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chambersp1

Joined:

Mar 03

Posts: 25

chambersp1 says:

ram air duct pipes

Just fitted a race fairing and all is going well so far........ But, a question? The ram air tubes on the bike as standard have "bottles" under them. Do I need to retain them for track use, or can some sort of flexi tube be used just to link the holes in the fairing and the tubes that pass through the frame? I guess the bottles are there to reduce direct air pressure and to keep an amount of semi pressised air at the intake. I've seen picures of track bikes with the standard "bottles" and with direct ducting. But od course I have no idea whay they opted for their chosen solution. Help.........

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  • Posted 9 years ago (30 September 2004 11:04)

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sportsbikeworld

Joined:

Aug 02

Posts: 19

sportsbikeworld says:

bottles....

....I have no idea why the road bikes have them either, but I biffed mine. All race 7's have direct tubes (available from people like QB Carbon who do GRP and carbon tubes). I have them, my race mates mave them, everyone has them! You can use the stock tubes, just pull off teh lower bottlely bit (only plugs in) and gaffer tape over the hole with black tank tape. An easy and cheap solution. I dont think it makes diddly squat to the BHP, but the airflow will be better. M

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  • Posted 9 years ago (30 September 2004 11:11)
2fast

Joined:

Aug 02

Posts: 1

2fast says:

bottles

I took mine off a couple of months ago and taped the holes up. makes no difference to the performance of my bike...dave

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  • Posted 9 years ago (01 October 2004 20:45)
aaharvey

Joined:

Feb 04

Posts: 5

aaharvey says:

Bottles

I think I remember reading somewhere that these bottles are present to stop the air resonating in the tube. From what I remember the person was saying that certain speeds/conditions can make the air move around in a funny way in the intake tube and create strange noises. They may also be present to try to minimise water entering the airbox (the bottles have holes in the bottom which would allow water to drain out). This could be complete rubbish of course and they might be there for complely different reasons

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  • Posted 9 years ago (12 October 2004 08:24)
SBWSmidsy

Joined:

Jan 04

Posts: 17

SBWSmidsy says:

Straight through ducts

You are correct about them being there to stop water entering the airbox. Although that is only really an issue for those of you that ride in the rain :-) You can run straight through ducts as Milo and others have suggested. Just check them now and agian for debris and water droplets etc after riding in poor conditions. There is actually a slight performance increase to be had with straight through ducts too as the air is pushed straight into the airbox without going round and up and down the collectors like they do on the standard ones. You can cut the collectors off the standard ones and fabricate a blanking plate from the spare plastic. Cheaper that carbon fibre replacemenst if money is tight.

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  • Posted 9 years ago (15 October 2004 10:29)

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