A self propelled two wheeled motor vehicle with an engine larger than 50cc's.

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6
votes
2answers
1k views

Suzuki GSXR600 (K7) - Burned regulator/rectifier

I have managed to completely fry regulator/rectifier on my Suzuki GSXR600 (K7). I suspect that it happened when I blindly splashed into a big water pond, so some water probably got on connector. Thing ...
4
votes
2answers
4k views

Motorcycle gears seem really stiff and hard to shift when cold

So I have noticed that even for a fruther 10 to 15 mins after warm up, the gear lever on my motorcycle (bought brand new - 6 months old) seems really stiff and harder to change. Could this have ...
6
votes
2answers
2k views

2 week old disk brake pads rubbing on rotor. Is this OK? (motorcycle)

I got the pads on the front brake of my bike replaced 2 weeks ago. Immediately I heard a rubbing noise at low speed. I thought this would be ok - that the pads just had to be worn in or something, but ...
4
votes
3answers
7k views

Bike is sometimes not wanting to shift into neutral

I have a 1982 Suzuki SP250. The bike "doesn't want" to shift into neutral sometimes. I have to rock it back and forth and shift up and down the gears a for a while before it shifts. I have changed the ...
8
votes
2answers
744 views

Motorcycle chewing through too many front tyres

I have a Y2K Triumph Speed Triple that has an excessive appetite for front tyres. It eats two front tyres for each rear tyre. This is reverse what it should be. I run the tyres at about 38 PSI and ...
13
votes
2answers
3k views

Should motorcyle exhaust headers ever glow red hot

I've got a '99 Pegaso 650 which hasn't been running for about 7 years. It's was in a quite a deteriorated state when I got it, i.e. seized carbs, tank full of water, sump full of an ugly fuel/oil mix, ...
4
votes
2answers
5k views

What is the difference between a normal battery and a maintenance free battery in a 2 wheeler segment

What is the difference between a normal battery and maintenance free battery. Is a maintenance free battery really free of maintenance or just it requires less no of charge cycles. I currently own a ...
6
votes
3answers
2k views

Motorcycle with EFI not starting well

I have a 2012 Kawasaki W800. On cold mornings it is difficult to start - it turns over quite a few times before it catches. This is compared to my old carburettor bike which started instantly with the ...
7
votes
3answers
6k views

Motorcycle popping on acceleration

I have a 1975 Honda XL250 that I bought earlier this summer. Up until recently its been running great. It was leaking a little gas, but nothing too serious. When it started to get worse, I opened up ...
7
votes
2answers
6k views

Carburetted motorcycle stalls when accelerator is applied

My father has 1995 Kawasaki VN 800 Vulcan with low kilometrage (18 000, 11 000 miles). We had installed new Vance & Hines pipes on it (in hindsight, way, way too loud, but that’s beside the point, ...
13
votes
4answers
949 views

Is there a benefit to belt driven motorcycles?

What are the pros and cons of belt driven motorcycles compared to chain driven bikes?
1
vote
0answers
36 views

The critical components that define an Adv tourer from other motorcycles [closed]

Mainly want to understand the running of an adv tourer. 1) what is the basic difference between the showa suspensions,WP suspensions and an upside down fork? Advantages & disadvantages of the ...
24
votes
5answers
5k views

What is the technical reason the engineer decided the motorcycle gear pattern as follows?

The gear pattern is selected by clicking a lever with your left foot, and is typically laid out as follows: 6th gear (if applicable) 5th gear 4th gear 3rd gear 2nd gear NEUTRAL 1st gear What ...
4
votes
5answers
8k views

How to save fuel on downhill slopes on a motorcycle: clutch or neutral?

I have a two wheeler i.e. bike (Honda company, four stroke) which has four gear. While driving my bike, when I come to downhill slopes, I shift the motorcycle to neutral to save the fuel. (The slopes ...
8
votes
3answers
1k views

KTM Duke 390 - Does it have to be hot to ride?

I have a KTM Duke 390 - 2013, single cylinder 373 cc motorcycle for 4 months now. I bought it from another owner when it was around 9500 km. now It's at 12000. This is my first bike, and I'm trying to ...
5
votes
2answers
98 views

What is a bobber?

What is a bobber and are there advantages for turning your motorcycle into one as opposed to running it stock?
14
votes
2answers
356 views

'00 Honda CBR929RR - Unknown issue, help!

