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[Nitrowing]

Physics 101 - weight hinders acceleration
Alloy stays can weigh the same as steel but will be much stiffer. We discovered this last century.

Reading some of the responses, it's glaringly obvious why we no longer have a motor industry
If you need explanations as to why weight is bad, I'm not going to waste my time trying to pull you away from polishing your brass. Read.

Exhaust lagging is basically fibreglass - not renowned for being heavy. Go and google why it's good.

I looked at swapping the rims/spokes with aluminium/stainless but it's over £300 a wheel. I'm looking at other bikes to see what is suitable but the sprocket alignment is an issue.

Rear has been junked - saved 3kg with the replacement. Saved half a kilo by changing those.
I'm planning on a new seat, I've never made a seat be before so it should be fun. I'll get it professionally covered. I've already started with titanium
Yeah, it won't have much more speed than another Enfield but it will out-accelerate and be more economical.

[Bullet Whisperer]

Physics 101 - weight hinders acceleration
Alloy stays can weigh the same as steel but will be much stiffer. We discovered this last century.

Reading some of the responses, it's glaringly obvious why we no longer have a motor industry
If you need explanations as to why weight is bad, I'm not going to waste my time trying to pull you away from polishing your brass. Read.

Exhaust lagging is basically fibreglass - not renowned for being heavy. Go and google why it's good.

Yeah, it won't have much more speed than another Enfield but it will out-accelerate and be more economical.

Bring it on

[Duke of Wybourne.]

I found the secret of how to improve power to weight ratio, acceleration, braking efficiency, top speed, handling, and save money at the same time.

Cut out the pies and beer.

[Adrian]

I think I shall stick with the pies and the beer and learn to live with effect on top-end performance.

A.

[Bullet Whisperer]

I remember one time at Mallory, seeing a big fat bloke eating a burger while sat on a Norton Commando racer with more holes in it than a Tetley tea bag ...

[Nitrowing]

Yeah, I saw a carbon fibre Ducati with a guy that needed half a herd of cattle to cover him in leather
At 63kg, I need to put a shopping basket full of pies on the front

[windmill john]

Jeesh you lot, stop worrying about those odd ounces, here you go.

[Beezabryan]

Now that the OP has shown us his P&J I understand the subject line

[Andy C]

How about this for lightened mudgrards: https://www.flickr.com/photos/jorvikiwi/5141443536

I remember many years ago seeing one of Alistairs tridents with holes drilled in just about anything that could have a hole drilled in it

[Rattlebattle]

Drill the holes in the right places and play it like a flute as you ride along.....