FoxDB

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About FoxDB

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  • Gender Male
  • Location Idaho

FoxDB's Activity



  1. FoxDB added a post in a topic WY kitfox Yamaha build   

    72chevy, I have a mod 1/2 that the builder extended the very and rudder I believe how you did. When flying when rudder was pushed at cruise speed it deflected about 3 " this made me nervous so I added guy wires from top of horz to vert and this gave a warm fuzy. Just thought I would mention it.
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  2. FoxDB added a topic in Close Call's and dumb stunts   

    A word of warning
    I was preparing for a flight this morning and checked the brakes when the left rudder cable broke. This was not readily visible at preflight. I don't like the way the cable was crimped so tightly around the disc. I plan to put a stainless thimble around the disc to prevent such a tight bend of the cable.

    • 2 replies
    • 1,069 views


  3. FoxDB added a post in a topic convert fr 582 to 670   

    My neighbor is the guy who builds the dual plug 670 heads as well as the exhaust systems. The exhaust system controls the rpm of the engine after the hp peaks with increased rpm the hp drops dramaticly. My 670 hp dyno'd at 92.
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  4. FoxDB added a post in a topic Electric Trim   

    I don't know what phase of building or flying your in but FYI I added a manual trim that  just spring loads the controls since my plane was at flying stage. Have been happy with it.
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  5. FoxDB added a post in a topic 670 with 3/1 C box and IVO 3 blade UL?   

    Did not have the egt working that's why I have not flown it again. It has a 72" diameter. Don't remember the static but it would rev up to say 6500 then gradually drop while still at full throttle but that was with the modified 582 pipe. So Mike Hair built a 618 version he was providing for Rotax Rick but I have not flown it yet.
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  6. FoxDB added a topic in Avidfoxflyers General Hangar   

    670 with 3/1 C box and IVO 3 blade UL?
    I am wondering what experience 670 drivers have had with this combination?
    I recently put a 670 in my KF mod 1. I have been told it is not enough prop for this engine. I have only flown it once but had an exhaust concern. Have not tried it yet since having a new exhaust built (618 style).
    • 4 replies
    • 826 views


  7. FoxDB added a post in a topic New Rotax 670 Install   

    Not enough to know about, I get to many projects going. Hope to get back to it before to Long.
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  8. FoxDB added a post in a topic New Rotax 670 Install   

    I also changed to premixing, partly to insure I always had enough oil and partly weight and C.G.as the engine and exhaust system is heavier. Mike Hair is my neighbor and helped me build the 670. I then helped him with the build of a 720 (670 bored to accept Polaris pistons). I ran my 582 for 700 hours trouble free but was getting concerned about the high time. I also had a leaking oil injection check valve for the latter part of that and thought this is a way to eliminate this problem.
    Dave
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  9. FoxDB added a post in a topic New Rotax 670 Install   

    Are you going with oil injection or premixing.
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  10. FoxDB added a post in a topic Avid Flyer Mk IV Major Change and Upgrade   

    Sorry nlappos, I see your picture is prior to modification of the exhaust and your plane is an avid. Please disregard my prior comment.
    PS Mike developed the 582 pipe modification on my 670 engine
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  11. FoxDB added a post in a topic Avid Flyer Mk IV Major Change and Upgrade   

    nlappos,
    I hope you realize that is not the correct manifold for your 670. If your plane is a Kitfox you will need the shortest version of the Rave engine manifold to keep the elbow from interfering with the cowling.
     
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  12. FoxDB added a post in a topic Another dumb question   

    Kitfox 1, 13600 @ 300fpm Arctic Sparrow mixture control
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  13. FoxDB added a post in a topic Bad fuel line warning   

    I believe your tygon tubing is Vinyl Tubing because I have seen the same thing. I now use Urethane tubing from snowmobile shop (blue stuff). Caution never use Urethane tubing in a coolant line the hot coolant degrades it quickly I have seen 2 cases of failure 1 lead to a forced landing!
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  14. FoxDB added a post in a topic Takeoff and Landing styles   

    Well all comments were very good. Now to change the subject slightly. I watched a demo years ago of a super cub doing cross controlled one wheel landings and switching from one wheel to the other. I had to try it which I did first in a C150 just had to keep the nose wheel from touching. I later did it in my Kitfox 1 which was easier. I was showing off (now you know where this is headed) with a rider one day doing this. I herd a scraping noise. The right droop wing tip lost a little fiberglass. DON'T Try this at home. Hey these are toys aren't they!
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  15. FoxDB added a post in a topic Hurst Airheart 150 brake calipers   

    I had them on my model 1 before I built my bush gear. The only problem I had was a shacking of the puck when it was worn a bit. The only other problem is puck replacement availability.
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