This is my 339 that I have been trying to madien for the last couple of weeks. We have had a few problems, tires falling off[:@] my turbine not acting right hummm what else oh yea my fire extingusher having a tie wrap and a certin someone not able to pull the pin... when we had a hot start. He should chim in once he see this. Would not of happend if I shut the valve off when I was refueling it..[8D]... But we are going to take it slow and not rush things.... Right Kevin East...

David Elizondo

Here is my 339 and my jet that i am going to get my turbine sign off with

Ok! I didn't get the pin pulled..But all you had to was turn off the propane.Anyway no damage, and we get to start again.

Kevin

The fire had me in a trance then when i finally came back to the ground I finally thought humm mabey if I turn the propane off it will go out.....
Sure enough bye bye fire.... By the way this is powered by a Ram 750 air start guys...

David

Don't feel bad about feuling with valve on have been there done that. cost me $46.00 for new egt probe Can tell you Ram 750 air starts are bullet proof I have 2 and wouldn't sell them

Hi David, Its a great flier and I have two seasons on my one now, T-500 power in my one... Of all my jets this one gets the most flying time. Most guys seem to be flying them on larger turbines, but she does perform best off sealed strip with the smaller 12 lb thrust class engines I reckon due to lower wing loading I guess... Landings are a breeze nice and slow even without flaps, pity Cermark seem to have stopped making them???

Marty, do you have the bent main gear wire? If so, does this cause 'hopping' on landing?

I will be flying the kit version this spring and haven't decided if I should move the retracts or not.
Jim

Jim, yes I have stock Spring Air gear, wire mains and modified Interco nose oleo with BVM sport wheels all round... It must be something to do with the heavier wing loading with bigger/heavier engines that causes the potential problems with bounce on landing, I have read about this quite a bit from guys flying the MB with P-80 and bigger engines installed. Personally I have never had even one bounce or any problems whatsoever with my MB landing too fast. I think the 'hopping' scenario comes from having to land quicker due to obvious higher wing loading and having to use the flaps to try and slow her down..... as I said previously my one lands so slow with T-500 I do not need to use the flaps at all, even with the smaller engine she moves out nicely at around 140 mph.
If you do plan on modifying the mains at all I would suggest removing and modifying molded wheel wells and getting hold of some trailing link oleo struts for mains as well as nose this would also assist reducing landing bounce concerns. If I was building a new one I would definitely do the main gear mod adding oleos that will fit as well as the nose oleo mod... I don't see how actually moving the main gear location would be of any benefit???

Do away with the plastic tie wrap that holds the pin and just slide a small piece of fuel tubing over the end of the pin.

Marty, the idea was to go to straight struts; but to do so would require moving the retracts back. The wheel still needs to retract into the same wheel well location (and same location on the ground).
I don't want to mess with trying to find trailing link struts. These are soooooo short!

I will fly it on a MW-54. Maybe this is all unecessary anyway........

Jim

Gary:
Thats what we did. Thanks for the input though.


Thanks
Kevin