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evilscorp

Barbie cars... Grind hard plumbing co.

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So I watch donut media on youtube which then gets you into other weird places then next minute you end up driving 50miles to buy a broken kids quad and decide your strimmer no longer needs a place in your shed.

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Kids quad minus an engine as it broke, fortunately I got some parts of it like the gearbox and exhaust and they fit my strimmer... hopefully.

The quad had a 40cc engine and the ebay strimmer is 50cc? So no replacement for displacement? lol (no doubt this will increase to a motorbike engine after trials).

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So if you have youtubed barbie car you might see where this is going and why the frame is getting stripped.

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The engine will be going here at the front, the brackets that are already there will help for mounting points.

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The rear is the problem.

The drive sprocket is in the middle and the chain will be where my ass is going so I need to shift it to the right. Hopefully I can weld a flange onto the shiny driveshaft and simply unbolt the sprocket and move it over so the chain runs down the side.

Next issue is the rear suspension needs to go so the chain stays taught and drifts happen =) Not sure what way I will do this yet and I will have to reinforce the chassis front to back as the old seating location (everything behind the steering column is getting cut off to make way for a kart seat.)

The feet rests will be unbolted and I might try to use that steel pipe for adding width to the chassis.

 

I just missed out on a kids two seater pink porsche on ebay that would have been ideal so I will need to wait for something else to come up. (don't want to spend money, needs to be pink and big enough for me and the chassis to fit in, probably 1m long but need to measure.)

 

Love this sh@*t

 

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Erm very random, is your way to avoid congestion charges or build a cool ride on mower with attitude!:lol:

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Red will be welded and blue will be a length of pipe welded in place.

White will be removed.

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Never really dealt with chains before so not sure how easy this will be to get a larger section installed, it came apart ok. Might end up using push bike chain and sprockets.

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As if you didn’t have enough projects on the go.... :lol: 

 

Make sure you bring this one to a meet

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That chain doesnt look very strong, would using a motorbike chain be better? Wouldnt want it to snap. Looking forward to seeing how this project progresses!

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On 10/09/2019 at 16:55, rabbitstew said:

That chain doesnt look very strong, would using a motorbike chain be better? Wouldnt want it to snap. Looking forward to seeing how this project progresses!

I think it is a motorbike chain, probably 2 or 3x as big as a push bike.

 

Cut the chassis today and decided to change my mind on rear suspension.

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Going to use the shock (if I can) so I needed to move the tie in point further back so I can have space for a seat.

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Just need to weld it into place once I am happy.

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Obviously it will be going on straight just rough mock up.

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Thought I was gonna be super lucky today but only half came through.

The extra long bolts I need for the gearbox were the same size as my spare cosworth plenum bolts but sadly just a bit too long.

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But the main good news is that it was only needing a new spark plug to get the engine to work again (new carb went on anyway but is a smaller inlet so I might swap the old one back.) 

I used the spare spark plug from the box of parts I was given with the quad and it runs fine, just need to adjust the idle .71184580_10162354134510441_6276180691113

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Love it, watching with a big smile on my face.:clap:

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Anyone with bike experience know if the preload on these springs can be adjusted? Looks like they are at the lowest setting and it seems I am too fat for kids quad bike shocks (when mounted incorrectly). It should only need tightening up a small bit as it nearly takes my weight, otherwise its solid mounted rear suspension.

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I might need to make guards or somewhere for my feet lol. The drive chain will dictate how high I can have them positioned.69762749_10162354772740441_2338031031728

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Not sure if my spring compressors will fit in the gap otherwise i would use them and just turn by hand. Needs some small c spanner or something.

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The motorbike chains I use dont have that circlip, they use rivets to attach the spare link so bit stronger, but you might be okay. Just make sure you fabricate some sort of chain guard to be on the safe side! :thumbs: Be good if you could fabricate something on the rear axle to take a motorbike sprocket, then you would have easy gearing adjustment to whatever you wanted.

 

That shock you can adjust the preload using  C spanner and turning the bottom bit around. Like you say, it looks like its on the lowest setting atm. Sometimes you can use a big screw driver and a hammer to knock that bottom bit around.

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Thanks for the tip rabbitstew, my spring compressors dont fit so I will try that method.

 

Took the old sprocket off so I can gauge how I am going to mount it.

It's going to be tricky to mount it central if i weld a plate to the rear drive bar.

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This is a rough mock up of how i might have it all setup. Not a fan of the exhaust pointing at me but hopefully i can heat and bend the exhaust that I was given to point down the side of the car where the chain drive is so I know which way to exit in case of emergency lol.

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Made the mounts but need more as the thing likes to shake bolts loose lol.

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The exhaust might need to be re routed as it might get in the way lol.

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But what a difference it makes, much quieter, now all I need to do is figure out how to set the idle speed.

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I am undecided if I should make a middle jack shaft to keep the oem sprocket location on the back and use two shorter chains for less issues with tension or if I should just use an extra long one and try welding a plate on the rear driveshaft for the sprocket to be side mounted.

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