Announcement

**Divya Sharan** · 12-29-2013, 11:40 AM

Re: Hero Honda Karizma ZMR

Originally posted by vijaycool View Post

On the net zmr alternator is 188w capacity. Not sure what is the actual capacity.

Sent from my GT-P3100 using Tapatalk

Originally posted by rreneav1987 View Post

@Divya Sharan or @psr sir might be able to give the exact figure.

Sent from my Spice Mi-530 using Tapatalk 4

188 W is KariZMA's capacity, whereas KariZMR has 238 W alternator.

**psr** · 12-29-2013, 11:59 AM

Re: Hero Honda Karizma ZMR

Originally posted by Divya Sharan View Post

188 W is KariZMA's capacity, whereas KariZMR has 238 W alternator.

Yes you are right again..and both ZMA and ZMR have three phase Rectifiers,Regulator .

**vijaycool** · 12-29-2013, 12:09 PM

Re: Hero Honda Karizma ZMR

Originally posted by psr View Post

Yes you are right again..and both ZMA and ZMR have three phase Rectifiers,Regulator .

If rr unit is 238W then why the battery capacity is so less 7Ah than other bike which has even poor alternator and higher capacity. Does the high current on a small battery makes its life short.

Sent from my GT-P3100 using Tapatalk

**rreneav1987** · 12-29-2013, 12:11 PM

Re: Hero Honda Karizma ZMR

Originally posted by psr View Post

Yes you are right again..and both ZMA and ZMR have three phase Rectifiers,Regulator .

Sir, any alternate RR unit that we can use on ZMR? Your suggestion would be helpful.

Sent from my Spice Mi-530 using Tapatalk 4

**Divya Sharan** · 12-29-2013, 12:24 PM

Re: Hero Honda Karizma ZMR

Originally posted by vijaycool View Post

If rr unit is 238W then why the battery capacity is so less 7Ah than other bike which has even poor alternator and higher capacity. Does the high current on a small battery makes its life short.

Not sure of the reason, but ZMR doesn't even have a 7 AH battery, its rated 6 AH. ZMA has had 7 AH since the beginning, but nothing to worry. Riders have upgraded to Amaron 9 AH without any issues, just the battery cage needed some modification in shape. But, I'm still using the stock battery and I have a 55W Osram NB, 2 projector pilot lamps, a 30 LED corona ring that's used as DRL and it has been 41+k kms and the battery is fine. It (the bike) doesn't need a more powerful battery actually.

**rreneav1987** · 12-29-2013, 12:38 PM

Re: Hero Honda Karizma ZMR

Originally posted by Divya Sharan View Post

Not sure of the reason, but ZMR doesn't even have a 7 AH battery, its rated 6 AH. ZMA has had 7 AH since the beginning, but nothing to worry. Riders have upgraded to Amaron 9 AH without any issues, just the battery cage needed some modification in shape. But, I'm still using the stock battery and I have a 55W Osram NB, 2 projector pilot lamps, a 30 LED corona ring that's used as DRL and it has been 41+k kms and the battery is fine. It (the bike) doesn't need a more powerful battery actually.

How often do you ride at nights and which is the longest you have done kn your bike at night..

Can you do me a favor?? Can you check with multimeter with headlights on and let me know what the multimeter reads.. and then raise the acceleration and let me know the multimeter reading.

Sent from my Spice Mi-530 using Tapatalk 4

**Divya Sharan** · 12-29-2013, 02:00 PM

Re: Hero Honda Karizma ZMR

Originally posted by rreneav1987 View Post

How often do you ride at nights and which is the longest you have done kn your bike at night..

Can you do me a favor?? Can you check with multimeter with headlights on and let me know what the multimeter reads.. and then raise the acceleration and let me know the multimeter reading.

My DRL remains on every time I ride. The HL comes up for about 60-75 min daily in traffic (office to home, 25 km one way).
Since I ride for 50 kms at least everyday, I guess the battery gets well charged. Lets see, if I can test the multi-meter reading today.

**psr** · 12-29-2013, 02:05 PM

Re: Hero Honda Karizma ZMR

Originally posted by vijaycool View Post

If rr unit is 238W then why the battery capacity is so less 7Ah than other bike which has even poor alternator and higher capacity. Does the high current on a small battery makes its life short.

Sent from my GT-P3100 using Tapatalk

the CBR 250 has much higher alternator output and has the same 6 amps battery .

Originally posted by rreneav1987 View Post

Sir, any alternate RR unit that we can use on ZMR? Your suggestion would be helpful.

Sent from my Spice Mi-530 using Tapatalk 4

there is none..

**ravi@17bhp** · 12-29-2013, 02:53 PM

Re: Hero Honda Karizma ZMR

Originally posted by rreneav1987 View Post

How often do you ride at nights and which is the longest you have done kn your bike at night..

Can you do me a favor?? Can you check with multimeter with headlights on and let me know what the multimeter reads.. and then raise the acceleration and let me know the multimeter reading.

