe Marathon Plus Tour in the rear, running adam333's front ...
by The Toecutter
May 02 2019 1:44am
Forum: E-Bike Technical
Topic: The SB Cruiser: Amberwolf&Dogman's 2WD CargoTrike&DogCarrier
Replies: 1011
Views: 159431

Re: The SB Cruiser: Amberwolf&Dogman's 2WD CargoTrike&DogCarrier

I'm glad you weren't badly hurt in the wreck. You should consider redesigning the canopy and installing a windshield to be less vulnerable to crosswinds. As tall as it is with as much lift as it's generating from the lip of the existing canopy, the moment produced by errant crosswinds is truly massi...
by The Toecutter
May 01 2019 12:50am
Forum: E-Bike Build Threads / Photos & Video
Topic: Custom KMX recumbent trike with QS205
Replies: 105
Views: 9422

Re: Custom KMX recumbent trike with QS205

At what speed did you simulate 300-500 km range? With your current setup, the drag is probably horrendous. CdA is probably more than 0.5 m^2. Those tires probably aren't very efficient with regard to Crr as well. That is a huge battery pack though. There was a time where lead acid battery powered ca...
by The Toecutter
May 01 2019 12:34am
Forum: E-Bike General Discussion
Topic: Show me your electric velomobile.
Replies: 119
Views: 20389

Re: Show me your electric velomobile.

Starting with an old Milan is kind of cheating, don't you think? :D Nah. Most of the world's best hot rod builders can make some very fast cars, yet they know nothing about aerodynamics and it is never even a thought nor is efficiency a concern to them, even though the possibility exists for them t...
by The Toecutter
Apr 29 2019 12:45pm
Forum: E-Bike General Discussion
Topic: Show me your electric velomobile.
Replies: 119
Views: 20389

Re: Show me your electric velomobile.

Impressive, isn't it? On my first ride after the conversion, I could hardly believe the low consumption figures. It is. I remember no shortage of people telling me that the low consumption figures or range I was looking for couldn't be done in a sub 100 lb vehicle. You've gone and done even better ...