EV conversion calculation | Concept of EV design | EV basics | Power & Torque calculation for ev |

[@neerajsingh9556]

Thank you Bhai, mae last 2 years se EV aur Solar panel related videos dekh raha hu. Mera favorite KZbin channel PlugInIndia hai but for learning purpose you are The Best Bro, thanks a lot again Guruji 🙏

[@motomanicevs]

Many thanks...

[@Alex-rn8mh]

Hi guys very good video. In the power calculation you might want to correct the formula to add the power needed to accelerate the car from 0-60km/h. Power to accelerate Pacc=mass * acceleration = m * dv/dt where m is mass of the car, dv is variation of speed from 0 to 60km/h that is 0 - 16.67m/s, and the dt is variation of time from 0 - to max time to achieve the speed - this is imposed say 5 sec. So Pacc = 700 kg * (16.67 ms/ divided by 5 sec) = 2334 Watts or 2.3 kW. If you considering only uniform movement (without any acceleration) that the formula is corect, just the Power to climb the gradient you need to multiply the gradient force (Fgrad = mass * 9.8acc * sin10) also with speed v (m/s) like you did for the rolling resistance and aerodinamic drag.

[@motomanicevs]

Thanks..

[@chiragmodi5932]

The thing you are talking about is accelerating force. Power will be that force*velocity

[@prakashraokujala7770]

Thank you very much for your valuable calculations, being a design man I can't find this kind of information thanks once again

[@techs9115]

Good experiment brothers your knowledge sharing about nano so osome

[@motomanicevs]

Many thanks..

[@dipakmohkar9172]

Bro really you are taking too much efforts to make such interesting engineering Videos...once again thanks for helping keep it up...

[@motomanicevs]

Many thanks...

[@thunderstrom7157]

Sir ek question hai, ajkal ev car mei specification hoti hai isme motor power jyda hoti hai battery power se to phi battery power kaise supply kr pati power aur range e.g. ke liye nexon ev mie 30kwh bttry hai aur motor power 120kw ye logic smjh nhi a raha 🧐.....

[@dilippradhan1167]

Thank You bro for your various important information

[@motomanicevs]

Thanks..

[@vinaynigam4909]

Very good illustration. Hope your dream Nano must have been ready by now. All the best wishes.

[@motomanicevs]

Yes sir it's in very good progress soon will release information...

[@aseducationalchannelelectr3982]

While calculating gradient power we have to multiply gradient force by velocity.kindly consider in this.thus tot motor power will increase. Rest good video

[@sarduddin]

Waiting for your new updates. Regards

[@arzanist]

Awesome explanation. Bro you are doing great. Wish you luck. Please improve your channel branding and editing , You can do wonders. If you ever wish to rock on KZbin. Else you are anyways a rockstar engineer. :)

[@motomanicevs]

Many thanks...

[@Teckbhan]

Muzhe aaap bataoo , after conversion govt rto approve hota hai kya ,agar hota hai to aap uspe video banaoo

[@dr.sumitkumarverma9908]

Dear Sir, radius of your wheel is 0.15m rather than 0.30m. So your rpm value will be 944 rpm...and required torque becomes 92.96 Nm and Tmax for top gear is 43.43 Nm... therefore 100Nm motor will be sufficient... Good Luck .....

[@motomanicevs]

Dear sir thanks for reply let's calculate again Nano tyre 135/70 R12 Rim dia 12 x 25.4=305mm Tyre height 135x70% x2 = 200mm Total dia = 505. r = 252 or round off 0.3mtr..

[@pravindahiya719]

The humility ! Salutes for that !

[@abuwaqas1]

From where I can buy conversation kit

[@motomanicevs]

Pls Whatsapp me on 7648940132..

[@sankethowal3748]

hello, why have you assumed coefficient of friction as 0.02, as per me it is usually between 0.4 to 0.7 for dry roads and 0.1 for wet roads

[@motomanicevs]

It's a standard for tar/ concrete road and you can find this value by searching online...

[@sankethowal3748]

@@motomanicevs Ok, I got my mistake, I substituted sliding friction value instead of rolling friction, thank you

[@AaaaAaaa-lm9go]

Power formula.. M inki value fix hi rhti h kya Jese ki rolling resistance Air density Coefficient of drag

[@motomanicevs]

Yes..

