I hope that my bit of information will be of help, in 2007 I made a set of head and barrel through bolts ( waisted so as to reduce stress concentration) and sleeve nuts in 316 marine grade stainless and have so far had no problem with them after considerable use. But I agree with the other members ...

Still a bit puzzled! in Peter Hartley's book the Ariel story it says that the WA stamped frames were fitted to VB. VH.and VCH machines in 1951.so that would be a head angle of 64 degrees 2min? I have a WA frame so that would be be the closest to original that I am likely to get to with what I have ...

I have a 1952 VCH engine (TR) but I don't have an O R prefix frame, but I do have an XG world war 2 frame giving greater ground clearance (1 1/2" ?) Shorter wheelbase, the headstock appears to be slightly steeper which would also shorten the wheelbase, my question is are the OR frames the same as or ...

I was recently told by a Morris oils technical representative that we should not use EP oils in gearboxes containing bronze or any yellow metal components, ie selector forks bushes etc, the reason for this is that EP oils contain sulphur up to 20%.the sulphur attacks the surface of these metals ...

are the North and south shaped blocks made of a particular special material such as swedish iron? matt Barton.

Perhaps I could add a few comments to the very good one's already made, I have replaced quite a few big end over the years, (73 now) and have noticed on almost all the steel wheels that the crank pin hole has "shaved" leaving a ridge on the nut side, the best to reduce the risk of this happening to ...

Some years ago I bought some balls and springs from Dragonfly, the balls are 3/16".the springs are 3/4" long 3/16 OD x 0-40 m/m wire Dia,are these for the big end quil? as I understand that the balls in the oil pump are 7/32"dia and the springs are shorter?matt Barton.

Steve Jones who is a member of the vmcc,whether he is a member of the ariel club I don't know, he bends exhaust pipes etc,he told me that he had the tappered tubing,or could get it? I think he lives in the Kingswinford/Dudley area,I will try to find out more, matt Barton

I think that I know most of the causes of wet sumping in single cylinder ariels ? but I would like to ask members for their thoughts on this subject to ascertain what I think I know, or what I have missed! looking forward to seeing members comments. Matt Barton.

For some reason this subject seems to stir up a bit of controversy .ref Britbike forum. Magneto man & the man who marketed the bolt on condenser (sorry l forget his name).I have had about 6 magnetoes rebuilt in the past 20 years all of them in my non expert opinion lacking good magnetic field ...