Worth it? (Honda NSR 125 boost chamber)

[BikerGuy95]

Anyone explain how useful one of these would be??

https://www.pmtuning.co.uk/Merchant2/merchant.mvc?Screen=PROD&Store_Code=PT&Product_Code=097-PMBB0002&Category_Code=003NSR

Cheers
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CBT Passed: 24th February 2011

[anthony_r6]

Just seems gimmicky to me. Also the description isn't amazingly clear or professional. Have you even got your NSR 125 yet?
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Ted : "Maybe he's agoraphobic."
Dougal : "Jack scared of fighting? I don't think so, Ted."

[Paulington]

Load of tosh, I've never seen one before on any engine and I doubt a lot of people have, there's generally a reason for that.

Secondly, it is only allowing more air in which will alter the fuel/air ratio which means the carburettor would need rejetting and probably run rough as it says it's more useful for lower RPM. This further increases my belief that it's tosh.

Also, thirdly, it's an NSR125, if you want to go faster, pass your test.
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"Four wheels move the body, two wheels move the soul."
Current Vehicles: '89 Kawasaki KDX200, '99 Yamaha XV535, '00 Honda ST1100 Pan-European, '08 Suzuki GSX-R1000, '08 Mitsubishi Lancer GS4 2.0 TDCi, '15 BMW 1 Series 116d Sport Turbo.
CBT: 27/08/08. Theory: 04/09/09. Module 1: 16/09/09. Module 2: 01/10/09.

[Nope.]

Boost bottles are just small sealed chambers that connect to the manifold of 2 stroke engines. They're fairly common in the gimmicky 'ped tuning community.

Essentially what happens in a 2t engine is that the engine sucks in petrol, the piston goes up but the petrol wants to keep flowing. This just meets the piston and then goes back into your carb essentially making your fuel mixture double meaning the engine is running rich. With a boost bottle the petrol flow back goes into the boost bottle and gets compressed. This then shoots back into the cylinder allowing for faster combustion and a quicker stroke.

They might slightly improve throttle response but its not worth the money/hassle of fitting them in my view.

At least, thats what im lead to believe. How true this is and how much of it is utter sh*t I dont know. Im sure Keith will be along soon to confirm.
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Former: Derbi GP1 50, Sachs XTC 125, Suzuki GSXR 400 GK73A, Kawasaki ZX7R, Suzuki DR250, Yamaha RD350
Current: 2011 Yamaha XT660Z Ténéré, 2003 Yamaha YZR-R1 5PW (In Build), 2009 Kawasaki ZZR1400

[Hardball]

Just focus on getting a tidy NSR for the moment
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Previous bikes:88 Honda CG 125,00 Aprilia RS 125,05 Honda NXR 125 Current bikes: NONE!!!!! >

[XkieranR]

This sounds alot like the powerband jokes people play on the newbs so I doubt that it actually does anything. Talking about tidy NSR's look at this beaut I just picked up https://www.ebay.co.uk/itm/ws/eBayISAPI.dll?ViewItem&item=110722579441&ssPageName=STRK:MEWAX:IT very happy with the price I paid

[N cee thirty]

Basically, it smooths out intake pulses (and back pressure pulses) in the inlet, it makes a reed valve 2 stroke smoother at low RPM and can help at high RPM as well.

thats wut the YEIS system on the rxs does,which is yamaha's own boost bottle
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[BikerGuy95]

basically a waste of money then. Thanks, i was just curious about them.... sounds like it's just gonna create a lot of cylinder trouble so f*ck that idea. hahaha

And also XkieranR I'm jealous of you! That's exactly the sort of thing im looking for!!! Computid, that's the sort of thing i meant!!
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CBT Passed: 24th February 2011