Bernies Bike Shed

Triumph/TWN ‘Cornet’

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Nice spring day off on a ride with the TWN ‘cornet’ magazine cover from May 1956


Classic bike magazine  did a feature on a ‘Cornet and Puch SGS to compere them in April 2001, I restored the ‘Cornet in 1984 and the Puch in 1998.


Both bikes have new owners but both are running well 20 years on!!

Triumph Cornet

The brochures quote Rassig und bildschon und pfeitschnell German for sleek and beautiful and quick!! well, sleek and beautiful yes! quick  not quite true!!



English sales brochure showing the finer points of the ‘Cornet’

triumph-werbung cornet

German brocher early kick start version

Triumph Cornet 1953 6 Seiten A 5002 (2)

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English press photo’s of the road test machines top being the kick start version,note the difference..alloy rims,suspension units,horn in tool box lid below horn in carb nacelle ,tool box on top of tank all done to make way for two large six volt batterys in series for the 12 volt Norris electric starter.

Cornets kickstarter and electric start

The kick start and electric start versions together! the red colour was only available for the home German market.


period picture of a road/trials rider,the ‘Cornet’ hasn’t got the bulbous down pipe!


A ‘Cornet’ that i restored in  1984 ULN 60 came from Burwash in East Sussex i was the second owner i paid £175 for it!!! This bike is still running well.

bergmeister and sussex steam 033

My ‘Cornet seen at the ‘Chatham Steam Show’ 2017 33 years after i restored it! can’y believe it still looks that good!!

bergmeister and sussex steam 034

TWN Cornet 200cc (1)

Old photo’s of ‘Cornets above WLK 613 and  WYM 155 i know what happened to WYM 155!! what happened to WLK 613?


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French 'Cornet

A French restored ‘Cornet’

cornet with a strange exhaust!!!

A very early ‘Cornet’ coil springs /saddle!  but with a custom built silencer?

I have just come across this picture taken at the ‘Cumbria Steam Gathering’ at Flookburough cumbria in 2016 if any of the owners see this please get in touch as i am putting together a register of ‘Cornets’ in the UK


426 is a 1954 ‘Cornet’ and 432 is a 1957 ‘Cornet.


Motorcycling did a road test on the kickstart version in february 1955 but also did this one page test of the electric start ‘Cornet’ in October 1957


Adverts showing  cornets for sale at  lowering prices! they finally reached £129 10s 6D in direct competition with there much hated rivals Pride and Clarke selling the DKW RT200VS.

Also for £2 10s 6d (£2 52 and a half pence) you could have your ‘Cornet’ delivered to your nearest rail station result is ‘Cornets’ seem to be spread to all corners of the country!!.


A few years ago, i was talking to a man who turned out to be a ex Claude Rye mechanic he told me that the ‘Cornet’s all sold about 300 in total and they were a good commuter bike well built machines, But they had a achilles heel in regards to the pistons and barrel wear! if they were used in high speed runs  i think thrashed is another word!!  problems with the exhaust piston would occur ie the cool induction piston kept the much hotter exhaust piston going in not ideal conditions so wear would take place around the ring area and on the barrel .The barrels are chrome plated and repairs are expensive, they can be repaired by POETON or NICKOSIL, and around £250 per barrel plus your pistons at £100 each so beware. below is a all to common sight when stripping down a Cornet engine…

cornet piston damage

sad sight of a ‘Cornet engine damage on piston skirts and rings they are ready for the bin!!

Cornet barrells

The barrels don’t look too bad! but any cracks or chips in the chrome bore is a re-plating job!!


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