Nel Post n. 27 si è accennato al problema della ruota libera. Quest’ultima nacque, in origine, come dispositivo meccanico che permetteva di disaccoppiare il gruppo pignoni dal mozzo della ruota motrice di una Cycling, in order to give the rider the ability to stop pedaling at any time, without, thereby, immediately stops the motion of the bike (see http://it.wikipedia.org/wiki/Ruota_libera ).
a bike there are two free-wheel a, as in bicycles, is at the hub of the rear wheel, the other hand, is located in that part of the engine that is very close to the pedal (or scooter) starter. It 'just this second wheel, which referred the Post No 27 dealing with the possible causes of a difficult or engine misfire.
The freewheel, driven by the motor di avviamento, fa presa sull’albero motore mediante una frizione a cilindretti, soltanto per quella frazione di secondo necessaria a produrre l’accensione, dopodiché, iniziando a girare vorticosamente, tale albero si svincola da essa.
Avveuto un cospicuo numero di accensioni (soprattutto se malfatte), l’ingranaggio della ruota libera, come si dice in gergo, potrebbe “sgranarsi”. Sintomi? Pigiando il pulsante “Start” si sente un rumore di ferraglia che somiglia vagamente a quello di un macinacaffè o di una marcia male ingranata ed il motore tenderebbe sempre più frequentemente a non accendersi. Tuttavia la moto si accenderebbe perfettamente a spinta (cioè ingranando la prima dopo averle made to reach a certain speed, perhaps in a fall) and this is therefore the ultimate proof that the problem of power was due solely to the "grainy" freewheel. But what is this phenomenon? Basically
in severe abrasion of metal rods that act as bearings and "meshed" free wheel on the crankshaft by the clutch itself. Every time these cylinders undergo a lightning shock rotary becomes abrasive when they were thoroughly lubricated and ignition of the engine were not successful. In the pictures below to link
http://www.aea.it/tecnodisplay/friends/friends_bikers.htm , “ruota libera”, potete vedere in quale penoso stato questi cilindretti si siano ridotti nella Dragstar 1100 di un mio amico di club (v. anche la descrizione dettagliata della vicenda) e come egli, oltre a farli sostituire con cilindretti nuovi di fucina, abbia anche provveduto a far fare un buco del diametro di 3 mm sul bordo della ruota sulla quale essi scorrono, ed uno di 6 o 7 mm di diametro sull’albero motore, per permettere all’olio motore di fluire più copiosamente su di essi, proprio al fine di evitare l’insorgere del medesimo problema ad un tot di accensioni effettuate dopo tale sostituzione.
Se il problema dello sgranamento dei cilindretti della ruota libera non si fosse ancora manifestato could, with little expense, do, in terms of prevention, the above drilling operations.
I, of course, does not guarantee anything on this "remedy" because I have not personally experienced, and there are no reliable statistics to confirm the full validity, despite the obvious good sense.
Unfortunately, the mechanism of the freewheel Virago is very different from the analogous mechanism present on the Dragstar (see the post at: http://images.google.it/imgres?imgurl=http://img22 .imageshack.us/img22/6102/forze.jpg & imgrefurl http://www.custommania.com/viewtopic.php =% 3Fid% 3D22674 & usg = __cN7SiJnS5H_qijFKHkYUvoqnrz8 = \u200b\u200b& h = 480 & w = 640 & sz = 59 & ; hl = en & start = 1 & um = 1 & tbnid = dhYwcIE3HvDYoM: & tbnh = 103 & tbnw = 137 & prev = / images% 3Fq% 3Druota 2Blibera%%%% 26hl 2Bvirago 3Dit 26rlz%%% 26sa% 3D1T4ADBF_itIT241IT241 26um% 3D1% 3DN ), so if you want to get a more copious flow of oil from the engine room, you should carefully study whether or where to drill or enlarge the holes adduttivi oil already present without causing dangerous structural weakening. So, to dissolve these doubts I refer to the comments of those who are more experienced than me.