Sorry for the ambiguity here.. I'm not sure what the issue is with my bike. I have a bunch of symptoms and my hypothesis is that it's a cascading failure and I'm just seeing a bunch of effects down ...
8
votes
1answer
60 views

Suzuki 2004 sv650s wiring

I got a 2004 sv650s Suzuki when I turn the key on the fuel pump does not come on and the CHECK light comes on on the dash. All the lights come on and the starter button does not work.All the fuses are ...
12
votes
2answers
832 views

What is the motorcycle equivalent of OBD-II?

I once met an OBD-II expert while traveling and asked him if motorcycles (especially the fuel-injected ones) employ a similar protocol. He said that the use of such a protocol is not as widespread ...
7
votes
1answer
80 views

What is a chopper?

What modifications must be made to a motorcycle to classify it as a chopper and how does it differentiate from most stock designs?
3
votes
3answers
323 views

What are the critical maintenance items for a new motorcycle?

I have purchased a new motor bike recently. What are the critical maintenance items that I should focus on? For example: Is it true that we should not run new bikes on high rpm for some time? What ...
13
votes
2answers
519 views

Why do Harley Davidson engines suffer from such poor performance?

The modern Harley Davidson engine has very poor power output. Even when highly modified a 130HP engine can cost tens of thousands of US Dollars. Here are specs on one of the modern engines. ...
8
votes
3answers
149 views

What prevents engine oil from mixing with petrol in motor bikes?

Engine oil is used in the lubrication process, at the same place petrol is also there. What prevents engine oil mixing with petrol in motor bikes?
7
votes
3answers
604 views

What do these compression figures mean

This is a follow up question to What are the causes of fluctuating intake manifold vacuum I have a 2005 Honda CBR600 F4i which suffers from occasional hesitation at low rpm when accelerating. After ...
7
votes
2answers
142 views

Yamaha YZ125K 1983 transmission bearings

I'm restoring an engine and am unable to locate 3 gearbox bearings. Identifying mark is either IXO or IKO. It is a needle roller bearing type and sits RHS crank case 1/3rd gear shaft. Mark clearly ...
5
votes
1answer
331 views

Motorcycle: Fuel Injection light comes on after 5 mins of riding

I've bought a brand new bike and have had it for about 2 months. Later this week I noticed that after about 5 mins of riding the Fuel Injection light comes back on. I stop the bike, turn the ignition ...
5
votes
3answers
1k views

Larger cylinder volume, but less power, how?

KTM Duke 200 which has an engine of 200 cc, and, on the other hand, Royal Enfield Bullet 350 with a 345 cc engine. I.e. Enfield has 150 cc more than the Duke. But KTM produces 25 BHP of power, whereas ...
6
votes
2answers
1k views

How important are swing arm bushing pivot collars ? [ Honda CB400T Motorcycle ]

I've got a project motorcycle which is a bit of a frankenstein. It came to me with a Honda 400T engine but the compliance plate says it's a 1982 CB-250T, looking over the frame though the swing arm at ...
3
votes
5answers
611 views

How do I fix my XF125GY 4-stroke engine misfires?

I own a XF125GY Supermoto Pioneer 4-stroke single cylinder. I put too much oil in it so I did an oil change and put in a new spark plug then I noticed that oil had got into my air filter and that the ...
4
votes
1answer
4k views

Why is my motorbike's clutch slipping?

It's a BigBoy DRT-250, a cheap Chinese import, normal manual gearbox motorbike, not scooter, which probably already partially answers the question, but at 10,000km I have had no prior mechanical ...
4
votes
1answer
95 views

Fork tube seals Suzuki sv650

So I recently inherited a 2002 Suzuki sv650... It was garage kept for about 6 years and needs some love. I noticed that the rubber seals on top of the fork shock tubes won't stay with the tubes... ...
2
votes
3answers
2k views

One cylinder not firing, GSX R 750 W

What could be possible reasons that one of the four cylinders (the left or first one) is not working? It was working before, than it did not, then it did again and now not again. I was able to start ...
5
votes
1answer
368 views

Honda CBR 250 won't start after heavy rains, puttering noise

There has been heavy rain and yesterday I couldn't start my bike. The main and other fuses are not blown. I ride it regularly. Turning the bike on: https://vid.me/pYNw. The high-pitch noise is not ...
4
votes
1answer
223 views

