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[STU]

I just used standard silencer wool and secured it with soft steel-wire ties.
To be fair it may make the motor run a little richer - this was only noticeable at low revs so I tuned it out with the idle mixture screw.
The baffle that I used was our hosts on with the tangs. This fits into the outlet end of the Goldy and is secured with a 6mm bolt which goes through a hole in the end of the silencer.

[Alan R]

Hi guys-------- try "silencer baffles" on Eee-bah-gum-bay for 137 results including wool and longer removable units.

[John R]

Paul M H- Take a run through the Rotherhithe Tunnel and report back on the noise - I'd do it meself if I still lived in 'ackney!

[another Allan]

My bike started life as a Watsonian Trials 350, 2003 vintage. When i bought it, it had been fitted with a tuned 625 engine and also one of our host's 'goldie' silencers. It was ridiculously loud. Just opening the throttle at 50 mph seemed to double the volume of noise before any increase in speed, and the tone had a hard, high-pitched edge to it.
I replaced it with the original silencer which came with the bike (not an Enfield one - it's stamped Brituro.) It still makes a respectable 'thump' at low revs, and a roar when running faster, but it's a big improvement on the 'goldie.' I must admit that I didn't bother with trying to adjust the baffle beforehand - it may have made a difference, but I suspect that the size of the bangs made by the engine plays a big part in the overall sound output, and bending a few tangs wouldn't have made so much difference on my bike.

[Howard 612]

John R... Unfortunately the Rotherhithe Tunnel is now fully equipped with speed cameras (at 20MPH IIRC) which sadly puts the damper on any exhaust music concerts.

[Barry N]

Thanks for all the replies!
The reason for my question is that I have recently converted my Sixty5 to a 612 (using the full Hitchcocks kit) and, although I am still at the running-in stage, it seems to be very sensitive to different exhausts. My original plan was to keep the freeflow silencer from our hosts (91007) which made a big improvement to the Sixty5, because I wanted to keep the bike looking relatively standard. However, the performance seemed a little lacking (I am now at 500 miles and into the mid rev range for short bursts, but to be fair its not properly dialed in yet, mixture and timing wise). But when I tried the megaphone that was supplied with the kit (with cone and baffle tube in place) the difference was astonishing! Ok, its a bit loud, but with extra packing I put in, the noise is acceptable (well to me at least - can't vouch for the neighbours though!). So I was wondering how big the hole was in the Goldie!

[Howard 612]

You definitely need an exhaust with the straight through "absorption baffle" for a 612. The Goldie will be broadly similar to the mega, and the third type that is very suitable is the semi-upswept early 50's style exhaust, which also has the same type of baffle arrangement. Definitely a big improvement over any exhaust with conventional baffles, which will sap your power.