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Member postings for martin perman

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

Thread: Repair advice, please!
27/05/2020 21:33:08
Posted by AdrianR on 25/05/2020 14:34:05:

There is always metal stitching not sure how easy it is to buy the metalock stitches

Could be worth giving them a call.

+1 for this

Martin P

Edited By martin perman on 27/05/2020 21:54:30

Thread: Space X launch
27/05/2020 21:27:23

Launch aborted because of weather, next attempt Saturday.

Martin P

27/05/2020 20:50:12

and the space station, to the right of the moon, if you search SpaceX on you tube to can watch the launch live.

Martin P

Thread: Aircraft General Discussion
25/05/2020 13:30:57

A Lysander passed over at 13:05 heading towards Old Warden Museum, about four miles from me, so I assume it was theirs up for a test flight.

Martin P

Thread: Experimental Vibration Analysis of a WM280 Lathe
25/05/2020 13:23:34

Oops double posting

Edited By martin perman on 25/05/2020 13:24:19

25/05/2020 13:23:11

many many years ago, when the BBC computer came out I became an asssistant to a noise engineer from Lucas Acton to see if we could design and build a system to detect bearing failures in our UVA internal bore grinders which were grinding the 6mm dia bores of the fuel injector bodies, the current method was a visual check of the bores as finish deteriated as the spindle started to fail and when you had thirty machines grinding the bores a lot of work could be lost before it was detected, sensors were fitted to the spindles and the information was fed back to the BBC computer for analysis, the software was written by the engineer I assisted, we spent months running tests on brand new spindles to determine a base line and then monitoring the actual machines to give us information to say that a spindle needed to be changed, it proved a very interesting and successful exercise, when I moved onto another job it was being looked at to fit to other types of machines.

Martin P

Thread: Aircraft General Discussion
24/05/2020 19:53:33

Around 17:00 had a Spitfire/Hurricane pass well north of us heading east, it was quite high, obviously up for an air test.

Martin P

20/05/2020 13:49:55

How about Page then

Martin P

20/05/2020 13:01:14

Thats good, I'm east of Bedford so wuold have been unlikely to see it.

Martin P

20/05/2020 12:40:29
Posted by Buffer on 20/05/2020 10:55:56:

Someone is drawing smiles over Bedfordshire at the moment.20200520_103634.jpg

Which part of Bedfordshire, knowing my luck over my way. not that Ive heard anything.

Martin P

20/05/2020 12:38:30

Or Vicky

Thread: 3 phase cable for a VFD
18/05/2020 09:12:38

When I was working I worked for a company who made large industrial washing machines, side the control cabinet there are two VFD's driving large water pumps that needed to have speed control, because these machines sometimes had to go into already constructed building they came in parts big enough to go through standard doors, when I was let loose on building one of these machines I had problems with the VFD's and other control systems so I contacted our Italian masters and explained the problems, there response was have you connected both ends of the screening on the motor and VFD, answer yes, disconnect the motor end, all the issues disapeared.

Martin P

Thread: Aircraft General Discussion
18/05/2020 08:49:52
Posted by JA on 17/05/2020 23:26:59:

Plasma

The tailplane anhedral is the give away. The nose seems to have grown a chin.

JA

Depends if he has created an American Phantom, they carried a chin under the radar, the 74 sqn F4J's and FGR2's didnt.

Andrew,

I wondered why the skys were busy this weekend, Shuttleworth were testing a radial engined biplane yesterday most likely the Gladiator but it was two far away to be sure.

Martin P

Thread: What are you doing
04/05/2020 10:50:13
Posted by Les Jones 1 on 04/05/2020 09:56:29:

Have a look at this design for a saw table for these band saw that folds out of the way when using the bandsaw horizontally.

Les.

Thanks for that, I found some more aluminium yesterday in one of my sheds so may follow the design.

Martin P

04/05/2020 09:03:23

I decided to upgrade my horizontal band saw, I've had it for about ten years after being given it by a neighbour, it was in a bad state as it had stood outside for several years so I stripped it and got it back to order, it didnt have a length stop or a table for vertical use.

The table is just a piece of scrap 6mm plate and the length stop is made from scrap, the stop is made from a piece of bar and some Aluminium strip, I didnt have any small screws to join the two parts together so I used Gorilla glue and left them clamped together for 24hrs, yesterday I held the stop in the lathe to drill a 12mm hole through the plate, I spun the lathe up to check for vibration and to test the glue and once happy I drilled the hole, very impressed with the glue.

On the long shaft that supports the stop I marked 50mm steps up to 250mm, I dropped the blade down and measured 50mm from the blade and made a shallow hacksaw mark and so on to 250mm then highlighted the marks with permanent pen, this will allow me to cut lengths without use of the tape measure.

Martin P

img_20200501_153230.jpg

img_20200503_124610.jpg

img_20200503_124702.jpg

Thread: Aircraft General Discussion
03/05/2020 18:16:35

Ive, just watched two helicopters cross on the same path and actually merge as one, a friend rang me last week for a chat I commented on how quiet the skys were, he said you must be joking Mildenhall airbase seems to have stepped up the number of flights, he lives in Tuddenham not far from the base.

Martin P

Thread: mamod te1a
22/04/2020 18:46:45

My parents bought me one nearly 50 years ago, it sits in my wardrobe, memory tells me it has to much water in it and when filling there is a screw in the end of the boiler to be removed so that when you fill the boiler via the safety valve the water will flow out off the end of the boiler from the screw hole, when it stops flowing its at the correct level.

Now I must get mine out and running smiley

Martin P

Thread: Delay in dispatch and delivery
22/04/2020 08:33:03

I ordered a metre length of 4mm dia mild steel Friday evening from a company in Blackburn and it arrived by Royal Mail yesterday morning in Bedfordshire, I've ordered other stuff including from China and only had one package get cancelled everything else arrived at the predicted time,

Martin P

Thread: Shoe repair glue advice?
17/04/2020 17:06:17
Posted by John Rutzen on 17/04/2020 14:55:35:

I've always found that cyanoacrylate [super glue] works best for shoe repairs where the rubber sole has come away from the leather . I mend all the family;s shoes this way and they stay stuck. You have to hold the join together until the glue sets.

+1 for this, because of a condition in my feet I have to have shoes that support the whole foot, the inner parts of the shoes are made from a mould of my feet. The shoes have flat soles and after 6 months constant use, I virtually live in them, the soles come unstuck at the heel and toe, I've tried Evostick, which works short term but I find super glue lasts indefinitely, I do clamp the shoe at the repair and leave for a while.

Martin P

Thread: Parkside Electric Spraygun
11/04/2020 20:26:29

Howard,

Is it this one **LINK**

Martin P

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