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Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

05/27/2008 8:14 AM

Has anyone ever used the parts from an electric fork lift to make an electric car? You could remove the car engine and install the electric motor in it's place. You would of course want a car with a standard transmission. Seems like most of the parts one would need would be in the fork lift. A few would have to be fabricated. Do you think this would be a good or bad idea?

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#1

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

05/27/2008 9:49 AM

I think it's a great idea..If I had a workshop and an old fork lift I'd have done it by now...
Your location isn't in your profile. If you are near Harlow UK can I play too?

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#2

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric

05/27/2008 10:40 AM

I used the parts from an electric boat winch to make a forklift once.

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#3

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

05/27/2008 11:22 AM

Because the motor on a electric lift truck was designed for torque and not speed you may want to gear the speed up a bit. Most only turn at 2000 to 2600 RPM. May want to look at re-gearing the transmission for an increase output RPM more than 1:1. Also while your scraping out the old lift truck don't forget the speed controls and the directional controls. While the the old contactors may be problematic in they as they wear pit and some times stick will get you by until you get the bugs out. Curtis makes a good solid-state controller.

http://www.fsip.biz This company can provide circuit repair to controls if needed. Has available service info on the many different control boards manufacture in the USA. Been away from Electromotive Vehicles for a while do not Know what else they offer now.

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#4

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

05/27/2008 12:15 PM

I'm particularly excited by this idea, but only if you can somehow retain the forks in the new car design.

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#5

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

05/27/2008 10:44 PM

I guess weight will be an issue because the forklift uses the batteries as counterweight for loads, so you will not have a lightweight electric car

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#6

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric

05/28/2008 12:11 AM

I have had a long, hard look at doing this, cos I have a good friend who works as a forklift mechanic, and we are planning to build an electric car.

Problems with using forklift motors that we have seen are that they are very heavy and are clearly biased toward torque production and so are a bit limited speed-wise. They also seem to be mostly lower-voltage (36-72V seems common), and take correspondingly high currents to produce the power. I have an example in my garage at home : it is a 36V motor that takes a maximum of 299A for a max power of just over 10KW, and it weighs in at around 35Kg.

We abandoned thoughts of using a forklift motor when we spotted the Advanced DC motors that appear to be made for use in electric cars (www.evparts.com). They run on higher voltages (120V, 144V), the weight and size are less for any given power rating. Field reports for these motors say that they have quite enough torque, and they spin out to 5000 rpm or so.

Forklift batteries have excellent capacities, but the size and weight are a bit off-putting. Deep-cycle batteries of 12V, 80-120Ah capacity have been successfully used in electric cars. One that I am familiar with has 12 x Hella 80Ah deep cycle batteries, driving an ADC 9-inch motor via a Curtis controller. These batteries deliver about 80KM of range between recharges in a mid-sized sedan. Clearly, there are benefits to going to NiMH or Lithium-Ion batteries in that for the same weight you will get considerably more range, but you pockets need to be very deep to go this way.

Best of luck with your project.

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#8
In reply to #6

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric

05/28/2008 1:18 AM

http://4qdtec.com this site also got Schematics and controllers for the application. Very low price compared to Curtis. Good luck for all those tying to build one!

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#12
In reply to #6

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric

05/28/2008 9:26 AM

12x hella...sounds like gavin! Those batteries sound very good but unfortunately are made in NZ and not sold anywhere else.

Anyone curious about the nitty gritty of converting, check out "Gav's EV Conversion" on youtube...a 20 part documentary of a guy that started out the project not knowing anything about cars.

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#7

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

05/28/2008 12:19 AM

Renew ( an Australian magazine, technology for a sustainable future)issue 101,Oct 07, has an excellent article on converting a car to electric power.

It also gives these sites to look at www.aeva.asn.au

controllers etc www.bylongwind.com.au

www.evmotors.com.au, www.wattashock.com www.acpropulsion.com www.cafeelectric.com www.electroauto.com www.evparts.com www.thunder-sky.com

Go do it.

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#9

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

05/28/2008 5:23 AM

If you are looking for 3 phase ac motors with a low supply voltage (80 -150 VAC), I can help you. You can fed these motors by means of a frequency converter. Motors have an position encoder feeding back to the frequency converter. The DC power stage of the frequency converter has to be supplied with a battery bank.

Torque controle or speed controle is possible by the frequency converter. Active breaking is also possible.

The only problem will be the weight of the battery bank...

Good luck with the project

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#10

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

05/28/2008 5:40 AM

No but Im busy with the plans from run your car from water (Hydrogen) or supplement the petrol with Hydrogen gas, apparently more than 50% better mileage !!!

Someone left a full version of zipped plans to down load at

http://www.spiritofmaat.com/archive/feb2/carplans.htm

Looks fine to me

Battery's are expensive and take a long time to charge is the only problem for me re battery powered products.

