fourex

I never experienced that problem with it jumping out of 2nd gear, probably because I couldn't wind it up to the point of needing 2nd plus I was only 12. Can't help myself here,I'm sorry, found some pics of a young fourex riding his new 123 around the back yard the day it arrived plus some pics from my 1st Trial on the same bike. I think I looked p****d off because I didn't like having photos taken as a kid, I don't think I'd realised at that time what a dud of a bike I had. But it's some pics of a brand new Cota 123. See smiley face once on a TY 175.

The 1st Cota 123 was the biggest heap of ***** ever made, I've been scarred for life after my Dad bought me one at 12 yrs of age (brand new early '70s), even at this young age I knew there was something wrong with this bike, it was so gutless. Thank god he bought me a TY 175 when they were released, but I've still got the Mental Scars of that Cota 123. Beautiful looking bike for a collection not something to ride. PS: Not to mention that 20/17" wheel combo, welded clutch and front brake lever mounts to the bars,no chain tensioner and not enough power to pull the skin off a rice pudding. Awful, awful.

Please tell me if I'm a duckhead or missing something here, but why couldn't you put the same oil in the clutch and gearbox like we put in our modern bikes that serves both, something like Putoline GP 10 or Motul Transoil as an example. Just asking because I'm both confused and curious. Cheers.

Thanks for posting that, much appreciated. I have a computer illiterate friend over here in Australia restoring a T350 Piuma and he needs a white tank, if anyone has one to sell, please let me know. Sorry Tom !

I love that HFS stuff in my Fantic 300 forks. Nice Ossa !

Rather than tap up to the next size, wouldn't a helicoil of the the same size and thread pitch be a better option. I also like the look of the mudguards, where did you get them from ?

Part numbers starting with '73' are Cappra VR/VB I'm led to believe.

As per feetupfun, give us a pic if you can, or at least the dimensions. Cyclesavant in the US has a couple, stating 23.5cm end to end, I'm guessing 22cm hole to hole. https://www.ebay.com/itm/Montesa-NOS-51M-Cota-348-349-Alloy-Brake-Stay-p-n-5150-050-51-50-050-1/301583685771?epid=716924065&hash=item4637c9d88b:g:nvgAAOSwNSxVHvvP

I'd leave the tank alone, if anything I'd weld another metal pad on top of those existing ones. See the pics on my bent frame, once straightened the forks missed the tank by 3 or 4mm.

The stops on MH 349, Cota 349/4, Cota 350 are simply extra metal wrapped around and welded to the down tubes, refer photo. The forks only miss the plastic tank by a few millimeters when all is good. If your frame does in fact have these extra welded gussets on the down tubes, then I would be looking at other factors like is the plastic tank/seat unit mounted correctly, frame not bent (check rectangular main frame spar under tank and twin downtubes for straightness), and finally have you got the correct triples fitted (170mm between fork centres). I bought a 349/4 several years ago that had a bent frame and suffered the same problem with forks whacking tank.

Hello people, I'm trying to find some suitable plastic guards for a couple of my projects namely a MAR and Cota 247, I'm aware of Goneli and Stilmotor but the Goneli requires bolting a second guard to it for the required length and the Stilmotor is longer but doesn't have the desired arch. I know that Inmotion had some rear translucent Goneli style longer guards a few months ago that were about 680mm end to end and about 930mm around the arch and some matching translucent front guards but they are sold out and they aren't planning on getting any more made. Those Inmotion guards would have been perfect for me but I couldn't afford them at the time and now that I can they are no longer available So, long story short, does anybody know of other options or do you maybe have a set of those Inmotion guards that you would sell ? I'm in Australia. Cheers.

Just stumbled across this old post, it is a Kawasaki KX85/100 needle as others have suggested, made by Keihin to Kawasaki specs I'd assume. Some info attached in case you're still searching.

That's the '87 model I had with the crappy clutch, the '89 stripey certainly had a much improved clutch and punchier power.

Thanks Donniejn, but that was over 30 years ago and the bike is long since gone.

I don't think three types of TR 34 in 1988, maybe three types between '87 and '89. The way I remember the transition is based on my recollection from the eighties when I bought a brand new '87 TR34 from Florence at great expense because we had no importer at the time in Australia. The '87 TR34 tank was White/Blue/Red from top to bottom and had a MX looking muffler and the worst clutch imaginable that dragged.(mine) 1988 TR34 Replica, Blue/White/Red tank graphics from top to down, muffler that hugged rear sub frame and apparently improved clutch , never rode one. 1989 TR34 Stripey/Zebra, colours as above, muffler hugging the frame, much better clutch than my '87, had a importer now to Oz so got to ride a few, nice bike.

Finding good modern day shocks to fit older Twin Shocks is always a problem due to chain and chain guard rubbing issues because they weren't upside down back then, I believe the OZO shock can be run either way but you would still need to check that the clearance is adequate, InMotion who sells these in the UK would set you straight I believe.

Here's a pic of my dusty '14 R still with some of the heat shield in place, you can see the adhesive mark on the black plastic to guide you. Cheers.

Is that RL frame bent just above the left swing arm pivot where the boot wear marks are ?

If it's the black framed '74 with underslung clutch lever, it's more likely to be 48T. I think the '75 Cota 247 'Ulf Karlson Replica' and subsequent 247's had very different final drive ratios, more closely related to the 348.

Good thinking Graham, the Italjet T250 specs would be a very good starting point. Refer attached for Italjet specs, disregard the T250 being a four cylinder.

Another had, and another and so on.

David, I salute you and I mean that sincerely. You try to decipher the "indecipherable", I just smack my head on the table.

Can't help with that one, got too many bits removed from mine at the moment but real world results would be interesting to see. Seems the Jumbo was a low slung "heifer", but I seem to remember Schreiber and Michaud winning a World round each on one, must have been the power that helped them 'Launch' over the obstacles. Glad SWM chose 'Jumbo' over 'Cow', kudos to their advertising department.

Some specs I've found.

Thanks Graham, got the pics, they're fine. "Jumbo" doesn't just refer to the powerful motor, it's more likely a reference to the 98 kg.