NICE to see someone making a good kit other than the Azusa
Being based on the old American Express is even better, IMO, as I really like that design.
Two areas I've found that could use improvement on the Amex from running and modding the two my boys have is
1) Mounting a Predator engine to the Amex.
The relationship of the seat back angle, rear axle position and engine mounting plate location, makes it very difficult to mount a Predator engine and have range of adjustment needed to adjust chain. Especially so if you want / need to swap out rear sprockets for different gearing ratios. I've cut off and rewelded the mount plates twice on both karts trying to find the perfect spot.
It looks like you guys have addressed this somewhat with the longer engine mounting plate and farther rearward location of the rear axle? Were these changes from the Amex design an intentional attempt to address this issue?
Your pic below shows what I'm talking about.
2) The steering support bars are, IMO, too wide on the Amex. Depending on the rider's size and seat position, the driver's legs lay or contact the down tubes at the inner thigh.
IMO, the narrower downtubes on the larger Dingo were better design and would be a marked change to your kit.
In the pic below, look at the karts on the shelf in the background. Both the black and gold karts have the wide spread on the steering support and the orange one in the middle (not an Amex) has much narrower spread.
Eddie's pic below shows the Amex beside the large version of the Dingo, where you can see both styles of steering supports.
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