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Jul 14, 2021 19:25:45 GMT
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Some of you may remember the gokart chassis I bought a while ago.
Barstool racer is the objective
Not shortened as is traditional but full length with a small pickup bed over the motor.
So how many horses should I look for in a motor.
No need to be a rip snorting turbo NOS driven nutter mobile.
But needs to be reasonably capable of drawing around 150kg around a field.
I see Briggs and Stratton motors on rotovators with 3.5 hp and bigger on other stuff.
Go on…….
Don’t kill me.
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braaap
Posted a lot
Posts: 2,569
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Jul 14, 2021 19:33:31 GMT
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Your project suggests that You will be taking care of that Yourself!
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Jul 14, 2021 19:35:00 GMT
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All of it please. Look for a scrap ride on mower and remove the engine.
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Jul 14, 2021 20:25:43 GMT
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The obvious answer is all of the horsepowers.
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LowStandards
Club Retro Rides Member
Bigging Up The Sum Sum Man Since '99
Posts: 2,620
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Any horsepowers will work with the correct gearing
You can get a 75cc suffolk punch engine with the mower attached readily on fb marketplace for £30. You'll only be doing 15mph mind, depends on how much you do want to damage yourself.
The Mobility scooter I built was 13.5hp, geared to do a smidge under 40mph and that had the power to lift the front end easily.
I reckon the safe bet would be a gx160. Or if you have £200 knocking about, get a turnkey pitbike engine. Should be able to get a 110cc complete new engine for that sort of price. Then you have it all, gears, power, all that jazz. Saves faffing with centrifugal clutches, jackshafts, gear ratios etc
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I think the correct answer is look at the CarsandCameras youtube channel for the motors they have fitted to their garden toys.
My vote is about 100hp for S&G. You don't have to use all of it.
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Last Edit: Jul 15, 2021 8:08:09 GMT by Soopahfly
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Kron
Part of things
Posts: 260
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could you use the engine from the scooter you are giving away?
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So this one is out, then...
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could you use the engine from the scooter you are giving away? Scooter gone. Not what I wanted.
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I've got a Honda GCV520 Engine. It's a 4-stroke Air Cooled V-Twin.
530cc 14HP 36NM
Think that would be ideal without being too much.
Still Attached to a Honda Lawnmower/Mini tractor which I've currently got in bits!
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Specialist Bodyshop & Fabrication Classic, Retro, Prestige & Custom Small Repairs to Concours Restorations Mechanical Work Vintage to Modern
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Paul Y
Posted a lot
Posts: 1,948
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Jul 23, 2021 15:32:30 GMT
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In my corporate entertainment days ( look at me, I’m posh!) we had some off-road karts with 12hp engines They were quick enough to spin wheels without really trying, and would happily throw you off into the scenery if provoked Even my schools karting series ran chainsaw engines, and could reach about 35mph, which is f@@£ing quick when your is 2inches off the deck How dangerous are you feeling? 🤔
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ChrisT
Club Retro Rides Member
Posts: 1,635
Club RR Member Number: 225
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Jul 24, 2021 10:49:30 GMT
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Jul 24, 2021 14:07:41 GMT
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Surely turbo Hyabusa is the only way to go...........
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Needs a bigger hammer mate.......
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Jul 24, 2021 20:54:05 GMT
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It seems I have a Mini Moto to add to this….
Perfect?
No, but fun?
Maybe.
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redratbike
Posted a lot
Posts: 1,473
Member is Online
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when i was thinking about doing something this (building a fat tyred mini bike )
i was advised to use a torque converter to make the most of the available power rather than direct drive
i never did build it but the engine may still be available ..Honda gx390 about 11hp if i remember correctly
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andyborris
Posted a lot
Freedom is just another word for nothing left to lose.
Posts: 2,144
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There is never enough horsepower......just not enough traction.
Carroll Shelby
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Jul 26, 2021 17:57:18 GMT
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It seems I have a Mini Moto to add to this…. Perfect? No, but fun? Maybe. Mini moto clutches are disappointingly short lived on mini motos. But they are cheap and easy to swap. I'd take a leaf out of Colin Furze's book and go for a Chinese Honda C-ped clone. They come in all sort of capacities and power outputs, with or without electric starters in manual or semi-auto. I think he just sets up a short chain drive to a solid go kart axle for minimum fuss.
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