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 31 
 on: Yesterday at 06:10:01 PM 
Started by dale gleason - Last post by dale gleason
She's almost done, no time left for buffing it out. Just a final picture to show the control surfaces. Lot'sa elevator, balanced, low aspect wing.

Thanks for dropping by.....
dale g  

 

 32 
 on: Yesterday at 05:40:28 PM 
Started by Crist Rigotti - Last post by Curare
Christ, I had similar issues with my electric chipmunk, and tried a few things to get a better idea of whats going on.

Have you tried it with the top hatch off? This will give you an idea of whether you need more exhaust area, a radical change in temp will show that, considering yours is built like mine (or should I say I copied yours almost verbatim) I think you'll find very little change.

Adding a cooling disc to the back of the motor can help create a centrifugal pump out of the the back of the motor.

Emax have them as part of the stuff you get with their GT motors, but I suspect a fine modeller like you could make one out of carbon in a few minutes.



Be careful that you don't stall the airflow out of your motor, but have a 'cooling spinner' at one end and a disc at the other, I'm pretty sure that cooling spinners acutally pull air forwards through the motor rather than let it flow through.


 33 
 on: Yesterday at 05:22:05 PM 
Started by Wayne J. Buran - Last post by Wayne J. Buran
I have for sale the following Adamisin/Brodak tongue mufflers, new in package, one each.

TM-1 Fox 35 Stunt
TM 12 Fox 35 Stunt 50th anniversary

Price for this lot is $38.00 which includes shipping via USPS Priority Mail to any U S destination only. Payment via PayPal or a check from a current forum member
is acceptable.

Thanks
Wayne

 34 
 on: Yesterday at 05:12:44 PM 
Started by Mike Griffin - Last post by Dan McEntee
    I find it strange in how he entered the maneuver. I have never done an outside snap roll before, but have seen them done a zillion times and it just strikes me as odd. He pulls up sharply but shallow into an upward line of flight, then cranks the wings into a 45 degree bank to the left, kind of half knife edge, then starts the outside snap roll from that point in the same direction. I'm thinking he didn't have the airspeed and aileron authority for a high enough roll rate do do what he intended.  By the time he finished the first one, he had lost a lot of air speed. The airplane goes into a second outside snap, but much slower and never quite finishes the rotation, and the right wings are pointed down at the ground and he's falling like a rock and looks to have almost zero ground speed at that point. Then it rolls around up right into a spin, and by the time he arrests the spin, it's too late.  Like Chris points out, you can hear him crack the throttle a couple times, more than likely too little too late and at the wrong time.  Still seems like a little low to be doing out side snaps, maybe less than 800 to a 1000 feet?  I don't mean to belittle the poor guy by dissecting his crash like this, but just find it interesting and want to understand the situation. I'll never have the ratings to come even close to flying acro, but still am really interested in the ins and outs of what goes on in the cockpit.
      Type at you later,
     Dan McEntee

 35 
 on: Yesterday at 04:24:43 PM 
Started by Bobs your Uncle - Last post by Bobs your Uncle
Brodak P-40B ARF

New in Box

$110 plus $20 for Fedex Ground.

Cash Check, Paypal


 36 
 on: Yesterday at 04:19:14 PM 
Started by frank mccune - Last post by Tim Wescott
I forgot to mention: the simple ones that are already out there probably work GREAT, at least as long as your tool uses a universal-wound brushed motor (in other words: darned near anything hand-held, but probably not a bench grinder).

You don't want to ask this sort of question on an engineering group, because the first thing an engineer will do is to think of the problem that would be fun to solve, then they try to talk you into that solution.  Since "fun" equals "lots of the boss's money" to an engineer, this isn't always the best solution if you just want to grind something without burning it up.

 37 
 on: Yesterday at 04:15:26 PM 
Started by Charles Hofacker - Last post by Tim Wescott
Thanks for the info... I'm going to return it for exchange. It is definitely a mechanical "catch" or "jam" not a "bumpity bump" magnetic feel. It will jam solidly with no further rotation possible until it is "backed off" a bit then continue turning. Brodak has always been really good correcting things even when it was my mistake and not theirs like ordering the wrong part.

I believe that the highly technical, engineering term for your motor's condition is "broken".  By all means you should send it back for replacement.

 38 
 on: Yesterday at 04:11:59 PM 
Started by frank mccune - Last post by Tim Wescott
There are speed controllers like that which are specifically for power tools.

AFAIK they won't regulate speed -- they just limit the power to the tool, which sorta-kinda slows it down.

 39 
 on: Yesterday at 04:10:15 PM 
Started by Bobs your Uncle - Last post by Bobs your Uncle
Brodak 40

Used had possibly as few as 10 runs. Muffler has some Castor residue.
Mounts very clean, engine has inscribe below mounts that it is the Mark II.

$109 plus $7 for Priority postage.

Paypal, Check, Cash Money Order.

 40 
 on: Yesterday at 03:45:01 PM 
Started by Mike Griffin - Last post by Mike Griffin
Sounds like from what you are saying he lost SA.  Situational Awareness

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