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Feasty |
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Feasty World Chat Champion
Joined: 01 Nov 2006 Karma :
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Posted: 11:39 - 14 Mar 2019 Post subject: When it's time to put down the tools... |
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I've been doing a bit of work to my bike recently, bear in mind I'm a bit of a noob, so fitting new brake pads, oil change and fitting a scottoiler is a bit of a deal...
Decided I just wanted to get the scottoiler finished last night so carried on rather late into the night, got to routing and fixing the dispenser piping only to discover at the last minute... I was routing the piping down the left side of the bike, but the chain is on the right side!
That's when it's time to down tools and carry on another day, anyone done similar? ____________________ Previous: Aprilia Habana Retro 50cc (beauty), Yamaha SR125 (fell apart), Honda XR125 (nippy little commuter), Honda SLR650 (Geewhizz), Yamaha Diversion 900S (Smoooooth) written off courtesy of a stupid escaped horse.
(7 year gap), BMW F650 (Relaxing ride). Aprilia Caponord ETV1000 (Big and bold). Yamaha FZS600 (got me in trouble too quick!).
Current: Yamaha TDM 900 (Comfy, light but big, power when needed). |
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pepperami |
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pepperami Super Spammer
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wr6133 |
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wr6133 World Chat Champion
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Fisty |
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Fisty Super Spammer
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bhinso |
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bhinso World Chat Champion
Joined: 21 Jun 2008 Karma :
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Posted: 18:10 - 14 Mar 2019 Post subject: |
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I was once asked to get a pair of pliers.
And I came back with a pair of circlip pliers.
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Teflon-Mike |
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Teflon-Mike tl;dr
Joined: 01 Jun 2010 Karma :
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Posted: 18:33 - 14 Mar 2019 Post subject: |
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It's when you have lobingly put an engine back-together, with nicely rebored and honed liners, and new rings, and all new seals and gaskets; sworn an awful lot at the cam-chain and the valve-spring-compressor, and start to tidy up, extremely chuffed at a job well done....
Lift the tool-box up to put it away....
And find a single
Solitary
O-Ring seal....
Obviously NOT a used one
Underneath...
And then frantically spend as long again checking the parts book, and looking at the schematics, thinking "WHERE the Fluck does THIS belong"
You need to start worrying!
Hint: Look in the bin, for the torn gasket set wrapper, and the parts list printed on the cardboard on the back.... for ONE solitary O'-ring that says 'optional' or 'not used on' next to it!!!!
Extra Hint: Be very careful opening packets of new gaskets, DONT rip into them, preserve the backing board, and DO NOT, stick it in the puddle of oil under the engine! ____________________ My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?' |
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Suntan Sid |
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Suntan Sid World Chat Champion
Joined: 07 May 2009 Karma :
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Posted: 22:59 - 14 Mar 2019 Post subject: |
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I refuse to believe that there's anyone who's done an oil change and has forgot to put the sump plug back in before refilling.
You'll only do it once!
Many years ago a friend of mine had spent many, many, months restoring an Austin Healey Sprite, it was a complete nut and bolt refurb,
I'd helped him with a few bits and bobs.
He rang to tell me that he was going to start it up for the first time and invited me over for the event.
The key was turned and the engine spluttered into life.
To be honest, it didn't sound too good.
It was at this moment that my mate turned a whiter shade of pale and lunged to turn it off.
After much swearing he revealed that he'd just realised he'd forgot to fill the, freshly rebuilt, engine with oil!
His dad, (who'd been doing more than his fair share of funding for the project), then appeared wanting to know what all the fuss was about.
Upon being told of the mishap, he laughed his arse off and said "you'll be rebuilding that engine again then!"
Having stripped the engine, it turned out there wasn't any measurable damage, my mate had used copious amounts of oil when assembling the engine the first time.
True story! ____________________ "Everybody needs money, that's why they call it money!" |
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Travis Bickle |
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Travis Bickle Banned
Joined: 06 Jan 2019 Karma :
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Posted: 01:44 - 15 Mar 2019 Post subject: |
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mentalboy |
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mentalboy World Chat Champion
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The Shaggy D.A. |
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The Shaggy D.A. Super Spammer
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Jim Mc |
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Jim Mc Nearly there...
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Feasty |
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Feasty World Chat Champion
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rpsmith79 |
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rpsmith79 World Chat Champion
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The Shaggy D.A. |
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The Shaggy D.A. Super Spammer
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Travis Bickle |
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Travis Bickle Banned
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Posted: 19:23 - 15 Mar 2019 Post subject: |
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Polarbear |
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Dave.... |
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Dave.... Trackday Trickster
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Teflon-Mike |
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Teflon-Mike tl;dr
Joined: 01 Jun 2010 Karma :
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Posted: 10:24 - 16 Mar 2019 Post subject: |
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Jim Mc wrote: | I've never seen a bike with the chain on the right side? |
Here's another:-
https://cdn1.mecum.com/auctions/lv0118/lv0118-314668/images/1-1512601115530@2x.jpg?1516637006000
AN MZ ISDT. Although its a bit hidden in a flexible chain tray.
It's actually not the chain or transmission that necessarily determines which side the chain might be on, but the magneto.