[@guruengineeringcorporation1319]

FROM WHERE YOU GET GEAR RBOX EFFICIENCY 0.85 AS MENTIONED IN VIDEO

[@AKumar-fc6ek]

18:56 U havnt considered Diff. gear ratio of Tata Nano So Tmax = 51 x 3.45 x 4 = 704 Nm on wheel. Here 4 is rear wheel differential ratio. Now to put it other way, how not considering differential is wrong - Lets say Engine RPM 1500 then in 1st gear Wheel RPM = 1500÷3.45 = 434 Speed = 434 x 60 x 1.9 ÷ 1000 kmph = 49 kmph in 1st gear !!! possible ? Now divide this speed by Tata Nano diff. Ratio ~ 4:1 Speed = 12.5 kph....looks good

[@tosidaeng.1095]

Nice explanation Sir. Just a little bit question, (m x g x sin 10) to be a power should be multiplied by velocity. CMIIW

[@motomanicevs]

Yes for power we need to multiple force and velocity...

[@mihirvardhan9267]

Hello sir, mujhe aapka video bohot pasand aaya. Aapki iss subject mein knowledge bohot hi inspiring hai. I might be wrong but I think maine ek small mistake dekhi thi video mein - aapki linear travel calculation mein aapne radius ki jagah diameter use kiya tha. It does not have much impact on your final conclusion but I thought to comment this for any others doing this calculation.

[@dsbupadrasta2385]

At 14:57 your units are wrong, you also need to multiply velocity with gradient force as well. So the maximum power of your nano is 27.97 kW

[@guruengineeringcorporation1319]

YES YOU ARE RIGHT

[@manimaran1737]

What power required for converting scorpio and kit price

[@tejassankpal5574]

Video was very helpful

[@motomanicevs]

Thanks..

[@posabalanjaneyulu1176]

Very good explanation. Keep on moving

[@PavanKalyan-qc2ln]

Your viedo is Very interesting and helpfull for calcuations.. ... Very good job.... Can i have electric cycle calculations.. Or both ev and electric cycle have same calculations.. Plz tell me..

[@motomanicevs]

Thanks. You can do from same calculation.. Some coefficient will different in calculation..

[@akshoy1867]

Sir up to Mahan Guru ho Sir I am now totally your fan Sir mai upse baat kaise karr sakta hu sir please sir

[@bibhasjana6040]

How the torque figure change when you switch to motor??? It will remain same.

[@motomanicevs]

Bldc have higher starting torque...

[@bibhasjana6040]

But the calculation remains same.

[@tustumallick4972]

Thanks sir

[@motomanicevs]

Thanks..

[@jagdishsidhu208]

Your videos are great can you provide your emai for enquiries about my DIY ev conversion project and for procuring some of the required parts.

[@motomanicevs]

Pls WhatsApp me on 7648940132...

[@rachitdhond4363]

Can you suggest me some books for these formulae's as I want to cite them

[@motomanicevs]

I am not sure..

[@amritamar3918]

Any fundamentals vehicle dynamics book

[@abhijeetbhavsar2301]

Rainy season mai kya karoge

[@patelmarvel7300]

Sir ji aapne kaha ke tata nano ke wheel par max torque 150nm apply hota hai... But aapne final drive ratio se multiply kyun nhi kiya issey?? I mean differantial mein bhi to gear reduction hota hai aur tata nano ka final drive ratio 4.5 hai.... To max torque at wheels is 150x4.5 nm hogana? Wheel par max torque engine torque x 1st gear ratio x final drive ratio hota hai.... Correct me if i m wrong.... Thnk u

[@motomanicevs]

As per my knowledge there is no gear reduction in differential... It's only allow the difference in speed for both wheel to make car turn ... So calculation of torque on wheel remain same.

[@patelmarvel7300]

@@motomanicevs sir aap achhe se reaserch kijiye plz... Main apki galti nhi bata raha hun par aapne wo important calculation miss krdiya hai to kehna zaroori samjha.... Tata nano ke technical specs aap dekhein usne final drive ratio diya hai.....

