A two wheeled motor vehicle.

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4
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2answers
4k views

Why can't I ride a new motorcycle too fast?

I bought a new motorcycle. The manual says that for the first 500km, I should not twist the throttle more than half. And for the first 1800km, should not twist it more than 75%. Why can't I use ...
4
votes
4answers
3k views

How to add hybrid technology to a 4-stroke engine motorcycle?

I am enthusiast of automobile, and especially of motorcycles. I don’t know much about engines practically, but I read a lot. I was reading an article at How Stuff Works about the hybrid technology ...
3
votes
1answer
45 views

Does putting vehicle in neutral at slope cause clutch plate spoilage?

I am having a Hero Honda Passion 2002 model motorcycle. I have a doubt regarding clutch and Neutral functionality. I have observed that most of the time in our city the roads have ups and down so ...
2
votes
2answers
69 views

Honda Unicorn skids every time I use the rear brakes only

Honda Unicorn 160cc motorcycle skids every time I quickly hit the rear brakes. Even at slow speeds such as 10kph (about 6mph) Is there a problem with my riding style or could it be the bike? I have ...
4
votes
2answers
2k views

Bent front fork on a bike

There's a previously owned 2009 YAMAHA FZ16-S that I'm thinking of picking up. It has a slightly twisted and bent fork (plausibly caused by an accident). It's only apparent when you ride it for a bit. ...
3
votes
1answer
69 views

Hauling a motorcycle cross country — more or less wrong ways to do it.

I need to haul a 425 lb KLR650 motorcycle from Hoboken NJ to Oakland CA. I'm on a budget so I'd like to do this as cheap as possible (under $200 is great, maybe $500 max). I have a 1996 B4V VW TDI ...
2
votes
1answer
310 views

Moped bike motor problem carburetor

I have tried many technicians but none have solved my problem. I had problems in the past past, but one day my bike started to make a noise while opening the throttle when cold after about 50km/h ...
3
votes
1answer
62 views

Suzuki vl 250 wont start

I have a Suzuki vl250. It's been running great until last weekend I rode it home from work turned it off and the Mrs decided she wanted to go for a ride only problem is bike wont start! Since then I ...
2
votes
1answer
39 views

Motorcycle front brake's are weak

A few weeks ago I was in a motorcycle accident and my handlebar had bent and so had my old brake lever. A buddy of mine who's quite good with motorcycle's bent the bar back and changed the brake ...
2
votes
2answers
74 views

Replacing Spark Plug with Laser Iridium NGK Spark Plug

I have 2012 KTM Duke 125 at 10 000 miles (16k kilometers). I am the third owner of bike for 2 years. Whenever i twist the throttle fastly, motorcycle is chocked up. So i thought the problem could be ...
2
votes
0answers
31 views

Terminator 2 1990 Harley Davidson Fatboy FLSTF technical information

I am doing a project for class about the Harley Davidson Fatboy, and I need to find the values for the spring constant of the bike used in Terminator 2, and whether or not it used a custom suspension. ...
1
vote
1answer
1k views

requirements upgrading of headlamp from 35/35w to 60/55w on bullet 350 uce

I own a Royal Enfield Bullet (std) 350cc 2013 uce model. The bike is fitted with a 35/35w HS1 PX43t halogen bulb. I want to replace it with a 60/55w halogen H4 bulb. Earlier I had installed the ...
4
votes
2answers
318 views

Does increasing headlight wattage affects motorcycle mileage

I ride Honda CD-100 SS, a 100cc motorcycle. Does increasing the wattage of the headlight bulb affect the mileage(fuel efficiency) of the motorcycle? If it does please explain how.
4
votes
2answers
72 views

Is there a key code with my Kawasaki

I hear that there is a key code for my 2006 Kawasaki Vulcan 900 LT that can be given to a dealer who can then cut a new key for my bike if ever necessary. Now it is. But where do I find the key code?? ...
3
votes
1answer
48 views

Winter is here, what measures should be taken to protect a motorcycle?

After a mere two months of owning a motorcycle, it's already winter and I'd like to know how best to prepare for the inevitable ice/snow/cold. Other than basic cleaning and lubrication, are any other ...
5
votes
3answers
178 views

What might cause a stator to burn out?

