OSSA

Anyone else a bit dissapointed in the stock narrow and short bashplate? I think OSSA made it too small to save weight. My bike has seen a lot of riding abuse and I found mine has very much worn out a great deal of footpeg lower parts and frame, some serious dents on the suspension linkage too: Plus also I put on a flywheel weight that made my gear lever stick further out w/o protection, hence decided to get a wider and longer bash plate. Thankfully Mark (jkmr1) in this forum has made a laser-cut wider bashplate speciefically for OSSA for a very decent price and sent me one from OZ. Here's vs stock: And now covers up the exposed areas very good, ha…

hey all, i’m trying to replace the stator in my 72’ 250 mar but i’m not really sure what to do where i’m at. i have a vague idea but i’m just making sure i don’t mess anything up. i was wondering if anybody knows what i need to do to get to the stator from here? thanks.

Had a lot of fun at a Trial this weekend.

Well I finally got around to making up a spare diagnostics cable. I have BTWICE one, but got the USB TTL interface a couple of years ago to make some more. I used another user here (darn if I can remember name right now) for the TX/RX and ground pins (already knew power from battery ones). Worked great! I tested my BTWICE first, then the one I made. I had to pick a different COM port that matched to the new cable I made, but the driver I had worked great. I see where you can download drivers for the USB interface I used also. I was running under Win7, reset the TPS and a few other tests. I did not try loading new maps with it though- but I expect it wil…

2015 TR300i Recently purchased this bike and had a hard time starting it. Fuel pump was suspect and was the problem. After replacement the bike fired up and ran perfectly for 10 minutes - until it stopped. No spark, tried different plugs - nothing. Do these bikes have a weakness in the spark creation department ? Anything come to mind after an engine removal but ran for 10 min after install ? Not enough time with this bike to know what the go-to's are. Everything seems to be plugged in and secure. Pulled a coil off another dirt bike but still no spark. Blue/black wire to coil does show a voltage signal on a digital meter when moving the kick starter.

i have just brought a 2013 Tr280i and amg oing to give the gear oil a cheange... does everyone use the putoline Nano Trans (liquid Gold!!) or is there a cheaper alternative.. was looking at putoline GP10 75w has anyone tried this or any other alternatives that can be changed frequently and cost effectively... Thanks

Has anyone experience with the new fibreglass replacement petrol tanks, coming out of Spain for MAR's and TR80's? Do they stand up to the new fuels or do they have to be lined?

Hi, does anyone have one of these bar pads they will sell

Hi All, Looks like i'll be splitting the engine on a 250 Mar I've just acquired. It only selects 1st and 2nd ,and I have seen a posting from scotty in 2007, which had a good reply from woody. There was no outcome posted , so wondered if anyone as come across this since. Also does the engine drop out the frame easy, looks quite tight .

I'm getting an ' Drive Circuit Open' error P1611 Everything seems to work Anyone know what circuit t It referrs to?

I've had a bit of a disaster this afternoon. Putting the finishing touches to my fresh OSSA MAR restoration and as I was adjusting the front brake cable the threaded post snapped off on one side. So can any wise folks tell me what other models used the same brake plate as I can't find anything on eBay. Thanks

Anyone know the timing setting for a 1984 250 gripper tr80? (** edit 1984 doh **) Found this for older models, is it near enough? Thanks guys..

Anyone know of a cheap substitute for the TR280 fuel cap until I get a proper replacement? Up here in the GNW ordering parts take a long while to get here. Kinda need one by Saturday. Sheesh thats two days away. Does the Beta EVO fit?

HI , Im restoring an OSSA TR80 and looking for a sump guard for it . Thanks .

Hi all I guess this has been asked before I love the green colour of my Tr77 however the side panels are in pretty poor condition so I was thinking about replacing with pattern part's any help on the nearest to factory green would be appreciated, I'm leaving the tank as it's got some nice age related marks And the plan is just to clean it And then clear coat.. Cheers

Following the issues with my mar first having an oil leak, then jumping out of gear, I have removed the oil and refilled it a couple of times. The first time I drained the remainder of the oil that hadn't already leaked out, then filled it with 900cc / ml of oil. Following a 5 min ride I left it to drain again over night. After re fitting the detent plunger I went to put the drained oil back into the bike. To my surprise there was only 600 ml in the catch tank ?????!!!!!! Where are the other 300ml ??

Does anyone know if there any wiring looms about or of a wiring loom i could cut up and re solder ,spent 2 months now trying to fix my bike just about every thing has been changed other than wiring loom and ecu been in a shop and thought it had been fixed ran fine for 2 weeks now the problems back

Hello, bought a Tr280i over a year ago, unaware (didn't check!) that the parts were difficult to get hold off. Changed oil this weekend only for drain plug to shear off, managed to get it out! Can't find one on google, trials and tribulations sold out.... Anyone know if a gas gas or other bike will fit? Outside diameter is 11.6mm, but its not M12, could be BSP, NPT metric fine.....not sure, just hoping another bikes will fit thanks

Hi all. Has anyone got a picture or diagram of how the rear brake cable connects to the pedal bar and the rear wheel. Cheers Sid

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…