The onset of this defect is almost ineffable usually quite erratic, but on Dragstar 1100 that I mentioned above, it occurred to 38,000 km. However it is possible that, regardless of the total mileage traveled by the vehicle, it can occur even earlier, when the bike was used very frequently. To have a statistical reliability of such a defect, you should then count the number of uses of the "start" and their last until the first signs of illness in question. Transaction is impractical, in the absence of a separate electric meter for that event. For a motorcyclist
really attentive to the efficiency of their vehicles would not, therefore, that collect information about the updates made improvements over time by the manufacturer on its freewheeling motorcycle model, and, if need be, act before possible in order to prevent the onset of the problem, because to make a hole and then extend a few millimeters the diameter of a hole that already exists per aumentare la lubrificazione nella camera della ruota libera, è certamente un’operazione assai meno costosa di quella che si sostanzia nella sostituzione di componenti usurati con componenti nuovi. Non si sta parlando di pezzi “pregiati”: per quanto riguarda le Virago, per esempio, ci sono grossisti (soprattutto inglesi) che via internet evadono ordinativi di componenti per ruota libera a prezzi davvero molto bassi. Più che altro il problema economico è dato, come al solito, dal prezzo della manodopera.
La ruota libera delle Virago, come si vede dalle foto del terzo link citato in questo post, comprende una ruota dentata che, purtroppo, non fa da paratia contenitiva del lubrificante, ed una frizione a tre cilindretti, equipped with a roof which could face slippage and deformation resulting from overheating damage.
My Virago XV 1100 is not far from 38,000 km, was registered in 1999, but is a model of 1994: Even my friends in the motorcycle club would not know exactly tell me if the diameters of the crossing points within the engine oil the chamber of the clutch of this sub-model have already been optimized by the manufacturer in order to avoid the problem we are talking about, so, now, I'm still looking for useful data. Maybe, between 400 km, take courage in both hands and open the left side of the engine cover to see how you put this device, however, act accordingly.
course expect more feedback and advice from experts to improve this post even today.
a bike there are two free-wheel a, as in bicycles, is at the hub of the rear wheel, the other hand, is located in that part of the engine that is very close to the pedal (or scooter) starter. It 'just this second wheel, which referred the Post No 27 dealing with the possible causes of a difficult or engine misfire.
The freewheel, driven by the motor di avviamento, fa presa sull’albero motore mediante una frizione a cilindretti, soltanto per quella frazione di secondo necessaria a produrre l’accensione, dopodiché, iniziando a girare vorticosamente, tale albero si svincola da essa.
Avveuto un cospicuo numero di accensioni (soprattutto se malfatte), l’ingranaggio della ruota libera, come si dice in gergo, potrebbe “sgranarsi”. Sintomi? Pigiando il pulsante “Start” si sente un rumore di ferraglia che somiglia vagamente a quello di un macinacaffè o di una marcia male ingranata ed il motore tenderebbe sempre più frequentemente a non accendersi. Tuttavia la moto si accenderebbe perfettamente a spinta (cioè ingranando la prima dopo averle made to reach a certain speed, perhaps in a fall) and this is therefore the ultimate proof that the problem of power was due solely to the "grainy" freewheel. But what is this phenomenon? Basically
in severe abrasion of metal rods that act as bearings and "meshed" free wheel on the crankshaft by the clutch itself. Every time these cylinders undergo a lightning shock rotary becomes abrasive when they were thoroughly lubricated and ignition of the engine were not successful. In the pictures below to link
http://www.aea.it/tecnodisplay/friends/friends_bikers.htm , “ruota libera”, potete vedere in quale penoso stato questi cilindretti si siano ridotti nella Dragstar 1100 di un mio amico di club (v. anche la descrizione dettagliata della vicenda) e come egli, oltre a farli sostituire con cilindretti nuovi di fucina, abbia anche provveduto a far fare un buco del diametro di 3 mm sul bordo della ruota sulla quale essi scorrono, ed uno di 6 o 7 mm di diametro sull’albero motore, per permettere all’olio motore di fluire più copiosamente su di essi, proprio al fine di evitare l’insorgere del medesimo problema ad un tot di accensioni effettuate dopo tale sostituzione.
