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Old 22nd May 2009, 18:00   #16
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Lightbulb pulsar 150CC 2002 model silky silver

hey guys...
want some prominent answer to this ...
i am planning to remove the current spoke based wheels and put the alloys with tubeless tyres.
will this improve or degrade the performance of the bike..

Reason:
i am finding it really annoying with some weird sound which no mechanic in the city has able to resolve.
(sound of 2 metals getting scratched when i accelarate and move fwd as soon as i start the bike... after this i dont get this sound... )
from oct 2002 till 2009jan i have not had this sound.. since then.. this is haunting me..
i always wanted to have a better look for my bike..

pls suggest ...
thanks
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Old 23rd May 2009, 11:28   #17
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Quote:
Originally Posted by Raccoon View Post
^^^The truing is done is a pretty crude way. Suggest you check yourself if its satisfactory.

One more thing comes to mind - hope you have checked that the tube size exactly matches the tyre size and that the tube is genuine. When I changed my rear tyre couple months ago, the shopkeeper actually passed on a bigger size tube... and later when I confronted him, they had the cheek to say it makes no difference so they did nothing wrong!!!
OK. Currently I'm having MRF tubes on Dunlop tyres. But the tyre sizes are same.
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Old 23rd May 2009, 14:29   #18
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Any reason why you went for MRF tubes and Dunlop tyres?

Its a bit early to comment... but I feel the Dunlop tubes on my bike don't seem to be retaining air as long as the MRF tubes I'v used in the past. I hate going thru the air filling procedure every week...
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Old 23rd May 2009, 15:04   #19
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I'm using the Dunlop tube at the rear and the MRF in the front with the Michelin M45 tyres.
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Old 23rd May 2009, 20:16   #20
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^^^So do you notice a difference in the air retention capabilities?
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Old 28th May 2009, 12:21   #21
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Originally Posted by Raccoon View Post
^^^So do you notice a difference in the air retention capabilities?
I haven't noticed any problem in air retention capabilities for MRF tubes.
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Old 29th May 2009, 15:32   #22
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^^^ What I ment was did you notice a difference in the air retention ability of MRF tubes when compared to Dunlop tubes??

I feel the MRFs are much better at retaining air. Whats your experience?
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Old 29th May 2009, 15:58   #23
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Dunlop is a decent tyre and personally I feel that they use the right compound compared to MRF . MRF is more famous because they use a harder compound and the life of the tyre is much higher . This is especially true for truck tyres .

The best tubes I have seen are the MRF ones . They are more thicker and stronger ,may be that is why they last longer .

Now , coming to the problem

1 . Have you checked the wheel bearings ?
2 . While truing have you checked for rim defects ?
3. Are you using the stock spokes or thicker spokes ?
4 . How is the steering play ? IS there a shake ? do the balls ,cone set need replacement ?
5 . Front forks ? Are they ok ?
6 . Main axle bush , is it worn out ?

If all these are ok , then get the tyre checked for any defects . You might not able to check it with the naked eye . Go to a tyre shop or a rim shop . He will be able to see if the tyre has any manufacturing defects .


The ribbed tyres are made for a reason .. they offer more lateral steering and in turn offer a better grip compared to the nylogrip in a straight line .
You can be sure that you will have a better braking effect on wet surfaces than a nylogrip .
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Old 29th May 2009, 17:28   #24
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^^^MRF not only seems to have a harder compound, but the tyres seem to have more rubber also. But on the other hand, the grip sux! The rubber on Dunlop tyres definitely seem to be a softer compound. They are possibly lighter too. However, I'm quite annoyed by my new Dunlop tube's ability to retain air. They claim to use imported butyl rubber and all on the pack... but it dosen't seem to mean anything in actual use.
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Old 29th May 2009, 18:13   #25
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Thats very much true!!
MRF tyres last longer with there harder compound. My MRF zapper(3*18) on unicorn rear looks quite new after 26k km. Donlup are way better than MRF.
The MRF on new yamaha 150cc show-piece have a mix of harder and softer compund across the center and side-ribs to improve traction on a very lean angle..
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Old 29th May 2009, 22:57   #26
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in general arent the softer compounds better for grip? especially in wet and dusty conditions?
Of course the harder compounds would last much longer than the softer ones.
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Old 30th May 2009, 23:49   #27
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Quote:
Originally Posted by ash_blore View Post
in general arent the softer compounds better for grip? especially in wet and dusty conditions?
Of course the harder compounds would last much longer than the softer ones.
tread pattern and compound mixture is directly proportional to the grip .
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Old 31st May 2009, 12:00   #28
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Quote:
Originally Posted by greatmana2000 View Post
tread pattern and compound mixture is directly proportional to the grip .

I think tread patterns are important only in wet conditions. In pure dry conditions nothing can beat a non-tread tyre.
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Old 2nd June 2009, 16:56   #29
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Quote:
Originally Posted by greatmana2000 View Post
1 . Have you checked the wheel bearings ?
2 . While truing have you checked for rim defects ?
3. Are you using the stock spokes or thicker spokes ?
4 . How is the steering play ? IS there a shake ? do the balls ,cone set need replacement ?
5 . Front forks ? Are they ok ?
6 . Main axle bush , is it worn out ?
1. The wheel bearings was replaced 5000 KMS ago.

2. There are no rim defects(according to my naked eye) & the service center people also didn't report any problems.

3. Stock spokes.

4. No shakes. TH cone set was replaced 7000 KMS ago due to wear & tear.

5. Seems to be ok. Changed the fork oil 4000 KMS ago.

6. Don't know. How to check Main axle bush ?

Quote:
Originally Posted by ash_blore
In pure dry conditions nothing can beat a non-tread tyre.

Did you meant that a tyre with worn out thread is better in dry conditions ?
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Old 2nd June 2009, 20:11   #30
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Quote:
Originally Posted by mithun View Post

Did you meant that a tyre with worn out thread is better in dry conditions ?
definitely not. a worn out tyre is a worn out tyre. A lot of the compound that provides the grip is gone. I meant a new tyre without treads. also note that such a tyre in even slightly wet conditions is useless (aquaplane).
the treads are actually designed to push water away from the center of the tyre
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