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Member postings for Nicholas Farr

Here is a list of all the postings Nicholas Farr has made in our forums. Click on a thread name to jump to the thread.

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Thread: Three Jaw Chucks
16/06/2011 07:30:16
Hi Pat, the procedure you have described is one that I've always used, even on keyed drill chucks, and very rarely do I have a drill spin, even in old worn drill chucks. I have had criticism for this as being a bit slow, but when using a pistol drill for instance, I've drilled my hole while they are still faffing about trying to get through with their drill picking up and spinning, causing a stop/start approach.
 
Regards Nick.
Thread: Quorn Kit
14/06/2011 23:19:46
Hi, him outa James Bond with the metal teeth might think its a bit of a light bite.
 
Regards Nick.
Thread: Compressor refurb.
14/06/2011 22:34:06
Hi Anthony, like Derek says, PTFE tape should be OK. You could also use Loctite 55 cord, which is PTFE but it is in cord form. Another Loctite produce you could use is 542 liquid, which has a temperature resistance of 150 *C.
 
Whatever you use, be sure you clean the threads thoroughly before applying any new sealant and reassembling.
 
Regards Nick.

Edited By Nicholas Farr on 14/06/2011 22:37:03

Thread: MIT Videos engineering training videos
12/06/2011 17:30:09
Hi John, sorry I missunderstood what you meant. On all of David's, I see a black video screen, with a semi-transparent grey play button in the middle, some of them have; "An MIT Video production" showing through the button.
 
Regards Nick.
 
I have IE9, BTW.

Edited By Nicholas Farr on 12/06/2011 17:31:40

Thread: Jason's engine
12/06/2011 17:18:07
Posted by John Stevenson on 12/06/2011 15:25:37:
Or just loctite the studding.............
 
A stud will only hydraulic if the nut is seized on the stud and cross drilling will weaken it
 
Most breakages from hydraulic incidents are caused by bolts and not studs
 
John S..
 
Hi John, you are correct of course, but an incident I remember that happen to a colleague many years ago, and one of the studs was damaged, so he used a bit of stainless steel studding and nut on a water pump in its working enviroment and the hole had water in it, and the nut picked up on the thread (like that stuff does sometimes) and just drove the studding in and crack! So it had to go with five instead of six studs.
 
Happy Days.
 
Regards Nick.
Thread: MIT Videos engineering training videos
12/06/2011 17:05:48
Hi John. no, have tried it twice, the play button comes up then dissappers, tried the pause and play, message says "sorry clip not found".
 
Regards Nick.
12/06/2011 16:40:36
Hi David, they have worked for me, just a bit slow getting started, long pause between clicking on the play button and anything happening.
 
Unless you haven't imported them yet, there is nothing in the spaces 6 to 10.
 
Regards Nick.

 

 

Edited By Nicholas Farr on 12/06/2011 17:06:56

Thread: Jason's engine
12/06/2011 15:06:51
Hi, well i have to agree with Jason about proper studs, V studding, especially in castings with blind holes. As Jason says, studding can carry on turning when putting the nut on and during tightening up. Normally it is usual wherever possible to have a blind hole deeper than the amount the stud will screw into it, if using studding there is a risk of the studding bottoming out, and if there is any amount of excess oil or anti-seize compound in the hole, or on the threads, there is a risk of fracture due to hydraulic pressure. If studding is used. it would be wise to drill a very small hole up the stud, and then cross drill into it above where it most likely not to be in the screwed portion of the hole, so that any such hydraulic pressure will not build up.
 
Like Jason also says, I would know.
 
Regards Nick.
Thread: Quorn Kit
11/06/2011 10:36:28
Hi John, could not agree with you more. I too saw the picture on the next edition page, and thought I would make a support bracket for that unsupported end. I'm sure this machine was tried by those who designed and built it, and undoubtedly it works OK as is.
 
I don't myself always have ideas to produce something out of the blue, but to modify something or use different materials/sizes or even add a bolt on, no problem. I've done this even with commercially made industrial machines. Of course sometimes bits can even be removed to improve its suitability for ones own needs.
 
