Cut down socket for gearbox oil drain
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Cut down socket for gearbox oil drain
Hi All,
Apologies if I've asked this before - can anyone recommend somewhere that sells a cut-down socket for undoing the gearbox oil drain plug? I can't undo mine, as the exhaust is in the way - I assume this is common on all or most R1100S. I don't have the facilities for cutting one down myself, and don't especially feel like paying a dealer to undertake such a basic task!
Thanks,
Nik
Apologies if I've asked this before - can anyone recommend somewhere that sells a cut-down socket for undoing the gearbox oil drain plug? I can't undo mine, as the exhaust is in the way - I assume this is common on all or most R1100S. I don't have the facilities for cutting one down myself, and don't especially feel like paying a dealer to undertake such a basic task!
Thanks,
Nik
- jeznewsome
- Posts: 350
- Joined: Sat Aug 04, 2012 7:30 am
- Location: Preston, Lancs
Re: Cut down socket for gearbox oil drain
As above , I cut down a car drain plug type tool using a hack saw and a vice , if you don't have these facilities I found this link from a bmw car forum , but the drain plug can be tight and it may not work.Motocod wrote:Hi All,
I don't have the facilities for cutting one down myself, and don't especially feel like paying a dealer to undertake such a basic task!
Thanks,
Nik
http://www.bokchoys.com/differential/14mm_bolt.htm
_________________
Nigel
Keep smiling, it makes people wonder what you've been up to!
1999 R1100s (mandarin) '
2018 DL 250V Strom
2019 CB125F Honda.
MZ301 Saxon Fun ( currently retired)
'03 Bullet 65 project..
Nigel
Keep smiling, it makes people wonder what you've been up to!
1999 R1100s (mandarin) '
2018 DL 250V Strom
2019 CB125F Honda.
MZ301 Saxon Fun ( currently retired)
'03 Bullet 65 project..
- The Teutonic Tangerine
- Posts: 1649
- Joined: Mon Jan 28, 2008 3:18 pm
- Location: Essex
- Contact:
If using a straight section of allen keyin a ring spanner then an inch or inch and a half is aedequate. If you are grinding down the key to use the key itself then I guess as long as you have about 3/4 of an inch that would be fine.
There would appear to be a surfeit of prolixity and sesquipedalian content today please do not use a big word when a singularly un-loquacious and diminutive linguistic expression will satisfactorily accomplish the contemporary necessity
Re: Cut down socket for gearbox oil drain
The solution in your link might work, but i'm wondering: where did that guy find a screw with a 14 mm hex head? They must be as rare as hens teeth. Standard head on a M8 is 13 mm (or 12mm). Std head on a M10 is 17 mm (or 16 mm). My guess is, since he's an american, that he used an 9/16” UNC head screw. It might fit. 9/16”= 14.2 mm. But why doesn't he say so?nab 301 wrote:As above , I cut down a car drain plug type tool using a hack saw and a vice , if you don't have these facilities I found this link from a bmw car forum , but the drain plug can be tight and it may not work.Motocod wrote:Hi All,
I don't have the facilities for cutting one down myself, and don't especially feel like paying a dealer to undertake such a basic task!
Thanks,
Nik
http://www.bokchoys.com/differential/14mm_bolt.htm
I don't know how readily available inch size screws are in the UK. In Sweden they are harder and harder to find.
First time i changed the trans oil on my bike i used a vise-grip. It's a shed mechanic approach that leaves nasty marks on the drain plug. I don't recommend it.
Now i use a cut down allen key.
R1100S '04
K100RS '90
GSX1100 (1327cc) '81
Lada Niva '12
CCDV '72
K100RS '90
GSX1100 (1327cc) '81
Lada Niva '12
CCDV '72
Re: Cut down socket for gearbox oil drain
Whitworth and even unified fasteners are available, along with mole grips, if pushed.Tapio wrote:The solution in your link might work, but i'm wondering: where did that guy find a screw with a 14 mm hex head? They must be as rare as hens teeth. Standard head on a M8 is 13 mm (or 12mm). Std head on a M10 is 17 mm (or 16 mm). My guess is, since he's an american, that he used an 9/16” UNC head screw. It might fit. 9/16”= 14.2 mm. But why doesn't he say so?nab 301 wrote:As above , I cut down a car drain plug type tool using a hack saw and a vice , if you don't have these facilities I found this link from a bmw car forum , but the drain plug can be tight and it may not work.Motocod wrote:Hi All,
I don't have the facilities for cutting one down myself, and don't especially feel like paying a dealer to undertake such a basic task!
Thanks,
Nik
http://www.bokchoys.com/differential/14mm_bolt.htm
I don't know how readily available inch size screws are in the UK. In Sweden they are harder and harder to find.
First time i changed the trans oil on my bike i used a vise-grip. It's a shed mechanic approach that leaves nasty marks on the drain plug. I don't recommend it.
Now i use a cut down allen key.

14mm heads are found on jap bikes, although most are flange headed, with radiused corners, so maybe not ideal for the task above.
Fasteners on my bikes get converted to stainless as I go along, so the 14mm and 12mm tend to disappear. Exception being, for example, caliper bolts, where I stick to specialist made.
How's the weather over there? I've been a "non-salty-road" rider for the last three years, but I'm fed up with that. Gonna, get myself a winter tool sorted fir next time.
Cheers.
