For Sale Original bd5 650cc hirth engine

Discussion in 'For Sale & Wanted' started by Larrywal, Jan 13, 2020.

Help Support HomeBuiltAirplanes Forum by donating:

Tags:
  1. Jan 13, 2020 #1

    Larrywal

    Larrywal

    Larrywal

    Member

    Joined:
    Jan 13, 2020
    Messages:
    12
    Likes Received:
    9
    Hirth 650cc dual ignition twin carb. With original exhaust. The upgraded hirth 280r that was redesigned for the bd5 in 1973. (Hirth f20 ba1)Has only a few hours on it and was sealed up in climate controlled storage for years. Will obviously need new oil seals at minimum. Possibly more. Appears to be in excellent condition and turns over with what seems to be good compression. Figured that I would try to sell it here first before ebay. Pics coming soon. $2000 obo. Bought from the original owner for my Buccaneer xa but it puts it overweight (I was under the impression that I had a little more wiggle room from the original engine weight but it turns out that It was overweight with the 503 that was on it.)
     
    Last edited: Jan 13, 2020
  2. Jan 13, 2020 #2

    Victor Bravo

    Victor Bravo

    Victor Bravo

    Well-Known Member

    Joined:
    Jul 30, 2014
    Messages:
    6,583
    Likes Received:
    5,360
    Location:
    KWHP, Los Angeles CA, USA
    See... See... Jim promised the engines would be shipped and this guy finally got his engine :)
     
  3. Jan 13, 2020 #3

    Larrywal

    Larrywal

    Larrywal

    Member

    Joined:
    Jan 13, 2020
    Messages:
    12
    Likes Received:
    9
  4. Jan 13, 2020 #4

    Larrywal

    Larrywal

    Larrywal

    Member

    Joined:
    Jan 13, 2020
    Messages:
    12
    Likes Received:
    9
    Lol I was waiting for this comment.
     
    MadRocketScientist and bmcj like this.
  5. Jan 13, 2020 #5

    Larrywal

    Larrywal

    Larrywal

    Member

    Joined:
    Jan 13, 2020
    Messages:
    12
    Likes Received:
    9
  6. Jan 16, 2020 #6

    Armilite

    Armilite

    Armilite

    Well-Known Member

    Joined:
    Sep 6, 2011
    Messages:
    3,191
    Likes Received:
    275
    Location:
    AMES, IA USA
    ====================

    Just curious, what was the HP@rpm for this 650 Hirth? What was the difference in Weight between your 503UL and this Engine?
     
  7. Jan 19, 2020 #7

    Larrywal

    Larrywal

    Larrywal

    Member

    Joined:
    Jan 13, 2020
    Messages:
    12
    Likes Received:
    9
    From the information that I got. I have heard 55hp from some sources and 60hp from others. The hirth mechanic told me that the dual carb and dual ignition engine is a 65 hp engine derated to 60hp for aircraft use but I have read old bd5 literature that keeps referring to the "55 hp hirth". But that could be the single ignition model. Basically not 100 percent sure but 55-60. I don't have the exact weight but I can tell you in a few days when I get home. It is more than the 503 but that is with exhaust and it also has the electric start.
     
  8. Jan 23, 2020 #8

    pfarber

    pfarber

    pfarber

    Well-Known Member

    Joined:
    Feb 21, 2019
    Messages:
    436
    Likes Received:
    35
    Location:
    Pennsylvania
    Wow cool find. I'd never get into a BD-5... well. fit is probably the correct word :D
     
  9. Jan 23, 2020 #9

    BoKu

    BoKu

    BoKu

    Well-Known Member HBA Supporter

    Joined:
    Aug 16, 2013
    Messages:
    2,476
    Likes Received:
    3,195
    Location:
    Western US
    Larrywal likes this.
  10. Jan 24, 2020 #10

    Larrywal

    Larrywal

    Larrywal

    Member

    Joined:
    Jan 13, 2020
    Messages:
    12
    Likes Received:
    9
    Thanks!
    I agree but I have a few people that are interested in it. One just bought a bd5 and the other has one that him and his father built that has been sitting for years. So hopefully it will get a good home and go towards its intended purpose. I am selling it to help fund a new Hirth f23 otherwise I would love to donate it to a museum. It is a really beautiful engine.
     
    BoKu likes this.
  11. Jan 24, 2020 #11

    lr27

    lr27

    lr27

    Well-Known Member

    Joined:
    Nov 3, 2007
    Messages:
    3,555
    Likes Received:
    536
    Weren't there significant problems with that engine when used in a BD-5? (My impression was that it might be just fine in other aircraft. Or were those problems solved, but too late to save the BD-5?

    I'd be willing to sit in a BD-5 and use it as a go kart.
     
  12. Jan 24, 2020 #12

    Larrywal

    Larrywal

    Larrywal

    Member

    Joined:
    Jan 13, 2020
    Messages:
    12
    Likes Received:
    9
    There were problems with the 440 Hirth. The Hirth BD5 with the 440 was underpowered. I don’t know the whole story about Hirth but they supposedly shipped 500 of the engines and then went bankrupt before they could ship any more. I was told that they lost some of their snowmobile contracts but I wonder why they wouldn’t make more of the engines that people were waiting to pay for.
     
  13. Jan 24, 2020 #13

    Victor Bravo

    Victor Bravo

    Victor Bravo

    Well-Known Member

    Joined:
    Jul 30, 2014
    Messages:
    6,583
    Likes Received:
    5,360
    Location:
    KWHP, Los Angeles CA, USA
    OK Matthew, that's your cue... 21st Century BD-5... :)
     
  14. Jan 25, 2020 #14

    pfarber

    pfarber

    pfarber

    Well-Known Member

    Joined:
    Feb 21, 2019
    Messages:
    436
    Likes Received:
    35
    Location:
    Pennsylvania
    I think the main issue was the long torque tube, not the engine... well the engine could also be an issue.

    I see a LOT of BD-5 kits or partially built airframes for sale. I don't think people realize how small that little bugger is. Its unique... and a rocket.. but just not a practicle airplane.
     

Share This Page

Group Builder
arrow_white