Funny whirling/ noise

quik_d · Could Be A Chat Bot Joined: 18 Mar 2005 Karma :

hi there i was wondering if anyone can shed some light on this. Since it has been getting really cold (last week or so) on my journeys to work i sometimes get this high pitch whirring noise on the bike, well it sounds exactly like an old kettle whilstling when its boiling. It only does it on the A3 when i'm doing a decent speed. If i slow down it continues to make a nise until i slow to about 30, then it just stops, almost like a switch.

It doesn't happen everyday, but is becomming more frequent and i'm slightly unnerved as to what it is!

Plenty of antifreeze in the radiator/water system. I have thought its maybe the themastat playing up and setting the fan off, its definately coming from the engine/front of the bike

Honda Bros 400 to anyone who doesn't know already.

PLEASE HELP!!!
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Lee_367 · Brolly Dolly Joined: 22 May 2004 Karma :

Does it have gear driven cams like the vfr/rvf 400's?
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quik_d · Could Be A Chat Bot Joined: 18 Mar 2005 Karma :

i think so,

ooooooooh god don't say things like that, sounds expensive!

whats your idea then?
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Lee_367 · Brolly Dolly Joined: 22 May 2004 Karma :

They always make that noise if its got gear driven cams, its like a whooshing noise when you rev it.
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?It?s mercy, compassion, and forgiveness I lack?not rationality.?

quik_d · Could Be A Chat Bot Joined: 18 Mar 2005 Karma :

oh ok, but this is a high pitch noise, squeal and i've been riding it since july and never heard it yet, is it due to the cold?
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beast rider · Could Be A Chat Bot Joined: 24 Feb 2005 Karma :

Have you cleaned your brake pistons recently?

I have a similar problem, every once in a while one of the pistons get stuck out slightly pushing the pad against the disk.

All i do is take the callipers off, take out the pads and give the pistons a good clean with some brake cleaner and a tooth brush.

It works for a few weeks till crap builds up on them again.

jonnay · World Chat Champion Joined: 16 Mar 2005 Karma :

wheel bearings possibly? I'd also check your brake pads as beast rider (above) said, I had the same problem every few months on my ped..

Jon
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Jack_Cheese · World Chat Champion Joined: 14 Jul 2005 Karma :

I'll be geeky and say the cold temperature has caused a part to contract, causing the whistling when air passes over it. Its probably gas movement, bearings sound like a plane taking off, and i'm fecked if i can hear my water pump. Check the exhaust and airbox, and any generally wobbly parts. Last of all, check your bloody helmet! It could be nothing more than an iffy vent on your skid lid, or even a crack in the visor!

Jack
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quik_d · Could Be A Chat Bot Joined: 18 Mar 2005 Karma :

great minds think alike, i considered the front brake, so i went out this afternoon and cleaned them up with some brake cleaner.

I also thought about maybe is was something contracting but one of the times it did it i had just set out, 2 minutes into my journey, most times its 30 minutes in so seems a bit random.

would a wheel bearing make that noise all the time?
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sickpup · Old Timer Joined: 21 Apr 2004 Karma :

Its a cam-chain not gears. Fan could well be seized, its common on BROS's.

Jack_Cheese · World Chat Champion Joined: 14 Jul 2005 Karma :

freestyler_onli · World Chat Champion Joined: 08 Nov 2004 Karma :

MIne sounds like a washing machine as i accelerate- like the spin cycle whirring! Shocked

quik_d · Could Be A Chat Bot Joined: 18 Mar 2005 Karma :

Update>>>>> after poking things as im going along when the noise was going (not recomended) i have found it to be something to do with the clocks! speedo to be precise. Any other ideas? i'm going to oil the cable tomorrow
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sickpup · Old Timer Joined: 21 Apr 2004 Karma :

You sir have a worn gear. Be careful as I think its the long blue gear that gives the mileage reading. If you need a clock PM me.

quik_d · Could Be A Chat Bot Joined: 18 Mar 2005 Karma :

how do you know its the blue one? have you had a set of clocks apart? your idea idea sounds quite likely, it still reads true and shows how fast i am going and clocks up miles normally
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sickpup · Old Timer Joined: 21 Apr 2004 Karma :

I've owned 6 BROS's and had them apart.