My motorcycle recently required a new stator (plus a new regulator rectifier and battery) because the stator burnt out and fried everything. What are the typical causes of a burnt-out stator? Does ...
1
vote
2answers
87 views

Motorcycle Headlight Dies After Engine Start

I am having a weird problem with my headlamp on my 1983 Honda FT500. When I go out to start it in the morning, insert my key and turn it (engine still not started tho), the headlamp comes on as one ...
2
votes
2answers
80 views

Is there any protective sealant or bladder within a motorcycle tank?

I am learning metal work and will one day build my own motor cycle tank. Do these have any internal sealing or bladder?
3
votes
0answers
65 views

Problems with starting my Motorcycle [closed]

I have a Honda 2003 VTX 1300 S Retro that will not start without a jump. I just purchased a new battery on line (Chinese) for this type of bike charged it and still getting the same results as before. ...
3
votes
1answer
139 views

Big motorcycles at stop lights; why do they keep blipping the throttle?

We've all been near a big Harley at a stop light, where the rider keeps blipping the throttle. I've always wondered why they do this. Is it because those big pistons don't idle very well, and if you ...
3
votes
1answer
75 views

1995 Yamaha virago 535 Fuel pump problem

On my 1995 Yamaha virago 535, why does the fuel pump click 10 or so times before trying to start? I've replaced the fuel pump and fuel pump relay. It still has the clicking issue and will not start. ...
9
votes
5answers
729 views

How to become a self-taught amateur mechanic?

I'm a computer systems engineer (we did a lot of embedded systems and some electrical at university) and I own a Suzuki SV650S. I am considering doing several upgrades to it (e.g. replacing the front ...
1
vote
0answers
204 views

1982 Yamaha Virago 750 [closed]

I am considering buying a 1982 Yamaha Virago 750 that I found on craigslist. I have read online that many of these bikes have starter problems and I am just curious as to how hard it is to fix or ...
2
votes
2answers
991 views

How reliable is a Honda GB400 (motorcycle) grey import?

I am considering getting a 1985 Honda GB400TT bike as I simply love the look of them and they seem to be selling at a good price. I understand these are grey imports (imported 2nd hand from Japan) ...
6
votes
2answers
159 views

GSX-R front suspension technology timeline

I have noticed that people frequently choose the GSX-R front end for a front end conversion on old bikes to improve handling and comfort. The GSX-R was produced from 1985 through the present, and I'm ...
6
votes
3answers
163 views

Can a valve suddenly break in half? Versys 650 destroyed engine

this week-end, I had to disassemble an engine from a kawasaki versys 650 (early). The bike lost power while making ugly metal sounds. It never started again. RIP. context: 108.000km, mostly higway ...
3
votes
6answers
631 views

Why do they called motor bike instead of engine bike?

In Bikes, major part plays by 4 stroke petrol engine, then why did they named as motor bike or cycle instead of engine bike?
4
votes
2answers
431 views

What does “the bike dyno'd at 125BHP at the rear wheel” mean?

I'm in the process of buying an ebay bike (http://www.ebay.co.uk/itm/121337863485) which I won for maybe 60 - 75 % of its expected value. In the description the owner states that the bike dyno'd ...
3
votes
1answer
67 views

Requirements to use 55W Bi-xenon 6000k projector on yamaha r15 v 2.0

I have a problem with my vehicle headlights. Now I'm using a 35W 8000k projector for my bike. This is not having much light output as I wish. I'm really interested to see powerful light output from ...
6
votes
2answers
320 views

Motorcycle transmission occasionally pops out of gear

I'm having an issue where the transmission will occasionally downshift by itself during a fast acceleration. I have a 2005 Suzuki Vstrom 650 and it's been a great bike so far. At pretty high revs, ...
5
votes
3answers
424 views

Engine on BMW G650GS 2011 does not start when it's hot

I have a rather strange problem with my BMW G650GS. In the morning, when the engine is cold, it starts fine with a single crank. There is no problem with riding, the engine works fine and never ...
2
votes
0answers
30 views

2000 Kawasaki Vulcan Vulcan 800 Throttle Cuts at High Speeds (85mph+) [closed]

The bike starts fine but it coughs a lot when giving throttle in first gear. Runs great 2nd - 5th but when pushing around 85 mph or more the acceleration quits. The engine is still running but feels ...
9
votes
4answers
9k views

How to stiffen up a loose ball & socket joint for a motorcycle mirror?

I have bar-end mirrors on my Buell 1125CR. They're fairly heavy anodized aluminum pieces that pivot on a ball & socket joint for adjusting the angle of view. One of them fits snugly on the joint, ...
2
votes
1answer
318 views

What is the purpose of a smog block-off plate?