Most simply, mounted on the end of the crank, the crank 'must' go the way that the magneto wants to 'cos the mag's making sparks at some degrees before TDC; if it went the other way round, it would reverse the spark-timing and you'd get them at some degrees after TDC.
Conventionally, most mag's are designed for the rotor to run anti-clock-wise... this is a legacy of aero-engines of the first-world-war era., with propeller on the front of the engine, so mag must go on the back.
When they started making motorbikes, they needed sparks, and to get them used proprietary off the shelf magneto's, where this convention was already well entrenched.
And in the pioneering era, most motorbikes didn't have much of a 'transmission', they had a leather belt, directly from the engine's crank to the back-wheel, and they often didn't have a clutch, they just moved 'something' possibly the engine itself, to put the belt under tension, or not, to make or break drive.
You want the back wheel to push you forwards, so it has to turn clock-wise as you look at it from the right hand side of the bike, pointing forwards.. so like Biggles aeroplane, you want the pulley that's going to tug the belt that turns the back-wheel to turn clock-wise, so that goes on one end of the crank, magneto goes on t'other, so has to turn anti-clock.
Now add gears.
Here's another one for you:-
https://cybermotorcycle.com/gallery/scott/images/Scott-1914-Two-Speed-2.jpg
I think that's a 1913 model 'Scott', which was probably one of the most pioneering of pioneering motorcycles. Alfred Scott, had devised the thing in his shed, and caused consternation when he entered a reliability trial with the thing... cos it had a 'kick-starter'. Unlike every-one else running up the road trying to bump-start their machines, apparently he just sat there until the starter set him off, then calmly prodded the kicker, and off he went. It was also a parallel twin two-stroke, half a century before the I think it was the Adler that inspired the Yamaha RD twins and even the Areal Arrow, but still. It had a plathora of what were to become 'advanced' features, including water-cooling, but significantly all-chain drive, and two-speed, changeable on the move 'gear-box'...
So.. add a gear-box, and now you still want the back-wheel to turn clock-wise as you look from the right. But with 'gears' potentially swapping the direction of rotation each time you gear two shafts together, you have to work back-wards from the wheel, and put the engine in so that it rotates the right way to drive it, and ultimately, using a propriety magneto, you have to start with a clock-wise drive from the non-magneto end...
Follow the logic; take a propriety anti-clock mag. Mount the engine conventionally so it rotates wheel-wise, now gear the end to a clutch, which will then turn 'anti-clock-wise'... input to a gearbox on the same shaft, and one or a number of gear-pairs on that shaft turning the out-put the opposite way, the sprocket to turn your back-wheel is going to be turning clock-wise again, begging a Right-Hand chain drive.
Use a chain primary drive, to turn the gearbox input the same direction as the crank, as would be common when engines and gearboxes were seperate components; (and long beyond actually!) but now, crank goes clock-wise, so does clutch, so does gear-box input, but now the out-pout sprocket is turning anti-clock... and the easiest way of correcting this rotation to push bike forwards is to swap the drive side, and put the chain drive on the other side.
To wit; short of it all is that the chain can be on either side, depending on the gearbox, and many many motorcycles have had RHS chains, for this reason, and almost always hinging on the preferred direction of rotation of the magneto.
One of the nicest examples of recent times is probably the Aprillia RS125 and derivatives.
https://upload.wikimedia.org/wikipedia/commons/e/ec/Aprilia_RS125_L-side.jpg
https://pictures.topspeed.com/IMG/jpg/201301/2012-cagiva-mito-sp525.jpg
The Cagiva Mito has a LHS chain, the RS a RHS chain.
When folk have had the notion to replace blown up 125 singles in these things, the Mito has commonly got Yamaha RD350YPVS motors, and with the chain drive the same side, there's been no big problem.
Try chucking an RD engine in a RS, and there is... and you cant even employ the expedience of turning the back wheel up-side down, cos of the slots in the swing-arm for the chain, and the suspension linage that hampers turning the swing-arm upside down as well... so folk turn to late era 250 and 500 'singles' from MX bikes, like a Husquavana 'cos they too have RHS chain out-put.
Here's yet another one:-
https://i2.wp.com/www.bike-urious.com/wp-content/uploads/Montesa-349-Right-Side.jpg?fit=833%2C563&ssl=1
That's a 1980 Montesa Cota 349 competition trials bike (essentially the same as my 248, with a big-bore barel) Note the RHS chain drive, but ALSO that the back-brake drum is in the middle of the drive sprocket.
This is because it also has the brake pedal on the RHS, in what we now consider the 'normal' control location. But putting the brake pedal on the RHS begs the brake be on that side also, or a convoluted cross-over linkage to put it the other side.
So this same anomaly, explains a lot of the contention between the old 'Brit-Bike' right foot gear-change control lay-out and the now defacto 'European' Left-foot gear-change.
And it all basically stems from the preferred direction of rotation of off-the-shelf ignition-magneto's....
A-N-D there are many many standard production bikes, that have the chain on the Right-Hand-Side, not the left... they just aren't all that common, and most of them aren't Japanese. ____________________ My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?' |
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Old Thread Alert!
The last post was made 5 years, 44 days ago. Instead of replying here, would creating a new thread be more useful? |
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