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  2. Ferret Brakes and Silicone Brake Fluid

    Wow! That pretty much settles that!
  3. Ferret Brakes and Silicone Brake Fluid

    I have not got the original notice from Lockheed to hand, but got the following transcription off another website: Reproduction of a warning note from AP Lockheed on problems with silicone fluids in braking systems Silicone brake fluids - beware Our technical service department is receiving an alarming number of calls from motorists reporting problems with silicone fluids. AP Lockheed neither markets such fluids nor recommends their use with our own or any other braking system. Virtually all the problems relate to long/spongy pedal, sudden loss of brakes and hanging on of brakes. They reflect certain properties of silicone fluids identified by us over many years and recently ratified in SAE publications, namely high ambient viscosity, high air absorption, high compressibility, low lubricity and immiscibility with water. Research has shown that the relationships between problems reported and properties identified may be expressed as follows: Long/spongy pedal o Compressibility, up to three times that of glycol based fluids. o High viscosity, twice that of glycol based fluids, leading to slow rates of fill and retention of free air entrapped during filling and hence bleeding difficulties. Sudden loss of brakes o Air absorption - gasification of absorbed air at relatively low temperature produces vapour lock effect. o Immiscibility (failure to mix) with water - whilst the presence of dissolved water will reduce the boiling point of glycol based fluids, any free water entrapped in silicone filled systems will boil and produce vapour lock at much lower temperatures (100C or thereabouts). Hanging-on of brakes o Low lubricity - in disc brake systems the sole mechanism for normalisation if system pressure upon release of pedal pressure is a designed-in tendency of seals to recover to their "at rest" attitude. Low lubricity works against this tendency. o High viscocity, exacerbating the above effect. It should not be assumed, therefore, that the high price of silicone fluids implies higher performance in hard driving or even normal road use. AP Lockheed glycol based fluids do not contain the adverse properties described above. The recently introduced Supreme DOT 5.1, which exceeds the performance criteria of DOT5, is suitable for all conditions likely to be encountered in modern driving conditions.
  4. Ferret Brakes and Silicone Brake Fluid

    The notice from Lockheed would be great to see. Others in our local MVPA club are restoring an M8 Greyhound with both hydraulic clutch and accelerator. They too used silicone and are having nothing but grief. That issue may well be related to David's comments as the diameter of the lines are quite large. We even tried to power bleed the brakes on the Ferret with no noticeable difference.
  5. For Sale Rubery Owen Field Office

    Now sold , thanks for the interest.
  6. WW1 Thornycroft restoration

    Well, it is painting, painting and painting. Dad is pressing on with it and now has the first top coat on the inside and outside of the bonnet. He has also painted some steel for the nuimber plates and primed the 'pyramid nosing' so kindly provided for us by Mark and delivered by David. Many thanks for that chaps. It is exactly what I wanted! I wasn't expecting to be able to get that on but we should now, with a bit of luck. The next kill-or-cure obstacle is to braze up the propshaft, the project for this weekend. Everything is crossed for this one! Steve
  7. Dodge D15T

    This is for all of you out there with a rubber fetish Nige if your lurking this is just for you This is one of a pair of tires on the back of the truck and may well be original factory fit for the vehicle the date is right and the amount of ware could be right for the recorded mileage. Points to note: they are Goodyears made for British wheels Made in Canadan synthetic (that's what the red dot means Couple of photos fill your boots chaps Pete
  8. Dodge D15T

    Plain carbon steel much less of an issue Pete. Getting nice shiny ones the right size and shape for the civilian fronts is no fun.
  9. Dodge D15T

    Good call Gordon particularly as I've only managed to save a couple of the original ones. However you got me thinking and a poke about in the ''box of stuff under the bench that might be useful one day'' turned up some very ancient tiny Whitworth coach bolts the head size and shape is almost identical to the originals but the shank is a bit large but I think they'll do the job I'll just have to cut a bit more thread into the shanks and trim them to length. Pete
  10. Phil. It is ace mate, I love to read the updates. Best wishes Dave
  11. Royal Enfield WD/L project.

    If there was a very small batch ordered of any bike in ww2 for the WD there would still be a record and contract. Seeing as even experimental bikes and a few test samples were still recorded on contract, i.e. the RE lightweight 350 then I would say someone has got confused. Also the yanks would have used the Harley or Indian chief or even a jeep No way would they buy British, they wouldn’t even buy the RR Merlin, they made it them selves under license. Could it be an Indian Chief motorcycle that the owner has confused with Enfield India now called Royal Enfield???
  12. Bedford MWC restoration

    Thanks Richard that helps and that little countersink in your panel ties up with what I see on one of my panels as well. The other doesn’t have any nail holes at all; hence my confusion. Better see what’s on offer at B&Q......
  13. Hi Simon Just had a very close look at the nail holes. They do have a small countersunk section, the hole size is 18swg (1.2mm). I definitely took out flat head round nails. The small countersunk is presumably to allow the nail head to be less raised. At one time you could by “hidden head” nails, these had a small countersink on them. The only ones I can find at the moment are much too big a diameter or small copper ones used for boat building.
  14. Hi Simon These photos should help Preety sure they are 1" nails and round head No.8 slotted countersunk screws Don't know why the photos are inverted or on their side Cheers Richard
  15. Bedford MWC restoration

