It may be just me but....
I can't get what you mean. AlanRR seems to think you are saying the powder coat around the carriers is too thick.... that's not what you have actually written.
Did you actually mean, 'the thickness of the metal carriers is deeper than the bolts I have for bolting (set screwing) them to the chassis'?
If so.... simply get longer bolts/set-screws.
If that's not what you meant, please clarify.
Giving advice is what many of us enjoy but it really helps if you can explain what you mean as accurately, and fully, as you can as there is a huge amount of ambiguity about karting.
You are right, a cadet chassis will not fit any normal sized man.... there are some seriously small brilliant adult karters but... not many of us fit that description. The Cadet engine (I assume it's a Comer) won't have the power to give you much fun anyway, as an adult. It will be plenty quick enough for most youngsters.
Make life easier for us: publish a picture of what you have on one of the free image hosting sites, publish that 'address' on here and some will go and look at the pictures and give you advice as to what it is.
Building a chassis into a kart is actually (often) quite an expensive route. It's like building a car from spares: it usually comes out at about 10 times the price of the whole car as there is a HUGE 'mark up' on spare parts. Second hand, aged karts are surprisingly cheap and you'll get a complete kart, often with spares, with engine that should at least work together.
Here are some examples on ebay at this moment:-
http://www.ebay.co.uk/itm/Go-kart-subaru-pro-kart-EX21-engines-/231385319469?pt=UK_Cars_Parts_Vehicles_Other_Vehicle_Parts_Accessories_ET&hash=item35dfa3c82d http://www.ebay.co.uk/itm/Go-kart-subaru-pro-kart-EX21-engines-/231385319469?pt=UK_Cars_Parts_Vehicles_Other_Vehicle_Parts_Accessories_ET&hash=item35dfa3c82d http://www.ebay.co.uk/itm/Go-kart-subaru-pro-kart-EX21-engines-/231385319469?pt=UK_Cars_Parts_Vehicles_Other_Vehicle_Parts_Accessories_ET&hash=item35dfa3c82d
http://www.ebay.co.uk/itm/2008-INTREPID-GO-KART-CHASSIS-TKM-/261660822980?pt=UK_Cars_Parts_Vehicles_Other_Vehicle_Parts_Accessories_ET&hash=item3cec334dc4
(oddly enough, that's an Intrepid)
http://www.ebay.co.uk/itm/Wright-Pro-Garda-7-Honda-Cadet-Kart-Project-one-Freshly-Rebuilt-RPM-SP-Engine-/281495516638?pt=UK_Cars_Parts_Vehicles_Other_Vehicle_Parts_Accessories_ET&hash=item418a70b5de
All these are (currently) below 250. Obviously, I cannot know is any are any good without seeing them.
If your kids are young, with a twin engine Honda kart(called a ProKart), you can simply run them with only one engine 'started' for their first attempts, starting the second motor as and when they are ready. With two engines (and the seat adjusted) you could drive the kart.
Remember, just a bare rear axle (for example) cost around £100 on Ebay: spares are expensive: whole karts are usually a VERY cheap way of getting started.
Do NOT be tempted to fit a 'proper' adult engine (i.e., a 100cc two stroke or a 125cc two stroke) for their first attempt...... it will be VASTLY too powerful for their first attempt!
Ian
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