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Re: Regen for the dummies ?

>>>Can this damage the battery?
Maybe the BMS can be overloaded, since the charge Mosfets are just dimensioned for charging with low current.
by avandalen
Tue May 16, 2017 3:33 am
 
Forum: Motor Technology
Topic: Regen for the dummies ?
Replies: 3
Views: 247

Re: My new Maxun One solar bike

Here is a video of the Maxun One solar bike, that shows the motorpower and solarpower at a speed of about 25 km/h.
Image

by avandalen
Mon Sep 14, 2015 7:03 am
 
Forum: E-Bike Photos & Video
Topic: My new Maxun One solar bike
Replies: 44
Views: 4860

Re: My new Maxun One solar bike

Ice rider, It is very easy to overlook details when comparing what appear to be similar things but the devil is always in the details. Your trike has the panels overhead so you are not going to create a shadow over them with your body. Just one cell covered by shadow will render that whole panel in...
by avandalen
Wed Mar 25, 2015 4:07 am
 
Forum: E-Bike Photos & Video
Topic: My new Maxun One solar bike
Replies: 44
Views: 4860

Re: My new Maxun One solar bike

No, I am saying that his 200W of panel are producing ~100W and that will get him 16.7kph with NO drain on his battery. And I am saying that those numbers are pretty good because my terratrike cruiser goes 7-12 mph with a single 100W panel (producing say ~60W) and no battery at all. And yes, with a ...
by avandalen
Wed Mar 25, 2015 3:54 am
 
Forum: E-Bike Photos & Video
Topic: My new Maxun One solar bike
Replies: 44
Views: 4860

Re: My new Maxun One solar bike

The solar panels on the bike are far less than required to propel the bike along at the claimed speed. I posted a third party video to demonstrate that. Actually, he is sporting between 150 and 200W of panels. Around noon and in summer, say he can generate 100W solar. With 100 kg of bike and rider ...
by avandalen
Wed Mar 25, 2015 3:40 am
 
Forum: E-Bike Photos & Video
Topic: My new Maxun One solar bike
Replies: 44
Views: 4860

Re: My new Maxun One solar bike

lester12483 wrote:Cool solar bike. Well done sir!!

How much did it cost you to build?

The only thing I can say is that it was very expensive.
by avandalen
Wed Mar 25, 2015 3:20 am
 
Forum: E-Bike Photos & Video
Topic: My new Maxun One solar bike
Replies: 44
Views: 4860

Re: My new Maxun One solar bike

This thing looks irresponsibly dangerous. Things like this give joe average the feeling that the world energy crisis can be solved with a few solar panels. In recent times heavily government funded rebates and feed in tariffs in Australia have seen a boom in grid connected solar. People think they ...
by avandalen
Wed Mar 25, 2015 3:14 am
 
Forum: E-Bike Photos & Video
Topic: My new Maxun One solar bike
Replies: 44
Views: 4860

Re: My new Maxun One solar bike

mushymelon wrote:This thing looks irresponsibly dangerous.

Yes I hear this often :? . But do you know what's really dangerous? Riding in a 1200kg car.
by avandalen
Tue Mar 24, 2015 3:52 pm
 
Forum: E-Bike Photos & Video
Topic: My new Maxun One solar bike
Replies: 44
Views: 4860

Re: My new Maxun One solar bike

The unfortunate thing is people will believe it actually works. Some basic maths will tell you the battery and pedalling are doing all the work. For a realistic demonstration of what the panels might be adding to the equation see this video by Terry Hope. https://m.youtube.com/watch?v=go9vbhrXoEU N...
by avandalen
Tue Mar 24, 2015 3:44 pm
 
Forum: E-Bike Photos & Video
Topic: My new Maxun One solar bike
Replies: 44
Views: 4860

Re: My new Maxun One solar bike

melodious wrote:Your next step is to put it on a recumbent or better yet a velomobile :idea:

How many solar watts are you able to provide? The picture looks like your making good speed.


Sometimes 200W, but normally 180W, in the afternoon 150W or less at full sunlight.
by avandalen
Tue Mar 24, 2015 3:37 pm
 
Forum: E-Bike Photos & Video
Topic: My new Maxun One solar bike
Replies: 44
Views: 4860

Re: My new Maxun One solar bike

TSAR wrote:With the right angle and a strong enough gust, this solar project may turn into a wind projectile.
Maybe you could use it as a sail...

There is no noticeable wind drag.
by avandalen
Tue Mar 24, 2015 3:34 pm
 
Forum: E-Bike Photos & Video
Topic: My new Maxun One solar bike
Replies: 44
Views: 4860

Re: My new Maxun One solar bike

agniusm wrote:I went through the FAQ and have a question. Whats the invention on this thing?


The design is patented, the solar bike by itself is not new.
by avandalen
Tue Mar 24, 2015 3:31 pm
 
Forum: E-Bike Photos & Video
Topic: My new Maxun One solar bike
Replies: 44
Views: 4860

Re: My new Maxun One solar bike

Ypedal wrote:Hmmm.. interesting.. getting a leg over without kicking the rear panel must be tricky. .. could also double up as a portable picnic table ! :P

>>>getting a leg over without kicking the rear panel must be tricky
Yes, especially at my age :wink:
by avandalen
Tue Mar 24, 2015 3:30 pm
 
Forum: E-Bike Photos & Video
Topic: My new Maxun One solar bike
Replies: 44
Views: 4860

Re: My new Maxun One solar bike

Nice work avan. That's pretty impressive. Ever crash into anything and loose a panel ? How small a battery you have on that thing ? Also over here in the states we have issues when we ride in our underwear. Glad your country is more liberal. ( I kid I kid) Thanks for sharing. >>> Ever crash into an...
by avandalen
Tue Mar 24, 2015 3:28 pm
 
