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

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11
votes
1answer
148 views

“Valve like” noise after modifying camshaft ninja 300

A friend and I bought a modified camshaft for his ninja 300/EX 300. After installing and checking/adjusting valve clearance everything seemed ok. After a few laps on our local track the bike started ...
6
votes
2answers
62 views

Safe to buy new piston for your two wheeler engine

I own a Honda Stunner 125 CC motorcycle. I bought it in 2009. Since last year I have observed that it is emitting white smoke. Mechanic recommends that I purchase new pistons or after some time ...
4
votes
2answers
951 views

Single Cylinder 2 stroke bike with twin exhaust, will it need two chambered exhausts?

I am asking specifically about Yezdi (not in production anymore) 250/350cc motorcycles. Yezdi RoadKing was a 250cc single cylinder two stroke with twin exhaust. If upgrading to a calculated chambered ...
3
votes
2answers
111 views

Parking in the open in heavy rains

What if my bike is left 4-5 hours during heavy rains 5 days a week for 12 weeks? This type of weather is common in India during monsoon. I drive to work where there is open parking leaving my bike ...
10
votes
1answer
523 views

Does the air screw only affect the pilot jet?

I have a 2 stroke motorcycle, it's Kawasaki KR150. When I try to do some jetting on its carburetor (it's Keihin PWL26), I saw that there's an air screw. So now I've been wondering about this air ...
13
votes
6answers
4k views

Why is the speed of a motorcycle measured at the front wheel?

I have been thinking about this, from quite long ago. Why is speed always calculated from the front wheel? Let's just consider the following situation:- You are in a race, and you have given full ...
1
vote
1answer
27 views

Checking oil on a newly-aquired used motorbike

I've recently bought a used motorbike and am unsure of how to gauge the age/condition of its oil: Neither did I fill the oil in the first place (so I don't know what colour it used to be) nor have I ...
3
votes
0answers
35 views

New fairing from China - front centre cowl - screws don't fit

I recently bought some new fairing from China. When trying to fit the headlight to the front centre cowl, it appears that the holes for the screws are too small by a fraction. Also, in the old cowl, ...
3
votes
2answers
3k views

Motorcycle engine running a bit hot?

For the past few rides, I think my 2007 Ninja 250 has been running hotter than before. At least, I think it feels hotter through the seat, but the oil temperature gauge seems to be pointing pretty ...
1
vote
1answer
47 views

Installing clip on bars, limited space available. Will an adhesive be neccesary?

I'm planning to install clip on bars on my bike, however I have encountered a problem. If I install them in the traditional under the triple clamps position, they may lack clearance from the tank and ...
5
votes
1answer
66 views

How long can “Stabil”ized gas stay fresh? and can it be improved?

I had my sportbike in storage for at least 3 years. It is Electronic Fuel Injected. It had a full tank of Premium Gas (Shell or Mobil). I put in STA-BIL to preserve the gasoline. Is the gas beyond ...
5
votes
3answers
76 views

Ducati Monster 821 - Ignition problems

I have a 2015-Ducati Monster 821 that have started to argue with me. When i turn the key to on - i see the panel light up and the fuel pump etc starts. But when i klick the ignition button, nothing ...
5
votes
1answer
72 views

Pivoted curved-path piston engine

Years ago, I saw a documentary about engine efficiency where people were testing a pivoted, curved-path piston engine. The claim is that the standard piston engine, with straight up-and-down path, ...
10
votes
2answers
491 views

Is it safe to fix a bent motorbike wheel?

Long story short my front wheel took a hit and the rim is now slightly bent. Now, since this is a forged aluminium wheel, replacing it costs the best part of 1500EUR. Being on a budget I thought of ...
7
votes
2answers
575 views

Motorbike rear wheel hub reassembly

I want to get a new tire fitted on my 2003 Suzuki DR650 and removed the rear wheel. Following the manual I took the chain guard off, removed the axle, made the wheel free of chain and brake caliper ...
3
votes
1answer
57 views

How to Properly Reinstall Rotor and Stator on Suzuki DL1000

Background I am attempting to reinstall a new Rotor and Stator onto my DL1000. I uninstalled the old parts over a year ago and haven't gotten around to the rebuild until this summer. I have some ...
15
votes
4answers
67k views

