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Member postings for Clive Hartland

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

<< First < Prev 131 132 133 134 135 136 137 138 139 140 141 Next > Last >>
Thread: 5 CC CI engine (and a bit of a Grump)
26/10/2011 11:06:00
As said, 'Keep taking the pills and smile'.
Dont let the detail get you down Ramon, you did good and its published and as always something is found by people, that you took for granted and they make an exception!
 
Clive
 
 
Thread: Fly Cutting
25/10/2011 17:22:58
Steve, Looks like a scrap crankcase off a Nemett?
 
Clive
Thread: Can get ME but not MEW?
24/10/2011 17:15:27
Do you have a Smiths Newsagent near you? they get them in if asked.
 
Clive
Thread: Small rotary tables
24/10/2011 16:50:33
If the rotary table is fitted to a Vertical slide then it can go lower that the center hieght.
The vertical slide can be moved forward on the cross slide to facilitate this.
This way treat it as a horizontal milling machine.
 
Clive
Thread: Slitting saw runout
23/10/2011 22:27:38
Surely centricity is a function of the center hole of the saw. Coupled with any error from the arbor and morse tapers or other mounts .
In production and when sharpened before sale they pick up eccentricity.
Are they checked at all?
I have had saws that were eccentric from new, expensive saws, but I have also had others that were fine.
Perhaps the saws should be sharpened on the arbor they run in.
Thicker saws do not give as much trouble but take more power to cut with and then chatter.
 
Clive
Thread: Home Model Engine Machinist
22/10/2011 22:14:30
I can get in as a guest Ramon, did ask me to register!
 
Clive
Thread: Distortion off BMS
22/10/2011 10:01:26
I would suggest putting the cutting line a bit closer to the vice jaws! less stress on the metal.
When I was cutting my bits and pieces I was almost cutting along the vice jaws, it makes cleaning up the metal a lot less tiring when filing.
In fact it states this fact in the book of words for making the loco, I am sure the old boys when making the locos did not waste any effort if at all possible.
 
Clive
Thread: Top Slide Self Act?
22/10/2011 09:54:30
Its a good job you did not have to do that job on an ML10. When I made my plate with the chamfer I could not swing the diameter so ended up doing a backwards and forwards in one small quadrant.
I wore a pair of leather gloves and was swing the chuck backwards and forwards for 4hrs. My shoulders and forearms ached for a couple of days.
I was only just able to make the bars for the body as the lathe bed left little room for length.
My Worden is finished now and a great asset to the tool sharpening.
I made adaptors for all the endmills i have both metric and Imperial. Also for the three fluted cutters.
Well worth making the diamond wheel mounting as well.
All I need now is an adaptor to take my saw bench blades and I will be happy.
 
Clive
Thread: Preventing Rusting in Garage
20/10/2011 16:22:07
I am surprised there is no mention of VPI, Vapour Phase Inhibitor.
If you have delicate tools ie. slips and mics and gauges then a screw on lid drum about 10 gallon size with VPI paper inside it will keep your tools rust free.
Even sealable plastic boxes for food can be used.
Again, acid from fingers etc will start the corrosion off and it will work silently and you will only find it when you use the tool.
Ground surface equipment kept in purpose made storage boxes should be inspected regularly as corrosion will start where the surfaces touch the resilient packaging.
One thing, if you have any optical instruments always ensure they are stored dry and not packed away wet or damp after use.
A lot of optical instruments are sealed in their cases and any trapped moisture will find its way onto the glass surfaces and start fungal growth. I have to deal with on a daily basis where instruments are kept underground and then brought up and put in store but later have to be stripped and de-fungussed, expensive.!
Silica gel. is not a good thing to store with tools as it will absorb moisture from the air unless activated and kept sealed in a container.
Another bad process is soldering in the workshop with a very active flux as the vapour given off will start corrosion on tools and metal surfaces.
 
