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17 Comments

  • Gregg Ludwig
    by Gregg Ludwig 3 days ago
    High powered tug trike with BMW R1200 fuel injected engine.
  • Leo Iezzi
    by Leo Iezzi 3 days ago
    Very nice!!
  • Scott Williams
    by Scott Williams 3 days ago
    Really cool Gregg! My GTE repower with a R1150 starts this weekend with pulling my old 582 grey head off.
  • PHILIP QUANTRILL
    by PHILIP QUANTRILL 3 days ago
    Very nice. What was the cost to move over to BMW ?
  • Paul Hamilton
    by Paul Hamilton 1 day ago
    Gregg, Clean installation. More or less power/climb than the 912S? Claimed HP? Have you compared?
  • Gregg Ludwig
    by Gregg Ludwig 1 day ago
    Now there's some good questions, better than "how much does it cost." The R1200 engine is rated at 110hp at 7,750rpm. I have the engine derated with the prop pitch to 6,500rpm so that would be about 100hp. Next time out I'm going to adjust it to 6,700 rpm. The trike aerotows beautifully with ample power and proper airspeed for the hang gliders.
  • PHILIP QUANTRILL
    by PHILIP QUANTRILL 1 day ago
    I am sorry Gregg, I will try and formulate questions more fitting of your status in future. I thought a reasonable question would have deserved a reasonable answer.
  • Paul Hamilton
    by Paul Hamilton 16 hours ago
    Yes Philip we need to send Gregg to sensitivity training along with Larry, Abid and perhaps myself :-)

    It is hard to put a cost onto something like this because all the research, trial, error, parts that must be scrapped/reworked and engineering/figuring it out can be much more costly than the actual parts. So a cost on a project like this is a tough one to quantify. It seams like any simple trike job, and this is a complex one, takes more time, money and effort than you think.

    I am going to guess that decreasing the pitch to get 7750 RPM at will not produce that much more "thrust" at wide open throttle WOT.
  • Gregg Ludwig
    by Gregg Ludwig 16 hours ago
    You got that right Paul. This is the third muffler system and a keeper. Second oil cooler as the first one was too small. This Setrab cooler was $800. Interesting that this alternator is rated at 60amps where the Rotax 912 alternator is 18amps. The engine redline is 8,500 rpm with max rated hp on a motorcycle is at 7,750 rpm. I have it propped now at 6,500 which works well and you are likely correct that more prop rpm may not increase performance much. It has been a fun project.
  • Abid Farooqui
    by Abid Farooqui 15 hours ago
    I failed sensitivity training. It had something to do with possibly seeing roughly 700 people getting killed around me on a random terror shooting when I was 17 or my father getting shot and bleeding to death after freshman year when I was not even 19 in the summer. So when I hear some whining, from my perspective, I say get the heck over it. Just saying. Now for Larry, Paul etc. I don't know why they are so insensitive :)
  • Patrick Crofton
    by Patrick Crofton 13 hours ago
    Abid,
    Many of us have been in various situations in life and have lost family and friends. Your losses we can understand and are with you on this.
    Obviously, Paul’s comment struck a soft spot in regards to “sensitivity training”.
    Your comment referenced “So when I hear some whining, from my perspective, I say get the heck over it. Just saying”.
    Yep, I think a lot of are with you on the stop whining. I thought this thread was about strapping a BMW 1200 on to the Ass of a trike and what the $$ (estimated) would be?
    Just saying…
  • Abid Farooqui
    by Abid Farooqui 10 hours ago
    I didn't even know what exactly this thread was about Patrick. I come to this forum once a day and I just saw my name in a comment so I made some jest from it. Carry on.
  • PHILIP QUANTRILL
    by PHILIP QUANTRILL 8 hours ago
    I assume you had no problem accepting the first part of my comment "very nice" the second part seemed to complicate matters. Simply a matter of good manners I think, one posts, one receives comments, reply to those comments correctly or risk showing your lack of manners.... SIMPLES. Being rude is easy, "blaming" life events is a cop out.
  • Gregg Ludwig
    by Gregg Ludwig 3 hours ago
    The question "how much does it cost" (or variations of that question) is simply obnoxious. Looks like good weather in the forecast so you all enjoy some flying!
  • PHILIP QUANTRILL
    by PHILIP QUANTRILL 2 hours ago
    Strange your views when viewing your postings there are numerous times you make reference to cost/prices. Simply my 582 now has 580hrs and I am looking for a potential replacement for her, and therefore am trying to ascertain the options and their costs. I misguidedly thought that to ask a fellow triker the costs he had incurred would be wise and informative. Wise, obviously not, informative, certainly, but not as I would have hoped or that I would wish to give in response to a reasonable question. But, as you say, the weather is good, I will be in the air and I wouldn't want to exacerbate your demeanor, and there are many others who will offer the advice I seek.
  • Gregg Ludwig
    by Gregg Ludwig 2 hours ago
    Looking forward to your next in-flight video!
  • Rizwan Bukhari
    by Rizwan Bukhari 6 mins ago
    Philip, here is an email I got from AEROS (Trike and Wing manufacturer in Ukraine) regarding BMW engine on a trike instead of a ROTAX, I hope this helps answer your question. They say and I quote

    "We used to make trikes with BMW engine some time ago. Although BMW is
    powerful and reliable we found this engine as too complicated for the
    trike, plenty of electronics makes the installation rather difficult.
    Unlike BMW, Rotax engines are designed especially for ultralight
    aviation and are provided with post-sale service and support by the
    manufacturer. That is why prefer Rotax engines for our trikes.

    The trike with new BMW engine will be not cheaper than the same trike
    with Rotax 912."


    I hope this was helpful, I suppose if a person really knew what they were doing, they could bring the costs down. Having said that lately I have noticed more trikes with 912 engine on Barnstormers, some for as low as 16,000 dollars. Something worth looking into.
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