Sent from my Spice Mi-530 using Tapatalk 4

I have used headlights (55/60w) for 12 hours continuously at nights without any issues.

Just now I checked my ZMAs battery voltages (new Amaron 9A MF battery). Before starting its ~13.8 volts; idle ~14.5 volts; and at 4k rpm ~14.8 volts. Headlight on at idle ~13.5 volts; when revved to 4k rpm, with headlight on, ~14 volts.

Check resistance in the power line between RR unit and relay to rule out wiring issue. Swap RR unit from another ZMR and see. Then the only culprit remained would be alternator.

**rreneav1987** · 12-29-2013, 10:08 PM

Re: Hero Honda Karizma ZMR

Originally posted by ravi@17bhp View Post

I have used headlights (55/60w) for 12 hours continuously at nights without any issues.

Just now I checked my ZMAs battery voltages (new Amaron 9A MF battery). Before starting its ~13.8 volts; idle ~14.5 volts; and at 4k rpm ~14.8 volts. Headlight on at idle ~13.5 volts; when revved to 4k rpm, with headlight on, ~14 volts.

Check resistance in the power line between RR unit and relay to rule out wiring issue. Swap RR unit from another ZMR and see. Then the only culprit remained would be alternator.

Thank you Ravi, this shows how bad my bike condition is in. on my bike, 14 Volts was showing up only after 8K + RPM and with load, the battery never even went above 12.5 Volts..

I am going to get this done either tomorrow or Tuesday bunking office for some time.. if in case they dont have a ZMR in the service center, then I will ask them to try with a new Karizma RR Unit and check if that brings any changes.. if still the problem is persisting, then it is time to get the starter plate changed..

in case the ZMR RR Unit isn't available, is it alright to use the Karizma's RR Unit? If yes, what is the cost? 1600/- ?? the starter plate costs ~1600/-

once i get this done, it is time to get the battery changed under warranty

**sibun** · 12-29-2013, 10:54 PM

Re: Hero Honda Karizma ZMR

@rrneav- Get the regulator/rectifier changed as coil base give hardly any problem.

Most of the time it is the rectifier at fault.

**ravi@17bhp** · 12-29-2013, 11:53 PM

Re: Hero Honda Karizma ZMR

Originally posted by sibun View Post

@rrneav- Get the regulator/rectifier changed as coil base give hardly any problem.

Most of the time it is the rectifier at fault.

If the RR unit fails, then it should be a total failure, like its main circuit blown due to excessive heat (means, its not passing the current from generator, completely blocking). If the regulator function fails, then it would result in blown bulbs. Just some analysis.

BTW, isn't there any way to check if the three leads from the generator passing the current to RR unit?

**sibun** · 12-30-2013, 12:32 AM

Re: Hero Honda Karizma ZMR

Originally posted by ravi@17bhp View Post

If the RR unit fails, then it should be a total failure, like its main circuit blown due to excessive heat (means, its not passing the current from generator, completely blocking). If the regulator function fails, then it would result in blown bulbs. Just some analysis.

BTW, isn't there any way to check if the three leads from the generator passing the current to RR unit?

You are partially right but incase of a blown regulator resistance will increase in the RR unit which will decrease its efficiency.

My experience with bike RR unit is very less as far as my limited knowledge on bikes is concerned.

But in BAJAJ Chetak scooter which has full AC circuit our scooter was re-built from ground up with a cost of Rs .25,000( costed Rs .23000 in 1992 model chetak 12V electronic)
the light was very less,changed magnet coil no change in light.

Then just changed the rectifier unit and light was back to normal and would put to shame our halogin bulbs in new bikes with its plain bulb.

**ravi@17bhp** · 12-30-2013, 12:42 AM

Re: Hero Honda Karizma ZMR

Originally posted by sibun View Post

You are partially right but incase of a blown regulator resistance will increase in the RR unit which will decrease its efficiency.

Thanks for the info. Also, is there a possibility of resistance development in the wire between RR unit and relay, which is causing supply of low voltage? Just a doubt.

**sibun** · 12-30-2013, 12:54 AM

Re: Hero Honda Karizma ZMR

Originally posted by ravi@17bhp View Post

Thanks for the info. Also, is there a possibility of resistance development in the wire between RR unit and relay, which is causing supply of low voltage? Just a doubt.

Even if wire between rr unit and relay has increased but it is not significant to drop so much voltage. It is a clear case of failed RR unit.

@rrneav- Meet some other ZMA/ZMR xbhpians and swap and try with multimeter.For testing purpose any one from ZMR/ZMA will do. Fit the other bikes RR unit and check the volatge and if it is ok, then well and good nothing to worry.

Regarding karizma being 188 watt to ZMR being 248 watt then while testing it doesn't matter as we are checking the voltage and not load. If the other RR unit is pumping voltage then your RR is gone and get a new RR from ZMR.

Announcement

Hero Honda Karizma ZMR

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment