On the one hand when using modern oils and filters the oil change interval can be extended and save the planet and you pocket. On the other hand it is a good ides to change the oil at regular intervals, irrespective of the mileage. Annual is usually quoted but if in regular use every month or so I w...

We have had heads welded up at Draganfly, Which I think was done after machining a large countersink so that the weld could reach lower down into the hole, not just round the top. We do this when repairing pulled studs on SQ4 heads but have only had to resort to this a couple of times with VH heads,...

From the works drawings, so not the latest spec
3-52 DTD 424
36-50 'Y' alloy
35-54 DTD 324
12002-54 DTD 324
35-55 DTD 324
51-56 DTD 424 die casting
35-56 DTD 424
46-56 DTD 424
51-56 DTD 424 die casting
47-49 MKI 'Y' alloy
47-53 MKII DTD 424 (heat treated)
K2-53 KH 'Y' alloy

To be honest I don't use a set torque just basically as tight as I can. The limit is reached when the crank flies out of the vice that is holding the crank while you lean on a 2 metre scaffold pole.

That might be a bit much, the official figure is FT, 60-80 ft lb is sufficient, as long as the taper is good, too tight and you may shatter the wheel

That's a new one!

As original

Use a suitable piece of tube, a deep reach socket or box spanner etc. You will need a big strong vice, an hydraulic press is better. Not a hammer!

The Draganfly listing is taken from official docs such as Owner's guides that are all available to download form the club website for members.

The cam pinion will very quickly show some signs of wear on a portion of the teeth and wear no more after that, warned Ariel many years ago. The half time pinion does not do this so if yours is showing signs of distress try a new one.