Symptoms of Lean or Rich carb settings on a motorcycle

I have a 1981 Yamaha XS650. I recently put in K&N stock replacement filter (ie, they are in the airbox and conform to the size of the original), however they may be leading to a leaner mixture ...
3
votes
1answer
86 views

my motorcycle take more time to accelerate

I have a Honda CBF125 Stunner. Sometimes when I increases the throttle the bike cannot attain the real speed that matches the RPM and the engine sound changes. The bike takes more time to attain ...
11
votes
8answers
1k views

How to Remove Stripped Hex Bolts

While trying to remove a rotor from my Suzuki DL 1000 , I'm finding that some of the hex bolts are stripped. Attempting to use SpeedOut does not appear to be producing the desired result. Any tips ...
3
votes
2answers
82 views

Should I remove the rings when cleaning a piston?

I want to clean my piston in a small ultrasonic cleaner (with distilled water). Do I need to remove the piston rings to do so, or can I leave them on and make sure it dries completely? If I replace ...
3
votes
1answer
30 views

Cheap diagnosis/repair of damaged fairing

There are already a number of answers regarding ways to fix small scratches in bodywork, but I'm not sure of the exact "nature" of the damage to the fairing of my motorbike: It's not my bike, though I ...
0
votes
0answers
24 views

my motorcycle lack speed while increasing throttle [duplicate]

I have a Honda CBF125 Stunner. Sometimes when I increases the throttle the bike cannot attain the real speed that matches the RPM and the engine sound changes. What may be the problem ?
2
votes
1answer
32 views

BMW R1200GS LC Warm Up

How long should I warm up the engine before starting casually riding it in the city for keeping the engine as healthy as possible? Not at all, 30sec, 5 min or longer? And how long NOT to warm up ...
1
vote
1answer
26 views

dirt bike low rpm lugging

I have a 84 Honda XL350R. I know redlining a dirt bike is not good, but what about lugging in a high gear? When I say lugging I mean lugging.(no throttle whatsoever, can say the 4 stroke cycle suck,...
5
votes
2answers
110 views

Increasing rear sprocket size for torque gains, will a dyno tune be required?

In order to get some mid range and torque gains, I've decided to replace my rear sprocket with a bigger one. I asked a friend of mine (experienced motorcyclist, been riding for decades) and he said I ...
6
votes
2answers
482 views

Can I avoid buying a ridiculously expensive replacement starter motor?

My situation can be described with a photo: That's my starter motor, which doesn't appear to be in a healthy condition. What I would like to know is, can I avoid spending over $500 on a new one in ...
5
votes
2answers
94 views

What are the differences between a normal and an anti-hopping/slipper clutch?

Obviously an anti-hopping clutch won't make the motorbike hop. How is this achieved? What are the mechanical and functional differences between a normal and an anti-hopping/slipper clutch?
6
votes
1answer
88 views

How do I make a self start bike using a Hero Honda CD 100?

Very, very new to this community. I want to customize my old bike with a self start along with user authentication via Bluetooth using a smart phone. I can make the electronics part (Means Software ...
5
votes
1answer
87 views

Which of these parts can protect my gasoline from theft?

I am aware of this question, and I believe the answer there is excellent. But what I'm asking for is the list below and what to make of it. Some people in my neighbourhood have been stealing gasoline ...
3
votes
1answer
43 views

Hero Passion Pro - Choke Issues

I have a Hero Passion Pro Motorcycle. It does not get started when the choke is on. It does start when the choke is turned off? The engine produces a disturbing noise and smoke goes out when the ...
4
votes
2answers
14k views

why doesn't my motorcycle power on?

I have a Suzuki sv 650 2007. My bike recently turned on head lamps, tail, and gauges. Now it won't power on at all, not even a jump start can turn the power on. What can I do to solve the cause? Does ...
3
votes
1answer
26 views

Does Pirelli have a motorcycle tire warranty?

