A big shiny medal to the bloke who invented....

_Left handed_ twist drills. Oh yes. The man is a saviour of broken exhaust
studs.
I'm doing a bit of work on a trike for an aquaintance which included an M6
stud he'd snapped off below the face of the threaded boss on the exhaust
port on cyl no.2. Probably the most awkward to get at hole on the whole
engine. A jig I made about 10 years ago clamped to the frame and aligned
correctly using the good thread as a reference, then in with a stiff centre
drill and then a left handed twist drill. Got to within about 2mm of the
bottom of the broken stud without breaking into the threads and out she
came. Luverly!. Quick run through with a tap on all of the other stud hole
to clean them out, and now it's all ready for the new studs.
Saved me an engine out/head-off job and a trip to the spark eroders.
I *love* having the correct tools to hand.

JB

 

Using the patented Mavis Beacon "Hunt&Peck" Technique, JB

Oh yes. Oh yes indeed. LH drill bits are marvellous things, to be sure.

--
Wicked Uncle Nigel - "He's hopeless, but he's honest"

WS* GHPOTHUF#24 APOSTLE#14 DLC#1 COFF#20 BOTAFOT#150 HYPO#0(KoTL) IbW#41
SBS#39 OMF#6 Enfield 500 Curry House Racer "The Basmati Rice Burner",
Honda GL1000K2 (Fallen apart)
Suzuki TS250 "The Africa Single" Honda ST1100 wiv trailer Norton 850 Commando
Kawasaki GTR1400

 

And the elephant in the room is...
All I need now is a left hand drill.

Blame the booze, I'm off to bed.

 

Many Bosch (for example) drills made in the past 20 years have a reverse
switch.
--
Dave
GS850x2 XS650 SE6a

Teach a man to fish and he and his pikey mates will have the
river cleaned out in a day.

 

Grimly Curmudgeon says...

My Bosch drill must be 21 years old then.

--
Lozzo
Triumph Daytona 955i SE
Suzuki SV650 K3
Hoinda CBR600 F-W
Suzuki GSX-R750L
Yamaha SR250 SpazzTrakka

 

It doesn't have an 'R' in the model number then? Great design though;
the reverse switch is just under the body in front of the trigger, right
where you accidentally flick it from time to time.
--
Dave
GS850x2 XS650 SE6a

Teach a man to fish and he and his pikey mates will have the
river cleaned out in a day.

 

My nigh-on 20-year-old B&D Pro drill has one of them. The day I got
it, I accidentally snapped said switch off, leaving nowt but a stump
under the trigger. I was quite miffed about that, and have been for
~20 years, until I read your post. Can't catch the stump
accidentally, can I? Can still use it by catching it with a poked-in
fingernail, though.

I is a happy driller now - cheers.

 

But a cup of cold sick to the man who invented Yamaha exhaust flange
gaskets.

How the fsck was I to know that these were one shot things, and would
never seal with re-use, particularly not against a new downpipe.

Took two goes with 2 different exhausts to realise that.

Tell the man to hurry up and deliver my new gaskets. Grr....

P.

 

Pretty much like Kawasaki exhaust seals then. I tried putting my new
exhaust system on with the old seals and some assembly paste but gave
up and used new seals in the end. Thanks again to Christofire for
getting those for me.