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doug72

Eurobricks Dukes
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Everything posted by doug72

  1. doug72
    I have two but only use them as "ballast" counterwieght boxes when building cranes to remain Lego Legal.
  2. doug72
    Once its completed and working OK will post it. One thing with being on a studded base plate its easy to alter positions of of supporting legs to get correct heights & alignments etc.
  3. doug72
    PV Productions now have Ver 4.0 now available to download for free if you have already purchased previous versions. So far can only determine that the order of building has changed. Shame as I had already given up building this after several failed attempts to get the Ferris Wheel to work, found the ferris wheel was very prone to flexing and jamming. All the other modules worked well. Now all consigned to my spares boxes. --------------------------- Currently building a revised version mounted on a 48 x 48 Lego base plate which provides stability to the whole structure. This will use varients / adaptions of the PV modules apart from the ferris wheel which will be replaced by a vertical lift module which I had previously devised. The auto change over module will my own design and provides two c/o outputs plus another output for the chain conveyor, currently using the new driving ring and 3L sleeve with ribs, works OK but will be even smoother c/o once get some 3L axle extensions. All driven by one L motor. Just have one more inter-module link and ball loading to vertical lift to devise and will be ready for testing.
  4. doug72
    Nice compact gearbox - well done. I like compact gear mecanisms and the challange when building them. Video instructions are very clear and I will certainly be building this. The Technic ball with through axle hole is readilly available on line, just checked Brickowl at £0.03 each An alternative would be to use the normal red change over lever with it sliding back and forth between driving rings via a gate.
  5. doug72
    Possible missing connection between parts: I have re-built to turntable change over unit as per Ver 3 pdf. On page 14 step 27 a 3x 5 angle beam is added which two axles pass through the 3L section, cannot see if there should be connection between vertical part and the horizontal beam. see 2nd. image- black arrow points to missing connection. I have made a firm connection between the two beams usings black connector pin with hole and a 2L pin w/axle bush to join these together. Result unit doesn't flex so much when the gears change over. 3x5anglebeam by Doug Ridgway, on Flickr Change-0ver-unit by Doug Ridgway, on Flickr I have checked the the building instruction lxf file and it also does not appear to show a connection at this point. Have I missed something ?
  6. doug72
    No hurry, thats the cheapest from a UK store - I planned to put an order together from Lego in Feb. as I need several other parts I'm short of. Then compare cost to get best value / delivery. Hope the new worm & the 3L axle with hole are available by then.
  7. doug72
    Thanks for that info & part number. They are available on Brickowl at £0.80 each and I will be ordering a few soon.
  8. doug72
    Didn't buy that set but looking at the on line instruction parts list, it indicates part 6100932 which is a ribbed 3L white shifter. Needs a 3L shifter without ribs. Do you have a part number for the plain version without ribs ?
  9. doug72
    If there were such a piece would be great. Can't locate one on Brickowl - maybe someone else knows if it exists or due to be released. An alternative would be to remove the two small catches from the grey driving ring, (in the middle section) so they don't engage with the ribs on the white 3L gear shifter.
  10. doug72
    This is the mount I use to hold my Canon Power Shot A2300 camera. IMG_4255 by Doug Ridgway, on Flickr
  11. doug72
    Glad yourballs have arrived ! I will be ordering mine soon. Totally agree with your comments. As I am not building this solely with parts from the crawler crane I have been modifying ball runs etc. to prevent balls skipping off or jamming. see image showing ball guides between tipping arms along ramp to ferris wheel. (ferris wheel unit currently removed) IMG_4252 by Doug Ridgway, on Flickr Also to prevent the change over mechanism from imparting jerks to the drive train I have developed a C/O unit with stepless motion, and strengthened the structure whilst keeping input / output axles the same. This uses the old Red driving ring with a plain 2L sleeve for it to slide over. IMG_4253 by Doug Ridgway, on Flickr IMG_4254 by Doug Ridgway, on Flickr I have yet to install this but testing with a M motor it runs very smoothly dispite the odd linkage to the red c/o lever and without any flexing of the structure. All gears same as per original unit but configured differently. Tested with linear slipping clutch and T/T motion OK and puts no strain on the drive. Next step is to re-build the ferris wheel to see if can get this performing consitently.
  12. doug72
    Don't anticipate wear for the amount of time it will be running. The chain glides quite freely over the gear quadrants, the large lego chain links are made of a slippery ABS plastic not hard like the 5L wide track links. The tension on the chain is just sufficient so that the ball lifters enter the loading point at the correct angle.
  13. doug72

    Older Than Dirt!

