By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by Allendale July 23rd

IC engine tractor conversion query

Can it be done for a decent cost

All Topics | Latest Posts

Search for:  in Thread Title in  
Plasma29/07/2019 16:40:21
331 forum posts
41 photos

Fellow tinkerers.

I have a wheelhorse C125 garden tractor fitted with a Kohler 12hp petrol engine.

Is it possible to ditch this and fit an electric motor and batteries with enough power to drive the thing?

I contacted a motor supplier (used to dealing with industry not a shed engineer) and was quoted over 2k for a motor and 48v lead acid battery system which would still need a controller etc.

In my simple imagination a foot mounted motor with enough grunt and a sufficient battery pack would get things moving, but you folk who power locomotives with electrickery will hopefully provide some technical knowhow to my concept.

It has an 8 speed gearbox and the petrol engine runs at 3500 rpm. I have all the weights and specs if needed.

I think the firm I wrote to thought the motor would be driving the wheels direct rather than through a gearbox.

Thinking caps on please

Plasma.

Tim Chambers29/07/2019 17:12:04
82 forum posts
33 photos

Plenty to see on YouTube https://youtu.be/NMWQxc9Ch2w

This firm are local to me but the website doesn't seem to have changed much recently.

https://www.everything-ev.com/

Edited By Tim Chambers on 29/07/2019 17:17:28

Edited By Tim Chambers on 29/07/2019 17:28:53

Tim Chambers29/07/2019 17:19:16
82 forum posts
33 photos

Edited By Tim Chambers on 29/07/2019 17:20:34

Edited By Tim Chambers on 29/07/2019 17:23:44

Edited By Tim Chambers on 29/07/2019 17:26:51

Trying to embed with mobile is impossible.

 

Edited By Tim Chambers on 29/07/2019 17:27:56

Plasma31/07/2019 12:31:34
331 forum posts
41 photos

Thanks Tim.

Some food for thought there. Plenty to keep me thinking about while I plan things.

I've been offered an electric airport luggage tug, capable of towing 6000kg for the job I have in mind.

Trouble is it's in Buckingham and I'm in Barnsley.

Never organised transport like this so I'm having fun calling haulage firms.

Regards mick

AdrianR31/07/2019 13:47:47
272 forum posts
20 photos

I think the conversion to an electric motor is easy, the hard bit is getting the batteries.

The energy density of batteries is very low compared to fuel and to have a decent run time you need huge batteries. Which if are lead acid are also very heavy.

Your 12HP engine would need to be replaced with a motor would draw 11KW assuming 80% efficiency of the controllers etc. At 48V that would be 229A, so for 1hr at full power you would need about 500AH of battery (lead acid max discharge 50%).

If you want to be green, buy biofuel.

V8Eng31/07/2019 14:39:45
1313 forum posts
27 photos

 

 

Edited By V8Eng on 31/07/2019 14:40:31

pgk pgk31/07/2019 15:36:09
1425 forum posts
278 photos
Posted by Plasma on 31/07/2019 12:31:34:

Thanks Tim.

Some food for thought there. Plenty to keep me thinking about while I plan things.

I've been offered an electric airport luggage tug, capable of towing 6000kg for the job I have in mind.

Trouble is it's in Buckingham and I'm in Barnsley.

Never organised transport like this so I'm having fun calling haulage firms.

Regards mick

I wonder if it'd be better to just use the tug and try to find a way to get a PTO off it?

pgk

stevetee31/07/2019 15:46:44
127 forum posts
13 photos

I think it's fair to remind ourselves that whilst the petrol engine runs at full speed, it doesn't run at full load much of the time.

Tim Chambers31/07/2019 18:55:58
82 forum posts
33 photos
Posted by AdrianR on 31/07/2019 13:47:47:

If you want to be green, buy biofuel.

If you really want to go green ,buy a goat.wink

Philip Burley31/07/2019 19:28:33
121 forum posts
3 photos

Hello , well if you remove the engine , I need a kohler for my Wheel horse , that would go towards the cost of an electric !!!!

regards Ohil

Robert Atkinson 231/07/2019 19:31:01
avatar
344 forum posts
21 photos

Have you actually investigated the size of the motor in the tug? I looked at a baggage tug some years ago for a possible full size electric vehicle project. It was huge and very heavy for it's output. The tug was up for grabs and literally 1/4 of a mile away on the same industrial estate as my work but I still passed on it.

Robert G8RPI.

V8Eng31/07/2019 21:16:59
1313 forum posts
27 photos

Electric ride on mowers and garden tractors seem to be available across the pond some seem to run at 48v, do not know if they are available in the U.K. yet.

More info via these links

Ryobi

TodaysMower

Edited By V8Eng on 31/07/2019 21:35:52

Edited By V8Eng on 31/07/2019 21:44:13

John Olsen01/08/2019 05:43:49
985 forum posts
86 photos
1 articles

Husqvarna do an electric ride on mower, as well as their robotic ones where you don't even need to be there at all. The ride on one is about NZ$7500 which would translate to about 300 to 4000 GBP I guess.

John

Sam Longley 101/08/2019 07:02:47
719 forum posts
26 photos
Posted by AdrianR on 31/07/2019 13:47:47:

I think the conversion to an electric motor is easy, the hard bit is getting the batteries.

The energy density of batteries is very low compared to fuel and to have a decent run time you need huge batteries. Which if are lead acid are also very heavy.

Your 12HP engine would need to be replaced with a motor would draw 11KW assuming 80% efficiency of the controllers etc. At 48V that would be 229A, so for 1hr at full power you would need about 500AH of battery (lead acid max discharge 50%).

If you want to be green, buy biofuel.

Look at golf cart batteries. Designed for a bit more than 50% drop . Come as 6V I believe but H duty

AdrianR01/08/2019 08:43:17
272 forum posts
20 photos

Yeup, the 50% was for deep discharge batteries. Yes you can discharge them more but it drastically reduces their lifetime. 50% is a compromise between capacity and lifetime.

I note that one of those electric lawn mowers has a 3yr warranty and a 1yr limited warranty on the battery. What a confident manufacturer.

RMA01/08/2019 09:23:12
160 forum posts
Posted by Plasma on 31/07/2019 12:31:34:

Thanks Tim.

Some food for thought there. Plenty to keep me thinking about while I plan things.

I've been offered an electric airport luggage tug, capable of towing 6000kg for the job I have in mind.

Trouble is it's in Buckingham and I'm in Barnsley.

Never organised transport like this so I'm having fun calling haulage firms.

Regards mick

See Parcel2Go website and put in what you want moving, and the quotes come rolling in. Saves a lot of time, but give it time for all the quotes to arrive as sometimes the cheaper ones come in last. Good luck.

Plasma02/08/2019 06:36:34
331 forum posts
41 photos

Just an update. The item was listed on ebay, however the seller used three year old photos from a previous sale to advertise it. Something was fishy and the seller lied about the photos so I pulled my bid. Not worth taking a punt and if I had not had the information and advice from you gents I would have bought a 1020kg lemon.

Many thanks plasma

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

Latest Forum Posts
Support Our Partners
Warco
ChesterUK
Ausee.com.au
Advertise With Us
Eccentric July 5 2018
TRANSWAVE Converters
Eccentric Engineering
Meridienne Sept 2019
Allendale Electronics
emcomachinetools
Subscription Offer

Latest "For Sale" Ads
Latest "Wanted" Ads
Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues

Social Media online

'Like' us on Facebook
Follow us on Facebook

Follow us on Twitter
 Twitter Logo

Pin us on Pinterest