I use Battery packs for Underwater video lighting / metal hydride and Lithium ion are great for holding peak power but they don't last long and if one dies you then technically need to replace the whole lot because they are not the same anymore etc. I use Lead acid 7 or 15 amp/hr which are usually used for alarm systems and starting generators. They work fine and are a 1/4 of the price. Amortise the cost of replacing 10 Deep cycle batteries every year - may as well stay on petrol.

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#11

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

05/28/2008 9:23 AM

GREAT IDEA!

I'm currently converting my old eagle talon to electric to commute to work...electricity in Quebec Canada is soooo cheap at ~$0.04/kwh and gas sooooo expensive at $1.44/L yesterday (about $5.75/Gal) it just seems to be a logical thing to do....and a great chance to tinker and learn a thing or two.

My advice is to take a good hard look at your driving requirements first. Just like there are an enormous number of possible combination and results for gas engines (sizes, speeds, torques, efficiencies, polution, gas tank sizes, etc etc) there is a lot of different possibilities for an electric car. Having cheap access to certain new or used parts might be great for the pocketbook but not for the overall performance requirements that you have. Fork lift motors and aircraft starter motors have been used with varying degrees of success. I have decided to just spend $2k and buy a motor that was made for it.

You can do a lot of the work yourself and save money. Many parts just simply need to be purchased and there isn't much you can do but shop around a bit. Here is a rough of what my budget looks like for a DIY conversion with a DC motor and setup for highway speeds:

  • 'glider' car (dead engine) - $400. This is a good place to start as the typical saftey requirements for road worthiness are already there: seatbelts, brakes, steering, lights, etc etc
  • Motor - $1700-2000. I need one with a wee bit more torque as the eagle talon isn't geo metro
  • tranny to motor adapter - $800 will get you the best of the best, preserving the clutch, the best shaft coupling available and all quality machined parts
  • Controller - $1000-2000 for a typical car.
  • Batteries...$2500-20000 for a 144V pack to do highway speeds. I'd say this is easily the hardest purchase as there are so many possibilities it's hard to know exactly what kind of overall performance you'll get.
    • lead acid...the cheapest. $2500/pack. HEAVY. Bulky. Great for non stop/go driving in a vehicle with a strong frame (i.e. 1/4 ton to 1/2 ton pickup truck). Short lift but cheap to replace. Must be maintained manually by topping up the water...can leak...especially in a crash.
    • AGM...$4500/pack Safer and lighter than lead but have a shorter life unless carefully managed. Equally bulky. pretty good if you do short commutes and overall safety and low/no mainenance is the priority. Don't leak.
    • NiMh...currently not on the market to anyone but OEMs. Great batteries though for weight and range. If you are going to go with or support EVs then please don't buy GM vehicles or gas from Chevron/Texaco. They are the owners/controlelrs of this technology and pulled it from the market and took other manufacturers to court to shut them down. GM then pretends to make a car (the volt) and gives excuses about battery technology not being available. I kinda hope that Delphi goes on strike so GM runs out of cash at about the time the only 'real' interest is in EVs and they'll come back to market with these batteries before they're completely obsolete. For more info watch "who killed the electric car"
    • Lithium. Several kinds...not all are equal. Newer kinds are more stable than the ones you hear about turning laptops into fondue burners. LiFePO4 is the latest and seems to do well. Twice the cost of AGM...but a 100km range will weight in at about 300-400 pounds compared with the 700 to 1500lbs needed to do the same with AGM and the 2000lbs of lead acid. They have a much longer life so with a battery managment system they can outlast the car. I'm looking at about $10k while buying in a group order to get a reduce price on the cells...normally would cost $15k-20k.

A conversion can be very simple by buying a prefabbed kit for a specific vehicle like the Chevy S-10, Geo Metro, VW rabbit (old model) or Porsch 914. Numerous places offer already converted cars if you just want to purchase one and drive away, avoiding the tinkering (...sounds almost boring...the path of least resistance for the rich environmental yuppies out there). A raw conversion from preacquired non-ev parts is possible but requires at the very least some good garage space, a welder & ability to use it, an understanding wife...(love you dear!)

Take a look at www.evalbum.com to see many examples of conversions. From there you'll find links to many personal conversion websites documenting what they did, why and for how much $$$.

As a 'just for fun' experiment...why not?

I've just started mine and am documenting it at eagletalonev.blogspot.com

Have fun!

[edit] I neglected to say that AC motors can be used in conversions and some are made specifically for EV use. Check out metricmind.com for more info on going this route. More expensive but you get perks like regeneration and motors that are better adapted for 'real' automotive use (i.e. sealed, water cooled, no brush maintenance to speak of, higher speed range...) If I decide to make a purpose built ev for commuting I'm going to go with an ac drive in a chassis like the XR3 from rqriley.com... [/edit]

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#13

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric

05/29/2008 4:14 PM

This is a good one. Too bad your forklift parts are not DOT certified and you can be arrested for circumventing Federal fuel taxes, if you own a commercial trucking company.

