OK, picture this, and please indulge me because it's not been a great day.....
Nice new qualifier RR's fitted, but on fitting noticed that the chain was beyond stretch, so ordered a new chain and sprocket set (Triple S chain)
So a few days ago, the chain and sprocket got fitted, the link plate on the chain was torqued up to 20 NM as per the guide supplied with the chain riveting tool. All aligned, and play on the chain checked and adjusted.
Flash forward to 2:30 today, Missus allowed me to play, as long as I picked up some plants while out, so set off in a 30 limit for about 2 miles, so far so good.
Reached the National speed limit signs, and started to wind it on. Suddenly there's a bang, the engine stops dead, and I'm freewheeling.
Stop the bike, the chain is dangling out of the bottom of the fairing, get off check all my limbs are there first then check the bike, which now has a chunk out of the carbon fibre rear mudguard...gutted.
OK, what else......oh, the chain guard is smashed as well. That's not good.
Wheel the bike home take the fairing off, front sprocket cover smashed too...this gets better. When it smashed the sprocket cover, it also smashed the aluminium mounting for the sprocket cover, where the top bolt goes in. It was still attached so I've got it, but I'm guessing that superglue won't help with this. On closer examination, the chain has jammed between the sprocket and casing, so I've had to trash the remnants of the chain to get it off.
Holy crankcases batman! What a day.
I fired up the engine, and everything sounds okay, which is a good thing, but where do I go from here...
1. I found the link on the road but no link plate, so I'm guessing that was where the problem was. I guess I have no comeback? I've fitted a chain or two in my time, so pretty confident I did it right. I had my doubts about triple s last night, and this seems to have confirmed it.
2. OK, the important and potentially expensive bit, the crankcase. The way I see it I have 5 options:
Throw the broken bit away and pretend it never existed;
Remount it in place, after all it has got a steel retaining plate that should stop it going anywhere, not too keen on this one though;
Have an aluminium welder do his thing on it, I'm guessing that's pretty much a full stripdown of the engine though;
Get some of that HTS-2000 from http://www.aluminiumrepair.co.uk, but again, I guess I would need a full stripdown....or if I was pretty handy with a pencil flame, would I get away with it??
New engine, or replace crankcases. Crankcases new at £883 made me wince a bit, so it would be second hand motor for £500, or second hand crankcases at £250, obviously on top of getting a new DECENT chain. Not a favoured option.
So, be gentle with me, I've had a pants day anyway, but if you can advise it would be appreciated.
Steve
Nice new qualifier RR's fitted, but on fitting noticed that the chain was beyond stretch, so ordered a new chain and sprocket set (Triple S chain)
So a few days ago, the chain and sprocket got fitted, the link plate on the chain was torqued up to 20 NM as per the guide supplied with the chain riveting tool. All aligned, and play on the chain checked and adjusted.
Flash forward to 2:30 today, Missus allowed me to play, as long as I picked up some plants while out, so set off in a 30 limit for about 2 miles, so far so good.
Reached the National speed limit signs, and started to wind it on. Suddenly there's a bang, the engine stops dead, and I'm freewheeling.
Stop the bike, the chain is dangling out of the bottom of the fairing, get off check all my limbs are there first then check the bike, which now has a chunk out of the carbon fibre rear mudguard...gutted.
OK, what else......oh, the chain guard is smashed as well. That's not good.
Wheel the bike home take the fairing off, front sprocket cover smashed too...this gets better. When it smashed the sprocket cover, it also smashed the aluminium mounting for the sprocket cover, where the top bolt goes in. It was still attached so I've got it, but I'm guessing that superglue won't help with this. On closer examination, the chain has jammed between the sprocket and casing, so I've had to trash the remnants of the chain to get it off.
Holy crankcases batman! What a day.
I fired up the engine, and everything sounds okay, which is a good thing, but where do I go from here...
1. I found the link on the road but no link plate, so I'm guessing that was where the problem was. I guess I have no comeback? I've fitted a chain or two in my time, so pretty confident I did it right. I had my doubts about triple s last night, and this seems to have confirmed it.
2. OK, the important and potentially expensive bit, the crankcase. The way I see it I have 5 options:
Throw the broken bit away and pretend it never existed;
Remount it in place, after all it has got a steel retaining plate that should stop it going anywhere, not too keen on this one though;
Have an aluminium welder do his thing on it, I'm guessing that's pretty much a full stripdown of the engine though;
Get some of that HTS-2000 from http://www.aluminiumrepair.co.uk, but again, I guess I would need a full stripdown....or if I was pretty handy with a pencil flame, would I get away with it??
New engine, or replace crankcases. Crankcases new at £883 made me wince a bit, so it would be second hand motor for £500, or second hand crankcases at £250, obviously on top of getting a new DECENT chain. Not a favoured option.
So, be gentle with me, I've had a pants day anyway, but if you can advise it would be appreciated.
Steve
