New carb build leads to horrendous speed wobble.
- Thread starter jdugen
- Start date
steph
Hero member
- Location
- Torgny, Belgium
Paul Marx said:
Hi Paul,
Good to know.
AFAIK new StreetSmarts are available since early 2013 though.
S.
Steph said:
Yes, put a set on in the winter of 2013.
Same tread pattern as the set I had on the bike with about 15 000 km on the back, second one, and probably 30 000 on the front.
They used to be called Arrowmax GT 501, now become Streetsmart. Different rubber or marketing ploy?
Paul
steph
Hero member
- Location
- Torgny, Belgium
Paul Marx said:
Yes Paul same pattern but new 2013 casing and rubber compounds.
According to a "tires guy" I had a talk with last week Dunlop made a lot of progress renewing and improving their range.
S.
jdugen
Junior member
- Location
- Manchester UK
Hi all.......
(Written in a slightly defensive tone, well, I have been intensely involved in making up carb banks and all the other things that life throws at you).
Had her up on the hoist to check head and swinging arm bearings, chain alignment, fork alignment, everything I could think of. Decided to whip off the shocks to check they were working properly........ Oh dear, I honesty do NOT make these kinds of mistakes...... But, one shock set to hardest, the other.. to softest.... In my defense, the two alloy cams both looked to be in the same position.... No, no defense really.
Anyway, weave and shake all disappreared. Still on the old rubber, was going to the tyre people last Friday, but the Govt. has given the working people a Bank holiday weekend so the lazy sods are lolling around drinking beer and enjoying themselves instead of being at my beck and call! I blame Europe!
Cheers all.
A quick p.s. to Vince. What size jets did you wind up with? I've reamed the standard jets out to the delli's size, runs fine with no pinking, but the plug tips are actually clean metal, with no deposits or colouration, (so its hard to see what the mixture is actually doing).
(Written in a slightly defensive tone, well, I have been intensely involved in making up carb banks and all the other things that life throws at you).
Had her up on the hoist to check head and swinging arm bearings, chain alignment, fork alignment, everything I could think of. Decided to whip off the shocks to check they were working properly........ Oh dear, I honesty do NOT make these kinds of mistakes...... But, one shock set to hardest, the other.. to softest.... In my defense, the two alloy cams both looked to be in the same position.... No, no defense really.
Anyway, weave and shake all disappreared. Still on the old rubber, was going to the tyre people last Friday, but the Govt. has given the working people a Bank holiday weekend so the lazy sods are lolling around drinking beer and enjoying themselves instead of being at my beck and call! I blame Europe!
Cheers all.
A quick p.s. to Vince. What size jets did you wind up with? I've reamed the standard jets out to the delli's size, runs fine with no pinking, but the plug tips are actually clean metal, with no deposits or colouration, (so its hard to see what the mixture is actually doing).
Mine started with 145 mains,after a couple of dino visits it ended at 172 but my 3c is far from std.10/1 pistons.41mm x 34mm valves,very very big ports,Reds very big exhaust system,F1 cam profiles in 180 configuration,John Wilson Ignition,Setup by just about every Laverda expert in south east Australia ,John Wilson has worked on it ,Reds worked on it,Steve Bs worked on it,Marty and Will have worked on it.It goes very well after all that.
jdugen
Junior member
- Location
- Manchester UK
Thanks Vince, though not exactly a benchmark for a standard 1000 Jota! Does that thing of yours suck kittens and small children into its bellmouths!?
Anyone out there with a more sane state of tune running the Kei Hins?
As an incidental, this lead free stuff really makes mixture diagnosis difficult. How the hell can you tell whats going on when there is little or no residue on the plug tips? Nothing, even after a steady Mway run of thirty miles or so, and that at 3rd lane cruising speed. As it seems perfectly happy, hardly hot and with no bluing of the stainless down pipes, I'm pretty sure I'm as near on the money as can be.
As another incidental. I'm still on the BTZ ignitors, but the ignition seems to be fine, no particular lurching around 4000 RPM that I've noticed, (so far, I might become more aware as I get used to her).
Just need to throw some more money at a front tyre and then we should be ready for some summer canters and then the Manx GP.
Anyone out there with a more sane state of tune running the Kei Hins?
As an incidental, this lead free stuff really makes mixture diagnosis difficult. How the hell can you tell whats going on when there is little or no residue on the plug tips? Nothing, even after a steady Mway run of thirty miles or so, and that at 3rd lane cruising speed. As it seems perfectly happy, hardly hot and with no bluing of the stainless down pipes, I'm pretty sure I'm as near on the money as can be.
As another incidental. I'm still on the BTZ ignitors, but the ignition seems to be fine, no particular lurching around 4000 RPM that I've noticed, (so far, I might become more aware as I get used to her).
Just need to throw some more money at a front tyre and then we should be ready for some summer canters and then the Manx GP.