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Chris Dowell

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Everything posted by Chris Dowell

  1. I can now tell Steve why the model is not able to be disassembled .The hidden carbon shaft's in the boom and mast 'should " handle any prangs' ?..we that's my theory.....could be wrong.? Chris...
  2. You may want to consider fitting wheel pants to your U/C to help with orientation possibly in a contrasting colour to the rest of the model...works for me . Happy Landings Chris...
  3. Max if you go back to page 19 on the 20-11-19 .. I posted a video of the ROG of this model. It's not the best video ,but It may help you . Happy Landings Chris...
  4. That's a fine looking model that you have Max and I can see that you have spent a lot of time on this project.You will find that is very handy if you have a way to accurately measure the "angles " when setting up an autogyro. I am sure you will be aware that there are some good "apps' for this. I have to agree with Steve's opinion that is assuming that picture 1 has been taken with the radio 'on" and the sticks at zero. I have found that 5+ is a good starting point to set up the head...and by 'eye balling " you picture ..it's looking more like 10+ so I can understand you telling us that the blades spun up easerly as it was acting more like a windmill with I'm guessing you pulling even more back tilt to try to lift. So I guessing that it may have lifted pretty steeply ,surprising you and causing you to loose the model .When it comes to the hang angle 15-16 is the minimal safe hang angle ...but I have flown models with up to 20 deg hang with no problems. Happy Landings Chris...
  5. Trevor I do agree that the balancing of blades in pairs or the using of a heli balancer are both very good methods although It does appears to me that we consistently see questions from those just getting into this side of the hobby ,that is completely different to what the may have encountered previously. So showing , sometimes is easier than telling. I still believe that balancing as one unit takes out all the variances that may creep in regarding differences in bolts, washers ,packing that may have an influence on the final balance . I know that Rich had a video for balancing in pairs many years ago ...but I cant find it. Happy Landings Chris...
  6. Thanks again for the posting Rich. I'm sure some of you will have found it very boring....but it was made to show those amongst us the fact that the entire head/blade assembly has to be balanced as one unit. I have come across several modelers that had only balanced the blades individually . I also made it to show that you can be chasing your tail to get a good balance .The unit I use is a DUBRO 499 that is very sensitive to any variations. Happy Landings Chris...
  7. Yes Tim … I always do all the initial balancing along the center line. Its only when using a prop balancer on its final balance that I add the tape to the tips ...at this stage ..I believe that the tape will not effect the final set up.,and my head assemblies always run true. I have also used the heat shrink tape that you mention.it makes a very quick and sturdy skin to the blade....although ...just a little heavier than film and care must be taken by not applying to much heat as the T/E may be vulnerable. Chris...
  8. Unfortunately I have always had problems adding my videos to this forum BUT if you were to go to my you tube channel " britinozoz" you will find plenty of autogiro clips and there are two on balancing the head assembly .I think that the more recent one "balancing the C30 " may be the better of the two. I think there may also be a couple of videos of this particular model. Happy landings Chris...
  9. Even when all blades have been made to identical weights ...you will find that the entire head assembly has to be balances as one unit. This usually requires small strips tape to be added to the tips of the lighter blades . This is a critical part of the set up. Chris...
  10. The rotor speed after landing can on some accessions, if not corrected immediately cause the model to be very unstable and even lift or be pulled violently to one side. So when its back on the deck facing into the wind, it may be prudent to push the head full forward. Good luck for your maiden and Happy Landings. Chris...
  11. NB These are the blades as used on my model in the videos that I posted on 20.11.19 of this thread. Chris...
  12. Ok here are my blade weights. 445mm X 55mm hand made balsa blade with 8 gm coin in tip covered with heat shrink tube (as used for lipo packs) is 37 gm Complete assembly including try plate, bearings assembly and bolts... Grand total of 154 gms This works OK for me. Happy landings Chris...
  13. Very nice Rich.... I watched the full video of you flying last weekend. Must be a good feeling to see so many autogyros in the air and even better to know that you designed quite a few of them. I would fly with you and Rich E but three great models in the same air space...that's just too much of a good thing. Happy Landings Chris...
  14. I have to agree that it fly's pretty true, straight off the board. Nice work Malcolm. Chris...
  15. I'm pretty sure that wheel pants would help orientation with all models. Chris...
  16. Trevor This is usually a symptom of the main wheels being to far to the rear of the model. It stops the model from pivoting. I have had the same problem on several models. When the model finally does come unstuck .it can be found to jumps into the air almost vertically and can be a handful. I would suggest that you bend the U/C to get the wheels further forward. Chris...
  17. Rich...larger version?? did you not publish the larger version...?? Chris...
  18. Rich Thanks for posting .No, not one at a time ...there are eight flyers permitted to attend the field for any morning OR afternoon session. but it was nice to have it all to myself...glad you like the stab....was bit rusty with the ROG Chris...
  19. Well today was my first flight in about eight weeks and I must admit that I was a little rusty...as I had expected but did manage to get a video of the flight showing my modified stab. If I ask Rich very politely ..he may even post the video for cos I have a prob on this site. Happy Landings Chris...
  20. Just me ..I new that...………… always is... Chris...
  21. Rich looks like you have a bit of a problem there ...I think that one of the blades has come off I see the first pic ..but no video just me I 'spose Chris...
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