    doug72 replied to Andy D's topic in Community

    Andy D Hi. Doug72 here aka "Doug on the Tyne". I turn 70 yrs in March and have been a Tecnic builder ever since being given the 8725 Bulldozer when it first came out. Retired in 2001 after serving as a Marine Engineer for 35 years - final 10 years as Chief Engineer of V/ULCC. Other hobbies are Volunteer Ranger on the UK National Cycle Network, the 72 refers to the Hadrians Cycleway Coast To Coast route that ends where I live in northern England. How do I get the "Older Than Dirt" badge ?
  14. doug72
    Thanks - the GBC module is being rebuilt after a spectactular disintergration when the chain jammed. Mk 2 now being built learning from the issues with the Mk 1 version. Ball laoding now much better and lowered to 1L above the base plate. Improved discharge still to sort out. Re Older Than Dirt Club:- Will take a look, I turn LXX in March. I got into Lego Technic when I was given the 8275 Bulldozer as a Xmas gift from my familly. Doug72.
  15. doug72
    Thanks for the comment - the studded technic parts come from Lego sets 8094 & 8069 were Xmas present to my Grandson many years ago, who passed them back to me when I got into building Lego in my retirement. I use studded beams to connect studless technic onto base plates. Made some improvements to my MOC: Added a jocky wheel to tension the chain, built an improved the loading hopper and added some guide beams position the lift arms as the chain moves.
  16. doug72
    Which instruction version are you using ? See instruction page: Ver 1.pdf: page 85 step 25 Ver 3.pdf: page 13 step 25 The plain 2L sleeve in the middle of the drive from change over unit out to turntable acts as a slipping clutch. ------------------------------------------------ I have been building this using spare parts not parts from the crawler crane. So far manage to get 3/4 of the machine working. I cannot get the ferris wheel to work, the grab arms keep fouling various other parts and is rotation is very jerky. Every time the change over driving ring shifts from one position to neutral and then other position the motor strains and imparts to a jerk to the whole drive system. With the older RED driving ring you could remove the 2L sleeve with ridges and replace it with a plain 2L sleeve which gives amuch smoother c/o. I have used this with success on two GBC lifts I have built. A plain sleeve is not possible with the GREY driving ring, tried a 2L plain sleeve with 1/2 bushes each end to get 3L length but the 1/2 bushes don't enter the end of the driving ring. It would need a complete re-design of the change over gearing & output to be able use a Red driving ring.
  17. doug72
    Having used 12 pce BWE gear qaudrants for two other MOC's I had two left over. These have been used as support guides for a ball lift module using the large Lego Chain links which have studs Clearances for the lift arms is tight but with carefull setting up works well, still some work to do to improve the ball loading hopper which is too high at present. IMG_4244 by Doug Ridgway, on Flickr IMG_4243 by Doug Ridgway, on Flickr Video:
  18. doug72
    The Mk 2 bucket wheel lift has been linked up to my "Drag & Tilt" module on one base plate with a new conveyor linking the two modules. IMG_4236 by Doug Ridgway, on Flickr I now have 10 pce White Visors from the Mk 1 bucket wheel looking for a new build. http://www.brickowl.com/catalog/lego-visor-2007-57702 I have thoughts on using these for a vertical or incline GBC stepper module. Struggling to find way to achieve this. Has anyone ideas on how this could be achieved ?
  19. doug72
    Why not just use a standard 24T gear which is designed to fit that part ! Use an 8L axle with stop through the hole at the other end to secure the 24T gear in place, giving you a 2L section of axle protruding to secure to the next part of your build.
  20. doug72
    See this post which shows differentials in opposing positions when using 28Z differentials. Unit is a flat version of that shown in Sariels guide book. Images showing subtractor unit fitted to my Mk 2 Fowler 80hp Gyrotiller. Gives excellent slow speed turns and turns on the spot at both fast & slow speeds. Underside showing subtractor unit which uses 16/24T differentials. IMG_4232 by Doug Ridgway, on Flickr Gear change over lever for 2- speed unit for the L motor. IMG_4233 by Doug Ridgway, on Flickr
  21. doug72
    Yes it is possible with only one driving ring - see this post: I have built one into my 80hp Fowler Gyrotiller which has a fast 1:1 ratio and slow 3:1 gear ratio's. My moc now upgraded to a Mk 2 version with improved subtractor. I will post a picture of the underside later.
  22. doug72
    There was a thread about this some time ago when it was first spotted. Trouble is the old type is still shown on the Power Functions section of Lego's website !
  23. doug72
    Photos of new improved bucket wheel GBC lift using new gear rack quadrants:- Oblique view: IMG_4225 by Doug Ridgway, on Flickr Loading side view: With wheel rotating clockwise the balls enter the buckets at 7:00 o’clock. Wheel rotates and balls falls out of bucket at 1:00 o’clock and rolls down along rim to sit on back of preceding bucket. At 4 o’clock balls drop from wheel onto discharge track. IMG_4223 by Doug Ridgway, on Flickr Motor side view: showing motor/gearbox with battery & PF switch interlocked to prevent wrong way rotation. IMG_4224 by Doug Ridgway, on Flickr
  24. doug72
    The previous built up bucket wheel made from connectors and axles was prone to flexing and connectors coming apart so an improved version required. Currently working on a new improved bucket wheel GBC lift using four BWE gear quadrants (6151167) for a single ring gear, which makes for a sturdier structure with smooth rotation. The bucket wheel is driven by an M motor with 24:1 reduction to a 20T double bevel drive driving the gear ring at 7:1 giving an overall 168:1 reduction. The 8 buckets for carrying the balls use LEGO Dark Stone Gray Beam 3 with Large Ball Socket (92911) The ball release trip mechanism is the same as previous BW but constructed using studless technic parts with a threaded lego 4L axle to allow adjustment. Almost perfected the ball transfer onto and off the bucket wheel. Will post images / video later.
  25. doug72
    Thanks for the comment - have you seen my other GBC lift which uses elastic cord instead of a chain and an auto reversing drive ? See last post for video.
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