OSSA

Could you help identify which OSSA trials model this is please, frame number B-700~#~ engine number M-700~#~ I initially thought it to be a TR77 250cc but after a google search this model seems to start with a B-72 number designation. Also what is the correct colour, some TR77 models have a black frame & dark green tank, others an all over lighter green frame & tank. It has sloping down rear shocks, lower mounting at the rear end of the swing arm with the upper points a little way down the frame tubes. Full width hubs which as far as I know are the same as those on the MAR. Betor forks, gold anodised wheel rims, the exhaust pipe is longer than on a MAR, it …

just got a 2012 model its got jitsie pre filter aswell as standard air filter set up, but it seems a very noisy intake and i find it little annoying are they noisy with standard air box lid, has anyone got picture of normal air box top as i was thinking of maybe masking off some of jitsie filter to reduce noise but without reducing air flow thanks

What are the pros ans cons off buying a 2013 Ossa 290i Guy

Hi All, I thought I would share this with you all. I have been looking at various options to repair the stripped threads on my barrel and came across Seager Engineering who were advertising the service for Norton's. They have carried out the repair by machining and installing a bronze insert with a parallel thread. The workmanship is superb and I would highly recommend them. Spoiler

Hi folks - Adrian again here with my basket case Ossa! So I went to put the clutch mechanism onto the shaft. Behind the clutch are a thrust washer and a spacer according to my Clymer manual. As always with a basket case like this - I don't have these parts, or if I do - I don't recognise them amongst boxes of irrelevant non-Ossa parts, machine tool bits and bobs, random stuff etc... I have a thrust washer that fits on the shaft nicely, but how thick should it be, and what about the outside diameter? I have no idea as to the size of the spacer, but I assume it is wide enough to ensure that the inner sleeve of the needle roller bearing is just proud of the clutc…

I have a 1974 Ossa MAR. If it sits for any period then the kick start lever will not kick freely to clear the clutch. I let it sit for days with the clutch lever clamped to disengage the clamp. It still doesn't kick free so I read on this board some time back that one way of dealing with this problem is to put the front wheel up against the wall and then start the bike. I did this and even though the clutch was not free, when I started the bike it ran as if the clutch was disengaged. What am I missing here? I need to take it somewhere to ride it and do any shifting so I haven't (I'm 73 yrs old so lots of trial and error is hard work). With it up against the wall with…

Hello people, I'm tidying up a few wiring issues inherited from previous owners and I've hit an issue without an obvious solution. Can anyone tell me what the MIL wire from PIN22 on the ECU is supposed to do? It's currently connected in a very nonsensical way and I'd like to understand how it should be connected. Does anyone have specific knowledge? I've a loom with the six pin diagnostics connector and the easystart system if it helps. Failing that, does anyone know what happens to pin 22 in the cases of a fault and no fault? Thanks in advance. Cheers... Paul

Press release received with these pics. Release is in Spanish only though so no further info at this point.

I have a 1970 ossa plonker/pennine.Does anyone have an idea of how many were sent to the united states ? I,m just curious if it was a rarity here.

In the diagnostic software there is a setting that allows an increase or decrease in the amount of fuel the bike uses. Anyone messed with this? What is the purpose? Default setting is of course 100 % but can be changed by +- 5%

Hi What issues are there with the TRi 125? Starting? Injection? Glued-together frame? They don't seem to wear very well? They seem to be even less common than the bigger Ossa. Thanks

Gents, can anyone recognize this Ossa front hub in the top pic? 122mm dia. Please note that there is no groove around the outside the brake liner. (Other 122mm Ossa super pioneer hubs I have have such a groove - as in bottom pic) Perhaps a Mk1 MAR ?? cheers

I've gone to change my sprockets today and last time I Was in the ossa dealer I bought a set which was front 10 and rear 42 but I've noticed the front I currently have On is an 11, can anyone tell me what the standard set up Should be on a 2013 300 factory rep

Hi, my friend tells me the new Ossa has wheel bushings rather than bearings, is this really true? Anybody know how it's working out? Thanks

just got a lanyard kill switch, does it matter which wire goes where ? just the wires on the new one and old one are different colours jsp

I haven't attempted to remove it yet, but my kick-start is loose, ie. It doesn't stay in the folded position to keep it out of the way during riding. Is there a warn part I can replace / build back up with weld? Or is it a case of throw it away and completely replace?

I have a 2012 Explorer with the original air filter, which just I cleaned, and now can't get the sensor seated back into it. I even tried to heat up the rubber (w/blow dryer), but still can't get it pushed all of the way in. Any tricks? I spoke to Lewisport and they can't get the upgrade kit (2013+ with the top screw). I did get the secondary air filter, which is good as I am not sure I'll take this one off again ;-) Thanks!

Well, me idiot forgot to connect the rectifier after I installed the stock exhaust (me old Termi needs some carbon fibre repair). Basically I rode 2-3 hours without cooling and voltage control! ECU should be fryed (overload), engine should be seized (from excessive heat), but NO, the 2013 very-high compression headed OSSA TR280i thing kept going and going without blinking! I thought it's running a bit strange, and after a very hard core section I noticed vapour fog coming from below the engine (coolant vent) and noticed there's no fan action. Then the shock came and I released my mistake. The designer of OSSA TRi, mr. Xiu, put a lot of effort on getting the op…

Anyone else had their coolant turn to a grey colour? Doesn't appear to have oil in it, and there is no water in the engine oil - its just gone grey and looks horrible. I don't know if its just broken down or if the stuff in the bike has been eating the alloy? We've flushed it out and put fresh (good quality) coolant in there today and I will change it again in a week to be sure all the bad stuff is flushed out. I've emailed a photo of the coolant to the importer. Also anyone know at what point in the delivery chain would the coolant be added to the bike?

Hi, hopefully someone can help. My 2012 factory gearbox has just decided to lock up. After following the instructions I can find on the net I've removed the 5 bolts, sprocket and gear lever but it still feels solid when tapping the shaft. I don't want to tap harder in case there's something I'm missing. Any ideas.