90 degree screwdriver

[ddaniels]

I have the Motion Pro tool.

It is indeed very nice quality and it is indeed kind of expensive.


So far, it's also been completely useless. There is simply no way to tell whether it's engaged with the screw. Plus there's just not enough space to get the tool in place on many bikes.


One of my more disappointing purchases, TBH.


That said, I've never worked on a Fizzy, so who knows; this tool or something like it might be the absolute cat's patoot for that job on that bike.

Which one do you have, the one with gears or the cable driven one?

[Gorminrider]

...I've got a"90 deg" thing for $30 at the hardware store that is actually gear-driven and no slop...but mine is bulky and I filed it down before it would fit in amongst the obstructions...and I only have real success on one twin with it. There never seems to be room for it to sit up straight, even varying the screw bit length.

BUT on two other bikes, just a screwbit in a piece of heavy rubber brake hose.no "90 degree" stuff .. What's wanted is just something you can get up in there and turn with your fingers while you hold it tight to the screw with one contorted hand...luckily most pilot screws are fairly easy to turn.

....It's something to try .......maybe a little hose clamp can help hold the bit tight if your hose doesn't ...or, as an idea, a nut,washer or wingnut drilled out to suit the bits ....(adjusting the diameter of the "holder" adjusts your torque and accuracy turning the screw but ..too big and it can't be handled).

oh, put a tiny screw into the rubber hose to orient the tip so you have a clue where you're at per turns and where the slot end is oriented...

[ddaniels]

No room for my hands.

[greg78gs750]

those wacky japanese and their contortionist mechanics at it again

[Spyder]

I commonly use one of those "free" pocket screwdrivers for my '83 GS. You know, the little ones with the pocket clip, and the (usually) magnet at the other end? I cut the plastic handle down, and hammer the shaft further into the handle. Ground a small line into opposite sides of the handle, and filled them in with a sharpie for half turn reference marks. Doesn't work On my GSXR though. Have to use the gear driven tool in question.

[Grimly]

Nope. Not enough room to swing side to side. I need something that twists like a screwdriver.

Somebody makes a gear-driven rotary ratchet wrench, but I can't think who. I came across mention of it on Garage Journal a couple of years ago.
I seem to recall it wasn't cheap, either.
It's pretty much like the tool up there, but more substantial and available in 3/8" and 1/4" drive. Just place it and twist the handle, same as that one.

[Grimly]

those wacky japanese and their contortionist mechanics at it again

I recall it being a common complaint amongst mechanics when the 400/4 mini-GP bikes started coming in. No room to work on anything.

[bwringer]

Which one do you have, the one with gears or the cable driven one?

The one with the gears that's linked in the first post.

[salty_monk]

I have some tool where you squeeze the grip to get the driver to turn... useless for the same reason. You can't tell when it's engaged & barely how much you're turning. These days I use these which do the job with a bit of fiddling about...

Think I got mine at an ace hardware in their "bargain bin" for not much money...

https://www.summitracing.com/parts/wmr-w80004?seid=srese1&gclid=Cj0KCQiAtrnuBRDXARIsABiN-7BG9V3_l6r4p3ALD1FyqyYvgOI5bV3pyxxgtv9iNe5dbenuz0uDBMEaApTcEALw_wcB

[ddaniels]

It's been a while since I was in that predicament on my Gen 1, I had a cheap 90 degree unit that worked on carbs 1 & 2 and maybe 3 coming in from the left side. On carb #4 I took a small 3" long flat blade screwdriver and cut 90% of the plastic handle off. I can reach in from the #4 side (right side). With the handle gone there is enough room to position the screwdriver vertically inside the adjustment screw collar. . I may have used the same technique from the other side on the #3 carb but can't remember back.

I saw the Phaseshifter "Phess up" on the FZ1OA. Always something.

Yep that's me.

[Buffalo Bill]

On the GS1100G I used a short multti-tip screwdriver and a Gunson Colortune.
Probably more room on the 1100G than any other straight 4 bike.
On my GSXR 1127, I could only fit a screwdriver tip and my hand under the carbs.
I bought an angled carb adjustment screwdriver like the one Spyder linked, but it has no feedback feel, so I got frustrated with it.
Spyder and I have the similar engines with Slingshot carbs.

[Spyder]

I'm telling you. Take the handle apart, and pull that little BB out. It's the "clicking" that is losing the "feel" of what you're doing. It doesn't make it perfect of course, but it beats taking them out for a freaking air screw adjustment. Which is what I was doing until I bought this thing. I too got frustrated, and a bit pi$$ed because it isn't cheap. I got determined to MAKE this thing work. Give it a try...

[wymple]

One more reason to like my 850G. Pretty easy

[EDGECRUSHER]

I bought the cheaper motion pro a long time ago to get into the carbs on my 94 GSXR750 which I had overbored to a 907. There for awhile I was constantly taking the carbs loose to adjust trying to get the mixture right. Even though everyone doesn't like the cheaper version, for somebody who might need this once every couple years it's a lot better than nothing. It's basically a tube with a bend and a flat bit attached to a cable which runs through it. It has a regular screwdriver handle attached at the other end and you can pull the cable back and forth which sucks the bit in and out of the end. People think this is stupid, but it's just something you have to think about when using it. You can control the pressure on the screw with it. Then the end of the rigid tube it rides in is flared at the end to allow it to hug the boss your mixture screw is in and align it.

[salty_monk]

Anyone tried one of these with a straight driver or T bar on the end of it?

https://www.amazon.com/Cal-Van-Tools-483-Degree-Gearless/dp/B000I1TA5C

I have one of these but it's not easy to use as again you can't really tell when it's properly engaged...

https://www.amazon.com/CRL-SQW100R-15-Piece-Squeeze-Wrench/dp/B00QL4YV9A