My 4 year old sons first car - the swing bin racer.

My 4 year old sons first car - the swing bin racer.

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bertelli_1

Original Poster:

2,237 posts

210 months

Friday 24th June 2011
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After reading this ph thread I decided to order the plans to make my own race car. For my son, you understand. The idea of using a bin as the basis for a go kart sounds a bit crap but the finished article is actually quite nice looking, like a Lotus 7. The plans come with decent instructions, a cd guide, parts order list and full size paper plans. You can buy a ready built kart from the company but I'm pretty handy (my Golf & Porsche projects have already featured in readers cars) and I knew from the instructions there would be some stuff I'd want to upgrade.

It now has rose jointed steering, a larger capacity battery (plus optional on board spare), reverse gear (operated by a toggle switch on the dash), a speedo and steel uprights. Power is provided by a cordless drill - £1.04, the batteries were £9 for both, the steering wheel is for a wii & cost £3.50. The wheels were rather expensive at £35. Here's a few pics -









It still needs a paint job (we have chosen Bugatti blue) but the boy - and me - is keen to give it a testdrive. I'm already thinking it needs more power but this is supposed to be a budget toy so as long as it can get up a reasonable incline I'll leave it. For now....




bertelli_1

Original Poster:

2,237 posts

210 months

Friday 24th June 2011
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Ebay. A cordless drill with knackered batteries is worthless.

bertelli_1

Original Poster:

2,237 posts

210 months

Friday 24th June 2011
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The rear axle is mounted on two threaded rods so you can adjust the axle forwards and backwards.

bertelli_1

Original Poster:

2,237 posts

210 months

Saturday 25th June 2011
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Thanks for all the nice comments guys. I'm sure the boy will be beside himself later when we take it out. I'll try and get a video. The top speed, according to my maths, wiil be around 3.6mph. Which will probably still hurt in the ankles. For those interested in buying/building one - a fully built kart costs £300 from lightning, I've spent around £150, the cost really depends on what you have lying around in the garage. I've added another pic for the technical peeps, showing the boot area and the relays used to reverse the motor polarity.




bertelli_1

Original Poster:

2,237 posts

210 months

Saturday 25th June 2011
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A little video of today - http://youtu.be/EiaRrtoYSFI

bertelli_1

Original Poster:

2,237 posts

210 months

Saturday 25th June 2011
quotequote all
Unfortunately as hes my son i have to offer a no quibble lifetime warranty. The toe is adjustable. It just looks wrong in the pics. Ive set it with a little toe in for high speed stability.

bertelli_1

Original Poster:

2,237 posts

210 months

Sunday 26th June 2011
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OlberJ said:
MadRob6 said:
And I thought your 944 project was awesome.
Link?
here

Edited by bertelli_1 on Sunday 26th June 10:16

bertelli_1

Original Poster:

2,237 posts

210 months

Sunday 26th June 2011
quotequote all
Monster26 said:
That is awesome, well done Dad. But you realise that anything that breaks or needs to be made from this day forward will be down to you. Thats exactly whats happened to my poor dad.
Well so far hes managed to break the steering twice. a blob of weld and some loctite 648 seem to have cured the failures - plus i've told him to be a bit more gentle. i also need to roughen up the drill chuck (I may try putting some grooves in it with the angle grinder) as it sometimes slips on the tyre, im worried if i adjust it any further it'll damage the bearings.

Here's a pic of the steering - very basic, and the throttle.



bertelli_1

Original Poster:

2,237 posts

210 months

Sunday 26th June 2011
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There are no electric instructions with the plans, I used a couple of switching relays for forwards/reverse. At some point I'll post up the wiring diagram although a google search will probably find a similar setup.

bertelli_1

Original Poster:

2,237 posts

210 months

Saturday 10th March 2012
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Update:

The gokart is still going strong & working well despite the abuse it gets! My boy always wanted it blue so its been stripped down, painted in what I call 'Bugatti blue' and had a few mods to beef things up. It has a working speedo now (does around 5mph) courtesy of a bicyle computer and some basic mudguards to stop little fingers getting trapped. There are still some things on the to do list like lights and a horn but its more important to get some fun out of it while we can. Anyway, some updated pics -




bertelli_1

Original Poster:

2,237 posts

210 months

Saturday 17th March 2012
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Iain XR4i said:
I think I love that car nearly as much as your lad does.

I built a Mayfair for my son (he's 24 now), but added a windscreen, and a few other bits.

The spec for that car used a Cortina wiper rack for the steering, and a wiper motor for the power - really ingenious because the fast and slow speeds rotate in different directions - slow = reverse, fast = forward.

Only sold it on a few years ago, and the buyer stripped it for the mechanical parts to use in his own scratch-built mini land rover.

Edited to clarify the opening sentence. Reading back the original, it worried me in case it was misconstrued!

Edited by Iain XR4i on Sunday 11th March 01:10
It did sound a little pdf file! That mayfair is a heavy bit of kit! The lightning weighs around 20kg I suspect.

bertelli_1

Original Poster:

2,237 posts

210 months

Friday 6th April 2012
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Many thanks for all the adoption applications I've received to far.

LarJammer

Original Poster:

2,237 posts

210 months

Friday 17th October 2014
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i will try and remember to post some 'technical' details later. (the user formally known as bertelli).

LarJammer

Original Poster:

2,237 posts

210 months

Tuesday 16th May 2017
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Actus Reus said:
It lives!

The OP very kindly offered his lad's car to a PH dad earlier in the year and I dutifully collected it a couple of months ago. The weather's better now and my lad just about old enough to drive it, so it got a fresh coat of paint at the weekend and a quick shakedown. The steering wheel broke, but that should be fixed soon enough (you can just about make out the bodge in the picture below). All it needs now is an orange stripe down the middle, and perhaps around the end of the nose itself BRM style.

These are wonderful things and my lad loves it - if you have the skill to build one I absolutely recommend that you do it. Many, many thanks to the OP for his generosity.



(and yes, I need to sort the lawn out - been too busy messing about with cars!)
Its good to see you are enjoying it!

LarJammer

Original Poster:

2,237 posts

210 months

Tuesday 16th May 2017
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NiceCupOfTea said:
Folks, do these have enough grunt to pull themselves around over a bumpy lawn, or are they strictly smooth surfaces? I'd really like to build one for my 4 year old daughter but she is tall for age so some modifications would need to be in order...
It will be fine on the lawn but they do struggle on wet surfaces. My boy only grew out of it at about age 9.

LarJammer

Original Poster:

2,237 posts

210 months

Monday 12th April 2021
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Free to a 'god' home? I dont think I qualify!