SOHC.co.uk Forums > CB500/550
500 alternator stator screws - five out of six are solid.
Trigger:
They will cam out as, i use PH on stripping engines and grind the tip so they fit better. I am not worried about screw head damage when removing as i always replace with new JIS. Putting a engine together i always us JIS bits as a PH bit chews the BZP plating and will rust very easy ;)
Cam out test >>> https://www.youtube.com/watch?v=3SSLsJNgn4M&t=99s
Oddjob:
That test is flawed though, they are using a JIS and a PH in a PH screw, a better test would have been to use a JIS screw as well.
Trigger:
Depends on what you look as flawed. If a PH driver cams in a PH head it will cam even easier in a JIS head. JIS were out well before Phillips so, Phillips is just a copy or a take on JIS. Before that brit and usa bikes were still using slotted ;)
McCabe-Thiele (Ted):
I suspect that the new range of JIS PH type of tip would have passed as they are visually different to a Phillips.
Oddjob:
You're missing the point. The problem is a JIS screw not a PH screw. PH was designed to cam out so that they didn't strip screws when being inserted by a machine. So linking that test proved nothing, if it had featured a JIS screw and used a PH driver and a JIS driver that would have addressed the point of the original question.
Try sourcing Vessel screwdriver sets Ted, I bought a set from Amazon a couple of years ago https://www.amazon.co.uk/Vessel-Megadora-2x100-2x150-Screwdriver/dp/B071SGNCSM/ref=sr_1_9?crid=1LAE2J1A245FD&keywords=vessel+JIS&qid=1689342831&s=diy&sprefix=vessel+jis%2Cdiy%2C72&sr=1-9
Not marked as PH as well.
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