at 2 turns motorcycle accelerating nicely.but at constant rpm like 4000rpm down slope engine is not smooth.it is giving hickups.is it normal.

is the rubber pipe between carburettor and engine to be closed while doing carburettor tuning

what willl be the exact number of turns of air fuel mixture screw to get optimum efficiency.i am asking from the point where the screw is fully tight.can anyone help

Would you have any idea of the reasons for the rear suspension to start bottoming out even with a 60kg pillion? Didn't used to happen 6 months ago. No cracks or deformity visible in the rear spring.

It may pose a risk while riding if not done properly. I changed new sprockets last Sunday for my peace of mind.

----consecutive posts auto-merged-----


There is no specific rating for old Unicorn. Initially Honda as well as Hero were using 20w40 for their 150CCs. If you refer the Unicorn manual, there is a chart provided which gives a suggestion of which oil to use depending on temperatures. I have used 10w40, 15w40, 20w40, 20w50 and now stuck with 10w30 as I felt it to be good. Received my order of 3 HPRacer4 Synth 10w30 from Amazon today, though I have filled Mobil 10w30 at 60000 KM oil change which I had purchased last month as HP was not available. Just 150km done with Mobil. So can't comment yet.

Why would you not recommend the removal of a few chain links? Is it detrimental to the chains strength? I have a 07 model too.

Is the old unicorn 150 rated for 10w30 oil? Or is the new unicorn rated for that grade? 10w30 cannot possibly be suited for Indian summers.

Hello all. I have recently bought a Honda Unicorn from year 2011 which has clocked 42K+ kms and has got a perfect engine (as far as I can understand). I am planning to do the rides ranging from 58 km to 300 km in a day. I need to do some modifications for converting the motorcycle to a touring machine. I am not looking for cosmetic or performance modifications.

Below are the modifications I am thinking about (but not sure how to go about them)

1. Seating - I love the seating on a Unicorn 150. How do I make it better? I have decided on spacers for my stock handle bar to make it a little high. Is there anything I could do with the seat to make it more comfortable?

2. Luggage - I am planning on using 3 of my back packs to carry all my gear and cloths since these would be all small rides. My question is, how much can I carry in KGs just in case of a bigger plan? Can I install metal racks on this bike and carry more weight? How much weight can a 150 cc bike carry?

3. Is a bigger wind screen advisable?

That's all.

I am 39, live in Nagpur, planning to go to all the jungle locations to start with in next one year. I am 5'11 and 92 KGs. I have done 2000 KM rides in past on 350 cc bullets and not new to riding. I am sure I won't face extreme terrain.

Am I good to go? What else can you suggest?

Thanks in Advance.

bB

Unicorn has a analog speedo and can be reset. Ensure if the 2009 model really has run only 30K kms. Better to purchase a bike from a known seller.

My advice would be to stretch your budget a bit and get a new Bajaj CT100B. I believe you can get it for less than 40000 on the road and is a value for money bike.

----consecutive posts auto-merged-----

My Chain was making a lot of khat-khat noise while accelerating. Found that the chain has extended to the maximum level.

I did some juggard in a professional way. Removed a couple of chain links with the bosh cutting tool i have. Changed the front Sprocket from 14T to 15T. The rear is stock.

Now 60KMPH comes at 4900RPM instead of usual 5100RPM.

I have run 1000 Kms with this setup. No issues so far. Mileage fluctuates between 50-55 KMPL.

This is the first time I am doing chain link removal and would not be recommending it.

Will be changing my entire chain-sprocket during the 61K kms service.

The rear tire on my Unicorn has completed 60K kms and into the ninth year. Still has good threat depth left. I believe 33K is very early for tire change. These MRF zappers are hard compound tires which usually last long but a little compromise on grip. Not a deal breaker.

The Front MRF which came with my Unicorn has completed 70K kms (48K in Unicorn and rest in a family's Splendor) and can still go for some 5000 Kms.

Yes, As someone mentioned above, rubber becomes very hard after 4-5 years.

Customized double dome looks good but it is useless. My friend has one and it can only signal others that there is a vehicle coming by. Also it requires rework of many items costing money. Better stick to stock.

----consecutive posts auto-merged-----



I have been using HP Racer4 Synth 10W30 for last 3 oil changes. Never felt any oil better in Unicorn that this one.

XXw30 will be thin than XXw40 in engine operating temperatures. So as per Honda's recommendations, better stick with 10W30.

I am happy to say that after using this oil, I am able to cruise at 6000 RPMs & 5th gear without any vibrations. Also I am getting 57-58 KMPL constantly (Average for last 40 litres of Petrol). I am fueling from a BP bunk owned by TVS or at Reliance at any cost.

Can someone share the cost of the part, labour and time associated with replacing the ball bearing behind the front sprocket?

Hi,

I don't know this problem has been discussed here before, I did some search before posting but couldn't find anything relevant so posting one.

My Honda CB Unicorn 150(2009 Model) gives a whining sound while riding, but never gives the same sound when bike is in neutral. When the bike is in neutral, how much hard I rev the engine, I can't here the noise. But while riding after crossing 3000 rpm in any gear it gives a whining sound. I can here the same noise in other old unicorns as well(new unicorn never gives that sound).

When I checked with local mechanics, one guy said that sound is coming from clutch plate, it needs to be replaced. Another guy said, it coming from the meter, if we service the meter whining sound will be gone.

Any thought on this guys. Thanks in advance