Go Back   Team-BHP > BHP India > Motorbikes


Reply
 
Thread Tools Search this Thread
Old 23rd May 2007, 20:51   #1
BHPian
 
Join Date: May 2006
Location: Pune
Posts: 127
Thanked: 84 Times
Default New Unicorn problems

Hi All,
Recently I bought "all new" Unicorn. It has done ~ 800 kms (first servicing done).
I'm having problems with clutch judder in first gear (when taking off from standstill).
Also once I cross ~ 4000 rpm mark, the engine loses its smoothness and I can sense the vibrations and the noise is also quite audible.
I had stated the first problem to the servicing person & he did some tweaking. But after running the bike for 100 kms, the clutch judder seems to have come back.

What could be the problem here??

Thanks,
rb2399
rb2399 is offline   Reply With Quote
Old 23rd May 2007, 21:25   #2
Team-BHP Support
 
moralfibre's Avatar
 
Join Date: Dec 2004
Location: MH-12
Posts: 6,622
Thanked: 6,143 Times
Default

RB what exactly do you mean by clutch judder? Also my old version Unicorn makes a sound at 4k ++ rpm. Any bike will.
moralfibre is offline   Reply With Quote
Old 23rd May 2007, 21:26   #3
BHPian
 
sathyaprakash's Avatar
 
Join Date: Jul 2006
Location: chennai
Posts: 446
Thanked: 44 Times
Default

i own a unicorn for more than two years and i have not experienced any thing like this may be manufacturing defect pls check with the right mechanic
sathyaprakash is offline   Reply With Quote
Old 23rd May 2007, 21:38   #4
BHPian
 
Join Date: May 2006
Location: Pune
Posts: 127
Thanked: 84 Times
Default

The bike does not accelerate smoothly in 1st gear (only) & that too at places like signals where you stop and start again....It's a jerky motion.
The 4000 rpm I'm talking about here is in all the gears;be it 1st or 5th.

Thanks,
rb2399
rb2399 is offline   Reply With Quote
Old 24th May 2007, 14:31   #5
BHPian
 
Join Date: Mar 2006
Location: Hyd
Posts: 252
Thanked: 19 Times
Default

the clutch may be too tight which may be the cause.
nosfreak is offline   Reply With Quote
Old 26th May 2007, 06:18   #6
Senior - BHPian
 
mithun's Avatar
 
Join Date: Jan 2006
Location: Cochin
Posts: 1,950
Thanked: 49 Times
Default

Try to re-adjust the clutch and also make sure that the cable is not stuck anywhere.
mithun is offline   Reply With Quote
Old 26th May 2007, 15:23   #7
Team-BHP Support
 
Zappo's Avatar
 
Join Date: Oct 2005
Location: Hyderabad
Posts: 5,648
Thanked: 1,997 Times
Default

At 800 kms your bike would not have completed its run-in period as yet. I would suggest you do not force it at such high rpm levels. Till the engine properly beds it tends to feel a bit harsh at high rpm. Thats natural.

Also, what is clutch judder with respect to a bike?
Zappo is offline   Reply With Quote
Old 4th August 2007, 04:07   #8
Senior - BHPian
 
rider60's Avatar
 
Join Date: Mar 2007
Location: Bhagyanagaram. (A.K.A. Hyderabad)
Posts: 1,619
Thanked: 47 Times
Default

1.check the clutch cable if the cable inside is properly lubricated.
2.check if the choke cable is in proper condition i.e. if its jammed or harder.
i had the same problem of jerking and found out that my choke cable was jammed due to rain. it happened this reason and my bike is new too i bought this april. but i chose the non mag version!

the problem can also be from the improper setting of the crab, before the runin period no bike gives the optimal mileage for the crab is set to pour in more fuel to ensure correct completion of bike's runin as this ensures there is enough fuel in the engine to lubricate it.
if the crab is not been tuned by a experienced mechanic after the first service the above mentioned problems are inevitable!

Last edited by rider60 : 4th August 2007 at 04:11.
rider60 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Virus problems/spyware problems! post here! SirAlec Gadgets, Computers & Software 10 16th July 2014 00:05
Honda CB Unicorn/Unicorn Dazzler - Technical Specifications & Feature List bluevolt Motorbikes 0 25th September 2011 15:35
Mahindra Scorpio CRDE 2007 - Problems 'n' Problems chandrda Technical Stuff 3 13th November 2009 09:59
RTR/Unicorn or Avenger - which one? Edit: Bought Unicorn - Dealer woes manish7 Motorbikes 34 24th April 2008 11:53


All times are GMT +5.5. The time now is 06:01.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks