What happened to JMC?

[Sir Trev]

Originally Posted by Thunderace

"Ahem" check the sig.........

Stoke me a clipper... [/derail]

[NTECUK]

Bikes got more trick so they just went out of fashion.
Ficel lot bikers...

[DarrenSV650S]

Nobody really knows. Technically it could still be operating, but 3 million years is a long time for a company to still be operating. Although it's mining ship certainly lasted that time well. We may well find out when the new series starts next in a few weeks.

[_Stretchie_]

Originally Posted by speedyandypandy

I guess enough people found out the swingarms gave more bling bling than a performance upgrade and the sheep herd stopped buying them?
Was that a bit over the limit? I never ment to be mean, just honest.

Are you sure it's not just that people got fed up of waiting for a year for the swingarms to turn up and in that not being able to get hold of anyone... Allegedly of course, I have no experience myself, just going off the millions of threads that come up saying the same thing if you Google 'JMC Swingarm'

Originally Posted by Biker Biggles

But isnt that true of most frame/swingarm "upgrades"?
Since they stopped making bikes with hinges in the middle in the 1970s/80s most standard swingarms have been more than adequate.

I belive what Tony Foale has written on the subject, bigger swingarm to frame axle has the biggest impact on frame stiffness, and a little stiffer on proper bracing, look at racing swingarms and then look at JMC, what a joke.

Originally Posted by MarkB852

It was a cornerstone of my biking youth. Lots of riders had big ole UJMs with bendy frames and a JMC swingarm.

I think it was a bit like getting a tattoo...

Mark

I've got a tattoo, and will maybe get more, but I would need to be paid alot of money to use a JMC swing

Originally Posted by _Stretchie_

Are you sure it's not just that people got fed up of waiting for a year for the swingarms to turn up and in that not being able to get hold of anyone... Allegedly of course, I have no experience myself, just going off the millions of threads that come up saying the same thing if you Google 'JMC Swingarm'

Don't know JMC, so I wouldn't know, but even if it just happend to a few coustomers and the 1 feather turned into 5 hens effect came to play it's a few coustomers to many.

[yorkie_chris]

Originally Posted by speedyandypandy

I belive what Tony Foale has written on the subject, bigger swingarm to frame axle has the biggest impact on frame stiffness, and a little stiffer on proper bracing, look at racing swingarms and then look at JMC, what a joke.

They did have a purpose when standard swingarms flexed like saplings.

And modifying the frame pivot would massively cut down any shiny kit manufacturers market from people who want shiny stuff to just the really super serious techy people who would rather sell their kidneys and daughters to buy that ex-WSB bit of proper gucci kit anyway!

Originally Posted by yorkie_chris

They did have a purpose when standard swingarms flexed like saplings.

I'll comment after I've one day ridden one of the the CB 750 KZ 1979 I have.
I'll bring this thread from 3-10 years of inactivity with this comment

I think this is enough, look how small the bracing is, looks neat and is race proven. I love function over form, I like some form don't get me wrong, but JMC isn't form, it's like a "normal" american house with the 100000 x-mas lights and rudolf in neon green.

[Sid Squid]

Originally Posted by Biker Biggles

Since they stopped making bikes with hinges in the middle in the 1970s/80s most standard swingarms have been more than adequate.

This.

There's little or no reason to replace a swingarm on even the most prosaic of modern bikes. Unless you want a longer one, (oooer missus!), for straightlining, my Kat has a JMC extended monoshock arm with integral shifter tank.