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Archive through April 30, 2019Shoggin30 04-30-19  01:05 am
         

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Stevel
Posted on Tuesday, April 30, 2019 - 03:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Here is some basics.
i Coulomb (unit of charge) is = to 1.6 x 10 raised to the 19 power or a bunch.
1 Coulomb passing a single point in one second = i Ampere
Power in watts = voltage x current (amperes)
i HP = 745.7 watts
A 32 ampere motorcycle alternator is about 85% efficient. So, 15 volts x 32 amperes x 1.15 = 517 watts max power or .7 HP (power draw from the crankshaft.

So if your motor cycle load is only 250 watts you only need .33 HP. That leaves an extra .37 HP to drive the rear tire......if you want it or saves the fuel equivalent if you don't and (this is the kicker) it saves 260 watts of heat because of the second law of thermodynamics that states all generated energy not consumed results in heat. That heat,not sufficiently dissipated (cooled), will overheat the stator coils and kill them. So, to summarize, a series regulator that literally opens up the stator coil circuits when not needed is better than the shunt regulator that dumps the excess power to ground.
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Shoggin
Posted on Tuesday, April 30, 2019 - 12:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hey! I'm impressed! If your figures are right, I was way close with my rough assumptions. Woohoo!

You have a great point about heat, the hotter a charging system gets, the less efficient it is, so a series VR will save even more heat by being more efficient and saving more heat so it can be more efficient, saving more... uh ya...

And even though the HP number is still crazy small, we're talking BHP at the crank not RWHP: ) Repeatable dyno tests are within 2-3 RWHP (5-7BHP) so using Stevel's numbers, the HP you are saving with the VR change is still approximately 10 times smaller than you could even test on a standard dyno.

I like the discussion on theory though, fun times for a dork like me.
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Fresnobuell
Posted on Tuesday, April 30, 2019 - 01:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'd be better off losing 10 pounds for about a 1.5 HP gain. I guess that would be RWHP to boot!
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Shoggin
Posted on Tuesday, April 30, 2019 - 03:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Or add stickers!
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Fresnobuell
Posted on Tuesday, April 30, 2019 - 03:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Stickers add weight and drag...
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Tab22092
Posted on Thursday, May 02, 2019 - 12:08 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Soooo got the stator in the mail today. Looks like crap honestly. Is it normal to see a but of epoxy flaking off already? In addition it looks like half the magnets on the post are good (shiny metal) the other half are covered with the green material beneath it? I tried to upload pictures but its saying to shrink pics and idk how to do all that.
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Willmrx
Posted on Thursday, May 02, 2019 - 01:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)


mjj

khgfffg


This is a Rick's stator that I just got, does yours look like this?
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Tab22092
Posted on Thursday, May 02, 2019 - 08:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Yes but my crackingseems to be a bit worse. And the metal ends like i said half are metal and half are covered by theat green computer chip material like they have underneath them.
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Tab22092
Posted on Thursday, May 02, 2019 - 10:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Additionally, mine has no red wires coming off of it. Only black.
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Joe7bros
Posted on Thursday, May 02, 2019 - 12:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I want to see the old one when you pull it
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Fresnobuell
Posted on Thursday, May 02, 2019 - 01:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)


quote:

I want to see the old one when you pull it




+1
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Shoggin
Posted on Thursday, May 02, 2019 - 02:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thats what she said
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Tab22092
Posted on Thursday, May 02, 2019 - 10:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I’ll take a pic of it but im still not sure how to “shrink” pictures. Still have to order the rotor. Hope to have it done by the end of the month.
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Fresnobuell
Posted on Thursday, May 02, 2019 - 11:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)


quote:

I’ll take a pic of it but im still not sure how to “shrink” pictures.




Use your Snipping Tool app (windows utility) to "snip" anything on your screen. Save it. Upload it. Works awesome.

This icon:



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Tab22092
Posted on Wednesday, May 08, 2019 - 04:48 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ok so i got the new stator all put in and no the tape for the wires came off and i can’t tell what number the wires go and where fml. Any way of figuring this out?
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Terrys1980
Posted on Wednesday, May 08, 2019 - 05:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hook it up and run it, if voltage isn't right swap two legs. You can't mess anything up.
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Tab22092
Posted on Wednesday, May 15, 2019 - 02:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Got it all bolted up and the bike won’t even turn over and fire. Its like i’m not even hitting the starter button. Any ideas?
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Shoggin
Posted on Thursday, May 16, 2019 - 11:09 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Run switch on?
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Stimbrell
Posted on Thursday, May 16, 2019 - 12:13 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Check fuses would be my first move.
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