[@bibhasjana6040]

Yes there should be some gear reduction in differential gear.

[@selfstudymechanicaltechniques]

Sir why we have taken .3 as radius, it is the dia of rim.

[@manishsaini7271]

1st gear me 150nm ka torque milta h kya

[@motomanicevs]

Yes..but on the higher speed..

[@munkazatips8994]

Very well explained..... Good luck..... By the way....What are you by profession???? reply...

[@motomanicevs]

I am an professional engineer from a OEM auto industry and a true EV lover...

[@shahbazshaikh7177]

Sir static friction count m kyo nahi Kiya Kyoki static frition >> rolling friction

[@primeedits840]

Best video...lekin introduction thoda kam de plz

[@vitulbansal4319]

Hi buddy, nice work. But I think the formula is wrong. You missed the velocity in the gradient term. It should be m*g*v*sin(10). Please correct if i am wrong

[@motomanicevs]

Yes you are correct. But this applicable when you want to drive bike in gradient with high speed only and resid on hilly area. Thus no need to calculate because the bldc motors take care of normal grading due to high torque. But if you want to add it increase the motor capacity. For more details you can refer my latest video on electric motorcycle design..

[@RajPatel-by3wj]

Technical pratha ki nano 3kw me 56km/h ki speed kaise deti hai?

[@motomanicevs]

Let's see how my car will perform...

[@RajPatel-by3wj]

@@motomanicevs yo buddy. Make it soon....

[@biluroy4455]

Bhi usneto 1.5 kw motor se 100 ki speed achive kiya Tha e bike me

[@manishsaini7271]

@@biluroy4455motor 1500w se 3000w ki h thi isliye 100km/h ki speed mil h

[@digvijaypingale3857]

Hello, you didn't consider differential gear ratio in your wheel to motor torque calculations. It can be (3 - 4.5)

[@jayvekariya1679]

Hello sir, Your information very helpfull for me, But can i use this formula in e-bike calculation for selecting motor and battery?

[@prashantnarali8122]

Sir, Wheel radius comes to 0.5m instead of 0.3m ,so rpm changes to 318.8 from 527 then torque value changes to 270 Nm aprox not 166Nm

[@sagu28808546]

Now we can our fav 90s car and convert to ev..

[@abdulwasay7001]

Hello nice too watch your video, i have an inquiry about the power required to run your tata Nano. According to your calculation the required power to achieve 60km/h is 9.2Kw and you used 3Kw BLDC motor in your project. What is the reason behind this? can you please explain. Appreciate your work

[@motomanicevs]

9.2kw is the peak power requirement including rolling Resistance + air resistance + gradient resistance. In normal running only rolling + air resistance + nano weight reduction will be applicable so power requirement reduced. From power we have calculate the torque requirement. I am increasing the torque by increasing transmission ration. 3kw is the motor rated power but peak power is higher of that. ..

[@abdulwasay7001]

yes if we combine rolling and air resistance than according to your calculations it’s still 6-7KW and this power must be required to run the vehicle at this speed and i am now considering that this motor must have the peak power of 6-7Kw . Thank you for the prompt answer really love to learn from your videos

[@anmolmodi877]

How can I contact you, need to discuss

[@motomanicevs]

You can WhatsApp me 7648940132..

[@anmolmodi877]

@@motomanicevs ok

[@Teckbhan]

Sab thik hai par govt approved ka kya

[@mohammadslameh5103]

Thank you My electric vehicle will travel 50 km , how can i calculate the total energy consumption ?

[@motomanicevs]

Yes if you have DC clamp meter than you can get the average current taken by motor and that p=vi.

