- Joined
- Jan 16, 2015
- Messages
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There is no stock , I have been waiting for these.Surprised you’re gonna bother… thought you’d have had Ollies shorties on there by now…
There is no stock , I have been waiting for these.Surprised you’re gonna bother… thought you’d have had Ollies shorties on there by now…
So… occasionally you get a random one that was accidentally rightTo me it sounds just the same as many I see. They all vary....occasionally you'll get a noticeably quieter one, which I assume is just a random tolerance build up that fell right.
Strangely the one I owned was very quiet mechanically, never made any strange noises at all. My mate who bought it from me says the same.So… occasionally you get a random one that was accidentally right
Mine was way noisier than the one in the pic. And mine sounded the same as any other I came across.
The horrid noise was the main reason the love died…
My mates one is very quietStrangely the one I owned was very quiet mechanically, never made any strange noises at all. My mate who bought it from me says the same.
Pretty much, yes.So… occasionally you get a random one that was accidentally right
Mine was way noisier than the one in the pic. And mine sounded the same as any other I came across.
The horrid noise was the main reason the love died…
You have done a lot of work to your primary and clutch. There must be some bedding in going on with the basket and ring gear hence the silver (aluminum) . I have read and seen that some 961 have the silver color in the primary oil when drained . I don't know what else it could be other than aluminum from the clutch basket. Have you considered a new Birmaham Norton 961 clutch assembly ? I have never seen this silver color in my primary oil , but I have the later cast basket not the billet one. There is a drain plug of the correct thread available from a magnetic drain plug maker . It is 12mm long and requires a couple of crush washers to get the correct protrusion into the primary. The head is also larger but its not too noticeable. You could also replace it with a larger more available size.I wish my 2011 sounded like the one in the film. I have put in a new complete backlash gear, new bearings in the clutch basket (including a double row one on the inner), drilled out the rivets (which had been welded up before) and replaced with HT bolts and pinned the ring gear. I did find some wear on the centre of the basket and found rotating it 180° from its original position got rid of the play I could feel between the basket and the drive gear plate. (Obviously it will return eventually). That did quieten down some of the rattle at idle that I heard with the clutch out. I had also put in Bel-Ray Sport transmission oil, but the clutch and gear changes didn't seem to like it, so I drained it out. I was alarmed at the amount of silver content in the oil after only a few hundred miles, so I pulled the primary again to see what was going on or if I had screwed up something on reassembly. The original idler gear was replaced as it showed wear on one side of the flange on which the scissor gear rotates (which must be a miniscule amount). During the subsequent inspection of the new one I found witness marks in exactly the same area so there is definitely some big force acting on it. I could not find anything untoward so cleaned it all up with brake cleaner. The amount of metal content that came out from the joint between the ring gear and the backplate was unbelievable. It must act as a centrifuge. I presume the metal content is the new idler gear running in and the stuff behind the ring gear has just accumulated over time. While I had it apart, I drilled out the centre of the drain plug and JB welded a strong magnet to it. After what I had found, I would strongly recommend doing the same or buying one. (Maybe the later bikes already have one fitted?)
I also changed the timing chain and tensioners from the early metal version to the nylon type hoping that would help on the noise front, but it still sounds bloody awful TBH.
On initial start-up it's acceptably quiet but the noise gets progressively worse as it warms. Also Under load it also sounds like a jackhammer, is that normal, or should I be looking somewhere else?
I would really like to get to the bottom of it, as I love the bike, but the noise really gets me down.
On the Facebook 961 page somebody asked what you would call a group of 961's - I suggested "A Clatter"
Thanks Tony, I'll look into it.You have done a lot of work to your primary and clutch. There must be some bedding in going on with the basket and ring gear hence the silver (aluminum) . I have read and seen that some 961 have the silver color in the primary oil when drained . I don't know what else it could be other than aluminum from the clutch basket. Have you considered a new Birmaham Norton 961 clutch assembly ? I have never seen this silver color in my primary oil , but I have the later cast basket not the billet one. There is a drain plug of the correct thread available from a magnetic drain plug maker . It is 12mm long and requires a couple of crush washers to get the correct protrusion into the primary. The head is also larger but its not too noticeable. You could also replace it with a larger more available size.
This is from Dimple brand :
M10x1.0x12 Magnetic Drain Plug
For early BMWs and many other applications.
$35.95
Perhaps I could fill the primary with greaseIf you dont change the primary oil, eventually the metal debris forms a thick paste....which dampens the noise
Ive got motul 300v 15w50 in my engine and primary, along with an old billet clutch. Seems pretty quiet....but Ive not done any long term testing.
SawdustPerhaps I could fill the primary with grease
Stu,TVS built 961's are currently msva'd...they'd never get that through euro 5, especially given that euro 4 kinda had to be blagged to get through five years ago. So as they aint homologated, they cant be sold new overseas.