XJ600 1994 Seca 2

I am wondering if anyone can shed light on an issue we are having with this particular bike. Basically, the bike starts fine cold and warms up and drives perfectly for about 15 minutes ( responsive to ...
5
votes
0answers
62 views

2011 Hyosung GT250R - Stalls and Stutters at Lights [closed]

I have owned a 2011 EFI Hyosung GT250R for about a month. I haven't had any problems. Today, I was riding in 2nd gear and I shifted down to 1st to make a quick stop, and once stopped the idle speed ...
7
votes
1answer
31 views

1973 CB350-four, no spark on 1 and 4 when it's cold

When this bike is cold the 1st and 4th cylinders do not fire. Pulling the plugs and checking them, there is not spark. If you get the bike hot, it runs really bad on the way there, 1 and 4 come ...
2
votes
1answer
160 views

identify suspension leak on motorcycle

Especially after a good cleansing when there is no visual signs of a spil, I found it hard to detect problems with oil leaks/levels. Usually I can feel low levels in a rear mono suspension when ...
12
votes
3answers
2k views

What are the Advantages of a Single Side SwingArm on Motorcycles?

I have noticed that Ducatis , Honda and Triumph have bikes with a Single Sided SwingArm Much like most of the scooters. Are there any advantages of following this design , if so why are not all ...
5
votes
3answers
521 views

Motorcycle gear changes alternate between stiff and normal

I have a 6 month old Kawasaki W800 I bought new. Sometimes when I ride gear changes seem stiff and clunky. Other times they seem smooth and normal. Would anyone know what could be causing this? ...
9
votes
4answers
2k views

Is it OK to skip gears?

I'm not sure if this is on topic, but I'd like to know the answer before it comes a repair question. I have a Y2K Triumph Speed Triple - great bike. First gear comfortably takes to 90km/h. Needless ...
6
votes
4answers
5k views

Can a motorcycle's brake lever be bent back into shape?

I recently had a low speed spill on my bike leaving the brake lever rather bent. Can I bend it back (roughly) straight or it is likely to just break? Given that it is cast aluminium, I suspect is will ...
8
votes
4answers
359 views

What is the best practice to maintain a bike?

I have an Avenger 180cc bike, I want to maintain the bike without much help from the service center, external help etc. What would be the best practice methods?
2
votes
2answers
8k views

Why bikes with gears are preferred when there is gearless(or automatic gear) technology?

I know that lower gears have higher acceleration & low top speeds and higher gears have low acceleration & higher top speeds. But I would like to know why this gear system was designed ...
6
votes
1answer
863 views

Clutchless Downshifts Using Throttle Blip on a Motorbike/Sequential Gearbox

This is with respect to non synchromesh, sequential transmission. Ducati along with several after market systems, implement clutchless downshifts by automatically applying a slight throttle to unload ...
3
votes
1answer
101 views

Top speed of my Bajaj Pulsar 135 is decreased after changing Clutch plate

I would like to know if my clutch plate can be the reason that my top speed is now lower. Top speed of my bike is 115. I drove my bike after the clutch plate replacement and the top speed is now 90- ...
5
votes
4answers
2k views

Motorcycle: stiff chain links - able to repair?

So after tightening my chain the other day I noticed a creaking noise - its seems there is a tight spot in the links. I have sprayed this with chain oil and let soak. I know I will need to replace the ...
6
votes
1answer
73 views

Can I Mount auxiliary lights for Hero Honda Passion 2002 bike?

I am having a Hero Honda Passion 2002 model bike. The head light is very low and it works on engine power not on the battery, due to this riding bike in no light area with lots of ups and downs are ...
11
votes
1answer
116 views

How does one use a chain press to remove a motorcycle chain?

I recently found out about this tool from this answer. I'm interested in understanding the steps involved in using this tool to remove/install motorcycle chains. Also, would it be possible to use ...
6
votes
2answers
762 views

What should I look for in a basic motorcycle maintenance toolkit?

I'm looking to do more of my motorcycle maintenance myself, and am wondering what I should be investing in, when it comes to tools/devices. What are the basic tools that I'd need when starting to do ...
4
votes
2answers
3k views

1999 gsxr 600 - What is wrong when my regulator keeps burning out?

I recently had my clutch replaced and a new battery put in. Within a month my regulator/rectifier burnt out of it. So, I purchased a new one. After 2 weeks that one burned out also. I replaced the ...