Se il problema dello sgranamento dei cilindretti della ruota libera non si fosse ancora manifestato could, with little expense, do, in terms of prevention, the above drilling operations.
I, of course, does not guarantee anything on this "remedy" because I have not personally experienced, and there are no reliable statistics to confirm the full validity, despite the obvious good sense.
Unfortunately, the mechanism of the freewheel Virago is very different from the analogous mechanism present on the Dragstar (see the post at: http://images.google.it/imgres?imgurl=http://img22 .imageshack.us/img22/6102/forze.jpg & imgrefurl http://www.custommania.com/viewtopic.php =% 3Fid% 3D22674 & usg = __cN7SiJnS5H_qijFKHkYUvoqnrz8 = \u200b\u200b& h = 480 & w = 640 & sz = 59 & ; hl = en & start = 1 & um = 1 & tbnid = dhYwcIE3HvDYoM: & tbnh = 103 & tbnw = 137 & prev = / images% 3Fq% 3Druota 2Blibera%%%% 26hl 2Bvirago 3Dit 26rlz%%% 26sa% 3D1T4ADBF_itIT241IT241 26um% 3D1% 3DN ), so if you want to get a more copious flow of oil from the engine room, you should carefully study whether or where to drill or enlarge the holes adduttivi oil already present without causing dangerous structural weakening. So, to dissolve these doubts I refer to the comments of those who are more experienced than me.
The onset of this defect is almost ineffable usually quite erratic, but on Dragstar 1100 that I mentioned above, it occurred to 38,000 km. However it is possible that, regardless of the total mileage traveled by the vehicle, it can occur even earlier, when the bike was used very frequently. To have a statistical reliability of such a defect, you should then count the number of uses of the "start" and their last until the first signs of illness in question. Transaction is impractical, in the absence of a separate electric meter for that event. For a motorcyclist
really attentive to the efficiency of their vehicles would not, therefore, that collect information about the updates made improvements over time by the manufacturer on its freewheeling motorcycle model, and, if need be, act before possible in order to prevent the onset of the problem, because to make a hole and then extend a few millimeters the diameter of a hole that already exists per aumentare la lubrificazione nella camera della ruota libera, è certamente un’operazione assai meno costosa di quella che si sostanzia nella sostituzione di componenti usurati con componenti nuovi. Non si sta parlando di pezzi “pregiati”: per quanto riguarda le Virago, per esempio, ci sono grossisti (soprattutto inglesi) che via internet evadono ordinativi di componenti per ruota libera a prezzi davvero molto bassi. Più che altro il problema economico è dato, come al solito, dal prezzo della manodopera.
La ruota libera delle Virago, come si vede dalle foto del terzo link citato in questo post, comprende una ruota dentata che, purtroppo, non fa da paratia contenitiva del lubrificante, ed una frizione a tre cilindretti, equipped with a roof which could face slippage and deformation resulting from overheating damage.
My Virago XV 1100 is not far from 38,000 km, was registered in 1999, but is a model of 1994: Even my friends in the motorcycle club would not know exactly tell me if the diameters of the crossing points within the engine oil the chamber of the clutch of this sub-model have already been optimized by the manufacturer in order to avoid the problem we are talking about, so, now, I'm still looking for useful data. Maybe, between 400 km, take courage in both hands and open the left side of the engine cover to see how you put this device, however, act accordingly.
course expect more feedback and advice from experts to improve this post even today.
[At the beginning of the post a picture of the starter motor of my Virago XV 1100, just behind the flow of the exhaust pipe of the cylinder head].