Regards Nick.
 
 

 

Edited By Nicholas Farr on 11/06/2011 10:39:14

10/06/2011 22:12:17
Hi Terry, if its the one I think it is, your too late anyway, as it has ended.
 
Not by me BTW
 
Regards Nick.
Thread: How to dress a small diamond wheel
10/06/2011 21:31:57
Hi,
for those who don't know or haven't seen a star dresser for stone wheels that Clive has discribed, here is a photo of one with a new set of replacement star wheels seperation discs, pin and bushes.
 



Regards Nick.

Edited By Nicholas Farr on 10/06/2011 21:53:52

Edited By Nicholas Farr on 10/06/2011 22:00:23

Thread: Miscellaneous information and materials wanted
09/06/2011 12:52:32
Hi David, in an index I have there was a posting in Smoke Rings Vol122 3052 1960 page 2. Vulcan. Meet Chuck (The Muddle Engineer). Then in issue 3053 on page 34; Humorous, Chuck, The Muddle Engineer. Aspin. Exhibitions Models compared to his own.
 
Don't know if this is what you are looking for. I don't have any 1960's issues so cannot view them myself, but maybe someone else can.
 
Regards Nick.
Thread: The ongoing saga of John's floor
09/06/2011 11:40:02
Hi John, I've not done any multi start screw cutting, but as for the eight start nut, how about fixing the mandrel gear to an index bush/plate of some kind, so it could be adjusted without loosing position on the leadscrew.
 
Nice lot of rotors BTW.
 
Regards Nick
Thread: Living with the digital copies
07/06/2011 22:49:38
Hi David, yes I saw that and I've managed to do one as well, but havn't uploaded it, just wanted to see if I could do a a full one.
 
Martin, if you have a wheel mouse, you can use the wheel to zoom in and out once you have zoomed onto a single page.
 
Regards Nick.
07/06/2011 22:14:36
Hi David, not only that but you get the title bar, the task bar and all the other bits you don't want.
 
Regards Nick.

Edited By Nicholas Farr on 07/06/2011 22:43:24

07/06/2011 22:02:18
Hi well I've just done a screen capture of MEW and one of DM. on the DM there is a margine with an advert on the left hand side about an 1/8 of the screen wide. below is one I've done for MEW.
 

This takes up almost all the screen width, it will zoom in further, but then you have to scroll from side to side.
 
Regards Nick.

Edited By Nicholas Farr on 07/06/2011 22:05:22

Thread: A Challenge - How Would You Machine This Part?
07/06/2011 08:03:51
Hi Jason, I presume the flame cutting was done on a programable profiling machine, if they were done by freehand, the bloke that did them would have a very steady hand.
 
The ratchet drill is something many people may not be aware of these days, I've seen a very old one but never used one. They were common at one time for site work, before magnetic drills became popular and affordable.
 
Regards Nick.
05/06/2011 17:23:52
Hi Andrew, I,m pleased you liked my drawings, they were done while polishing off a large glass of Cótes Du Rhóne, and moving onto a Sauvignon Blanc. They were (if you hadn't guessed) a little tongue-in-cheek in their own way, (I thought the use of a mini grinder would have said it all).

I had gathered that they were done by CNC, but as I've had no experience with CNC or cutting bevel gears for that matter, and the fact that others had already suggested CNC, I thought I'd submit a some what comical alternative. Yes I agree with you, it would be a pretty tedious method, especially to get accuracy, and any templates would take as much, if not more work.

They look a fine pair of gears BTW, and hope your cast iron ones turn out just as good.

Regards Nick.

Edited By Nicholas Farr on 05/06/2011 17:25:13

Thread: Motor wont start
03/06/2011 00:23:41
Hi Alan, pleased you've found my info helpfull, and also that you have seemed to have found your problem. Hope you can find a solution.
 
Regards Nick.
Thread: A Challenge - How Would You Machine This Part?
03/06/2011 00:14:34
Hi,

 

I give up must be an easyer way.
 
Regards Nick
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