OSSA

Hi, which is the most recommended plug for 280, bp5es in at mo. Any ones which make it better? And start a bit easier....

I see on the front page , the results from Bootle Scrambles club show that Stephen Dixon won on a Ossa, is this the first win for the new bike?

Have been thinking about buying an Ossa around the 75/76 age to compete in the Pre 77/80 class in France and Spain. Could any of the officionardos of the Marque point me in the direction of what to look out for and any sensible things/mods needed to bring it more up to date. Not interested in making it something its not..... just want it to run and ride as well as it can. Thanks in advance.

check out the new web site they have upside down forks i think they will have some problems there and i also think they might have some problems with the air box it looks to go straght in to the throttle body and it looks like it gos straght down i think mabe it will hold water??

Anyone tried one? If so I would love to hear your thoughts. Cheers Jon

Any news about the OSSA explorer in Europe? It wont be in North America until June. Just wondering if its out in Europe now, if any reviews, videos, etc. I have seen the CAD renderings, a few of the photos from the OSSA site, the various magazine articles based on the product literature. I am quite interested in this bike, as it is trials based, very light and they will try to make it street legal in north america. Thanks

Hi Been having some issues with the mixture on mine, plug is always sooty black, went through new plug in a trials and a practice today, saw that the TPS was loose too, anyone know of somone in the leicester area that can reset the tps and have a fiddle with the mixture? i have had a google but couldnt see any trials mechanics in leicester at all but them i am not the best at googling. I do plod around on the easy routes so i dont make the bike work as hard as it could, i cleared it out with a quick 4th gear full throttle blast and it smoked like hell for a while. that did make it a little happier but then wouldnt idle, cleaned the plug and its all lovely aga…

Hello, I have a gap between the cover and the casing,is this comon? I fill the casing with water when i wash the bike. I have seen both carbon and magnesium covers,any sugestions?

Anyone have any details?

Hi everyone, I own my 2014 tri280 over 7 years. I use it only a few hours a year in my backjard. No oil changed or repairs were needed. Untill now. The clutch is starting to give problems: When "clutched" ( i mean brake connection between crank and gears) it starts to drags al little. I have to brake otherwise it will slowly drive away. The point of engagement (? if this is the correct term, im not sure) hasnt changed. When "not clutched" there is no slip at all. (sorry about bad english, i try) So before taking everything apart I read as much as possible. Found ossa-efi.com. Thanks a lot Konrad for your work. I found stuff reg…

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?

I think the Ossa looks to be very innovative and cool. But I have a question about the frame. I have done some research and am unable to find the answer. Frame: CR-MO steel tube profile with pipe and bottom made of cast aluminium So how are these cast aluminum pieces attached to the CR-MO steel tubes? I can't see any bolts. Am i blind, daft or just missing something? Also any concern of damage to the lower portion of the fuel tank with having the skid plate mounted to it? Could be quite a bit of stress on the lower part of fuel tank with the skid plate being bashed and bending around a bit.

I am just installing the updated shifter drum and new shift assembly into my 2012 - this will allow for easy finding of neutral and a little bit more strength in shifting. My question is about drilling an oil transfer hole. In the attached picture I mark two areas that are at the lowest portion of the tranny plate. Should I drill at A or B? What size hole? Oh, and should I use any thread locker on the tranny bolts? I used blue locktite last time and I nearly stripped a couple of them getting them out this time. (Torx T10 - sheesh - give me a break?!?!?) thanks

anyone brave enough?

Hi. I was hoping someone could help med with a problem I have. After winter storage my 2013 Ossa TR300i keeps boiling. Fan won’t start but I’ve tested it out and the fan works with direct power. I’ve read multiple post’s on this but still can’t figure out what’s wrong. I’m no pro when it comes to MC engines so I’m having some difficulties figuring out everything. I was thinking of sending it to service, but found out that it cost almost as much as I gave for the bike so I’m hoping I can fix it myself. Thus far I’ve checked all connections and they seem fine. I’ve ordered a can of Evans waterless cooling hoping it will stop the boiling but i think I should fix …

Hi does anyone know what bearings and bushes are needed for the swingarm thanks Lee

I first will say I appreciate the experience and knowledge here. I grew up riding when these machines were being made, but never considered them as I was a kid growing up racing MX when the Japanese bikes arrived and became dominant. Fast forward to 2016, I wanted a trials bike. Many reasons why. My good friend and riding buddy purchased a 72 MAR about a year ago that was supposedly very nice. He learned it was good but lacking in the fine details and he does not have or own junk. A few weeks ago, knowing he needed some original parts, I noticed another MAR on a Facebook group that was for sale reasonably inexpensive. He acquired it. So he had plans to build a …

I read the 2013 spec and nothing said about a starting battery pack? Anyone care to comment?

I'm contemplating buying a 2012 tr280i, but am concerned about the spares situation now that the factory is closed. I spoke to a chap at Trials & Tribulations who was very gloomy and basically told me not to touch it. Birketts are currently closed so can't ask them. Does anyone have any views or advice? Thanks

Anyone had their TR frame powder coated? Will there be an issue with the heating process affecting the bonded parts? Not too keen on the frame colour of my 12 bike and fancy something a bit different. I assume the factory bikes with the white and green frames have been powder coated but just checking that assembly of the actual frame wasn't done afterwards. Any advice?