Clive
Thread: Nemetts 15cc engine
18/10/2011 22:37:24
Roy, was that offer to me? I only live across the other side of the Thames estuary in Kent!
How far is. 'So far away'. ?
 
 
Clive
18/10/2011 19:37:32
Having now seen the Nemetts engine I started looking for plans, dead end it seems as the plans do not seem available!
Where did the plans come from?
 
Clive
Thread: Preventing Rusting in Garage
18/10/2011 09:00:27
Luckily my garage is in the same footprint as my house foundations and has a radiator off the central heating system.
This keeps it dry and warm.
Further to this is the fact that a large mass of iron/metal transfers heat/cold equally, thats physics.
If kept at an average temperature it will not rust. If it is possible to run an extra radiator to the workshop then do so.
If you have an up and over door then seal it as best you can as the rain gets blown in under it!
 
Clive
Thread: Electric motor on my Tom Senior Vertical Head
16/10/2011 20:29:29
I have just looked at a couple of sites with TEC motors and there is one with price reductions based in Sheffield.
Its worth going through some of these sites to see what they are offereing.
 
Clive

Edited By Clive Hartland on 16/10/2011 20:29:51

16/10/2011 16:07:20
Motors with centrifugal switches tend to 'arc' the switch, and over time can stick together.
This happened on my sawbench motor and the end result because it was an obsolete type of double ended shaft model meant a rewind. £225 for that but now right as rain.
Without doubt a field coil problem.
A rewind and a new motor, there is not much in the price so take your pick.
 
Clive
Thread: Square holes
16/10/2011 08:31:15
Yes, thats the one so no need to email to anyone!
 
Clive
15/10/2011 21:56:31
I have a Japanese video of a square hole drill, I dont know how to put it on the forum.
I can send it to someone as an email who can then post it if possible.
Its quite an amazing bit of kit and is shown in slow motion.
 
Clive
Thread: Nemetts 15cc engine
15/10/2011 10:22:05
Roy, what an excellent piece of work you have done! If it looks good then it must be good!
 
Clive
Thread: making a flycutter
15/10/2011 10:19:33
Duncan, why make the fly cutter from Aluminium? You need as much inertia from the tool as possible so it should be made from steel.
The aluminium will not be durable and could well distort around the cutter location.
Particularly when being clamped up hard.
As regards the cutters, buy or obtain some 6mm High speed steel cutter blanks and grind up to suit.
Best bet is search for a set of fly cutters in one of the tool suppliers as they are so cheap.
 
Clive

Edited By Clive Hartland on 15/10/2011 10:19:58

Thread: machining conn./coupling rod ends.
14/10/2011 17:19:05
No Andy, I will have to correct that for you.
If you offer the coupling rod end which you have held in a pivot secured in the tool post with the end mill rotating towards you then start the rotation of the rod end towards you.
This in effect is 'Upcut milling'.
If you were to offer the rod end by rotating it towards the end mill then it will be 'Downcut milling', this is the dangereous way.
Stick to hardened filing buttons as it will be a lesson making them both in turning and in hardening.
With a file you can stop anytime but using a cutter in the collet in the lathe you have to be sure that all will be safe and sure. Again consider the rotary table as you have many crank ends to turn.
They will last a long time and can be used again and again.
I have completed all the motion links and cranks for my Evening Star ( see pic. in my photos) It all rotates without binding.
 
Clive
14/10/2011 09:01:56
The reference to 'Up cutting' means that as the lathe and the end mill in the collet turn anti clockwise then a job like the post asks about is put against the end mill and rotated anti clockwise when you look at it end on.
Try it the other way and it will grab the job and bingo you have no job and maybe sore fingers.
The force of cutting is quite considerable!
This method is quite dangereous and great care should be taken, if you have a rotary table use it!
'Up cutting' term is the same as conventional milling, 'Down cutting' is not normally used on a mill that  has no backlash compensation and  the tool climbs on the job. If its a small diameter cutter it will snap.
 
 
Clive

Edited By Clive Hartland on 14/10/2011 09:08:02

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