I can't find any information about a motorcycle tire warranty for Pirelli. Does anyone know if Pirelli offers a warranty on their motorcycle tires?
4
votes
2answers
43 views

Dirt bike carburetor problems

I just bought a new float needle that fits and it still seem like the tang is not even touching the needle when I press the floater all way in.I have a PJ carb,maybe the floaters are to a pwk carb,...
4
votes
1answer
72 views

Triumph America 2002 running lean on one cylinder

I have a problem with my America 800 it's running lean on the right cylinder and when I adjust the mixture screw it makes no difference. The mixture was checked using an afr meter. The rubbers ...
4
votes
1answer
27 views

Dual suspension to monoshock

I have a Bajaj Discover 135 with dual suspension. I have seen some photos on Google of some people who have successfully done this conversion. Now my question is, what would be the steps to do this?...
4
votes
2answers
78 views

2005 Honda CBF 600 — clutch plates get stuck overnight

I bought a 2005 Honda CBF 600S, rode it for about a week, and then asked my mechanic to check if everything is OK, and to replace the clutch cable. The mechanic also replaced all the fluids, ...
7
votes
1answer
70 views

No power to my 1988 LS650 Suzuki with new charged battery

I have a 1988 Suzuki LS650 Savage from someone who jumped it off with running car. Put a new battery in it and now I can't get any power. No lights or anything. What do I need to check?
1
vote
0answers
40 views

Idle RPM is not setting properly sometimes

I have an Apache RTR 180 (Carbureted) Sometimes, when I downshift, and when shifting down to 1st gear (to stand still), the RPM shows somewhere around 2000. The normal idle is around 1200 - 1400 RPM. ...
14
votes
5answers
72k 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 ;) ...
1
vote
0answers
29 views

I need to replace an engine in my heritage

My 2002 heritage has over 48,000 miles on it and is making a lot of noise so I would like to replace it with a 2003 road king motor. Would it line up and bolt in without any trouble.
1
vote
1answer
32 views

How can I check if a wheel axle is straight?

I might have bent the front axle of my motorbike. How can i check if a wheel axle is straight? I'm looking for tips on how to do this in case i don't have dedicated tools available.
3
votes
1answer
25 views

New 2015 Hawk 250 Enduro

Why do some Hawk engines have red letters on the case and some don't? I have 2 of them that were purchased at the same time at the same dealer. One has the name Hawk on the case in red and the other ...
0
votes
0answers
19 views

Motorcycle bore and stroke [duplicate]

Manufacturers often detail bore and stroke in their promotional material and claim 'achieving the ideal compression ratio' How do different bore / stroke / compression ratios affect an engine's ...
3
votes
1answer
34 views

Blown fuse on K1 GSXR 600. Fuse replaced, but still no power

I have a GSXR 600, and the live side of a circuit touched the frame and blew a 30A fuse. I changed the fuse and now I have no power. Does any one now why? Thanks
3
votes
2answers
99 views

Motorcycle bogs down under load

I recently did a head gasket repair on my 1986 Kawasaki GPZ1000RX and now that everything is back together it starts up fine, idles fine, and revs high without a problem while in neutral, but when I ...
2
votes
3answers
99 views

Which motorcycle engine and transmission configuration would have a higher top speed? [closed]

Can a higher cc (displacement) bike with 5 speed transmission or a lower cc (displacement) bike with 6 speed transmission have higher top speed? Example: Yamaha R15 (150cc, 6-speed transmission) v/s ...
7
votes
3answers
385 views

how to clean rust on chain (motorbike)?

slight rust on the side of the links of my bike chain. I'm runing with dry lube which is teflon based I think. The rust isn't deep. Can I go at it with a brass bristle brush, or will that damage it ...
6
votes
1answer
111 views

No power at higher RPM

I just had to do some fixes on my 1993 Kawasaki ZR750. I had some rust in the tank so I got it cleaned and sealed. To be thorough I also checked the rest of the system. Here's what I did: ...
8
votes
1answer
162 views

What can cause my motorcycle to shift into gear (but not all of them) without using the clutch?

I'm riding a Honda CB600F Hornet built 2006 (last model with carbs). I put it away for the fall/winter about 6 months ago. This week I was doing the maintenance, cleaned the brakes, lubed cables, ...
2
votes
3answers
1k views

TVS Apache RTR 160 - What Grade Engine Oil Should I Use?

I bought a TVS Apache RTR 160 second hand. I want to know what grade engine oil should i use for my bike. I was suggested to use 15W50. Is that a good choice. The bike has done almost 65000Kms.