Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Page 191 of 270 FirstFirst ... 91141181189190191192193201241 ... LastLast
Results 4,751 to 4,775 of 6729

  1. #4751
    SpinnerRow's Avatar
    Join Date
    Oct 2008
    Location
    Flower Mound, TX
    Posts
    1,371
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


    ORIGINAL: jedijody

    These engines unload 800 - 1200 RPM in the air, slippery airframes unload them the most. Verified by onboard telemetry.
    Well, I guess the little guy was spinning pretty good then!
    \"Hey!!! That tree was NOT there when I took off!!\"

  2. #4752
    a1pcfixer's Avatar
    Join Date
    Aug 2004
    Location
    La Porte, IN
    Posts
    2,505
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


    ORIGINAL: SpinnerRow

    .....................The bearing cage is still in good shape and rolls smooth on the pin. Over-revving it (probably 9000RPM is what it turns)? Not enough oil?
    Probably both!

    Compared to a new roller cage, yours looks a wee bit toasted;






    Jim L.
    Learn from the mistakes of others.You won,t live long enough to make all of them yourself.

  3. #4753

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    The bearing definitely show signs of localized high heat, bands of blue on the rollers.
    Now go outside and play

  4. #4754

    Join Date
    Aug 2008
    Location
    Waterford, Mi/Citrus Springs, Fl
    Posts
    2,750
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    Seems like a lean run would show on the sides of the piston? That one doesn't look too bad.

    Agreed the bearing looks like it's been heated up pretty good, but the much softer rod appears to be in pretty good shape? I would guess from the appearance of the rod, the oil would have to have been doing a pretty good job to keep the rod from frying due to the heat from the needle bearing?

    That leaves only one other option?

  5. #4755
    a1pcfixer's Avatar
    Join Date
    Aug 2004
    Location
    La Porte, IN
    Posts
    2,505
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    And that localized high heat left little if any lube to cool & protect that heat treated pin,
    so it eventually let go.

    I'm not a big fan of high rpm's out a DLE20.
    Jim L.
    Learn from the mistakes of others.You won,t live long enough to make all of them yourself.

  6. #4756

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    Neither is the DLE20.
    Now go outside and play

  7. #4757

    Join Date
    May 2003
    Location
    Sandy, UT
    Posts
    179
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    From a longevity standpoint it's probably wise to avoid high rpm but it is fun to see what the design is capable of. From my limited experience with the 20 it looks like it has the potential for impressive power in the 9-10k range. As it is, the 20 is great choice for average sport flying but I think there is plenty more as long as the engine can be made to hold together.



  8. #4758
    a1pcfixer's Avatar
    Join Date
    Aug 2004
    Location
    La Porte, IN
    Posts
    2,505
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    I must have missed that memo on it being fun to blow $269.00 eng & possibly crash your model doing so. Looks like SpinnerRow missed it too.

    The DLE20 produces it's peak torque around abouts 8400-8600 rpm. An occasional blip into the low 9000rpm range is ok.
    But start actually running them consistantly in that upper range and we see what happens.[sm=thumbs_down.gif]
    That upper range does nothing to produce usable power, but it does increase the heat generated internally, resulting in decreased lubrication, and a damaged engine.

    My first DLE20 is 1 year old and has 6 gallons of gas through it, and spins a Vess 17 x 6 prop.
    Second one is about 8 months old and has almost 5 gallons of gas through it, and spins a Xoar 16 x 6 prop.
    Both use a top notch lube @ 30:1....both still running great!
    Jim L.
    Learn from the mistakes of others.You won,t live long enough to make all of them yourself.

  9. #4759

    Join Date
    Apr 2010
    Location
    Cape Town, SOUTH AFRICA
    Posts
    2,742
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


    ORIGINAL: SpinnerRow

    The DLE 20 I have in my P-51 died today. On a WOT strafing run and it suddenly stopped. Got the plane down safely but the engine is totaled!

    Th crank pin broke. The bearing cage is still in good shape and rolls smooth on the pin. Over-revving it (probably 9000RPM is what it turns)? Not enough oil? Too lean?

    Did you by any chance try a different prop without retuning the engine?

  10. #4760
    SpinnerRow's Avatar
    Join Date
    Oct 2008
    Location
    Flower Mound, TX
    Posts
    1,371
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


    ORIGINAL: TimBle


    ORIGINAL: SpinnerRow

    The DLE 20 I have in my P-51 died today. On a WOT strafing run and it suddenly stopped. Got the plane down safely but the engine is totaled!

    Th crank pin broke. The bearing cage is still in good shape and rolls smooth on the pin. Over-revving it (probably 9000RPM is what it turns)? Not enough oil? Too lean?

