well Taff, were all some kind off mechanics. The scale goes from having some aptidude to nil, but i would say its a bit odd, that there apears to be a lot less metal to the starboard side of the chain wheel, why is this? well i can only assume that they have done some dynamic balancing and this is the result. Although visually this looks wrong.
That, my friends, is a blown up image of an escapement movement cog wheel, (shown without the spring), from a quebec silver plated pocket watch circa 1840.
Joined Jun 2005
449 Posts | 1+
Kings Farth
Subliminal messages embedded. Can you see the oranges mirrored in the lobes?, and "Taffmeisters.co.uk" in the background, if you play it backwards.
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
it looks different when its spinning wink wink
I have found a black cam gear sprocket its a new process costs about 25K per wheel but you get all the upper cylinder and drive side gears done too.
I have found a black cam gear sprocket its a new process costs about 25K per wheel but you get all the upper cylinder and drive side gears done too.
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
Joined Nov 2001
17K Posts | 774+
Ely, England
you can't see it but the cam sprocket is fitted corrctly. the rivetted stopper can be seen at the 1 o clock.
....and tha's not my email address. it's a friggin cardboard box that was next to me in the workshop.
i'm looking for one mutton head to spot what's wrong - from the factory.
regards
Taffy
....and tha's not my email address. it's a friggin cardboard box that was next to me in the workshop.
i'm looking for one mutton head to spot what's wrong - from the factory.
regards
Taffy
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
teeth look a bit wonky like some old fellas in the local
I thought you wanted us to say the 3 oles are lopsided because of the decomp weight wot comes out when it spins, so its balanced while spinning but lopsided when not.
regards
Bushie
Well Taff, having not had a Berg apart, but working on very basic principles, the camsprocket is on 180 degrees from where it should be, all the weight is on the same side as the cam lobes, which renders the counterbalancing effect of the holes in the camsprocketuseless.
How did i go mr taffy sir?!
Azza.
How did i go mr taffy sir?!
Azza.
Joined Nov 2001
17K Posts | 774+
Ely, England
dada!
a wiksch wins the ****y prize!
how could you lot not see that! the throw of the cam lobes and the throw of he cam sprocket are on the same side!!!!!!!!!!!!!
now what you can't see is the decomp lobe
it's out of sight at the 3 o clock which means that the full body of the sprcket at 9 o clock is making them balanced. that's good!
but......
if you turn he sprocket 180d, yes the lobes will be balanced against the sprocket holes tht's true BUT the hole in the sprocket that WAS balancing the decomp bob will be on the wrong side and screwing it again!
so the answer has to be to turn the sprocket around and over! all at the same time! but......
regards
Taffy
a wiksch wins the ****y prize!
how could you lot not see that! the throw of the cam lobes and the throw of he cam sprocket are on the same side!!!!!!!!!!!!!
now what you can't see is the decomp lobe
it's out of sight at the 3 o clock which means that the full body of the sprcket at 9 o clock is making them balanced. that's good!
but......
if you turn he sprocket 180d, yes the lobes will be balanced against the sprocket holes tht's true BUT the hole in the sprocket that WAS balancing the decomp bob will be on the wrong side and screwing it again!
so the answer has to be to turn the sprocket around and over! all at the same time! but......
regards
Taffy
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
mine is the same 
so was the 550 ?
whats going on with that?
can't flip the sprocket cause its offset, need a spacer?
or is it some freak lopsided balancing trick and the factory has it right?
so was the 550 ?
whats going on with that?
can't flip the sprocket cause its offset, need a spacer?
or is it some freak lopsided balancing trick and the factory has it right?
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
Ok taffy ****ys all round I stuck mine on knife edges
when thedecomp weight is retracted (low rpm) the heaviest point is 6 o clock as in your pic
when the weight is engaged (high rpm) the heaviest point is 3 o clock
so you could drill another ole at 4 o clock or weld a weight on at 9 o clock to balance it proper sounds like a busy schedule
regards
Bushie
when thedecomp weight is retracted (low rpm) the heaviest point is 6 o clock as in your pic
when the weight is engaged (high rpm) the heaviest point is 3 o clock
so you could drill another ole at 4 o clock or weld a weight on at 9 o clock to balance it proper sounds like a busy schedule
regards
Bushie
Joined Nov 2001
17K Posts | 774+
Ely, England
a 1.7mm recess for the body away from the teeth. x 2 and that's a turn and move of 3.5mm outwards.
on this face the sprocket is flush.
this photo is taken with the lobes at 11 and 1 o clock high. in my book the lobe will shootto 6 o clock.
where we came in! this is now a flipped view of the first photo so that they are easier to follow. to assess the pair you turn ether around.... the unseen decomp in this photo is at 9 o clock.
i will in the next few days assess how true the top sprocket is to the bottom one. that's the first thing.
the second thing is: we're not interested at all in the balance of the engine trying to start bushy!!! we're interested in 'your 3 o clock' mate!
thirdly, there is nothing to say that the sprocket can't be spaced out 3mm with a disc that is circular and rebalances the whole issue! ok you have the decomp but.....
regards
Taffy
on this face the sprocket is flush.
this photo is taken with the lobes at 11 and 1 o clock high. in my book the lobe will shootto 6 o clock.
where we came in! this is now a flipped view of the first photo so that they are easier to follow. to assess the pair you turn ether around.... the unseen decomp in this photo is at 9 o clock.
i will in the next few days assess how true the top sprocket is to the bottom one. that's the first thing.
the second thing is: we're not interested at all in the balance of the engine trying to start bushy!!! we're interested in 'your 3 o clock' mate!
thirdly, there is nothing to say that the sprocket can't be spaced out 3mm with a disc that is circular and rebalances the whole issue! ok you have the decomp but.....
regards
Taffy
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
ahm its 10:42pm here taffy
not 100% sure i got this right but knife edges is knife edges right so I jammed the decomp weight "out" and tested the balance of the cam as running and added some weights to balance.....I reckon the second last photo in above post needs 5 - 6 gm added at 9 o clock just inside the teeth or drill some kind of hole at 2:30 to balance it for running conditions.
I could be wrong it happens all the time ha ha
regards
Bushie
Joined Nov 2001
17K Posts | 774+
Ely, England
it's almost as though the decomp balances the sprocket but that the cam lobes are unbalanced!
the easiest thing to do is to bond the decomp in the open position (the spring fitted but disconnected) and balance the assembly.
don't be shocked if the two sprockets aren't even in line fellas! they phucked so much up when they did these bikes.
regards
Taffy
the easiest thing to do is to bond the decomp in the open position (the spring fitted but disconnected) and balance the assembly.
don't be shocked if the two sprockets aren't even in line fellas! they phucked so much up when they did these bikes.
regards
Taffy
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