ando said:Well I can speak from experience as a long term owner of an 810 Dunstall.
The Dunstall cam is original and is still in good condition, or it was at the last rebuild. I have memories of Honda camshafts, particularly the smaller engine Hondas wearing the lobes off the cam at very low mileages.
Ando
I went to his shop sale at Dunstall Well Hall Road before he shut down, and in there was at least 2 full race cams that looked as if the lobes were not hardened- the amount of wear on those lobes had to be seen to believe. There was also a full Norton full race cam where the high lobes were acquired by grinding a flat every 5 degrees, not done on any cam grinding machine at all :!: :shock:

All these were for sale at £30.
The street came that I purchased in the post from Paul Dunstall has the lobes out 5, 6 , and 11 degrees, only one was correct when I finally got round to checking with a degree disc, this cam was effetely making my bike SLOWER :!:

Normal service was resumed when I replaced with the SS Norton that I originally came with the bike –mini wheelies from the traffic light Grand Prix as well as accelerating better

Sorry, but in my opinion a lot of this stuff is JUNK :!: