A two wheeled motor vehicle.

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4
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2answers
49 views

Replace Yamaha FZ6 radiator for two smaller ones

I bought the engine of a Yamaha FZ6. I want to use it to run a competition single seater car we are builiding in the university. The engine didn't bring the radiator with it. I would like to ...
1
vote
3answers
142 views

What minimum maintenance should I do to get my cycle to a shop where it can be looked over professionally?

It's been in the garage all winter. It starts, but I'm nervous about getting it to a mechanic (about 10 miles away). It's a 2007 Honda Rebel 250cc. I have zero maintenance experience. None. A couple ...
2
votes
0answers
60 views

2009 Honda VTR250 motocycle losing power [closed]

My 2009 Honda VTR250 is loosing power during long rides. The throttle at this time does not pick and it slowly stalls. I tried replacing the plugs but still has not worked. It only solves the problem ...
5
votes
0answers
53 views

Why does my new tail light keep blowing the fuse?

I have a 1972 Honda CB350F and I got the new tail light from DimeCity. I think it was called the Buffalo style Medium tail light. The tail light turns on and works fine when I switch on the headlight, ...
4
votes
1answer
48 views

Why does my motorcycle's brake get loose easily?

I drive a 100cc motorcycle which has drum brakes on both the wheels. I have faced this problem with the rear wheel's brake for the past two years and I adjusted it many times. About an year back, I ...
4
votes
4answers
12k views

Squeaking brakes on motorcycle - an issue or not?

The front disc on my motorcycle emits a low pitch squeaking noise when I'm pulling up to a complete stop (almost like the sound train brakes make when pulling up to a station). This only happens when ...
6
votes
2answers
142 views

How to find the cause of sudden high fuel consumption of a motorbike?

About my bike Model: Honda CBR 250R Total Run: 35000kms Total Time: 2 years 3 months Clutch Plate changed at 30k kms after an accident Engine oil, engine oil filter and air filter changed in ...
9
votes
3answers
1k views

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. I also get occasional fault codes from the ECU indicating a vacuum leak. Today I connected a ...
4
votes
3answers
908 views

straight pipes and carb rejetting?

I have a 1984 Honda GL 1200 standard wing and I am going to put straight pipes on it, however some forums say I will need to upjet the carbs, and others say I will not. Has anyone on this site ever ...
9
votes
2answers
622 views

Motorcycle stood for over 12 months, turn over by hand first?

My 2006 GSXR 750 has been stood for over 12 months, I have drained the tank, and oil, and I'll do the coolant after I get it started, and give it another oil change. Is it worth me removing the plugs ...
9
votes
1answer
55 views

What is cold tire shearing?

I have friends that go to Track Days frequently on their motorcycles. If the first session is very cold they use their old tires and don't ride real hard because they don't want to shear their good ...
2
votes
1answer
415 views

My ER6 was lowered to accomodate a shorter driver than me. How can I adjust the height?

I want to adjust the height of my Kawazaki ER6n from 2006. Specifically, I want to reset the height to factory settings. Is this something that's possible to do without hiring a certified mechanic or ...
4
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
3k 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
1k 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
4k 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 ...
9
votes
2answers
250 views

Yamaha R1 intake tract configuration

Interesting Configuration The Yamaha R1 has a very strange intake design. Notice the intake horns in the image below. They sit above the throttle bodies and are not attached directly to them ...
5
votes
2answers
128 views

Hyosung GT250R Leaking petrol

Motorcyle 2006 Hyosung GT250R Syptoms Leaking lots of petrol when engine is on Info Hasn't been ridden in about 10 months. Has been stored outside with cover, leaning on it's stand. I've ...
5
votes
1answer
102 views

Honda CB400 Super-Four - Power Issue

I have a Honda CB400 Super-Four. My bike starts and rides but I can't get more than 5000rpm out of her. If I do then she floods and cuts out. Two of her exhaust pipes are cold and two are warm. ...
8
votes
2answers
665 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 ...
11
votes
2answers
2k 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
3k 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 ...
5
votes
1answer
226 views

Carburettor jetting on installation of aftermarket air filter

I have a 150cc motorcycle and am planning to install an after market air filter(K&N) since the stock one was favoring fuel efficiency and not performance. The bike has a carburetor (Mikuni) not ...
6
votes
3answers
1k 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
5k 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 ...
6
votes
2answers
5k 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, ...
12
votes
4answers
872 views

Is there a benefit to belt driven motorcycles?

What are the pros and cons of belt driven motorcycles compared to chain driven bikes?
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0answers
27 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 ...
21
votes
5answers
4k 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
7k 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
377 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
78 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?
5
votes
2answers
138 views

Is this the correct procedure for a stator test?

Stator Test I have a 2007 DL 1000 V-Strom: I followed the following process while checking the stator: Put multimeter to VAC Tested the three phases of the stator connector plugged into a new ...
12
votes
2answers
273 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 ...
19
votes
2answers
1k views

Why do two-stroke engine exhaust pipes look so strange?

Two stroke gasoline engine exhaust pipes are shaped strange. They expand into a wide diameter and then shrink down to a very small diameter where the exhaust gasses emerge into the environment. Why ...
7
votes
1answer
42 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 ...
11
votes
2answers
91 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 ...
10
votes
2answers
107 views

Motorcycle Four Body Carburetor Synchronization Balancing

I would like to adjust four-body carbs by myself, in order to avoid spent money every time. What are the basic rules, tools and secrets of synchronizing multiple carburetor bodies?
7
votes
1answer
68 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
290 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 ...
12
votes
2answers
217 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. ...
7
votes
3answers
85 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?
5
votes
3answers
451 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 ...
6
votes
2answers
128 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
257 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 ...
5
votes
2answers
181 views

Suzuku Katana does not start after an accident

I have a Suzuki Katana GSX600F. So, after an accident I was in, I rode the bike home and all was fine except a little cosmetic damage, then in a rainstorm it tipped over and after picking it up and ...
6
votes
2answers
836 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 ...
2
votes
5answers
513 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
3k 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 ...