    Hi Richard, how do you intend (if at all) to secure the metal cab sides to the wooden framing across the top and down the front edge behind the door capping. I am refurbishing the back half of the cab at the moment, and on the evidence of what I have found during the strip down, it could be panel pins, csk screws or nothing at all -and that’s the evidence from just one side.
  16. Ferret Brakes and Silicone Brake Fluid

    Some years ago Lockheed issued a statement against the use of silicon brake fluid and they listed a number of issues that occur when using it. I recollect 'sponginess' of the pedal was one problem. I have never used it.
  17. Ferret Brakes and Silicone Brake Fluid

    It has been suggested that it is much harder to bleed brakes when using silicon fluid as it tends to move around bubbles of air instead of pushing them along the pipe in front of it. Presumably to do with surface tension. I think this is more of a problem with vehicles with larger diameter brake pipes than with modern cars that have 5mm OD pipes. I think if the silicon fluid had swelled the cups they would either have not sealed or would have jammed. You seemed to be describing the feel of brakes that still needed bleeding (although you had bled them). David
  18. Hi Jeremey They are tapered, and the correct size. You did send me the details of the company that made them for you, but they never responded to my request for quotation. I thought that they may be folded in the corners and spot welded, but have seen later versions that have been seam welded, not a 100% sure if these were original or repaired. All in all still very pleased with them, I will be drilling small drain holes in corners, plus punching the large drain hole.. Just ordered a load of metal, for floor pan, internal bin, door skins etc.etc. So loads of metal bashing in the next few weeks.The plan is to get all this loosely fitted before the bulkhead goes away for final grit blast and etch prime. When back at the "shed", I will do the final bit of 'fettling' to get it all fitting really well. The hoop sticks (1" OD 10swg), rear mudguard supports and spare whee (1.5" x 0.2" angle iron) will be fun to bend into shape (watch this space....)
  19. Ferret Brakes and Silicone Brake Fluid

    I have always been advised never to use Silicon fluid in my Dodges. There was discussion at the time wether this was relevant. . You seem to have answered the question.
  20. Dodge D15T

    With engine numbers you get what you get Pete. As a further wrinkle it is relatively common to find a military or civilian truck engine rebuilt as an Industrial engine, or vice versa. I have a T116 stamped one ton engine in the garage which has a Chrysler Industrial plate on the side. If it is a period long block engine, expect it to be the standard 236.6 cu in ( The Canadians were much less prone to mucking about with engine capacities than their US cousins ). The casting number could be interpreted but don't have that info. Look on the side of the block under the distributor for a date. Early engines had month/day/year, later engines just had month/day, but worth a check. It is impossible to get direct replacements for those trim bolts. You can get 1/8" stainless coach bolts but the head is more domed. On plain painted steel trim you probably want plain carbon steel coach bolts, 1/8" I think, but you may want to reduce the 'dome' a bit.
  21. Fuse Box No.5

    I am looking for a couple of CAV fuse box no.5, mainly the bases, PM if me if you have a spare, Thanks Andrew.
  22. Hello, Those of you who have read my prior post regarding the restoration of 00CC78, know that I spent considerable time and money rebuilding the brake system on my Ferret. The master cylinder was re-sleeved in stainless and everything else was rebuilt other than the metal brake lines - they were flushed thoroughly. The brakes never worked properly since the rebuild - they were soft and never built up pressure. After a couple more bleeds, we dissembled the master cylinder, honed the stainless sleeve and machined the piston thinking that it wasn't moving far enough to allow the fluid to pass from the cylinder into the system. Still, no improvement. Finally, we removed the silicone brake fluid, replaced the master cylinder cups and added dot 4. Everything now works great. Epilogue - we suspect that the silicone brake fluid swelled the rubber cups in the master cylinder and it would get 'hung up' and not allow the fluid to flow through. Has anyone experienced any similar issues with silicone brake fluid? Darcy
  23. Phil. Thanks for the info. Doing a bit of a web search onwards from the address you supplied reveals that felt isn't just felt apparently. There is wool/blend or polyester to decide as well a grade (density). I would assume the original was wool, but polyester may have its advantages as it would be less likely to retain moisture than wool. Always learning. Thanks Doug
  24. Hi Robin & Doug. Luckily some of the items I was working on I could use a sharp blade to slice it off. Then left it soaking in hot soapy water for some time. Rinsed, dried and re glued in place. I did however source felt here in New Zealand from http://feltsupplies.co.nz/. It is about 10mm thick and I have used it in the hull under where the likes of the driver's periscope sits. Unfortunately it wasn't cheap and they sell per metre. Owner found an off cut for me so I was very lucky. If you do see what you need there I am happy to help getting it to you. Regards Phil
  25. Last week
  26. Dodge D15T

    Excellent well done Matt thanks, that was the information I was missing I should be able to find out the model and cu inch now in case I need to source parts from the states if it's an industrial unit it will probably have Sodium filled valves another plus point, it may be a larger cu inch than the original engine which would be a bonus if that's the case Pete
  27. Dodge D15T

    Sorry Pete our replies crossed. The replacement engine is, as you say a long block. I'm told it was removed from a 1950's Clarkston tractor which came from USAF disposal at RAF Molesworth. Being from a Clarktor it will be a Chrysler industrial unit. The carb, manifold, born, air cleaner and oil filter are all from the original engine though.
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