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MAHA LPS2000 conversion

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(@danny_530)
Member

@vishara-jyasekara Yes I've converted it with YourDyno instrument and PS, and I've sold the old control with all the boards to another LPS2000 owner that has got board issues just like you.

It works really well actually, as specific tasks for LPS2000 conversion I remember that I swapped the RPM sensor with an Hall effect one (they're VR), I've machined the RPM wheel to have less teeth and better spaced, and swapped the air lift system solenoid with a 230v AC one (it was 24V DC if I remember correctly).

The rest was just about wiring it all, and make it working with new data acquisition and brake power supply (test, calibration, etc.).

There's the wiki section for that, and Jostein is very helpful, if you have basic electrical knowledge (like how to build and modify home electrical system) you'll not have any issue in wiring the new system.

 

This post was modified 2 months ago by Danny_530
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Topic starter Posted : 16/07/2021 4:42 pm
(@admin)
Member Admin

@vishara-jyasekara, the Maha LPS 2000 is a common dyno to upgrade. Not a problem! You need the instrument box and a power supply. If I remember right you need an RPM sensor too, but you can send me a pic to jostein@yourdyno.com then I can check. You can reuse the load cell if it is in good shape. 

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Posted : 16/07/2021 9:10 pm
(@chipg1956)
Member

@danny_530 Were you able to use that load cell?  I have something similar and am converting a Maha/Sun emissions dyno to a small engine dyno.  Chipg1956@gmail.com.

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Posted : 19/07/2021 2:09 pm
(@thdyno)
Member

Im using the maha loadcell with yourdyno

It works perfekt🙂

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Posted : 19/07/2021 7:04 pm
 Jay
(@vishara-jyasekara)
Member

Hi danny_530,

 

Thank you so much for the reply and valuable advice. As you say I may have to swap RPM sensors? I am not trying to modify the RPM wheel so I need to see the possibility of VR sensor. Anyway I might need more advice from you, and Ill update you once I start the project. Thank you so much!

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Posted : 20/07/2021 6:53 am
 Jay
(@vishara-jyasekara)
Member

@admin 

Thank you so much. I just wanted to know the possibility and complexity of upgrade. According to Danny_530, it seems upgrade can be done easily. I will get a instrument box and a power supply. Before that Ill send you pics of existing VR sensors, and load cell. So far as I see all the parts are in good shape. Thanks again.

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Posted : 20/07/2021 7:06 am
 Jay
(@vishara-jyasekara)
Member
Posted by: @thdyno

Im using the maha loadcell with yourdyno

It works perfekt🙂

Thanks! my intention is to use the same existing load cell. 

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Posted : 20/07/2021 7:12 am
(@chipg1956)
Member

@thdyno What do you use for the lever length when calibrating?  The mounting on the inside?  The mounting on the frame? Or the middle of the load cell? 

Thank You,

Chip

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Posted : 13/08/2021 2:45 pm
(@thdyno)
Member

@chipg1956 

Im using a 1mtr. Lever and load it with 70kg.

I will try to post a picture later today

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Posted : 14/08/2021 7:52 am
(@thdyno)
Member

Here is the lever im using.

The spring under the lever is to compensate for its weight. 

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Posted : 15/08/2021 7:30 pm
(@thdyno)
Member

The spring🙂

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Posted : 15/08/2021 7:32 pm
(@thdyno)
Member

Mounting point on load cell

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Posted : 15/08/2021 7:38 pm
(@danny_530)
Member

@chipg1956 I've used a S type load cell because I wanted to be able to run vehicles in both direction, plus the dyno was rated for 260kW in MAHA's datasheet, even if the brake would be capable to brake more... so I wanted to use a cell that I was sure it would be good to measure the maximum possible (for the available grip of course).

 

Indeed,  it has just worked at 40% while measuring a 600nm/400ps vehicle (power sweep)

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Topic starter Posted : 15/08/2021 7:48 pm
(@danny_530)
Member

@chipg1956 I've used a S type load cell because I wanted to be able to run vehicles in both direction, plus the dyno was rated for 260kW in MAHA's datasheet, even if the brake would be capable to brake more... so I wanted to use a cell that I was sure it would be good to measure the maximum possible (for the available grip of course).

 

Indeed,  it has just worked at 40% while measuring a 600nm/400ps vehicle (power sweep)

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Topic starter Posted : 15/08/2021 7:55 pm
(@danny_530)
Member

@vishara-jyasekara you hav to use an HALL effect sensor for RPM measurement, so you can change the sensor, of get a small board that is used laso with standalone ECUs to give to yourdyno the correct input from a VR sensor. 
Those kind of board used to be cheap, but an HALL sensor is cheaper and is faster to make it working just changing the sensor.

Modify the wheel is another business, I did it because they're like 100 teeth and they're much close, it modify it in a way that, at the end, it would be a wheel like suggested in wiki section (for teeth number, dimension, and space between teeth)

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Topic starter Posted : 15/08/2021 8:06 pm
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