Forum: E-Bike Photos & Video
Topic: My new Maxun One solar bike
Replies: 44
Views: 4860

Re: Adding turns to a motor cyclone motor

No plasma yet! I added four turns on to each stator tooth without too much difficulty. Didn't rewind, just added to the existing turns since there was enough space. The kv hasn't dropped as much as I thought, about 10%. There must be more turns on each tooth than I thought. The no load current has ...
by avandalen
Tue Mar 24, 2015 7:38 am
 
Forum: Motor Technology
Topic: Adding turns to a cyclone motor
Replies: 17
Views: 1725

Re: Astro 3205 motor on Cyclone planetary gear

the Astro 3205 will make noise but its like a TURBO JET ENGINE spooling up and no where near the unpleasant sound of a cyclone That sounds quite unpleasant to me Mike, and I can only imagine how much worse the Cyclone gear reduction will make it. Avandalen, You're oversimplifying the efficiency gai...
by avandalen
Tue Mar 24, 2015 7:02 am
 
Forum: Motor Technology
Topic: Astro 3205 motor on Cyclone planetary gear
Replies: 10
Views: 1453

Re: Cyclone ebike motor efficiency 74% instead of 97%

I found my old notes where I had measured the phase resistances of two different Cyclone motors, both of them the standalone (w/o internal controller) motors that have the same characteristics as the "500 watt" motor, but without the internal controller. The "500 watt" motor loo...
by avandalen
Tue Mar 24, 2015 5:38 am
 
Forum: Motor Technology
Topic: Cyclone ebike motor efficiency 97%
Replies: 28
Views: 4396

Re: Astro 3205 motor on Cyclone planetary gear

Okay so to the crank (chainring) you have sufficient reduction for 12S 7500 RPM down to 75 RPM (theoretical) RPM... which wind is your 3205? What kV? On that note, it should work well enough but... I caution you not to push too much power into the cyclone gearbox... maybe 1.5X and perhaps 2.0 but I...
by avandalen
Mon Mar 23, 2015 2:51 pm
 
Forum: Motor Technology
Topic: Astro 3205 motor on Cyclone planetary gear
Replies: 10
Views: 1453

Re: Mid drive motor with spur gear instead of chain

I finally will use a gear, the gear ratio = 95t/12t = 7,917. This is much larger than can be achieved with a chain or belt.
by avandalen
Sun Mar 22, 2015 2:57 pm
 
Forum: E-Bike Non-hub Motor Drives
Topic: Mid drive motor with spur gear instead of chain
Replies: 25
Views: 6150

Re: Astro 3205 motor on Cyclone planetary gear

What is the total reduction of the gearbox your intending for use with the 3205? What is the output gear and the driven sprocket/gear on the freewheeling cranks? My concern is cyclone motors run about 3K RPM and for the 32XX series Astro motors they need to maintain about 7500 for 90-94% efficiency...
by avandalen
Sun Mar 22, 2015 2:32 pm
 
Forum: Motor Technology
Topic: Astro 3205 motor on Cyclone planetary gear
Replies: 10
Views: 1453

Re: drive change cyclone kit

Hi K Harvey, I want to calculate the efficiency of the Cyclone motor and gearbox because there is no accurate data available. If you have the Cyclone motor, can you measure the winding resistance and the motor constant V/rpm for me? See here: http://endless-sphere.com/forums/viewtopic.php?f=30&t...
by avandalen
Sat Mar 21, 2015 5:58 am
 
Forum: E-Bike Non-hub Motor Drives
Topic: drive change cyclone kit
Replies: 2
Views: 455

Re: Astro 3205 motor on Cyclone planetary gear

spinningmagnets wrote:Here are some pics and links that might help you find the answer

http://endless-sphere.com/forums/viewtopic.php?f=16&t=62589

I have seen these pics but I need a much larger image, that I can use to do measurements on it.
by avandalen
Sun Mar 08, 2015 12:14 pm
 
Forum: Motor Technology
Topic: Astro 3205 motor on Cyclone planetary gear
Replies: 10
Views: 1453

Astro 3205 motor on Cyclone planetary gear

Because the Cyclone mid-drive motor has a low efficiency, see http://endless-sphere.com/forums/viewtopic.php?f=30&t=66278 , I want to use a 3205 Astro motor instead. The Astro 3205 motor has an efficiency of 90% to 95%; I have checked this with the motor parameters. The Cyclone planetary gear is...
by avandalen
Sun Mar 08, 2015 12:00 pm
 
Forum: Motor Technology
Topic: Astro 3205 motor on Cyclone planetary gear
Replies: 10
Views: 1453

Re: Cyclone ebike motor efficiency 74% instead of 97%

Bill Bushnell has done measurements, the efficiency is a poor 74% instead of 97%: http://mrbill.homeip.net/albums/cyclone ... 60_eff.pdf if you read on the bottom of bills page he estimates that the motor to rear wheel losses where he measures the power is 13% i think this is quite optimistic for a...
by avandalen
Sun Mar 08, 2015 11:21 am
 
Forum: Motor Technology
Topic: Cyclone ebike motor efficiency 97%
Replies: 28
Views: 4396

Re: Mid drive motor with spur gear instead of chain

Polychain is available in 5mm pitch too. That pitch can go down to 12 tooth IIRC. One other item related to power handling with toothed belts is tooth engagement. If you add an idler wheel to increase the amount of belt wrap p around the small pulley, you will increase torque handling tremendously....
by avandalen
Sat Mar 07, 2015 5:54 am
 
Forum: E-Bike Non-hub Motor Drives
Topic: Mid drive motor with spur gear instead of chain
Replies: 25
Views: 6150
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