Is this BS?

[calyx]

Found this today;

https://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=130335638737

Anyone has experience with alternator tuning?

Cheers.
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Boris - London

[Flip]

I wouldn't trust it.

[MarJay]

Ask yourself this question: If there was some magic way to make engines more efficient, don't you think that Motorcycle and car manufacturers would have done it already?

The thing is... Engine tuning is hard. Car and motorcycle manufacturers know what they are doing. This means that any performance gain is likely to be expensive, involve making the car or motorcycle illegal in some way (IE loud exhaust) or have reliability implications.

If there was an easy way to make any car or bike faster by doing something to the alternator, I'm certain that engineers in Hammatsu or Okinawa or Munich or Bologna would have done something about it by now.

Snake oil. If you can't see that then you're either stupid or need to learn more about engines.
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F; Cheap project: CBR900RR FireBlade
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[Kickstart]

Hi

Yes, BS.

The spark plugs are fed current from the coils, probably at at least 40000 volts.

All the best

Keith
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Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Wafer_Thin_Ham]

Certainly looks like BS to me.

Could always do a back to back dyno run if you fancy it. It's only £20 afterall.

If it works you'd see a power increase. More complete combustion would mean more power produced, so you can measure it.
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My Flickr

[Noxious89123]

This is at the bottom of that ad...

https://www013.upp.so-net.ne.jp/ebay/pic/board.jpg

Nuff said I think, pretty much sums up that entire page....
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'06 Honda CBR125RW-6 ~ '00 Honda CBR600F-Y ~ '07 Honda CBR600RR-7 ~ Bikeless
'53 Ford Ka 1.3 ~ '03 Vauxhall Astra SRi 1.8 ~ '52 Vauxhall Astra SRi 2.2 ~ '53 Vauxhall Astra GSi

[The Shaggy D.A.]

Probably just a capacitor. You can eliminate the battery with one, and it will give better running if you've got an old bike with a knackered battery, but if your setup is already running the bike ok it won't make a difference.

[edit] with the caveat that you have a kick start and none of that new fangled computermabob or fuel injection jiggery pokery nonsense.
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Chances are quite high you are not in my Monkeysphere, and I don't care about you. Don't take it personally.
Currently : Royal Enfield 350 Meteor
Previously : CB100N > CB250RS > XJ900F > GT550 > GPZ750R/1000RX > AJS M16 > R100RT > Bullet 500 > CB500 > LS650P > Bullet Electra X & YBR125 > Bullet 350 "Superstar" & YBR125 Custom > Royal Enfield Classic 500 Despatch Limited Edition (28 of 200) & CB Two-Fifty Nighthawk > ER5

[The Artist]

As well as that piece of shite, they also sell this

Another Ebay Link

[MattHirst]

It's a flux capacitor
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It's all fun and games until someone gets hurt, then it's bloody hilarious!!!

[Flip]

[Paulington]

[baldy]

Doesn't the coils get power from a separate part of the stator windings that is separate to the battery? Also, how can something that couples to the battery only make any difference to the ignition system?

It's like that thing that was on ebay that plugged into a lighter socket and made your car faster. Every one knows that one of those computer fan super chargers work the best.

Someone should buy one, fit it and get their bike dyno'd. I can bet that it will do absolutely nothing apart from drain the battery when not in use.

[baldy]

Plus the coils are fed with ac voltage i think, which would probably fry that little plastic tube.
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One day i will rule the world, just not today.

[calyx]

Flux capacitor is fluxing
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Boris - London

[Kickstart]

[baldy]

But a lot of smaller bikes can run without a battery or a charging system, like my xr400.

I can't understand the logic behind this gadget, wouldn't it just be shorting the battery out?

How can it do anything when it is only connected to the battery and the only possible thing it can do is short it?
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One day i will rule the world, just not today.

[Alexio]

What I'm the most confused about is this "unstable ignition spark" business. Surely if a spark plug sparks... it sparks. If it causes just a few atoms to combust it has started what is a runaway exothermic chain reaction until all fuel has been burned? So how the hell would a spark with possibly slightly less energy (but remember, still a spark) affect compression? I think what they mean by this is that the explosion will start off and happen more slowly with a smaller spark........


That... doesn't sound right?

And no, it wouldn't short the battery... it would only do that if this device was the path of least resistance. It isn't, so while some electrons will flow through it, normal function is maintained. However, I would imagine that when it comes to needing to draw more power, it would be there to provide it.
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will never give up his CG. I look at my fuel gauge more as a progress bar than a fuel gauge.
G: With my GSXR I do often effectively use it as a scooter with a clutch in town.
ms51ves3: why does it need 500 miles? Are you teaching it how to be a piston?

[Fortuna]

[iooi]

[Kickstart]

[Fortuna]

Didn't want to confuse him by throwing CDi's into the equation. My main point was about the pickup which nearly all big bikes do have.

[sickpup]

It's a large capacitor.

More commonly seen on RC car batteries. The idea behind it is actually sound as I understand it but virtually useless in practice on an IC vehicle.

Basically the capacitor is there for high power surges. In theory if you throttle on really hard especially with a fuel injected vehicle the battery 'may' not be able to supply power quick enough reducing initial thrust. In this instance the capacitor (if charged) will give the extra power needed to power everything. In practice this doesn't really affect anything and definitely wouldn't give any more peak BHP.

[Kickstart]