OSSA

Hi there all,new at this forum buisness so go easy on me,i thought i was close to buying a new OSSA TR280 (2012),but managed to get a ride on a 2012 model at a test ride day last week,i was very disappointed in the clutch drag the bike had and neutral was totally (unselectable)with the motor going ,i realize this has been a sore point on some or most of the bikes,just wondered what all you owners have done (oil type and adjustment wise) to overcome this problem? I have sent of emails to quiet a few dealers in a few countries and this is not an isolated problem,some have found the AJP master cylinders bypassing from new and need a repair kit installing and say you need to …

I'm after a 2013 Seat and Rear Mud Guard, anyone know where I can order one from? Also interested in the air filter/wiring kit which is in the special parts catalogue.

Im looking into a new bike ad I was going for a montesa. I orignally looked at ossa's but heard alot of negativity about the 2011 bikes, which over shadows the good points really. ive read a few bits of topics but theres no real topic on 2012 bikes yet. is the 2012 a much better bike with all the previous problems being solved? or are there still issues that need addressing?

Bit of a stupid question, but when you put the nut securing wire on the mar clutch, do you route the wire through all 5 posts or wire them individually

Hi, can anyone suggest somewhere to get a set of decals for my 1975 Mk2 mar? Apart from fleabay I can`t find them antwhere. Cheers, basketcase.

What 2T and gear oils are you chaps using in your 280i's?

Hi fairly new to this forum, i have just started trialing a 1974 Ossa 250 mar, and i have a few mods i would like to do so any advice regarding these mods would be much appreciated. Firstly, front suspension seems very soft,and and appear to creak a bit when riding, forks are mainly compressed when riding and dont seem to have much travel, i have put heavier weight oil in but it doesnt seem to have made much difference! i am 6'3" tall and a bit on the heavy side, at present the bars seem a bit low(renthal 3"rise) which puts all my weight over the front end, i have ordered some 6" rise renthals so this might help and then will posibly add some bar risers to get me more…

Does anyone know the bearing numbers for a 2012 ossa wheels ? jsp

Damn!......that is a good looking bike http://www.trialscentral.com/news-archive/trials-bike-news/15903-ossa-launch-factory-r-2014

my new toy the new first 2012 Ossa TR280i in China, Hong Kong and Macau regions super nice bike !

Hello, I'm a noob to the forum, having just bought an Explorer. It needs some work, nothing dramatic, just fork seals and wheel bearings... oh, and a cylinder head to replace the cracked original... all which are in-hand. I've not ridden it much yet, but already it's a bit obvious the suspension lacks refinement. What I'd really like to do is replace everything with the TR280i kit, but parts seem almost as elusive as rocking-horse poop. Is anyone breaking a TR or have a shock and forks they're willing to part with? Thanks in advance. Cheers... Paul

Anyone had the misfortune to snap off the 90 degree fuel outlet elbow? If so did you manage to get the part?

So there was I thinking this makeover on the bike would be a 2 minute job . Long story short ... Eventually decided that I wanted to put a factory sticker kit on my bike and do the frame white so ordered the sticker kit through my local dealer. He was told it would be here in a week ( which ends today ). I get a call from him this morning saying that they are no longer available?? How can a sticker kit from last years bike not still be available. I do have a 2014 tr280 sticker kit here but wanted something a bit different. Frame is lying bare and ready to be powder coated Is there a 2014 factory kit? Anyone post a pic?

Yesterday I was riding at a local trial event and bike was running fine. And then I was unable to shift in second or neutral, it was stuck in 1rst gear. I didn't drop the bike or crash it on that day. This morning I removed the transmission and I can't see what's wrong. I tried to change the shifter spring adjustment position with no luck. Unlike yesterday, now with the trans out, I can move between 1rst gear and neutral. But can't go up in 2nd gear. Any idea of what can be the problem? I seached on the internet but didn't found anything similar.

Hi, heard all sorts of yays and nays about the 280. Has anyone lived with one (or two) and decided to keep with the marque ? Good and bad points , pref from owners ! Its near the top of my list. Over 50s clubman level rider.

Before we start I am not posting this for any other reason than to understand how the fuel injection works, its not criticism and its not praise, I'm just interested. In the starting issues thread it was mentioned that the Ossa like a lot of two strokes needs to be revved from time to time to clear it out and this got me thinking. In a carb fuelled two stroke we have an inlet port and transfer ports. My limited understanding is that as the piston travels up this creates a vaccuum which sucks fuel mix into the cylinder below teh piston. When the piston returns this mix is forced out via the transfer ports and ends up on top of the piston. The problem with this is that so…

Hey I bought this bike in spring which is my first trials bike and I love the sport but I feel that I bought the wrong bike. After a handful of rides the bike started clicking while in gear, almost as if the bike wants to shift up. Even in neutral the bike clicks if you spin the countershaft. I removed the transmission and found some gears worn down and a chip off another. I sent the transmission to lewis sport but after a handful of rides it went right back to the same problem but now when shifting it sometimes doesnt click into gear properly. you can move the shifter up and down and it normally shifts cleanly but once and a while it gets stuck and you have to shift …

Has anyone retro fitted a breather pipe up behind The kick start, like the newer bikes have ???

Anyone have any tips on how to hold the nut on the rear brake pedal on the TR280 so I can remove it?

I am working on a 2012 Explorer in quite nice condition. The fuel injector is not working. I tested with battery power directly, it works great then down to about 6Vdc. Fuel pressure 50psi. When I run the injector test in the diagnostics, I can just hear injector click, but it does not open to squirt fuel. I tested voltage on with injector in place, doesn’t even move the meter. 9Vdc without injector. I suspect bad earth in the loom. I do not have a diagram for the early bikes (these have a battery from new). Ideas?