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PostPosted: Mon Jul 23, 2018 5:17 pm 
Karma Queen / Cake Meisterin
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Location: North Yorkshire
I have Shimano DX thumbies on my son's bike and getting more, the bolt shows a + shaped grove not like a Phillips, I used a Phillips and a flat head before but have always struggled to get them tightened up properly. Do I need a JIS screwdriver? or is there some other screwdriver that fits in these type of heads?

Thank you

Alison


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 Post subject: Re:
PostPosted: Mon Jul 23, 2018 5:25 pm 
retrobike rider
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Pozi-Driv maybe?

https://www.pbswisstools.com/en/news/de ... ple-terms/


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 Post subject: Re: Re:
PostPosted: Mon Jul 23, 2018 5:32 pm 
Karma Queen / Cake Meisterin
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Splatter Paint wrote:


The example of the Phillips type cross seems to be closer to mine than the pozi, maybe it's pzi-drive I've got not Phillips and that's why they are not working

Alison


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PostPosted: Mon Jul 23, 2018 5:58 pm 
King of the Skip Monkeys
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Replace them with standard bottle cage sized bolts then an allen (or 'Alison'?) key is your friend.


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 Post subject: Re:
PostPosted: Mon Jul 23, 2018 6:40 pm 
Retro Guru
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Do you mean like this -

Attachment:
dx1.jpeg
dx1.jpeg [ 12.35 KiB | Viewed 168 times ]


Or this maybe? -

Attachment:
dx2.jpeg
dx2.jpeg [ 21.5 KiB | Viewed 168 times ]


LGF's suggestion is a good one.


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 Post subject: Re: Re:
PostPosted: Mon Jul 23, 2018 6:42 pm 
Karma Queen / Cake Meisterin
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Location: North Yorkshire
Johnboy wrote:
Do you mean like this -

Attachment:
dx1.jpeg


Or this maybe? -

Attachment:
dx2.jpeg


LGF's suggestion is a good one.


The former one :)

Yes I like LGF's idea :)

Alison


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 Post subject: Re:
PostPosted: Mon Jul 23, 2018 6:49 pm 
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That's standard Phillips, I find it's important to get the right size driver. It always surprises me just how big a driver you need sometimes. Failing that if it's exactly the same as the photo use a hex socket to tighten it.


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 Post subject: Re: Re:
PostPosted: Mon Jul 23, 2018 6:51 pm 
Karma Queen / Cake Meisterin
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Johnboy wrote:
That's standard Phillips, I find it's important to get the right size driver. It always surprises me just how big a driver you need sometimes. Failing that if it's exactly the same as the photo use a hex socket to tighten it.


Yes it's exactly the same. I didn't notice the hex bit :facepalm:

Alison


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PostPosted: Mon Jul 23, 2018 6:55 pm 
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Quote:
I didn't notice the hex bit :facepalm:


:lol: :lol:


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PostPosted: Thu Jul 26, 2018 9:09 pm 
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Joined: Mon Apr 03, 2006 5:11 pm
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i always use a 1/4" socket on those, if you use a screwdriver it quickly chews hem up, then goes rusty.


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