Chain Lube: Lubricates chain

Chain Clean: Used for cleaning chain.

AFAIK, a chain cleaner is also used as a chain lube.

can we use t6his chain spray to lubricate other moving parts in bike?...like clutch brakes.etc..?

Yes, you can.

Guys I think we have got another good option for rear tyre.
R15 2.0 's rear tyre profile is 130/70-17. And our P180's is 120/80-17. I think It should be direct fit.
Only the chain guard needs to be moved to a little left and couple of washers should do that. There's more than 20mm space on either side of tyre so it shouldn't problem.

I made some calculations.
P180: rear tyre: 120(width)/80(height in %)- 431.8(diameter in mm)
R15 2.0: rear tyre: 130(width)/70(height in %)- 431.8(diameter in mm)

so sidewall height
of P180 = 120 * 80% = 96mm
of R15 = 130 * 70% = 91mm

So,
Circumferences:
= pi x ( tyre diameter + double of sidewall height)

P180 : 3.14 x (431.8 + [ 2 x 96]) = 1,958.732 mm
R15 : 3.14 (431.8 + [2 x 91]) = 1,927.332 mm

Ratio is: 1,958.732 / 1,927.332 = 1.016291951775823

Now being a ratio of circumferences, is directly proportional to speed.
Because circumference directly translates into the distance traveled by the tyre and distance in turn, is directly proportional to speed for a constant time.

So if P180 does 55 KPH @ 4K RPM, P180 with R15 rear tyre will do (55 / 1.016291951775823) = 54.11 or 54 KPH

Points that should be taken:
1. Above calculations suggest that millage per litre should reduce by 1.
2. Added negligible acceleration by low gearing created will be compensated or killed by wideness of the tyre.
3. Due to stickiness of soft component tyre, high rolling resistance will be created and should be noticeable at highest speeds. Top speed will reduce by 3-4 KPH. All in all fuel average will reduce by another 1.
4. More comfort for rider and pillion.
5. So this tyre will eat ~4 Rs. per litre to keep it going. This mod is for those who wants to live a little longer by having good grip on roads.

@Xionite, Abhi, Eshan: Our tyres are probably due for replacement. What do you think?

Some SERIOUS calculations! man go and get a Degree in Physics.

Yes, the R15 tyre has a length ratio (height) of 70 which will result in bumpier ride. My rear and front tires are almost on the verge of giving-up. This rains and I faced a lot of troubles with braking and maintaining grip on the road which was not the case in the previous year's rains meaning the change of tyre is needed badly.

How did you calculated the circumference? It should be (Pi*D) i.e. (3.14*431.8) = 1355.852 ?

Typical formula of circumference is
=2 pi r
=pi 2r
=pi d

in our case diameter is double of height + rim diameter.




I've done few corrections. Go through my last post again.

Ride will definitely become a little bumpy. So please upgrade tyres and let us know.

Let me correct a few things:

120\80-17

Width of tyre = 120mm

Height of tyre = 80% of the tyre width i.e. 120*(80\100) = 96mm

Total diameter (RIM diameter + tyre height) = (17*25.4) + 96 = 527.8 mm

Circumference = Pi*d = 3.14*527.8 = 1657.242 mm

I could'nt understand how did you calculated the tyre diameter?

now it seems like a phisics thread...
great guys...
friends..now some new 180s are coming with eurogrip 120 section tyres..i felt it as more wider as well as gripper.

i dont like that front tyre much...but its also wider..

dont know about the tyre quality but i like its appearance.no size difference also.so it will be a correct fit without any worries...

I didn't know second number was in percentage. So that corrected. Secondly you still need to double it to get diameter. Because that number is the difference between outer radius and inner radius of tyre. Refer to the image from last post. Corrected calculations :

P180: rear tyre: 120(width)/80(height in %)- 431.8(diameter in mm)
R15 2.0: rear tyre: 130(width)/70(height in %)- 431.8(diameter in mm)

so sidewall height
of P180 = 120 * 80% = 96mm
of R15 = 130 * 70% = 91mm

So,
Circumferences:
= pi x ( tyre diameter + double of sidewall height)

P180 : 3.14 x (431.8 + [ 2 x 96]) = 1,958.732 mm
R15 : 3.14 (431.8 + [2 x 91]) = 1,927.332 mm

Ratio is: 1,958.732 / 1,927.332 = 1.016291951775823

Now being a ratio of circumferences, is directly proportional to speed.
Because circumference directly translates into the distance traveled by the tyre and distance in turn, is directly proportional to speed for a constant time.

So if P180 does 55 KPH @ 4K RPM, P180 with R15 rear tyre will do (55 / 1.016291951775823) = 54.11 or 54 KPH


They are there from ages. They look total rowdy.

+1 to lockhrt. It looks horrible and adding to that the grip is more horrible especially in wet. Try a 180 with eurogrip and you will know what I mean.

Correct! Actually, if we get a more gripper tyre then little mileage and speed loss is not the concern. But, the main headache is sourcing this tyre, as the bike has been launched just now and adding to that finding R15 tyres (old) was a LABORER job. Lets hope this one is available easily in the market.

I've an MRF showroom in vicinity. I could ask there. Secondly we don't know for sure that new tyre will be made from soft compound. Lets wait for couple of months.

I've been using EUROGRIP since the time i bought my p180 -- 1jan2010..
Its awesome.. I haven't experienced any skidding issues though..

Well, those tires are rowdy enough to compel people to ask you, "Where did you get this tire mod?"
LOL

And yeah, I've bent around corners like hell.. The stand has scratched many a corners.. Not a single skid.
The rainy season was something i was afraid of, while taking my bike on a ride.. But then, it proved me wrong a week ago..

Yes it did skid, but only when I pushed it above 80 during hard rains...
it did superbly nice while in the 50-60 area..

Earlier I was taken a back, when I noticed my tires were NOT MRF.. :-O
But since, then I've tried and tested these tires to their extent, and till now, they've proven to be worthy enough

NEW 180 with full back theme..

friends...new 180s are coming with all black theme including grab rails,clipons..etc. happend to see new 180s last day at show room. engine cover also changed with new design and golden color theme.felt nice to see..

See if you can get photos. Is there any change in structure?

Yep! saw that a few days ago. Nice make-up by Bajaj.

Only cosmetic changes are there, new sprocket cover, crank case cover, blackened handle-bars and grab rails, just that.