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Noisy Seagull

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Noisy Seagull

Post  Mike Neden on Sat Mar 11, 2017 7:02 pm

Hi

I've just fitted some new Armours fishtails to my 35 Seagull, which are a lot louder than I had envisaged. I'm contemplating fitting some baffles within the downpipes. Is this a good idea?

Cheers

Mike Neden

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Noisy pipes

Post  piston 197 on Sat Mar 11, 2017 7:52 pm

It seems that Armours while making good external replicas of 2 stroke silencers do not understand the necessity for internal baffling and back pressure, you are not the first to have noisy silencers for 2 strokes from Armours.
Yes some baffling is required to reduce noise and to create back pressure

JH
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Re: Noisy Seagull

Post  Mike Neden on Sun Mar 12, 2017 9:32 am

Thanks John

Feked.com do a 5 1/2 inch long baffle for 9. I'm going to get a pair and weld them into the end of the downpipes. Whilst the Armours pipes look okay, they clearly are not effective "silencers", which a bit disappointing.

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Mike Neden

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Baffles

Post  andy-s on Sun Mar 12, 2017 4:34 pm

Hi Mike, could you post up your results of fitting the baffles please . I too got a new exhaust from Armours for a falcon 74 trials convertion .It did have some sort of baffle inside but the back pressure was all wrong causing backfires . The baffles were just 4 discs welded to a bar in the silencer , not a tube with holes in like a traditional baffle. I have now taken the baffle out but the bike sounds like a machine gun going off now.
Cheers Andy
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Re: Noisy Seagull

Post  Mike Neden on Sun Mar 12, 2017 4:59 pm

I should have update in a couple of weeks.

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Mike Neden

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Armours Baffles

Post  peter@dunfordconstruction on Sun Mar 12, 2017 7:53 pm

Hi Neden,

Armours do the correct baffles for F?B pipres

Peter

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Re: Noisy Seagull

Post  Mike Neden on Sun Mar 12, 2017 8:32 pm

Evidently they don't do any to fit the pre war fishtails.

Ta

Mike Neden

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Re: Noisy Seagull

Post  Mike Neden on Sun Mar 19, 2017 4:40 pm

Andy

Right, I got the baffles from feked. They are a tube with holes drilled in it. As, unlike some baffles (such as the ones in my RD250), they have no specific "direction" I have effectively fitted them back to front, with the outer, wider end in the downpipe and the drilled tube extending back into the silencer. The outer was a bit wider than stated, so I cut four slots in them and persuaded them in with a hammer. They certainly ain't going anywhere, but I might tack them in place. I should have taken a photo, but I forgot. They have taken the edge off the the sound and I'm reasonably happy. Feked do a range of diameters and lengths and with hindsight, I could have tried a longer baffle. You could obviously wrap them in wadding, but I'm not sure if this would oil up and cause problems.

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Mike

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Baffles

Post  andy-s on Sun Mar 19, 2017 5:41 pm

Mike , thanks for the update . I will take a look on fecked and give the baffle a go. The dumpy silencer on the trials bike I have is only about 8-9" long plus a small tail pipe . If all else fails I will get an old standard silencer with baffle off a Falcon 74 . I know this would work as it would be the same as my road going bike . Cheers for your help Andy
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Re: Noisy Seagull

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