Front wheel lock-up

[Champs]

The road was a good open clean flat surface with only a slight curve, so no surface interaction seems to be an influence.

Tex - your brake lever suggestion is definitely one to consider and I will ask the question. His main driver is to understand the "how" cause it is eating him up - haha. I would tell him he should have just been riding a real bike, but he has had so many in riding and racing it wouldn't work on him!!

Thanks all for your thoughts - I will continue to put them to him as thought fodder.