    Did you by any chance try a different prop without retuning the engine?
    No, I've been running this prop all season.

    When I put the bearing back on the pin and the pin/bearing into the rod, it rolls smoothly.
    \"Hey!!! That tree was NOT there when I took off!!\"

  11. #4761
    SpinnerRow's Avatar
    Join Date
    Oct 2008
    Location
    Flower Mound, TX
    Posts
    1,371
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


    ORIGINAL: a1pcfixer

    I must have missed that memo on it being fun to blow $269.00 eng & possibly crash your model doing so. Looks like SpinnerRow missed it too.

    The DLE20 produces it's peak torque around abouts 8400-8600 rpm. An occasional blip into the low 9000rpm range is ok.
    But start actually running them consistantly in that upper range and we see what happens.[sm=thumbs_down.gif]
    That upper range does nothing to produce usable power, but it does increase the heat generated internally, resulting in decreased lubrication, and a damaged engine.

    My first DLE20 is 1 year old and has 6 gallons of gas through it, and spins a Vess 17 x 6 prop.
    Second one is about 8 months old and has almost 5 gallons of gas through it, and spins a Xoar 16 x 6 prop.
    Both use a top notch lube @ 30:1....both still running great!
    I like the speed that I'm getting out of the APC 15x10 but I may have to put a Master Airscrew Classic 15x10 on it to put more of a load on the motor. I've tried an APC 15x11 and it lugged the motor down below 8000
    \"Hey!!! That tree was NOT there when I took off!!\"

  12. #4762

    Join Date
    Aug 2007
    Location
    Louisville, KY
    Posts
    1,207
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    cerralvo-

    I have been using a silver jewelers screw driver to adjust my DLE 20's on my B-25 without any problems. A larger screw driver would vibrate off the screws but the jewelers screw driver allows me to adjust the engines while they are running at idle and full throttle. Please fasten your plane firmly to the ground and move slowly and carefully around the prop!!!
    Nothing difficult is ever easy.
    Spitfire Brotherhood #44

  13. #4763
    a1pcfixer's Avatar
    Join Date
    Aug 2004
    Location
    La Porte, IN
    Posts
    2,505
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


    ORIGINAL: SpinnerRow

    I like the speed that I'm getting out of the APC 15x10 but I may have to put a Master Airscrew Classic 15x10 on it to put more of a load on the motor. I've tried an APC 15x11 and it lugged the motor down below 8000
    That -or- a 3 blade prop, and increase the oil mix ratio to 25:1 if you often run up in the higher 9000+ range.

    The cyl walls/piston skirt have a larger area for oil to get splashed onto, so they looked OK.
    The pin on the other hand, is a case hardened part (ie, cheap heat treated), and increased friction in that area
    changes the surface hardness where that bearing rides. Eventually, extended stress causes a few to bail out.

    Hopefully you'll find a better combo of prop, lube mix ratio, flying style, so that your next one lasts longer.
    Jim L.
    Learn from the mistakes of others.You won,t live long enough to make all of them yourself.

  14. #4764

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    At 32:1 fuel/oil ratio there is only 1/4 ounce of oil in an 8 ounce tank of fuel. Running at those RPM is asking a lot from that little bit of oil.
    Now go outside and play

  15. #4765
    SpinnerRow's Avatar
    Join Date
    Oct 2008
    Location
    Flower Mound, TX
    Posts
    1,371
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


    ORIGINAL: a1pcfixer
    Hopefully you'll find a better combo of prop, lube mix ratio, flying style, so that your next one lasts longer.
    Flying style won't change (WOT or Bust!) so I need to change something else.
    \"Hey!!! That tree was NOT there when I took off!!\"

  16. #4766
    SpinnerRow's Avatar
    Join Date
    Oct 2008
    Location
    Flower Mound, TX
    Posts
    1,371
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    .
    \"Hey!!! That tree was NOT there when I took off!!\"

  17. #4767

    Join Date
    Dec 2007
    Location
    Davison, MI
    Posts
    398
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    Hey RBean,

    MAS Prop emailed me a follow up today on our inquiry to the 16x8x3 redesign question.

    Here is the email copy and pasted to this post.


    "Joe,

    Ok, it sounds to me like the 16x8 3-blade with the "4020T" is a prior production model, and the 41 versus 40 refers to diameter in centimeters. We felt for safety sake the high torque gas engines needed a beefed up transition area. We have to balance safety and performance, as you can understand. That said, the 16x8 3-blade generally does well with the DLE20. An alternative is a 16x10.

