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openspaceman

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Everything posted by openspaceman

  1. I have no bench but my grass is my workshop:I managed to start the sachs dolmar 114 after I posted in another thread. In the absence of a bar chain and clutch cover I have had it ticking over to get the residual oil out of the system. It runs well but with no av I wouldn't be able to use it. Anyone hazard a guess on the age?
  2. Yes but a close up of a twig would confirm
  3. In 1972 I repaired one that had broken a scab out by one of the injector mount pillars with araldite. It was frost damage with no antifreeze. I ground the pillar down so the device that held the injector in only bore on one side, it went to Pakistan in about 1976 at auction when the farmer went out of business. This was a 4 cylinder model. Subsequently I've mended cast with cracks by metal stitching but lost contact with the bloke that did it, last time in the 90s he charged £10 per inch. I've used cast iron rods too but if you don't heat up the area by the weld with propane torch and let it all cool slowly you get a crack develop alongside the weld.
  4. Car ones used to be narrow band, i.e. they switched 1V if they senses any oxygen, the boiler ones were more expensive wide band as they needed to differentiate excess air around 50%, so they gave a signal that would discriminate around 10% O2 in the flue.
  5. Any idea when this was discontinued? Your post reminded me to get out one that was left here for safe keeping 20 years ago whilst the owner had a rest at her majesty's pleasure. I've failed to start it even though it has compression and a good spark. I begin to wonder if the ignition is out as it seems to have been rebuilt just before I got it.
  6. This was the first improvement on free climbing as copied from rock climbers before rope advance system became de rigour. The branches simply replaced the running belays.
  7. Need to take more like 70% to maximise sawlog unless you mean to go beyond the maximum mean annual increment rotation.
  8. My mate was given a 65 that had sat unused for years, he was elated when it started so he railse the linkage and bang the piston broke the top plate as the relief valve was seized.
  9. If they are the same as my 262 ones and you cannot find one locally PM me your address and I'll post one
  10. Everything has got a bit overgrown so difficult to see but here goes:
  11. Anything like these which were from 262s?
  12. You are getting mixed up: Treequip provided the link to the small two stage pumps which I suggested are more suitable for small high revving engines. I expect these engines tick-over at near enough 1000rpm. I had not seen these before although I have seen tandem pumps used to supply two independent loads and it would be simple to rig a power limiting arrangement for such a set up. However you have more than adequate shaft horsepower on the back of a 35x to not need worry about such stuff. Incidentally your 18litres a minute at 200bar is delivering only 6kW to the splitter. The pumps I was referring to are standard throughout the industry, when I was young they were made by Dowty and I still tend to refer to them as Dowty gear pumps. They were made in at least 3 series (1P,2P and 3P) and each series had a common gear diameter, the capacity was changed by lengthening the gear and body. The 2P series were the ones common on a lot of these PTO gearboxes and I have them driven off the nose of the Counties but they are a fixed output per revolution so the only way of varying output is to change engine speed. 1P pumps were often engine mounted for power steering, driven off the timing gears and 3P were typically running flail hedge cutters. As I said there are other means of doing things to get a quicker cycle time out of simple open centre set ups if you want to keep the price down. These Dowty type pumps don't suffer abuse well, so get the oil too hot, over speed them of have a hard duty cycle and they will not last, they also cannot stand cavitation, so sucking cold viscous oil along a narrow pipe kills them in no time, I found that out one freezing day when we fired up the ruggerini power pack for the Trekkasaw. I have a 9 gallon per minute one on an old 1124 that has worked for 30 years yet a similar slightly larger one on a different grapple loader seems to need replacing every 1500 hours or so and this must be to do with something subtly different in the two installations.
  13. openspaceman

    movano

    Check the terms of the warranty, if the vehicle is broken down as a result of a failure under warranty it is usual to be able to claim for a replacement vehicle during the repair on private cars, I've never had a commercial vehicle with a warranty. I gather these have a strange slave cylinder which means a gearbox out to replace any parts.
  14. They are simple single fixed axle conversions, the larger is on decent tyres and based on an an old ford chassis and the smaller one is based on an army trailer, this latter one we used to hand load with 4ft pulpwood before I had a crane so pre-dates 1984. If I visit my brother in law's farm soon I'll take some pictures but they don't compare well with modern kit.
  15. I still have a couple of these I made if anyone is interested, pair of decent flotation tyres on one, they both weigh around a tonne.
  16. If they still sell Moheda drag trailers my 1988 has been faultless and I have extracted 40 ft tree lengths on it with the wheels moved to the end of the pole.
  17. what' s causing the problem is the airflow pressurising the box, much like trying to blow a wine cork into a milk bottle. We used to use chip blower to load brice baker silo. There was a simple cyclone at the top to prevent dust venting with the air. I wonder if something simple could be fabricated with a metal dustbin and a length of flue pipe attached to the top front of the box.
  18. Yes I should have been more accurate in what I said but I think everyone gets the gist, one should not expect to make major changes to machines without consideration of the consequences if something goes wrong. I suffered an accident which was reported under RIDOR by the site owners and HSE took me to task because my helmet, which had nothing to do with the accident, was two years old.
  19. All machinery sold in the EU has to conform to certain standards. When GM built this they will have ensured it conformed to aharmonised level of safety and the height of the discharge will have been designed so that a chip would not be thrown at head level or that a hand could not reach into the chute and touch a movingpart. Shortrn the chute and it may no longer comply. Having said that I know GM will advise on modifications to their machines for special circumstances.
  20. Speak withGM they will calculate the minimum length of spout to stay in compliance with the CE standard it was built to
  21. Brian Harman, still traded under his dad Alan's name but I haven't seen him for a few years A J HARMAN & SONS (BATTLE) LIMITED
  22. Erratum I meant 3 speeds on push and 1 on return.
  23. Interesting little pumps but more for high revving little engines as they stand 3600rpm. Most 2p series pumps which fit on the (typically) 1:3 step up PTO gearboxes are only good for 3000 rpm ( it's worth bearing in mind they need to run at over 1000rpm as they depend on some iternal pressure to maintain the sealing aluminium bushes in relation to the gear faces). Also note the outputs for these two speed pumps quoted is the combined high flow at lower pressure. You can do a similar speed up with a simple single gear pumped open circuit system with a pressure sensed regeneration valve. In fact as I said with a bit of care selecting components you can have 4 speeds on the push stroke and one return speed. In practice knotty stuff slows you down and often produces a log the customer does not like. Never having been able to afford the luxury I suspect a simple sorting table, loaded by a front loader, and a couple of people picking onto either a vertical splitter or a crosscut and split processor processor , with a man and saw cutting awkward bits to length for the splitter would smooth out the flow but how many firewood operations have the luxury of 3 workers?
  24. Any reason for using nylon instead of High Molecular weight Poly Ethylene. I just bought some plastic and the guy suggested it had a lower coefficient of friction than nylon and wore as well.

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