WR450 Altenator

[Sebastiaan]

Hey,

I'm having some problems with the WR450 alternator, not giving me enough power... http://fsae.com/groupee_common/emoticons/icon_confused.gif Is there anyone who also had/has this problem and how did you solve it.

Did you save power, did you put in a very large battery or did you use a different alternator??

[Igor]

If no aftermarket stator upgrade kit is available, you could always build a switch mode regulator. Those are much more efficient than the standard linear regulator.
You will need a good electronics guy though, as designing high power switch mode converters is not trivial stuff.

Igor

[Big Bird]

Well, we got through a couple of comps with a big battery! Bit risky though.

Where are you located Sebastiaan? We get our coils rewound here in Oz - couple of places around that do it.

cheers,

[Sebastiaan]

I'm from the Delft team from Holland. I thought of rewinding too, but didn't have a look into it yet.
How many amps did you get after the rewinding?

[BryanH]

13A.
Betta Bikes Unit 6/10A Cottage Lane
Hackam South Australia +618384 3550
www.bettabikes.com.au (http://www.bettabikes.com.au)
Steve Warnes ( he's cool, knows about fsae)

[Sebastiaan]

thanks

[Ye Olde Blue]

Do you have links to rewinding companies near Southwest Virginia? I am having the exact same problem with my WR450 stator assembly!

[bob.paasch]

Originally posted by Ye Olde Blue:
Do you have links to rewinding companies near Southwest Virginia? I am having the exact same problem with my WR450 stator assembly!

A Ricky Stator (www.rickystator.com) will get you a drop-in 100 watts. That should be enough to run your ECU, FI and cooling fan.

[Ye Olde Blue]

Originally posted by rp:
A Ricky Stator (www.rickystator.com) will get you a drop-in 100 watts. That should be enough to run your ECU, FI and cooling fan.

We have a 150W stator from Electrosport, yet we still are losing power. No one cam find where the power is going.

[Ye Olde Blue]

We have a 150W stator from Electrosport, yet we still seem to be losing power at all times.

[bob.paasch]

Originally posted by Ye Olde Blue:
We have a 150W stator from Electrosport, yet we still seem to be losing power at all times.

I'd venture you have a consumption problem, not an output problem. You are going to have a very hard time fitting enough wire onto the stator to make more than 150 watts.

One of the (many) challenges of running a 450 dirt single is you have to be very careful with your power budget. You can't run all the things you can off a 600 street bike engine.