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Richard230 clicked Likes for this post: BMW i3 pack build? by Spaceweasel

3 Days Ago

Stevo clicked Likes for this post: BMW i3 pack build? by Spaceweasel

3 Days Ago

Spaceweasel replied to the thread BMW i3 pack build?.
" Holy cow it was difficult to find info about the cells. http://pushevs.com/2017/02/20/detail...-battery-cell/ "

3 Days Ago

Matej replied to the thread Enertrac 602 vs QS Motor 273.
"
Quote Originally Posted by Spaceweasel View Post
If you are concerned about power from your hub motors, you might look at this thread. http://elmoto.net/showthread.php?t=4485
The dual motors are very cool but I can only run a single if I want to use the stock swing arm. Plus I need the spoked version to keep the bike looking period-correct. Although the seller is actually local and he is selling the motors for a great price so it is really upsetting to have to pass up on them. If I had some sort of a modern-looking street bike, I would definitely buy them.


Quote Originally Posted by marcexec View Post
e.g. mine in a 400/600/900 RF frame: http://i1012.photobucket.com/albums/...ps65prsyae.jpg
Nice project. Is it an Enertrac 602? What voltage do you plan to run? I will most likely also be going with Leaf modules. Whenever you get a chance to ride it, please share your top speed. "

4 Days Ago

Richard230 clicked Likes for this post: Ludicrous idea time by Spaceweasel

4 Days Ago

Richard230 clicked Likes for this post: BMW i3 pack build? by Spaceweasel

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Stevo clicked Likes for this post: BMW i3 pack build? by Spaceweasel

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Spaceweasel clicked Likes for this post: Enertrac 602 vs QS Motor 273 by marcexec

4 Days Ago

marcexec replied to the thread Enertrac 602 vs QS Motor 273.
"
Quote Originally Posted by Stevo View Post
Hi... the main reason I chose not to use a hub motor is all the unsprung weight of the wheel. However, as long as you change the shock with a stiffer spring and heavier oil, you should be able to compensate.
The advantage is more space between your knees for batteries!
e.g. mine in a 400/600/900 RF frame: http://i1012.photobucket.com/albums/...ps65prsyae.jpg

(Still dialling the Kelly in atm, can't give you any performance details yet.) "

4 Days Ago

Spaceweasel replied to the thread Enertrac 602 vs QS Motor 273.
" If you are concerned about power from your hub motors, you might look at this thread. http://elmoto.net/showthread.php?t=4485 "

4 Days Ago

Spaceweasel replied to the thread Ludicrous idea time.
" Some de-ICEing projects go quicker than other.https://uploads.tapatalk-cdn.com/201...19520ccb5d.jpg


Sent from my iPhone using Tapatalk "

4 Days Ago

Stevo replied to the thread Enertrac 602 vs QS Motor 273.
" Hi... the main reason I chose not to use a hub motor is all the unsprung weight of the wheel. However, as long as you change the shock with a stiffer spring and heavier oil, you should be able to compensate.
The advantage is more space between your knees for batteries! "

5 Days Ago

milton replied to the thread AC-23 Motor not spinning with Curtis 1238 controller.
" I figured out the Domino throttle wiring. The wiring should be as attached. Now trying to workout the clutch. I took a short ride on the bike and it runs nice and smooth
Attachment 7404

https://youtu.be/QfcSciaQisA "

5 Days Ago

Matej created the thread Enertrac 602 vs QS Motor 273.
" Hello gentlemen,

Between the Enertrac 602 and the QS Motor 273, which would you choose for a motorcycle hub conversion and why?

The Enertrac is rated for 10kw and the QS Motor for 8kw. How accurate are these ratings and would the difference be drastically noticeable? While the Enertrac is more powerful, it also costs double what the QS Motor costs. I wonder if the extra 2kw is worth it or if I could get by on the cheaper motor.

I am primarily concerned with top speed. Acceleration is not a big deal as long as it does not impede traffic. I would like to be able to do short trips on the highway at 70-80mph for 5-10 minutes. Is that even possible with either motor? The motors would be used at 96-120V, depending on what max voltage they can sustain continuously.

The bike is a small 70's cruiser motorcycle and I will try to make it as light as possible. However, I know that at over 50mph aerodynamics become more of a concern than weight.

However, is Enertrac even still in business? I have sent a couple of emails to the address on their website and also messages to their page on Facebook over the past month. They have yet to reply to any of them.

Finally, are there any other hub motors worth looking into that could satisfy my goals?

Thank you for any input. "

6 Days Ago

Stevo replied to the thread BMW i3 pack build?.
" I think they have an awesome concept to have interchangeable battery tray chassis. They can design one stressed chassis batt tray and use it in any of the different models of vehicle they want to. BMW also is aware of the fact that the batteries have a much longer life after their use in an electric vehicle. Thats real good news for us DIY'ers. I cant wait to get my hands on a 124ahr 90 volt pack.
As a side thought.... if a battery pack improves every 2 to 4 years, then a top of the line sports coupe could get a new life with a new improved batt pack while the old ones get repurposed. The batteries still have great value because they can have an easy 10 years of life left in them. That means upgrades wont cost as much as you might think. BMW can make battery upgrades more affordable by letting their owners sell the old ones on an open market. Its like cattle auctions... you get what the market is offering for your batteries at the time you need or want new ones. This also makes the rest of the car that much more important to design and engineer to last longer. Other then seats and dash electronics, the car itself can be made to last someone's lifetime. It could be the last or only car that you ever need to buy. What a concept!! "

1 Week Ago

Stevo clicked Likes for this post: BMW i3 pack build? by Spaceweasel

1 Week Ago

Spaceweasel clicked Likes for this post: BMW i3 pack build? by tomdb

1 Week Ago

Spaceweasel replied to the thread BMW i3 pack build?.
" I agree that the modules look too big for use in a scooter/motorcycle, but the module set up might make them attractive for a car conversion. Any information on the actual dimensions of the individual modules? I haven't seen any.

Pictures of the pack next to the car show it fitting almost entirely between the wheels. the wheelbase is 101", the wheels themselves are 19". That leaves 6'8" of space. Round off for the bit at the end (charger? BMS?) and you have 6ish feet for 4 modules, or 18". The width of the i3 is 69", but there is quite a bit of structural space on each side of the car, so figure something less than 4.5'. Two modules widthwise means 27". Maybe 10" high, just visually estimated? I think 18"x27"x10" seems a bit large, but I don't think its bigger than that.

This video has a better look, and talks about being able to easily replace a cell at 1:00 in. But I think they are interchanging cell and module terminology.

https://www.youtube.com/watch?v=YZ9UpLkVJlo

I estimated the module voltage by dividing the number of cells into their stated voltage. From the pics it looks like the whole pack is set up as a series of 96 cells divided into 8 modules. The assembly video shows each module being assembled from two stacks of 6 cells, but there is reference in some of the literature to industrial adhesive securing the cells in the modules. "

1 Week Ago