MTD Novotrac conversion

agniusm

1 MW
Joined
Apr 16, 2011
Messages
2,577
Location
Lithuania, Zarasai
Bought this for conversion working and after 1.5 years engine gave up. Looking for some info. What would be RPM at the OEM engine shaft generally? I need to pick the system Voltage to make it close to stock. The stock engine is briggs and stratton 259707-0146-01 but i cant find manual or specs cause its prob too old

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Its difficult. So blade tip speed should be 210-230mph. Blade is 66cm or 26".As much as i could dig up blade pulley is 7" or 178mm
and motor pulley is 100mm OD., thats 1:1.78 reduction.
Need to calculate motor rpm from this :cry:
 
When etek was being used as a drop in replacement for mower motors it was ~3500 at 48v and fit in fine. I don’t know if specific mowers may have been different but that worked great on my craftsman
 
Made motor mounting plate:

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...and mounted the motor:

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Controller also mounted:

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Fitted coulomb gauge, 220V charging port, printed waterproof cap:

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Most components fitted. Battery, behind 30A charger, Eaton PSU:

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Video:

[youtube]bVovWwCPirc[/youtube]
 
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