Yamaha R1 7075 alloy front wheel spindles
Then i made a couple of 7075 alloy front spindles for an R1. I got the fatigue and tensile test results back – they stood up to 600kg loading over half a million cycles without any sign of cracking of fracturing and then broke the machine at 70 tons during the tensile test! They are still in one piece! I suspect they are strong enough for the use they are intended! (solo use only, no pillion, no camping gear!)
So here’s a couple i made following the test results, they are currently bound for the US
The originals have a tiny little socket cap in the fat end making them far heavier than they need to be, so i put 19mm A/F socket in, it means the fat end can be bored 19mm all the way to within 6mm of the step down, they hardly weigh anything!