Re: Unstable bike or unstable rider - you decide!! UPDATED Q
good stuff, thanks.
The headset is one i have not seen before a Tange which appears to have a plastic cover. Everything is smooth running and does not appear to have any problems but i am wondering about removing the plastic parts - they are knurled but totally unmarked and my efforts could just mean a new headset would be required.
Re damage etc - i have checked it thoroughly and all appears good.
I have not measured the stem yet but a guess would be 30mm and undoing the bolt might be awkward as an Allen key may be too long to get at the bolt.
Thanks,
Richard