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**SriramEfunds** · 04-28-2010, 07:34 PM

Originally posted by Shreeni0403 View Post

Putting ZMA's sprocket will increase acceleration.!! It might ve 2T less at rear, but also has 2T less at front. So the initial will be much much better than the stock. You can also try the CBZ classic sprocket (full set).

But again, be aware that top-end will go for toss.

Thank you Shreeni.

Would rather stick to new gen unicorn 43 teeth sprocket kit.

**SriramEfunds** · 05-30-2010, 02:44 PM

Update:

Well, it is long time since I had a chance to care for my Unicorn. Few days back went to the dealer and check with him for the stock, luckily he had. So bought the kit and 2 wheel bearings and sprocket bearings.

Yesterday, went to my known experienced mechanic who handle the bike in very calm manner. He fixed the chain sprocket and asked me to go for a ride. I could feel the bubbling energy throwing out when I twisted the throttle.

There was a complete difference from what it was when I drove down to the workshop and after fixing it.

I told him that this is the first time I ever changing the chain sprocket. He said there was lot more than mud/sand inside the front sprocket. The vehicle had run alteast 45k

He is now suggesting that I change the clutch plates as he feels it should be for better smoothness.

Is it advisable to change the clutch plates to my bike which had done 45k on odo?

**aargee** · 05-30-2010, 04:25 PM

@Sri - is it only the friction plates or the clutch plates in addition? Change the friction plates provided you feel gear or clutch skipping. Those are early symptoms.

**SriramEfunds** · 05-30-2010, 07:23 PM

Looks like the clutch plates sounds worn out. I was advised to change it as it was never done at all. Will look into this deep. I'm getting these adjusted for the interstate G2G.

**SriramEfunds** · 06-02-2010, 12:07 AM

Today I got my bike changed with new clutch plates

. The change in acceleration was brilliant when compared to what was I felt before.

Also, I noted while leaving the bike in idle, there was a hole beneath the silencer pipe at the elevation where there are few welded holes and one of them is open and could feel the air coming out. I'm noticing for the first time, is it common for all unicorn? I'm bit worried now.

**psycho 98** · 06-02-2010, 12:18 AM

Originally posted by sandeepcf View Post

I am also using Unicorn 2005 model and its acceleration is really poor. So have you changed the sprockets? Felt any difference? I think its not only the sprockets but also the Carburetor which is the culprit. Can we install any other carburetor in its place? A person at Hero honda said Unicorn and Xtreme's engine is almost identical except for the crankshaft. Is it true?

Nopes crankshaft is same, the cam the carb the jets are different.

Originally posted by SriramEfunds View Post

Also, I noted while leaving the bike in idle, there was a hole beneath the silencer pipe at the elevation where there are few welded holes and one of them is open and could feel the air coming out. I'm noticing for the first time, is it common for all unicorn? I'm bit worried now.

Its there on all bikes, its there on my xtreme too, dont worry.

**SriramEfunds** · 06-02-2010, 12:22 AM

^ Ah! you saved my brain from being worked out ! Thanks Pradeep.

**som88** · 06-02-2010, 12:32 AM

The reason they changed the sprocket in the 3rd gen Unicorn was to compensate for the 10mm increase in tyre width.
1st and 2nd gen have a 90 section at the rear and the new ones have a 100 section

The hole is a design feature, drilled there to drain any fluid trapped inside the silencer

**Shreeni0403** · 06-03-2010, 12:34 PM

Originally posted by som88 View Post

The reason they changed the sprocket in the 3rd gen Unicorn was to compensate for the 10mm increase in tyre width.
1st and 2nd gen have a 90 section at the rear and the new ones have a 100 section

The hole is a design feature, drilled there to drain any fluid trapped inside the silencer

Well its not 10mm difference, its 25mm.

3.00 is in terms of inches and 100 is in terms of mm.
3.00 inches is approx 75mm +/-

Yes definitely that change in sprocket makes difference.

One guy has swapped the sprockets to that of classic CBZ on his 2nd Gen Uni. Imagine the initial of that bike. 14T/46T

**SriramEfunds** · 06-03-2010, 03:13 PM

^ Nice information.

I hope the change to 43T sprocket would not make a hugh difference in economy. There is definitely remarkable difference in the pickup. I'm happy about it.

**SriramEfunds** · 06-03-2010, 03:19 PM

Also trying to crack the Trip meter speedo console fit on to my bike.

The H.A.S.S supervisor said there will be a change in clamp seating position. I'm still not convinced.

Reason? I had a look at the new Trip meter speedo and compared with the old outer case. The back mould had the same seating position and it was same to same. Only the black upper case has difference on the front curve (skirt kinds) which I believe is slightly thick.

**Shreeni0403** · 06-03-2010, 05:01 PM

Originally posted by SriramEfunds View Post

Also trying to crack the Trip meter speedo console fit on to my bike.

The H.A.S.S supervisor said there will be a change in clamp seating position. I'm still not convinced.

Reason? I had a look at the new Trip meter speedo and compared with the old outer case. The back mould had the same seating position and it was same to same. Only the black upper case has difference on the front curve (skirt kinds) which I believe is slightly thick.

I am using old meter on new clamp

This might have answered everything

**SriramEfunds** · 06-03-2010, 05:17 PM

^^ Interesting..

also tempting to get the new speedo console, also afraid what if the experiment fails?
Honda guys do not take the goods back. Atleast after they warned me.

I'm not going to leave half hearted. Will keep posted on further update.

**sandeepcf** · 06-11-2010, 07:43 PM

Unicorn 2005 model 15/42T
Today thought of changing the rear sprocket wheel to 43T. But they said its not available as single but you have to buy the entire set. So bought 14T front sprocket drive of CBZ and got it changed.
The acceleration improved little but for the same speed
with 14/42T RPM is higher than with 15/42T noisy and irritating.
so if I change to 15/43T will I face the same problem?
what is the difference between changing the front sprocket vs rear one?

**SriramEfunds** · 06-12-2010, 06:30 PM

^ I would not personally suggest you to experiment with chain sprocket of mixing and matching. It would actually deceive your expectation.

As I posted earlier, latest generation Unicorn Chain Sprocket kit which comes with 43T will be nice on 2005 Unicorn.

I think there would be slight drop of mileage which I'm yet to determine.

I have always felt remarkable difference in terms of pick up and pull that of 42T sprocket.

Yes, as you said, it was not available earlier with Honda dealer, after giving a gap of a month, was able to procure.

May be trying with other dealers in your city and building rapport would help in knowing when is the stock expected.

Should you get that on your bike, do post and let me know the difference.

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