What exactly is the purpose of a smog block-off plate? What does it 'block-off'? How is it installed? And what are the benefits/detriments of installing such plates? In my particular case, I ask, ...
5
votes
2answers
66 views

Rain tyres for motorcyles

I have recently started driving a motorcycle to work (60 km/day). I have a Honda XR125L. Today I had an accident. I was driving at 10-20 mph and wanted to break for cars that were standing still. I ...
2
votes
1answer
55 views

GSF400 Bandit carburetor model or type,

I have Suzuki Bandit GSF400 model '92. May I know the type of carb do I have on it? I am trying to do some replacement on jets but I need sizes.
2
votes
1answer
358 views

2015 hawk 250cc enduro motorcycle

While riding down the street, our motorcycle just died. Tried to restart it and it sounded like it wasn't firing. We changed the plug and ignition coil and still not firing. What should we do now?
5
votes
1answer
53 views

What does an EXUP servo and subsequently EXUP eliminator plug actually do?

This question relates to my 2012 Yamaha R6. I removed the kickstand safety actuator because it was bugging me, I found it useless, and my habit is often to lift the kickstand when I start moving ...
5
votes
1answer
75 views

When should I perform a valve head adjustment?

My 2012 Yamaha R6 has about 12000 miles on it. During that times I've had a couple rough accidents and I think the combination of those two factors it may be a good idea to check my valve clearance ...
2
votes
1answer
394 views

Will any starter relay / solenoid do? For my motorcycle

I'm looking for a starter relay / solenoid for my 2004 Yamaha TT600RE. That part seems to be scarce for this bike. How interchangeable are solenoids for motorcycles? Will any Yamaha 600cc solenoid ...
4
votes
1answer
508 views

Why is this motorcycle burning oil, and how can I get it to stop?

I have a newbie question for you. I'm considering buying a 2004 Yamaha TTR600RE- a single-cylinder, air-cooled dirt-focused dual-sport bike. It's perfectly set up for adventure touring, which is what ...
2
votes
1answer
120 views

How to learn motorcycle maintenance theory

I'm a motorcycle novice and want to learn how to maintain a bike and fix problems that may arise. I've found a few great videos that have elucidated some basics: How a motorcycle engine works: ...
5
votes
2answers
230 views

Why do most mass-production motorcycles have their intakes facing backwards?

Almost every motorcycle I have seen has its air intake mounted such that it is sucking in air from the direction opposing travel. According to fluid dynamics, if the intake is made to face forwards, ...
1
vote
1answer
191 views

Why my bike shows petrol missing before 2000 RPM in all gears?

I am using Hero Karizma R (225cc, 5 gears). Recently I feel a missing in all gear befor 2000 RPM. Sometimes my bike turn off due to this missing. Usually it happens at 1st/2nd gears. After 2000 RPM ...
2
votes
1answer
63 views

Mounting bar end mirrors on non-hollow bars?

I bought a CRG hindsight bar end mirror but the CRG adapters and all the adapters I find online seem to be for hollow bars. But the bars on my 12 Yamaha R6 just have a threaded hole for a bolt.
4
votes
2answers
519 views

Parking a motorcycle with hot engine

I have a question regarding my motorcycle (Yamaha FZ8 - 4Zylinder 800cc). At the weeksend I was driving through a town. It was very hot outside and I parked the bike. The coolingwater-temperature was ...
5
votes
2answers
451 views

Reboring a cylinder: compression ratio of new piston

I'm going to have the cylinder of my 2004 TT600RE motorcycle rebored (because it's damaged, not to increase power). The manual says the piston size is 95mm and the compression ratio is 8.5 : 1. I'm ...
3
votes
0answers
45 views

Help identify round diodes - need a replacements [closed]

Few diodes died in three phase rectifier circuit on a motorbike. I can't find any suitable replacement online since I can't understand what kind of packaging is it. They round like a round pill. 7mm ...
4
votes
2answers
314 views

Semi synthetic oil engine break-in

I've finished rebuilding the engine of my motorcycle (4 stroke 650cc single-cylinder). For now it runned only once varying between 1000 and 2000 RPM for 5 minutes with a couple of short bursts after ...
12
votes
5answers
55k views

What does the 'cc' mean on a motorcycle?

I'm relatively new to motorcycles, my flat mate taught me how to drive his two Royal Enfields around New Delhi, and for the past year and a half I've been taking care of them as they break down ;) ...