So I decided to fill the Voxan with Castrol RS10-60 (it was the price that put me off 'wasting' it) and start it up. I don't think it's a good idea to put under load given its delicate state, but I had to let it tick over anyway to make sure oil had reached all the parts. The oil pressure warning light was extinguished easily just by cranking it round with the kill switch to off (yes, yes, some bikes allow that and it is vital for the Voxan oil change routine). During the subsequent warming up to do a final check after putting all the oil in I took a bit of scratchy MPEG on my camera. The noise is much worse when properly hot but you should be able to hear the rumble when the clutch is home abate when released. It isn't as horribly clattery when idling as I remembered, but the flakes in the sump strainer tell the story apparently. I'll see what Patrick in Limoges says. http://flic.kr/p/8HNcBR -- +-------------------------------------------------------------------+ | Pete Fisher at Home: | | Voxan Roadster Yamaha WR250Z/Supermoto "Old Gimmer's Hillclimber" | | Gilera GFR * 2 Moto Morini 2C/375 Morini 350 "Forgotten Error" | +-------------------------------------------------------------------+
Sounds very much like a dryish main bearing, or even a bit of piston slap. Hard to tell on lo-fi like that, whatever, it's gonna cost Pete
Dry, as in broken up, main bearing shells is the experts diagnosis so far. Think I'm probably going to just cut my losses and get something more mainstream. A pity, because I really like it otherwise. -- +-------------------------------------------------------------------+ | Pete Fisher at Home: | | Voxan Roadster Yamaha WR250Z/Supermoto "Old Gimmer's Hillclimber" | | Gilera GFR * 2 Moto Morini 2C/375 Morini 350 "Forgotten Error" | +-------------------------------------------------------------------+
I doubt it's fully broken up, or it would be knocking worse than that i would have thought & if it has, game over. Does it do the knock on the thrust or the return? Or both.. If you have copper or white metal in the sump or strainer... Put some very thick oil in it & sell it (kidding)
The story is that one batch of 100 early motors were built with shells from a shite (probably very cheap) supplier. They apparently 'flake', but not until > 10000 Kms if ridden as intended, though some pussies have got away with it for longer apparently. If I had done more miles on it when I first had it they would have had to do it under the warranty. Knocks most when the clutch is home. It did, I posted a link to a photo. <Looks round for an old can of GP50> -- +-------------------------------------------------------------------+ | Pete Fisher at Home: | | Voxan Roadster Yamaha WR250Z/Supermoto "Old Gimmer's Hillclimber" | | Gilera GFR * 2 Moto Morini 2C/375 Morini 350 "Forgotten Error" | +-------------------------------------------------------------------+
You're not helping you know. Or do you mean "for a shite French engine"? -- +-------------------------------------------------------------------+ | Pete Fisher at Home: | | Voxan Roadster Yamaha WR250Z/Supermoto "Old Gimmer's Hillclimber" | | Gilera GFR * 2 Moto Morini 2C/375 Morini 350 "Forgotten Error" | +-------------------------------------------------------------------+
True, it really needs a 'before' version. -- +-------------------------------------------------------------------+ | Pete Fisher at Home: | | Voxan Roadster Yamaha WR250Z/Supermoto "Old Gimmer's Hillclimber" | | Gilera GFR * 2 Moto Morini 2C/375 Morini 350 "Forgotten Error" | +-------------------------------------------------------------------+
Well, it's noisy compared wih a Jap engine, sure, but anyone who'd never heard (for example) a Ducati lump before wouldn, on first hearing (say) a 900SS, would assume it was about to explode. <Thinks> OK, as you were.
In communiqué <1jq6tm0.zvitjkfqo55gN%>, It becomes more unpleasant when riding at around 4000 rpm under light load. Still, I'm glad to hear my mechanical sympathy hasn't totally deserted me. Perhaps I've caught it early enough for it not to have damaged the crank journals. Still think the cards are on me coming back from France without it. [Aside for UKRM ears only: Lac Vassiviere is pretty deep in parts] -- +-------------------------------------------------------------------+ | Pete Fisher at Home: | | Voxan Roadster Yamaha WR250Z/Supermoto "Old Gimmer's Hillclimber" | | Gilera GFR * 2 Moto Morini 2C/375 Morini 350 "Forgotten Error" | +-------------------------------------------------------------------+