[@Alex-rn8mh]

hi or you can theoretically calculate it. Take motor power needed to run the 700 kg car @ 60km/h, say 10kWh like in calculation video. That means that you consume 10kWh energy of power for 1h to move the car. That is 10KWh. In this time you drive a distance of 60km @ speed of 60km/h. So you use this 10kWh worth of energy for 60km which means that your car is consuming 10kWh/60km just about 0.16kWh per each kilometer you travel. One you calculate what is your energy consumption at a given speed, in this case 0.16kWh/km @ speed of 60km/h than you multiply by the distance you consider to travel and that is total energy consumption for the travel, so 50km x 0.16kWh / km equals a total energy consumption of 8.33 kWh for this travel. Now add 20% on top of this (because you can only use on 80% of the battery capacity considering Li-Ion chemistry batteries) and you can dimension the capacity of you battery needed to make the travel . So 8.33 kWh x 1.2 = 10 kWh minimum capacity of the battery that you need to install in the car and charge to be able to make the journey of 50km. Hope it helps. Good luck!

[@pravindahiya719]

Good wishes for your dream project. Where are you based; which city ?

[@motomanicevs]

Many thanks, in Bhopal..

[@jasbirchaudhary6]

सर हमे भी ev convertion का एड्रेस देदो मेरे पास भी tata nano है

[@Mayurkalke]

Muje electric car company banane aapki help chahiye

[@motomanicevs]

Please Whatsapp me on 7648940132

[@ravikulkarni7719]

Sir, I think there is mistake in calculation. As 12" is the Diameter of wheel in inches then radius of wheel will be 6" equals to 0.15m and the whole calculated values will be half. please check another point is you have compared the power with net tractive force but it should be tractive force * wheel radius .

[@motomanicevs]

Dear sir thanks for reply let's calculate in detail.. Nano tyre 135/70 R12 Rim dia 12 x 25.4=305mm Tyre height 135x70% x2 = 200mm Total dia = 505. r = 252 or round off 0.3mtr..

[@devendranagadwala7286]

Ye kit milegi kha Plz contect nuber

[@tejassankpal5574]

Sir, jaldi se next video upload kijiye

[@motomanicevs]

Definitely..

[@prashanthkunati6418]

12 inch is the diameter of the rim and not radius and actual tyre radius is 21.74cms. please recalculate based on this. Nano rear tyre size is R12 155/65

[@AdityaKochar1005]

What about differential gear reduction You didn't take this in account

[@amrutpatil7270]

बँगगुड पर अॉरडर करने के लिए परमनंट अकाउंट नंबर कया होता है

[@mohamedjameen175]

Passenger seat capacity is 4... But u have taken 1 person weight 70kg

[@motomanicevs]

Because I am going to use for my own so I have calculate for single person weight. You can increase the weight as per your requirement...

[@manjeetbeniwal702]

Air density half liya complete formule me=0.6 ,,,,, seperate formule for air drag torque & power value is given 1.2 air density

[@manjeetbeniwal702]

Please clear this,,,, gradibility formula of power, value of velocity is taken 1 ASCAP of 16.7 ,why

[@motomanicevs]

1.2/2 = 0.6 Air density..

[@motomanicevs]

It's liner velocity..

[@ajithkannan8743]

Your formula for 'power' was wrong I guess as it is not balanced based on unit comparison. I think its (mgv sin10) instead of (mg sin10)

[@motomanicevs]

Pls send video completely. We both are right..

[@vinaynigam4909]

Yes, it should be mgv.Sin10

[@motomanicevs]

@@vinaynigam4909 for force it's mg sin10 and for power mgv sin10.. Formula is completely correct..

[@random-xj8ej]

Wheel ka radius 6 inch hota hain 12 inch toh diameter hota hain

[@dsbupadrasta2385]

i appreciate this video but most of the cars use single speed transmission. 🙂

[@bibhasjana6040]

Efficiency has no relation with torque.

[@motomanicevs]

Normally you will get higher efficiency at higher torque... Pls refer efficiency torque curve of engine or motor...

[@bibhasjana6040]

I mean efficiency of gear box does not effects torque as you calculated.

[@motomanicevs]

@@bibhasjana6040 definitely it will afect..

[@avidtostudy6552]

why the title is in English whereas the video is not in English nor subtitle in English unfortunately this useless for me

[@tejaswkumar1944]

You have made a lot of minor mistakes w

[@posabalanjaneyulu1176]

Very good explanation. Keep on moving

[@motomanicevs]

Many thanks...

[@uniqueautomationelectronic5696]

Thanks sir

[@motomanicevs]

Thanks...