Drum charger?

Ausoi · January 2nd, 2017, 05:49 PM

Anyone seen/heard anything about this? It looks somewhat interesting for the Ninja 300.

http://www.morebikes.co.uk/33881/get...nt-cost-earth/

Triple Jim · January 2nd, 2017, 06:03 PM

I've read a little about this. It apparently works, but a Ninja 300 would require two of them, so not cheap, and they sure don't look very good.

Motofool · January 2nd, 2017, 06:08 PM

I cannot believe that those things would work as advertised and would be reliable as well.
All that exhaust heat seems to be too close to the legs of a Florida rider.

Mohawk · January 3rd, 2017, 02:15 AM

So according to the design, the exhaust does NOT flow to the IDC, its just a dead end pipe to carry exhaust pulses to the diaphragm. So heat transfer should not be a worry

It looks like any interesting idea, if they can bring it in for a cheap price. You rely on this technology to stop your car, using manifold pressure working on a large diaphragm to increase the power of your leg. They really do add a huge amount of effort from a very small pressure differential. So this should work as intended.

They would need to bring these in very cheaply, as a turbo setup would cost around $1500-2k in the aftermarket. Needing two of these with custom air pipework would need to cost less than approx $300 each, because you would need a modified exhaust as well !

If you imagine, if the diaphragm pump volume is 1.5-2x the cylinder volume, then you could get 1.5-2bar pressure. If it's not heated to much by the IDC then you won't need an airbox or intercooler, so minimum pipe length to the intake valve would be critical as would the pipe bore. If the diaphragm was able to react fast enough, I'd plum in BOTH headers to the implulse pipe, thus getting two pulses per intake cycle !

Be interesting to see where it goes.

Ausoi · January 3rd, 2017, 04:26 PM

We need a Guinea Pig asap!

JohnnyBravo · January 9th, 2017, 06:27 AM

January 2nd, 2017, 05:49 PM	#1
Ausoi ninjette.org member Name: Joshua Location: Loomis, CA Join Date: Jan 2012 Motorcycle(s): 2008 (Black) Kawasaki Ninja 250R Posts: 151	Drum charger? Anyone seen/heard anything about this? It looks somewhat interesting for the Ninja 300. http://www.morebikes.co.uk/33881/get...nt-cost-earth/
	1 out of 1 members found this post helpful.

January 2nd, 2017, 06:03 PM	#2
Triple Jim Guy Who Enjoys Riding Name: Jim Location: North Carolina Join Date: Jul 2016 Motorcycle(s): Ninja 250 Posts: A lot. MOTM - Oct '18, Aug '17, Aug '16	I've read a little about this. It apparently works, but a Ninja 300 would require two of them, so not cheap, and they sure don't look very good.
	1 out of 1 members found this post helpful.

January 2nd, 2017, 06:08 PM	#3
Motofool Daily Ninjette rider Name: Hernan Location: Florida Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot. MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16	I cannot believe that those things would work as advertised and would be reliable as well. All that exhaust heat seems to be too close to the legs of a Florida rider. __________________________________________________ *Motofool* *.................................Never ride faster than your guardian angel can fly* "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí

January 3rd, 2017, 04:26 PM	#5
Ausoi ninjette.org member Name: Joshua Location: Loomis, CA Join Date: Jan 2012 Motorcycle(s): 2008 (Black) Kawasaki Ninja 250R Posts: 151	We need a Guinea Pig asap!
	1 out of 1 members found this post helpful.

January 9th, 2017, 06:27 AM	#6
JohnnyBravo Certifiable nontundrum Name: Harper Location: NC Milkshake stand Join Date: Mar 2013 Motorcycle(s): 2013 SE NINJA 300 Posts: Too much. MOTM - Sep '13, Sep '16	__________________________________________________

January 3rd, 2017, 02:15 AM	#4
Mohawk ninjette.org guru Name: Chris Location: Bristol, UK Join Date: Feb 2016 Motorcycle(s): ZZR250, VFR800 Posts: 477	So according to the design, the exhaust does NOT flow to the IDC, its just a dead end pipe to carry exhaust pulses to the diaphragm. So heat transfer should not be a worry It looks like any interesting idea, if they can bring it in for a cheap price. You rely on this technology to stop your car, using manifold pressure working on a large diaphragm to increase the power of your leg. They really do add a huge amount of effort from a very small pressure differential. So this should work as intended. They would need to bring these in very cheaply, as a turbo setup would cost around $1500-2k in the aftermarket. Needing two of these with custom air pipework would need to cost less than approx $300 each, because you would need a modified exhaust as well ! If you imagine, if the diaphragm pump volume is 1.5-2x the cylinder volume, then you could get 1.5-2bar pressure. If it's not heated to much by the IDC then you won't need an airbox or intercooler, so minimum pipe length to the intake valve would be critical as would the pipe bore. If the diaphragm was able to react fast enough, I'd plum in BOTH headers to the implulse pipe, thus getting two pulses per intake cycle ! Be interesting to see where it goes.

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