    Another change with the new 16x8x3 was strictly for pitch measurement. Because of our design, the back of the prop blade doesn't sit flat a prop gauge and people thought we were underpitched because of is. We had a slight re-design so that the pitch could be accurately read.

    I hope this gives you the info you need. "


    I thanked Teresa for her followup and insight. However, your test results suggest a definite change in the way the 16x8x3 performs on the DLE-20.

    I think I still have an older MAS 16x8x3. I will have to dig it out and protect it till needed.

    A few options in the 16 inch 3 blade variety can be found here.

    http://www.valleyviewrc.com/estore/x...ller-16x8.html

    http://www.v-eastonline.com/categori...e-blade-props/

    http://magnumrc.com/3-blade-wwii-war...6x8-p-245.html

    http://www.menz-prop.de/english.htm

    Joe



  18. #4768

    Join Date
    Apr 2009
    Location
    Whitestone, NY
    Posts
    1,797
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    SpinnerRow - do you really run WOT? I rarely do - usually run about 2/3, then might go WOT for a speed pass, but then back off. Which is another reason I was surprised mine broke, like yours did. Maybe I was running too lean, or maybe this is just a defective part, and you and I were some of the unlucky ones. Either way, TH replaced the engine and I haven't had that problem again.

  19. #4769
    SpinnerRow's Avatar
    Join Date
    Oct 2008
    Location
    Flower Mound, TX
    Posts
    1,371
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)


    ORIGINAL: microdon2

    SpinnerRow - do you really run WOT? I rarely do - usually run about 2/3, then might go WOT for a speed pass, but then back off. Which is another reason I was surprised mine broke, like yours did. Maybe I was running too lean, or maybe this is just a defective part, and you and I were some of the unlucky ones. Either way, TH replaced the engine and I haven't had that problem again.
    It's a P-51 - I run WOT and might drop it "some" to land. [8D]

    I also have a DLE 20 in a GP PT-17 with a Vess 17x6. It putts around on way less than half throttle for 20 minutes. An occasional WOT on an upline to do a roll, split S or hammerhead. I'm too afraid the plane would come apart on a WOT flat and level run.
    \"Hey!!! That tree was NOT there when I took off!!\"

  20. #4770

    Join Date
    Apr 2007
    Location
    Easton, PA
    Posts
    1,131
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    Joespeeder,

    Thanks for forwarding the e-mail re M/A prop. Does not really answer my concerns. Next good weather I'll put the new 16-8-3 in a DLE 20 which is broken in and see what the result is in the air. I'll report here. All the other props you listed are good but expensive compaired to Master Airscrew.

  21. #4771
    gazzazh's Avatar
    Join Date
    Aug 2009
    Location
    Springfield Gardens, NY
    Posts
    159
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    Hi All,

    I am having a lot of issues with my 30cc dle engine and EMI...
    I am using an AR7000 RX and Dx7 .. I am getting major interference.. my servos are moving on their own..
    how many ferret rings do i need.. or what should i look for to get this problem solved.

    Cheers and thanks a million

    Happy Landings..
    eat, live, breath RC

  22. #4772

    Join Date
    May 2002
    Location
    Mandeville, JAMAICA
    Posts
    5,958
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    If you are running the engine with the stock spark plug replace it with an NGK CM-6 plug, as the stock plugs are known to sometimes give interference and or running problems. Also ensure that the spark plug cap is pushed all the way down on the plug and over the hex section. HTH.

    Karol
    When inverted always remember that down is up and visa versa

  23. #4773
    gazzazh's Avatar
    Join Date
    Aug 2009
    Location
    Springfield Gardens, NY
    Posts
    159
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    Thanks.. will change plug, and will also wrap ignition in tin foil, shiny side facing in as well as place some ferret rings.. will keep u updated ,,cheers
    eat, live, breath RC

  24. #4774

    Join Date
    May 2002
    Location
    Mandeville, JAMAICA
    Posts
    5,958
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)

    Try my suggestions first before using the foil or f/rings.

    Karol
    When inverted always remember that down is up and visa versa

  25. #4775

    Join Date
    Apr 2010
    Location
    Cape Town, SOUTH AFRICA
    Posts
    2,742
    Gallery
    My Gallery
    Models
    My Models
    Ratings
    My Feedback

    RE: NEW DLE 20cc Gasser! (Data & Links 1st Post)



    I tried a APC 168 on my DLE20 in the Spot On today.
    WINNER excellent vertical performance for pattern

    Much better than the Xoar 16x8.
    Still waiting for some VEss17x6 props to arrive.
    I may try the APC 17x6 in the mean time.



Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
All times are GMT -6. The time now is 02:28 PM.

SEO by vBSEO 3.6.1 ©2011, Crawlability, Inc.