slipping screwdriver

[jeff650gx]

This concerns those Jap screws that like to strip if you dont have the right driver. Before i attempt to strip one I put a small spot of valve grinding compound in the grooves This helps greatly to grip the driver to the screw. I hope this helps anyone. Happy Trails

 

[morrigan]

Had the same trouble with phillips head screws! Had to grind the last one off when it burred I intend to replace all the phillips heads with allen heads... no more burred screws! However, I'll give your method a go next time I have to remove one.

 

[Guest]

I agree.Get them out however you can,then throw them in the bin.Cheers,Simon.

 

[midnightcafe]

i use pb blaster then hit it with the craftsmen impact driver. just bought it (today!). saved me my sanity!

 

[Clone]

You also should remember that Asian philips head screws are different than North American philips head screws, so often you need to check that you have the proper screwdriver bit to properly work on your bike.

 

[makenzie71]

http://www.thegsresources.com/_forum/showthread.php?t=127454&highlight=impact+driver

You also should remember that Asian philips head screws are different than North American philips head screws, so often you need to check that you have the proper screwdriver bit to properly work on your bike.

He actually covered that in the very first line of this thread.

 

[midnightcafe]

i find that i can get away with using ANSI screwdrivers on JIS screws if I'm careful, but I'm curious to how the big guys do it, as in guys with nice garage setups-do you use philips, jis screwdrivers and/or jis bit ends?

 

[PAULYBOY]

I work with 24 techs. All have limited Japanese background as well as German stuff. None have ever heard of Japanese type screwdriver tips being different.
All of them have told me that when they don't have access to their impact drivers, they do it this way: spray with something like Rustoff or Pblaster, wait 5 minutes, whack squarely with at least a 1 lb. hammer, wait 10 minutes, lock on with vice grips OR use the tightest firring phillips bit you can find and push it AGAINST the screw gead while turning.

 

[midnightcafe]

nice, i was told banging the screw would free the corrosion. good to know this is true.

 

[Guest]

I work with 24 techs. All have limited Japanese background as well as German stuff. None have ever heard of Japanese type screwdriver tips being different.

A while back, there was a thread on the difference between Japanese screwdrivers and American/DIN. I bought three Phillips screwdrivers made to the Japanese standard. While I can see a slight difference in the shape of the tips (or at least I think that I can) I've been unable to detect any difference at all in how well they grip screws, either American or Japanese. Maybe the manufacturing tolerances on the screws are too sloppy for precision tools to make such a difference.

 

[hampshirehog]

Tha Jap Phillips are not in fact Phillips at all - looks like a Phillips screw, but are designed not to cam out (useful for robot assembly lines). Heads are usually identifiable by a single dot to one side of the cross slot. Their correct name is JIS - all a bit technical but have a look at:

http://www.webstore.jsa.or.jp/webst...2:1985&dantaiCd=JIS&status=1&pageNo=0&lang=en

 

[crazedfooter]

i think they make a huge difference, i love em, wouldn't work on a metric bike without my set. best 20 bucks i ever spent.

my 2 cents
nick

 

[STANDIGGITY]

Just bought ym JIS screwdrivers, two of them (#1 and #2 size)

Here ya go:
http://amessupply.com/products1.cfm?aid=1&cid=D&sid=DE&fid=1404070

 

[Matchless]

If you ever want to compare these cross slotted screws, use one of those screwdriver bit sets. They usually have a large selection of every type of bit with short hexagon shafts. You can then compare the fit to each type of crosscut screw head and will be surprised at the difference. Once you have the right one check the size stamped on it and there you have it.

The trick is to use a very long shaft screwdriver rather than a short one, even if the bit is the same. If you need to move tight screws always use the longest shaft screwdriver that can get in there.

 

[knotzilla]

They should of used Robertsons in the first place, Ted

 

[Steveb64]

I think you're talking about 'Phillips' and 'Posidrive'?

I think you're talking about 'Phillips' and 'Posidrive'?

An explanation - copied from a fasteners FAQ...

Cross head screws. These come in two varieties, Phillips and Posidrive.
The differences lie in the way that the drivers are machined. The
Phillips driver has 4 simple slots cut out of it, whereas in the case of
the Posidrive each slot is the result of two machining processes at
right angles. The result of this is that the arms of the cross are
parallel sided in the case of Posidrive, and tapered in the case of
Phillips. Posidrive is less likely to slip out because of this, but as
there are small protrusions left in the bottoms of the grooves a
posidrive driver will not fit a Phillips screw correctly. Both varieties
come in a range of sizes. The case screws on Japanese bikes are
universally Phillips.

If you need to see a picture, try this link: http://www.justbrits.com/pozi/pozidriv.html

 

[Guest]

I think that Phillips was designed to slip out to prevent over-torqueing.

 

[trippivot]

American phillips are designed to "cam out" especially the #2 size
lots of guys try to use a #2 on what needs to be a bigger #3 also
get a J.I.S. tip tool japanese industrial standard or
swap to allen head and get some ball end tips you'll love it!!

less than 90 inch pound torque on a 6X1

 

[sschering]

You can get a set of JIS screwdrivers from McMasterCarr
http://www.mcmaster.com/#jis-(japanese-industrial-standard)-screwdrivers/=2rxnz7

order item #53325A41
It's a set of 4 drivers size #1,#2,#3 and #4

They really do work and don't cam out.

They are the only place I've found that has #3 and #4 available.

Sorry about the blast from the past..