Kolb-List Digest Archive

Sun 04/10/11


Total Messages Posted: 5



Today's Message Index:
----------------------
 
     1. 07:34 AM - Re: First Flight! (b young)
     2. 08:38 AM - Re: First Flight! (Jason Omelchuck)
     3. 09:10 AM - Re: First Flight! (Jimmy Young)
     4. 10:10 AM - Re: Re: First Flight! (Larry Cottrell)
     5. 10:12 AM - Re: Re: First Flight! (robert bean)
 
 
 


Message 1


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    Time: 07:34:47 AM PST US
    From: "b young" <by0ung@q.com>
    Subject: Re: First Flight!
    Not sure what to do about the coolant temp. I had quite a bit of trouble during the engine break-in with coolant temp and had to run two garden hoses (one to each radiator) to waterfall water over it to get thru the engine breaking. I figured this was just because engine break-in is a static test and the engine was new so the seals were being rubbed in. Since then I've had no problems until today. I don't have a coolant recovery bottle but I haven't noticed any fluid coming out of my overflow tube. I'll check the radiator level when the engine cools down and see if it's low. I did burp the system several times during breakin and again after first flight. Didn'd see a lot of air coming out. The engine is new but the twin radiator is used. Instead of the expensive Rotax cross under molded hose I have a a short radiator hose from each radiator connected to a copper cross under tube, but not sure why that wouldn't work. I do have a BRS (canister) and the Rotax engine mounted oil tank, so there is quite a bit of blockage in front of the radiators. I may have to make a pair of baffles to improve the airflow. All in all it was an exciting day. Can't wait to get it fixed and get flying again. Mark Rinehart congratulations on the first flight!!!!!! and sorry about the gear. ok... from your description i'm not sure what engine you have.... you mentioned the rotax engine mounted oil tank... are we talking 912, oil tank or 2 cycle oil tank? you mentioned the coolent temps, how were the exhaust temps? if you can send a couple pictures of your engine set up... i am sure someone can help figure a solution. i would invest in a coolant recovery bottle,,, what kind of antifreeze are you using, and at what concentration? boyd young mkiii


    Message 2


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    Time: 08:38:32 AM PST US
    Subject: Re: First Flight!
    From: "Jason Omelchuck" <jason@trek-tech.com>
    When I slightly bent my aluminum gear, I just unbolted it and turned it 180 degrees in the socket so it was now slightly bent down. Attached is a picture of my MKIIIC with a steel gear made to John H specs. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=336528#336528 Attachments: http://forums.matronics.com//files/imgp1543_161.jpg


    Message 3


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    Time: 09:10:44 AM PST US
    Subject: Re: First Flight!
    From: "Jimmy Young" <jdy100@comcast.net>
    Mark, #1, Congratulations on your 1st flight. I've bent a bunch of gear legs on my Firestar (at least 4 times & I think more). They straighten out pretty easily with a good press. Have fun & fly safe - -------- Jimmy Young Missouri City, TX Kolb FS II/HKS 700 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=336531#336531


    Message 4


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    Time: 10:10:14 AM PST US
    From: "Larry Cottrell" <lcottrell1020@gmail.com>
    Subject: Re: First Flight!
    Gang, The current thoughts concerning alum landing gear as being a safety feature is contrary to my findings. I have had to do three repairs to my Firestar due to the bending "Safety feature" of alum. legs. I am convinced that if the current steel gear legs had been on my plane the damage would have been significantly less, or non existent, in all three of these incidents. My last incident, thankfully three years ago, was because of a very hard landing that broke the axle fitting. ( I had stalled the plane about 30-35 feet above the ground, almost leveled out but hit on the right gear leg.) the front angled gear dug into the ground and sheared the tubes on either side of the cage as well as the rivets holding the boom tube in place. The other two incidents bent the legs, one slewing me around into a ditch, the other snapping off upon hitting a rock during an off field landing. The steel legs that I have now actually have enough spring in them to boost me back into the air a hell of a lot softer and more recoverable than would happen if the leg bent . My point is that the legs bending can end up causing more trouble than if the gear absorbs the "impact" with the springy feature of the steel legs. Yeah, enough impact or a really hard landing is going to tear some things up, but it will at least take a serious one. My gear legs are designed after the ones that John and his brother Jim, made rather than the factory ones. I haven't seen them, so I cannot comment, but mine have a lot of spring in them that will absorb a lot of shock. There is no way that I would fly in the country that I currently live in with alum gear legs. The thought is that alum absorbs shock, thus preventing damage to the cage. The only problem with that is generally when the gear is absorbing said shock, you are still going to have to deal with the fact that your plane is still moving, either forward, or perhaps sideways if the gear bends. The damage occurs after the legs bend. Steel will return to as normal a position as it is able after the impact occurs. Alum. never does, and often then is when the damage occurs. Now it is true that the worst injury that I received from these "adventures" was a bunged up middle finger. Who knows things might have been worse. I do know that Homer definitely designed a cage that absorbs shock better than any other home built out there, I just don't believe that alum is better than steel. I think it is too weak a link. Peace time Ace! Larry Note: If you forward this email, please delete the forwarding history, which includes my email address. ----- Original Message ----- From: Jimmy Young To: kolb-list@matronics.com Sent: Sunday, April 10, 2011 10:06 AM Subject: Kolb-List: Re: First Flight! Mark, #1, Congratulations on your 1st flight. I've bent a bunch of gear legs on my Firestar (at least 4 times & I think more). They straighten out pretty easily with a good press. Have fun & fly safe - -------- Jimmy Young Missouri City, TX Kolb FS II/HKS 700 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=336531#336531


    Message 5


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    Time: 10:12:16 AM PST US
    Subject: Re: First Flight!
    From: robert bean <slyck@frontiernet.net>
    The key word(s) here are GOOD PRESS. The MkIII aluminum legs will take a lot of force to straighten. One of the respondents said to turn it 180 and stick it back in. Good advice, but alignment will be an issue. When you stick it in the press you will have to exceed the current bend in the opposite direction by a good amount. Be careful to block and jig it so you won't get hurt. My only bent leg wasn't due to pilot error but mechanic error, over eager to shoot around the patch before the carb was set up right. Quit at 50' on short final when I retarded the little lever. Good thing I was past the expressway. A hasty dive saved the rest of the plane. The best of us can still bend one though. All you need is an unpredictable gust at the last minute and you will be in a precarious position. I've done a few swoop and skim maneuvers since and have lucked out. Having a fast engine spool up response is mucho importante. BB MkIII, suzuki On 10, Apr 2011, at 12:06 PM, Jimmy Young wrote: > > Mark, > > #1, Congratulations on your 1st flight. > > I've bent a bunch of gear legs on my Firestar (at least 4 times & I think more). They straighten out pretty easily with a good press. > > Have fun & fly safe - > > -------- > Jimmy Young > Missouri City, TX > Kolb FS II/HKS 700 > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=336531#336531 > > > > > > > > > >




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