Cox .01 /.02 /.05 /.09 /.15 Speed Planes

Wow I had the impression you use the half with the threads for the cap!! Now I got it!

Just a thought cuz I went to the e-bay link and saw two tubes for 8 bucks... kinda pricey IMO

I have dozens of various sized cigar tubes....smoker free now since July so no more BUT

If you have a cigar shop withing reasonable shopping distance.... stop in and ask the proprietor to put out the word..you want some empty aluminum tubes...one of his regular customers will let you have quite a few

I did this wanting a lot of wooden Cigar Boxes...one guy had thirty of all sizes I could have if I just come get them

Cigar boxes are actually made of great wood are real precisely made

Gents here is an alternative source option: I am a scientist by training-in more recent years specialising in proteomics-quite a lot of which involves 2-D gel electrophoresis as an analytical technique-the tubes we get the pre-prepared IEF strips for the first part of the 2-D technique come in very nice screw top aluminium containers-that seem very similar to cigar tubes but stronger. I-being a modeller collected all our empties after use for future modelling use-though to be honest I was thinking in terms of making mufflers from them rather than tanks!

Anyway-getting to the point-these were/are a Biorad product-Biorad being one of the cutting edge US companies in the medical/scientific/biotechnology sphere-with a very wide product base-so you can just about guarantee their products will be in use at a university-and possibly even a hospital-near you.   The product was called ReadyStrip IPG strips [there were several length and isoelectric focussing pH ranges-but they all came in identical containers.  So a few local inquiries might turn up trumps for you!  Failing that-a query to Biorad themselves inquiring where they got the tubes from might lead you to the original source...     [I have taken pics but this site won't let me insert or paste  them-we'll see if the host functionality works..[added in edit..apparently not!     FWIW they measure 5.28 inches in length, OD is 0.854", ID 0.820, and the cap has a nice plastic internal seal (the product was meant to be stored at -20C so you didn't want moisture creeping in.

ChrisM
'ffkiwi'

1/2A Nut wrote:Thank you Chris,   the site restricts you posting a photo for a short duration after
joining as some folks join just to spam or try to sell something etc. After a few posts / days
the software will allow you to load files to the posts. When that is possible please post a pic.

Per your description the 0.854" OD equates to 21.7mm
Small OD is one of my reasons for me trying the thick walled reusable cigar tubes.
The radial mount for the engine is the constant at 22mm. If I can keep the width of
the fuselage maxed at the firewall than going back to the wing saddle will be a plus
for weight savings and speed.  

The current Nano TD .020 speed plane:
24.75mm at the leading edge of the wing.
21mm OD / 2.9g ultra-lite 1/2oz nylon tank being used currently.  
The thin ply fuselage side panels where glued to the tank.
The tank is literally being used as a former for the fuselage.

The smaller dia. of the aluminum cigar tank will allow a more narrow fuselage as the OD is 16mm.  
It's also eye candy so can be used in a open frame plane per the Stick .020 rendering.
Speed or floater still polished aluminum will always add to the aesthetics, aluminum in the
prop blast will naturally cool the fuel which is the primary goal.

I've just gone out to the workshop and weighed one of the Biorad tubes: 10.4g (including cap)-that with the dimensions I posted earlier should enable a comparison with the 'thick walled reusable cigar tubes' [for all I know we may both be describing the same thing...-but with different end users!] Anyway-your tank approach does inspire me to try a similar approach for an F1J model tank-and having several C/F front ends available I will have to see how things might potentially fit.....

Chris

1/2A Nut wrote:Stock tube I am using is 6.3g / .63" OD x 4.5" L

Chris your tank find sounds perfect for 1/2 oz to 1.2 oz
How much fuel do you need for a F1J  FF tank?

I have made a 1.7oz aluminum tank just prior to the new cigar tube effort.

Not a lot-the engine run is only 5 seconds! But allowing for starting, setting and sufficient fuel for floodoff probably 20cc would be adequate (bearing in mind people tend to use bladders-which are fine-but messy-this tube approach would be a reversion to the old technology of a 'hard tank' for pressure feed. Some of the 'old guard' F1C fliers still use 'hard tanks'-the UK's Phil Ball being one-but there is quite a lot of engineering them- flange mountings O-rings etc-and this cigar tube approach offers a lightweight way around that.....

A quick check establishes that the volume of the complete tube brim full is 45ml-so a half tube length tank would be about 20cc give or take...and it strikes me just as I type this-that you could adopt (for my FF purposes at least) a 'belt and braces' approach-use a cut down tube to hold a bladder-giving you a compartment impervious to fuel in the event of a bladder leak/burst.....which is always the problem when you use a bladder or pacifier internally in the fuselage...not to mention the mess/damage caused if fuel gets in your clockwork or electronic timer as a result....

ChrisM

Besutiful piece of art and great test results Brad...I wish that new header were available for ordering (???)

No mention whatsoever of the blunt wrap's final use. We all know how modelers don't like toss anything that might be useful in some "project".

Anyhow that's one smooth shrieking mama ya got there Nut.

Very Cool !! sounds like a GO to me , i sure hope things RPM /SPEED work out Is this just for the /.09 or will there bee something for the others ? I personally would like to see what i could do with a Reedie Pipe !! If you can get a 20-21K from just a TD cly and some tuning of coarse ,, well ! Merry Christmas !

.  

Let me know if those headers become available.  I'd love it if extensions are available too.  Thanks for doing the footwork!

me too
Let me know if those headers become available