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  #11  
Old 06-16-2012, 07:57 AM
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Default Re: Silent Scream build thread

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Originally Posted by winzeracer View Post
But that extra 20lbs (5% of total weight) really gets me.
You know? The experience I related previously was with motorcycles using 2 Agni motors.
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  #12  
Old 06-22-2012, 07:00 PM
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Default Re: Silent Scream build thread

So I have decided to stay with DC for now. So the next debate begins

Soliton JR VS. Kelly PM regen ( http://kellycontroller.com/racing-co...gen-p-757.html )

I really like the relaibilty modern interface of the soliton but there is no regen.

The Kelly is not my favorite b/c they are just not great quality thus why I would way over size it and go with the 1000a even though I would only ever max out at 600a. But having an "engine break" may be a great advantage on the track.

What are your thoughts?
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  #13  
Old 06-25-2012, 07:32 PM
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Default Re: Silent Scream build thread

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Originally Posted by winzeracer View Post
So I have decided to stay with DC for now. So the next debate begins

Soliton JR VS. Kelly PM regen ( http://kellycontroller.com/racing-co...gen-p-757.html )

I really like the relaibilty modern interface of the soliton but there is no regen.

The Kelly is not my favorite b/c they are just not great quality thus why I would way over size it and go with the 1000a even though I would only ever max out at 600a. But having an "engine break" may be a great advantage on the track.

What are your thoughts?
This was answered in the controller section. See link if you are interested.
http://www.diyelectriccar.com/forums...lyi-75741.html

On another note the motor is on it's way from the UK!
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  #14  
Old 06-30-2012, 01:00 AM
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Default Re: Silent Scream build thread

New motor Pics! Serial #15
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File Type: jpg 20120629_143255.jpg (88.6 KB, 16 views)
File Type: jpg 20120629_143407.jpg (84.1 KB, 10 views)
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  #15  
Old 07-03-2012, 05:36 PM
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Default Re: Silent Scream build thread

Winzeracer,
What class of racing are you intending to run in with this kart ?
( Ignoring any problems with being allowed to run by controlling bodies !)
50 kW is a lot of power on a kart, right up there with the top 250 "gearbox" class, which is a rare class to find anywhere.
Most common kart classes are the 125cc "TaG" class who run at around 25 kW, so i dont imagine they will be too keen on you joining in ( highly unlikely anyway as they have very strict tech regulations which you cannot meet)
So, where will you race ?.. do you have an Ekart series in your area?,....or will this just be a fun ride ?
...and if it is just a fun ride, why are you intending to carry so much battery ?
Weight is a killer on a kart,..as you noted with your concern over the motor weight,... but here you are planning to haul around a truck load of CALB ???
Why didnt you look for a lighter pack chemistry ?
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  #16  
Old 07-03-2012, 05:44 PM
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Default Re: Silent Scream build thread

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Originally Posted by Karter2 View Post
Winzeracer,
What class of racing are you intending to run in with this kart ?
( Ignoring any problems with being allowed to run by controlling bodies !)
50 kW is a lot of power on a kart, right up there with the top 250 "gearbox" class, which is a rare class to find anywhere.
Most common kart classes are the 125cc "TaG" class who run at around 25 kW, so i dont imagine they will be too keen on you joining in ( highly unlikely anyway as they have very strict tech regulations which you cannot meet)
So, where will you race ?.. do you have an Ekart series in your area?,....or will this just be a fun ride ?
...and if it is just a fun ride, why are you intending to carry so much battery ?
Weight is a killer on a kart,..as you noted with your concern over the motor weight,... but here you are planning to haul around a truck load of CALB ???
Why didnt you look for a lighter pack chemistry ?
No CALBs that was my old design, new design is going to use turnigy nanotechs or hayin, both are lipoly. Not sure if it will fit into any class, it is really a research and learning experiment, for building an actual race car. I don't know of any ekart series in my area, but there might be one. Do you have an ekart? What are the specs?
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  #17  
Old 07-03-2012, 08:23 PM
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Unhappy Re: Silent Scream build thread

Ahh !.. Nanotec.. good move. ( better than the Haiyin too !)

no, no Ekart here, but several ICE karts , Ebikes, and several planned Ekarts !
The problem with Ekart is finding somewhere to race as tracks & clubs are reluctant to let "unusual" kars onto their tracks ( PL insurance etc) and also the battery run time issue.
Even with a lower powered Ekart ( 10-15 kW ) you still need a large and expensive pack of lipo to have a 20 min run time,
You also need access to a decent , reliable, power supply at the track and a fast charger ( more expense), to recharge.... or another pack to swap in, ... to get you back on the track within an hour or so.
All in, not a very appealing option when a $300 ICE motor and $10 of fuel can keep me racing all day at the track without having to haul batteries, chargers , etc around.
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  #18  
Old 07-03-2012, 10:39 PM
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Default Re: Silent Scream build thread

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Originally Posted by Karter2 View Post
All in, not a very appealing option when a $300 ICE motor and $10 of fuel can keep me racing all day at the track without having to haul batteries, chargers , etc around.
Yep, ICE racing is spendy, EV racing is just GREEDY! haha. This thing will be a beast when complete. It may just end up being for exhibitions, who knows. If you build it they will come right? I will have a quick charger for the track, and will rent a generator for the day when taking it out.


In other Silent Scream News...

I have been working on the motor mount design, and have a friend that works at a high end race shop with a CNC, so this will be one functional and cool looking mount, plan to have the new Winz E-Racer logo on it ( not yet in existence). It will be a great learning experience to go to the shop and help (watch) programming the CNC.
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  #19  
Old 07-05-2012, 12:13 AM
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Default Re: Silent Scream build thread

Preliminary motor mount with slot for chain tensioner. Still need to add holes to the outer ring for outer motor bolts. I am thinking 1/4" aluminuim, any reasons why I should go to 5/16" aluminium?
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  #20  
Old 07-14-2012, 06:09 PM
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Default Re: Silent Scream build thread

Here is the Video of the Motor Bracket programed into MasterCam, please ignore the Starbucks girl and terrible music in background

http://youtu.be/7Fn9XoknDPY

My friend Josh that is helping with the CNC work has a car that could be appricated even by EV Heads

http://youtu.be/7BcQqegUjtM

We will be cutting the bracket out on Thursday. I also ordered half of my Turnigy Nanotech 35C constant batteries so that I could start putting together one of the modules for one side of the car.
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Last edited by winzeracer; 07-18-2012 at 09:37 PM.
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