miner

Parts arrived.... get it done this weekend

Here was me thinking all this was going to be straight forward....?

Liking the look of this, will watch later. cheer.s

Spoke to GG-UK when ordering the parts.... not a common failure and definitely a swingarm off job.... grrr. ? Anyone else snapped theirs?

Video not found....

Hadn't twigged until I watched the jim snell video on the 26mm Dellorto carb... then GG-UK yesterday told me it was the mixer jet... never knew such beasts existed, just thought it was a quick of the weird little carb on the GG. Think I was sober when i stripped it the first time....

Must say that I do like the old Eraserhead Avatar....

You could probably get the jets and the needle out without taking the carb out the boot by turning it... getting that rear boot back in was a PITA.

You only need to swap the pilot for low down and needle and main jet for mid/high. The rest is pretty fixed. ?

Makes it look very complicated... follow the jetting tables, tune by feel and stay on the safe side if you’re not sure. If you run the same jetting at 40’C as you do for 20’C and below, especially on sandy surfaces, you’ll run too lean. Temperature swings a lot here.

Aye figured that, merry Christmas!??☺️ Same as my other Keihin PWK shod KTMs. Shame it’s not a 28mm Keihin carb... the jets are all the same. ?

It said 270K - I thought that was odd....

Cheers... what about different pilots and main/needle jets for changes in temperature / elevation?

Any of these faults manifest themselves as difficulty hot starting? Or could I put that down to being tired and wedged in some rocks?

As above... do such beasts exist? Any good jetting guides for them? Anything different to set up for trials engine vs an enduro motor (no PV or spanny)? Spoiled with years of KTMs and their excellent jetting tables, selection of spare jets in the box... this is my first trials bike / GG. Out playing yesterday and it was quite a bit cooler than when I’ve been riding before (good 10’C or more), bike sounds a lot crisper but couldn't quite suss out if it was running lean or not. Felt maybe a little flat, thought it was running a little bit hotter... but wasn’t sure if it was just colder and I was noticing the heat more. Let me know about the above... flying home tonight and need to order chain sliders over next few days, so will order some jets (forgot to be honest!). Attached the jetting details from when I stripped the carb last time to clean it....

Was jet washing the bike today and heard a thud, looked down and saw the front part chain slider by the sprocket had broken off... I know these are a wear item, is it common for them to snap there? Maybe snapped it yesterday playing on the rocks and didn’t realise.... Can you get at the retaining bolts by taking the rear wheel off? Good time to swap out the other chain runners/guides as well?

Just finished the rest of it there... fair play to him. A brutal reminder of life back home.... beautiful on one hand and cruel on the other! At least it wasn't raining sideways.... made me a little homesick.

Following out of interest as I have the same bike.... starts ok just now. Ordered a new plug recently as it decided to take a bout 10 kicks when I stopped last time I was out just before I got back home, was going OK up to then but I know they can be problematic.

Aye.... welding areas are corrosion hotspots due to various mechanical, metallurgical and electrochemical reasons.... google it if you’re bored. I spend all day explaining them at work, I’m out. ?

Cleaned up a bit actually.... was in about with with degreaser First then rust remover. Not had a chance to fire it up and check for blowing properly because of work! But going to order some bolts and gaskets just in case as I need to order a new fuel cock.

Did that with the old 200 EXC... worked a treat, still got some there as well.

Sounds like a plan.... my tyres wont make it in time for the track this weekend so I'll have all weekend to clean it up and check.... on the plus side my new trials helmet is coming with the tyres, every cloud! Cheers guys, I will check it over properly at the weekend but as for cracking those bolts.... no chance!

Grrrr..... how you meant to do any major work on them when you live in a country with no GG agent? Jetting Tables non-existent as well?

Bike isn't using any coolant but that's a good point worth checking... I think the rust has come from playing on the scrubland behind where we live, its salty and marshy and I've probably missed that as it lay dirty for a couple of weeks after I broke my hand. I didn't realise how bad it was till I had to clean the bike and the Mrs quad bike. So taking the rust aside... there's no history of these blowing the exhaust seal and soot collecting on inside of the pipe from the exhaust gas leaking at the flange/pipe joint? Taking the bolts out the head is like Russian Roulette.... its happened to me before but luckily during a top end rebuild (exhaust flange on my old KTM 200 EXC). Anyone snapped them themselves on the GG?

On the KTMs the Viton rings go and they start blowing.... not sure of the seal on these. Top of the pipe looks more like soot, that’s what I noticed first. The corrosion came later.