Micro Ringmaster coming together

TDbandit wrote: Trying to keep it light. Still have to make up the leadouts and attach them to the bell crank and rig the controls of course after painting.

BTW This is the absolute smallest model i've built so far, as far as tip weight how much should be used? I plan on flying it on 17' lines. (Bandit)

roddie wrote:

TDbandit wrote: Trying to keep it light. Still have to make up the leadouts and attach them to the bell crank and rig the controls of course after painting.

BTW This is the absolute smallest model i've built so far, as far as tip weight how much should be used? I plan on flying it on 17' lines. (Bandit)

Cool on the controls! How are you planning to do the lead-outs? I like solids.. but solid's small enough for this model (.015"?) will bend with discouraging ease. I still like them though.. The thought of flying on 17' lines thrills me! Have you seen the Cox handle that's a two-finger grip? It has a 1-9/16" line spacing. What's the spacing on your bell-crank?

I can't seem to upload a pic of my handle..  

As for tip-weight.. you could weigh what your using for line (get the tare on a spool and re-weigh after winding-on the 17 feet..) Add that weight to the outboard tip.. and see how it balances with the lead-outs installed.

roddie wrote:I'm trying to post a pic of the narrow line-spacing with my Cox Cosmic Wind handle.. but the image host is not recognizing it. It's a little handle with two rings that's held with your index and third finger. The Cosmic Wind model is pretty small.. and there was the risk of over-controlling it with too-wide a line-spacing. Cox must have furnished this handle with other small models like the .020 powered Pitts or the Army-Trainer I would think. Perhaps Bernie got some replacement handles in, as part of that recent large parts acquisition? He doesn't currently stock the Cox handle I mentioned though.

Did PDK have any recommendations on a handle? I imagine they specify an equal-spacing.. but a "finger-tip" type handle I think would be really good for this model.. from a control feed-back standpoint.

batjac wrote:I'm using one of these late model Cox handles.  The holes are 3 1/8" apart, so I just drilled holes 2" apart.




The Late Model Mark

roddie wrote:I'm trying to post a pic of the narrow line-spacing with my Cox Cosmic Wind handle.. but the image host is not recognizing it. It's a little handle with two rings that's held with your index and third finger. The Cosmic Wind model is pretty small.. and there was the risk of over-controlling it with too-wide a line-spacing. Cox must have furnished this handle with other small models like the .020 powered Pitts or the Army-Trainer I would think. Perhaps Bernie got some replacement handles in, as part of that recent large parts acquisition? He doesn't currently stock the Cox handle I mentioned though.

Did PDK have any recommendations on a handle? I imagine they specify an equal-spacing.. but a "finger-tip" type handle I think would be really good for this model.. from a control feed-back standpoint.

TDbandit wrote:Nice model, is that your micro nobler? And that tank, what size is it? I would like to get a hard tank so I can loop but I don't know what size. smallest tank I have is 3/8 oz, put that thing on there and i'll end up boring a hole to china lol. (Bandit)

batjac wrote:

TDbandit wrote:Nice model, is that your micro nobler? And that tank, what size is it? I would like to get a hard tank so I can loop but I don't know what size. smallest tank I have is 3/8 oz, put that thing on there and i'll end up boring a hole to china lol. (Bandit)

Yup.  That's my Nibbler.  I'm not positive on the size of the tank.  It's the smallest tank I have.  It came in a lot of Cox parts I got a while back.

The Unsure Mark

gcb wrote:A couple of comments...

I use those type hinges on small planes. I first saw it on a Scientific plane by Walt Musciano in the mid fifties. You might consider installing them on the bottom of the stab so they can't be seen.

That's an awfully small plane for that engine. Good luck. You may have your hands full flying it.

Cox used to make more narrowly spaced handles. Note the green one in one pic and the small one in another:

 



George

roddie wrote:Here's the handle (finally.. it uploaded) It's similar to the white one that George pictured above.  

roddie wrote: This Perfect #15 "short-tiny" wedge-tank is 1/8oz. capacity. It has stunt venting. Brodak "may" have a repro. of this size. They seem to stock most of the other sizes of Perfect-style wedges.



Yes, Brodak has that tank.. They also stock a slightly larger 1/6oz. one too. See link below and also page 4 of their fuel tank directory. Lots of options there. Beware though.. these are known to be hit or miss as far as quality (soldering) is concerned. They should be flushed and leak-tested even when new, to reveal any defects.

Brodak 1/8oz wedge