Do you have access to a spare length of the shaft? It will be pretty easy to turn it into a thread chaser with an angle grinder....
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The PF Bolt and Thread guru thread
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"Where can we get hold of a Vincent Black Shadow?" "Whats that?" "A fantastic bike," I said. "The new model is something like two thousand cubic inches, developing two hundred brake-horsepower at four thousand revolutions per minute on a magnesium frame with two styrofoam seats and a total curb weight of exactly two hundred pounds."
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Originally posted by Greg Rust View PostJust ugga dooga it up with the rattle gun.
Originally posted by Beavis View PostIf I can help with shipping anything to you please let me know.
Could be that the supplier of the die won't ship international, so I might take you up on that offer, depends how things turn out.
Originally posted by gxxr View PostThere was a mob in Coburg Vic who specialized in making acme thread and nuts about 10 years back, a mate bought a 6ft length from them for a lathe - can't remember the name unfortunately. Failing that, hare and forbes might have something off a cross-slide or compound that would fit? I might try Graham McDonald Services out at Girraween to see if they can see a problem with your nuts first....given limited measuring equipment.
I was at Graham McDonalds on Wednesday, we tried the taps they had one the shelf, they didn't have any dies though.
If i'm going past Hare & Forbes i'll stop in and have a look.
Originally posted by gxxr View PostProblem no doubt, he's been turned away for a piddly job.
Originally posted by Faux Forg View PostYou could use the taps that you have to check the thread pitch of the stud. If it is what I think it is, the thread could be stretched, which would cause the jamming you're experiencing.
Also the taps were pretty loose in both the original and the new gears, so it did not appear that they would be of any help.
EDIT the stretching crossed by mind, but seems kind of doubtful, it's a little pissy electric motor driving this gear via a cable & worm gear. Also it's steel, pretty tough, and if it was stretched you'd expect the original gear to be jamming up on it too, but it spins freely...
Originally posted by Faux Forg View PostAlso, if you can force the tap with a (not running) lathe/drillpress/etc as you wind it through, you might gain enough clearance for it to work, assuming it's not binding on the crest. Obviously this is rough as guts though.
For now I just have to wait until the nuts and rod turn up, and then I have some "gauges" to play with.Jaguar XJR, Freelander 2 HSE, Jaguar XKR, MINI Cooper S
Originally posted by nutttr
People must assume you are some sort of drug dealer with all these nice cars turning up to a fibro home
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Originally posted by Gammaboy View PostDo you have access to a spare length of the shaft? It will be pretty easy to turn it into a thread chaser with an angle grinder....Jaguar XJR, Freelander 2 HSE, Jaguar XKR, MINI Cooper S
Originally posted by nutttr
People must assume you are some sort of drug dealer with all these nice cars turning up to a fibro home
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Just another idea, Mick Moyles at Summer Hill might be another possibility. It's an Aladdin's Cave of shit, bordering on hoarding, but lots of obscure bits and pieces which might include nuts.
If I was going to modify the gear, you'd have to make a fixture or make soft jaws to hold it to avoid damaging the brass in the chuck. Part of the machining issue, will be the need to buy inserts for most people.....not all that common a requirement and they'll sit on the shelf forever waiting for the next use - or single point grind some hss.
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Alright my threaded rod and nuts arrived from the US....
Unsurprisingly the original gear is a bit loose on the rod. The new brass gear is a bit tighter, but moves ok if not with a little chatter. The nut feels about the same a the brass gear.
I cannot get the new nut onto the original spindle more than a half turn, it binds up even worse than the brass gear.
So, options now...
Buy that die for $100 USD + $??? shipping, and recut the thread on the spindle....
Or what are the chances of making a die or dies out of these nuts?Jaguar XJR, Freelander 2 HSE, Jaguar XKR, MINI Cooper S
Originally posted by nutttr
People must assume you are some sort of drug dealer with all these nice cars turning up to a fibro home
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I'd seriously look at stripping the black plastic off the steel insert and machining the brass thread out. Hell, if i could actually use my lathe at the moment, I'd offer to do it for you."Where can we get hold of a Vincent Black Shadow?" "Whats that?" "A fantastic bike," I said. "The new model is something like two thousand cubic inches, developing two hundred brake-horsepower at four thousand revolutions per minute on a magnesium frame with two styrofoam seats and a total curb weight of exactly two hundred pounds."
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The PF Bolt and Thread guru thread
Originally posted by Greg Rust View PostGet a thread gauge and measure them.
The thread is clearly not a common off-the-shelf standard, these rod and nuts are a standard, and the closest one there is to it.
Modifying the thread on the spindle to a standard thread with a standard die is going to be a lot easier and cheaper than "custom".
Or am I missing something?
Originally posted by Gammaboy View PostI'd seriously look at stripping the black plastic off the steel insert and machining the brass thread out. Hell, if i could actually use my lathe at the moment, I'd offer to do it for you.
Whatever the solution is, it needs to work quickly on the next two. Removing the original gear and re-working it outside somewhere each time is not really practical for the next two cars...
But what about making a couple of the nuts into dies? Looks like a few holes milled in the nut, a tapered grind on one side, harden them, and it might work?
Looking at my other dies, it seems kind of doable, but I have my doubts since the nut is kinda loose on the rod...
Jaguar XJR, Freelander 2 HSE, Jaguar XKR, MINI Cooper S
Originally posted by nutttr
People must assume you are some sort of drug dealer with all these nice cars turning up to a fibro home
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I bet the depth of the thread is non-standard.. although running the 11.4mm through it 'should' have fixed that - unless it's galled it up..
also looks like the outer edge of the thread is thicker on the car? in which case nothing you can fucking do.. except put it in a lathe and re-cut it..
can you buy the part from another car? enough that you can find a hobby machinist that could make you nuts?This is a post i wrote by mistake, which is nice...
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OK so might have a bit of a breakthrough on this. Stopped in an another machinist (guy who did some work for me a few years ago) and explained/showed him the problem.
There is ACME thread, then there is Stub ACME thread. Seems likely that the spindle in the car could be a Stub ACME thread.
He pretty much told me to eat a dick when I asked if he could cut me a female Stub ACME thread in 1/2"-10 though...
Stub ACME being the same pitch, same 29deg, but the depth of the threads is shallower. So you can screw a Stub ACME nut onto regular ACME male thread, but not vice-versa.
Looking at the ACME threaded rod I bought in, compared to the spindle in the car, yeah the threads on the ACME rod are much deeper, even just by looking at them.
In theory, you could run an ACME die over the Stub ACME thread and cut them a bit deeper. Which is where i'm at now...Jaguar XJR, Freelander 2 HSE, Jaguar XKR, MINI Cooper S
Originally posted by nutttr
People must assume you are some sort of drug dealer with all these nice cars turning up to a fibro home
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The PF Bolt and Thread guru thread
Finally...
My 1/2-10 ACME die arrived from the USA
Made in fucking China of course...
Had to get a 27mm deep socket...
But it recut the thread on the spindle and the brass gear spins freely on it now.
Because the die is symmetrical, thread can be started on either side, I couldn't cut the last few mm of the thread on the spindle, but that's about as good as it's gonna get...Jaguar XJR, Freelander 2 HSE, Jaguar XKR, MINI Cooper S
Originally posted by nutttr
People must assume you are some sort of drug dealer with all these nice cars turning up to a fibro home
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