heffergm

Hrm. I pulled the flywheel cover off yesterday. There's a bit (as in, a few small spots) of surface rust, but there's no evidence of any real water ingress or substantial rust.

Any creative ideas as to what this might be?

As noted above, I've never had one go, so I'd suspect something else is perhaps causing the failure. I've had 3 GG's now... the first 2 went 300 hours, the current one is on 100 (over relatively short time spans).

No, he's saying: - remove the spring and measure it's length - reinstall spring, then tighten the preload adjuster down until the length of the spring is 10mm less than your initial measurement of the springs uncompressed length

I must have missed something. Anyway, I don't own a TY, I've only ridden a borrowed one once. I'm surprised it even had bars, since it definitely had no brakes.

I can't really imagine why the gearing would inherently matter. It might exacerbate or mask the problem for clubmen, but surely a clutch dump in 3rd regardless of the gearing would cause the problem whether there's 9/10/11 on the countershaft. My '13 popped out of 2nd all the time. It drove me batty. I've seen it happen to Gary as well, although I think the last time I saw it was last year. You might run it by him.

Huh?

Your TRS manual is pretty clear about what ratio they want you to mix at.

I think they're trying to prevent moveable ballast. They all add weight, they have no choice, but it's firmly affixed to the bike.

75w light gear oil is pretty thin, so I wouldn't worry about that. The GG only takes 350 - 400mL (370 will get you right to the middle of the sight glass if you drain it hot and tip the bike to get everything out). I think you're in the US. My recommendation would be Silkolene light gear oil or plain old ATF. If the belray is motorcycle specific I wouldn't expect it to cause the issue with slipping. Assuming that's the case, pull the clutch out and measure it. It should be between 9.85 and 10.05mm. If it's way under the low end of the spec, that's your problem. Time for new plates. It won't be much over, because if it was the clutch would be rock hard to pull in.

Sachs, Paoli. Equally yucky! (I'm still remembering my '13 that had Paoli's on the front, although I think the rear was a Sachs).

There's little point in a huge redesign for any of the manufacturers now. We're riding the very long tail of trials bike engineering, where the 'changes' are all essentially fixes to any existing problems that crop up, or supply chain issues, etc. New manufacturers like Vertigo and TRS started with a blank sheet and the ability to pick and choose what they liked (or didn't) from the current crop of well refined bikes. They could also have thrown all that out and started over if they felt there was room for major change. The best they could do (which isn't a knock on them) in terms of innovation was really just the fuel injection on the Vertigo, and as we know they weren't the first to do that. Short of someone finding a way to shave another 20 pounds off a bike, I'm rather fine with small steps in refinement, as all the current bikes are more than capable. The cost associated with any major weight savings at this point is going to be prohibitive, so again, what are they gaining with huge redesigns other than a huge engineering bill... I can't think of anything. P.S. Beta could just make a lot of people really happy by putting some Tech forks and a Reiger on the bike. Hell, they could split those changes over 2 model years! Or even three, they could do one year with one Tech fork leg and one Paoli.

Not to overstate what should now be obvious, but again (read the description and note the two quoted viscosities): http://www.silkolene.com/motorcycle/gear-oils/gear-oil-light/ https://www.motul.com/us/en-US/products/transoil-expert-10w-40 Etc etc. I think you get it now.

I know nothing about the specific oil he's got, but plenty of people run motorcycle gear oil of 75w or 75w80 in trials bikes. Silkolene Gear oil light, Maxima MTL, etc. All work very well in a variety of trials bikes.

Gear oil and engine oils are rated differently. The end result is that a 75w80 gear oil is roughly equivalent to 10w40 engine oil. A lot of gear oil manufacturers publish engine oil equivalency ratings on the products.

Well, there you go. I was wondering what the deal was with the Vandal, it seemed to have disappeared.

Have you not seen all the other factory bikes with automotive wheel weights stuck to the bash plates and secured with zip ties? High tech isn't really required. At one point they were using rebar on the TRS because, well, probably someone found it laying around..

The Vertigo starts fine (first or second kick when cold). So either you're doing something wrong or there's an issue specific to your bike.

It's the lowest place available to put weight. I suspect they don't mind the slight change in angle of the bash plate because it just forces the bike forward a bit if you end up resting on it at the top of big steps. Clearly the loss of a little ground clearance isn't a concern or they wouldn't do it.

Lol, yeah. Just settings... of course the settings are applied to a one-off Ohlins shock no one else can buy. Although to be fair, in keeping with his 'we use all the supplier parts' quip, it is at least an Ohlins.

He blew out his ACL as I recall, he could be a very long time coming back, if ever. He did look good in the indoors up until he got hurt, so I hope he's ok. Athletes get paid (or as I imagine in Arnau's case, he probably just gets transportation costs, mechanics, support, etc covered) to compete, and if they can't what would you have their employer do? They need to get someone else on one of their bikes.

Yeah, they're needed. There were two GG's released in 2017, the first was red and grey with big GasGas lettering on the seat. The second was the E4, which I believe was red and black. I don't recall ever seeing yellow on a stock GG in recent memory.

Can we dispense with the absolutes? I think in this particular case, it wasn't. He was back on the bike within a month, performing at the same level just with reduced fitness. I think it's fair to give him a good period of time to overcome any lingering physical issues and at the same time reclaim full confidence, which always takes a hit after any injury.

The current recommendation only became 'definitive' when TRS got around to inking a deal with NILS. Prior to that they spec'd ATF, which is likely what most people in the US use in it as that's what the importer still recommends. That said, any light gear oil like silkolene light, Maxima MTL, etc will also work.

As above. If you ride an easy line, go ahead and make the clutch as soft and progressive as you care to. If you're moving on to advanced techniques though, you want a clutch that hits harder, and you have to pay a bit of a price in lever effort to get that. An adjustable preload ring is the easiest way to go back and forth without messing with the clutch pack itself. Provided it's within spec, all you need to do is select one of the 3 settings, and the clutch will go from hitting like a hammer (with heavier lever pull) to being nice and, well, slow (with easier pull). They come on all the new GG's, but you can buy a Xiu ring.