Re: Cut down socket for gearbox oil drain
You are correct! All bigger screws on my K100 are allen. On the BCR a mix of Allen and torx.Corvus wrote:Whitworth and even unified fasteners are available, along with mole grips, if pushed.Tapio wrote:The solution in your link might work, but i'm wondering: where did that guy find a screw with a 14 mm hex head? They must be as rare as hens teeth. Standard head on a M8 is 13 mm (or 12mm). Std head on a M10 is 17 mm (or 16 mm). My guess is, since he's an american, that he used an 9/16” UNC head screw. It might fit. 9/16”= 14.2 mm. But why doesn't he say so?nab 301 wrote: As above , I cut down a car drain plug type tool using a hack saw and a vice , if you don't have these facilities I found this link from a bmw car forum , but the drain plug can be tight and it may not work.
http://www.bokchoys.com/differential/14mm_bolt.htm
I don't know how readily available inch size screws are in the UK. In Sweden they are harder and harder to find.
First time i changed the trans oil on my bike i used a vise-grip. It's a shed mechanic approach that leaves nasty marks on the drain plug. I don't recommend it.
Now i use a cut down allen key.
![]()
14mm heads are found on jap bikes, although most are flange headed, with radiused corners, so maybe not ideal for the task above.
Fasteners on my bikes get converted to stainless as I go along, so the 14mm and 12mm tend to disappear. Exception being, for example, caliper bolts, where I stick to specialist made.
How's the weather over there? I've been a "non-salty-road" rider for the last three years, but I'm fed up with that. Gonna, get myself a winter tool sorted fir next time.
Cheers.
But i found that the M10 screws holding the rear brake caliper on my Suzuki GSX are 14 mm.
Oh, we have had a few days of 5-10+ deg, so all snow is gone.
I've been thinking of getting a winter bike too. I like the Yamaha XT500's from the late 70's.
But then again: i think (not sure) it has a 6V electrical system and points ignition...
R1100S '04
K100RS '90
GSX1100 (1327cc) '81
Lada Niva '12
CCDV '72
K100RS '90
GSX1100 (1327cc) '81
Lada Niva '12
CCDV '72
-
- Member
- Posts: 3644
- Joined: Tue Nov 01, 2005 4:35 am
- Location: North East
Just looked t my manual for the SR500 and it is 6V for the XT (12V for the SR) and it would appear they used points. The 1980 US models used a CDI unit but cannot find a mention about the UK version
'15 R1200GS TE
'06 R1200S
'04 BCR
Yam SR 500 long term restoration
wanna win the lottery and ride my bike
'06 R1200S
'04 BCR
Yam SR 500 long term restoration
wanna win the lottery and ride my bike
Re: Cut down socket for gearbox oil drain
I remembered, too late, your photos a while back showing the suzuki. Of course you'd know, what I said. I'm an idiot sometimes. Apologies, but that's the way it is.Tapio wrote:You are correct! All bigger screws on my K100 are allen. On the BCR a mix of Allen and torx.Corvus wrote:Whitworth and even unified fasteners are available, along with mole grips, if pushed.Tapio wrote: The solution in your link might work, but i'm wondering: where did that guy find a screw with a 14 mm hex head? They must be as rare as hens teeth. Standard head on a M8 is 13 mm (or 12mm). Std head on a M10 is 17 mm (or 16 mm). My guess is, since he's an american, that he used an 9/16” UNC head screw. It might fit. 9/16”= 14.2 mm. But why doesn't he say so?
I don't know how readily available inch size screws are in the UK. In Sweden they are harder and harder to find.
First time i changed the trans oil on my bike i used a vise-grip. It's a shed mechanic approach that leaves nasty marks on the drain plug. I don't recommend it.
Now i use a cut down allen key.
![]()
14mm heads are found on jap bikes, although most are flange headed, with radiused corners, so maybe not ideal for the task above.
Fasteners on my bikes get converted to stainless as I go along, so the 14mm and 12mm tend to disappear. Exception being, for example, caliper bolts, where I stick to specialist made.
How's the weather over there? I've been a "non-salty-road" rider for the last three years, but I'm fed up with that. Gonna, get myself a winter tool sorted fir next time.
Cheers.
But i found that the M10 screws holding the rear brake caliper on my Suzuki GSX are 14 mm.
Oh, we have had a few days of 5-10+ deg, so all snow is gone.
I've been thinking of getting a winter bike too. I like the Yamaha XT500's from the late 70's.
But then again: i think (not sure) it has a 6V electrical system and points ignition...
6volts.... not so good.
Points.... you know what. I'm fed up with (electronic) technology. I'll take the points. You can keep the computers. (Except the I pad, that can stay) (oh, and the kindle fire. That can stay too).
I'd stand a chance of constructing my own system, points included, using my own hands. A computer? Nah.
The 14mm hex in the photo is 12mm long so just add on the width of a ring spanner . I have to use a 24mm spanner so the 32mm is the max length that can be used with that combination, I'm too lazy to shorten it.Motocod wrote:Thanks guys, I'll see about cutting one down at work. Can anyone advise the finished length please?

_________________
Nigel
Keep smiling, it makes people wonder what you've been up to!
1999 R1100s (mandarin) '
2018 DL 250V Strom
2019 CB125F Honda.
MZ301 Saxon Fun ( currently retired)
'03 Bullet 65 project..
Nigel
Keep smiling, it makes people wonder what you've been up to!
1999 R1100s (mandarin) '
2018 DL 250V Strom
2019 CB125F Honda.
MZ301 Saxon Fun ( currently retired)
'03 Bullet 65 project..