Early Triple throttle cable question

Ernesto

Ernesto

Hero member
Location
Hamburg, Germany
Hi,
as I've never seen one: isn't the throttle cable splitter
on early triples the same as the one for the choke cables?
A german triple owner tells me about a part that has the shape
of a film canister, never heard of or seen one.
Thanks in advance,
Ernesto
 
Ernesto said:
Hi,
as I've never seen one: isn't the throttle cable splitter
on early triples the same as the one for the choke cables?
A german triple owner tells me about a part that has the shape
of a film canister, never heard of or seen one.
Thanks in advance,
Ernesto
Click to expand...

I don't know..........But I wouldn't have that choke cable splitter on my throttle cable! No way!

Safety first!
 
But I wouldn't have that choke cable splitter on my throttle cable!
Click to expand...
At least the 2-cable splitters for the twins are the same for choke and throttle.
And afaik the early triples carbs had no device to fasten the linkage system,
resp. the mounting bracket.

Ernesto
 
Rather certain the early triples had a second splitter for the throttle.  Know of a conversion done on a later triple, had it myself many years ago.  Splitter works well.  Standard fitment (2-way) on SF2 and 3 with stock ND switchgear.

piet
 
Early triples do have a 1 into three cable splitter for the throttles, the splitter is the same as the chokes but the cables from the splitter to carny have unique length inner cables
You may choose to fit lighter springs into the throttle slides as there is quite a bit of resistance with all those cables.
 
mauricejota7604 said:
You may choose to fit lighter springs into the throttle slides as there is quite a bit of resistance with all those cables.
Click to expand...

I heard the reasoning for the heavy slide springs was to ensure the throttle would close after being opened wide: it was feared the incoming air velocity would cause the slides to stick.. I forget whether it was Marco or Piet who suggested the easy fix was to clip about 1/3 of the length off the springs.


AndyW 8)
 
I'd be less inclined to cut the springs down with the 3-cable splitter system than with the single cable and shaft system. Reason being that there's more friction in the three cable setup so the springs need to be sttronger to close the throttle against that friction. It means the throttle will be heavy, but that's the nature of the beast. If you want to cut the springs dow, I'd suggest you fit a set of carbs with the shaft actuators.
 
Dellortoman said:
I'd be less inclined to cut the springs down with the 3-cable splitter system than with the single cable and shaft system. Reason being that there's more friction in the three cable setup so the springs need to be sttronger to close the throttle against that friction. It means the throttle will be heavy, but that's the nature of the beast. If you want to cut the springs dow, I'd suggest you fit a set of carbs with the shaft actuators.
Click to expand...
I doubt very much that cable friction would have much to do with heavy throttle springs and sticking throttles - IMHO they just use stock Dell Orto springs in each carby and let the poor user battle 3x (any four cyl bikes use those carbs??? Holy shaez!). I guess they figured real men had RH grip to match their LH clutch levers!

A twin uses the same setup, but obviously multiplied by 2/3. I cut my springs down and went quick-action twistgrip barrel with no ill-effects. When I raced the Perth Castrol 4-Hour on the 1200 that two fistfuls to get full throttle exiting corners gave me the irrits big time!  :-\
 
I'm not sure what it is maybe the routing of the individual cables but riding from three cables to one is much harder I have nipped a couple of coils off to ease it a bit and now tend to get a bit of hang up on throttle closing
:(
 
Dellortoman said:
I'd be less inclined to cut the springs down with the 3-cable splitter system than with the single cable and shaft system. Reason being that there's more friction in the three cable setup so the springs need to be stronger to close the throttle against that friction. It means the throttle will be heavy, but that's the nature of the beast. If you want to cut the springs down, I'd suggest you fit a set of carbs with the shaft actuators.
Click to expand...
Seriously doubt cable friction would be a source of worry - much more likely to have issues because at low (near idle) throttle settings it's the vacuum dragging the slides hard against the front of the carb bores that create sicking, especially once either slides or slide bores or both are worn. Cable friction would be minimal. Seems to me Dell'Ortos came with one spring and you lived with it whether you ran one, two, three or ...  :o ... four of the suckers. Bikes made for real men - throttle to match the gorilla-grip clutch action.

Long travel throttles eased the pain but shifted the problem elsewhere - racing a 1200 in the 1978 Perth Castrol 4-Hour the ol' two-handfulls-for-full-throttle exiting every turn gave me the serious  :-\
 
Piranha Brother 2 said:
Seriously doubt cable friction would be a source of worry - much more likely to have issues because at low (near idle) throttle settings it's the vacuum dragging the slides hard against the front of the carb bores that create sicking, especially once either slides or slide bores or both are worn. Cable friction would be minimal. Seems to me Dell'Ortos came with one spring and you lived with it whether you ran one, two, three or ...  :o ... four of the suckers. Bikes made for real men - throttle to match the gorilla-grip clutch action.

Long travel throttles eased the pain but shifted the problem elsewhere - racing a 1200 in the 1978 Perth Castrol 4-Hour the ol' two-handfulls-for-full-throttle exiting every turn gave me the serious  :-\
Click to expand...

Dellorto supply 3 different throttle springs. The std Lav spring is medium I think
 
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