At Disney there are semi-retired GM autoworkers, constantly repairing the electric cars at the GM sponsored, car of the future.

After speaking with the technicians, they insist the maintainability of any such vehicle is prohibitive. The stators constantly wear out, the beryllium copper gets really expensive and the dust is utter hell on the environment, (let alone the repairman). They were averaging 2-3 days use, per car, before hours of costly rebuilding. About the same MTBF as bumper-cars, at the fair.

Moving to electric vehicles was Luka$' dream. Unfortunately, the wires were not long enough, to make it, to work.

Range Rover has miraculously solved all our electric automobile problems.

Now you can use a Range Rover to build an electric car, instead of a fork-lift!

http://www.autoblog.com/2008/05/23/british-company-building-electric-range-extended-rovers/

Here's why it won't work:

http://www.jumbojoke.com/lucas_electric_465.html

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#14
In reply to #13

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric

05/30/2008 7:06 AM

[quote] you can be arrested for circumventing Federal fuel taxes [/quote]

I heard that enough people are converting in Virginia that you have to pay an extra $50/year on your restration to amke up for the lost gas tax revenue. If this is true then it's a lot better deal than up here in Canada where gas just about hit $6/gal a couple days ago and 50%(ish) of that is taxes...will the gov't do anything to help??? Better not bet your life on it...or the life of the planet.

I'm no tree-hugger but there are other options out there with a lot of potential. The development of these ideas will only happen when there is sufficient interest to make a market.

[quote]After speaking with the technicians, they insist the maintainability of any such vehicle is prohibitive. The stators constantly wear out, the beryllium copper gets really expensive and the dust is utter hell on the environment, (let alone the repairman). They were averaging 2-3 days use, per car, before hours of costly rebuilding. About the same MTBF as bumper-cars, at the fair.[/quote]

Sounds like they picked some REALLY bad motors. There are industrial motors plenty strong enough to drive a car around that will definitely NOT wear out every few days...

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#15

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

05/30/2008 5:11 PM

typically forklift batteries, while heavy are well made & long lasting. If you got those and the motor and all the controls, all you need is a donor car or truck. Sure you'll have to put a study on the gearing. You'll be all the smarter after this project. I agree: go to evalbum and search and study.

i can't answer to all the legalities. Like a firearm, do i really have one? How come gold prospectors never find any gold? etc. etc.

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#16
In reply to #15

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric

06/17/2008 11:24 PM

I just came by to check... how is your project going?

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#17

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric

06/17/2008 11:26 PM

I just found a very interesting Blog Showing how to convert a car into an EV . It shows videos and its fun to watch ...

http://www.kiwiev.com/

Enjoy

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#18

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

06/19/2008 6:22 PM

Thanks for all of the responds on this post. Since posting this I have come across a Clark fork lift that I can buy for a song. It is a 36 volt system.The batteries are weak and the hydraulics leak. I have decided that it would take to much time and effort for me to try a conversion. If any one is interested in parts off of it let me know. I may be able to work a deal out with the owner. I am located in Southeast MO 100 miles south of St. Louis. Thanks.

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#19
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Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

06/20/2008 9:07 AM

If only I was closer ... and had a workshop... and .

Don't spose it would fit in a Jiffy bag...nah.

Del

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#20

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

06/25/2008 3:00 AM

I remember reading an article on a drag bike that used a 32v forklift motor to drive it. They used (from memory) 2 x 120V NiCd battery banks, paralleled on launch and then series for 240V running .. so no current control at all, they had to use the clutch because it snapped dual 930 chains not surprisingly.

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#21
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Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

06/25/2008 3:02 AM

Nice...

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#22

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric

07/21/2008 4:04 AM

i attended, and joined the VANCOUVER ELECTRIC VEHICLE ASSOC. and a guy had a forklift motor in a Japanese motorcycle. i will try to find the picture and specs and post before i go on holidays. it was an excellent fit. can't remember the battery/driver config. http://www.veva.bc.ca/home/

if i make it to the next meeting i will ask for specs again.

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#23
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Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric

07/21/2008 3:58 PM

That's Robyn! http://www.evalbum.com/1497 Not a forklift motor...a special one for high performance golf carts. Not a bad looking golf cart he has there! ;)

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#24

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric

07/22/2008 1:24 PM

your right. I got the vehicles/ motors /drivers mixed up.

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#25

Re: Has Anyone Ever Used the Parts from a Electric Fork Lift to Make an Electric Car

11/06/2010 2:12 PM

the electrique engines,and motors on underground mining machines are heavy duty...mules and lokies pull thousands of tons of material all shiftlong. plug it into the charging station, for next shift. change the battery pak for the next shift, away ya go.

i think the only draw-back holding is the mass of the batteries and safty of what happens if...there is spilled contamination

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