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The CEF "run what you brung" prop rod build
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The CEF "run what you brung" prop rod build
Last edited by crankbndr on Mon Oct 12, 2015 4:00 pm; edited 1 time in total
crankbndr- Top Poster
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Join date : 2011-12-10
Location : Homestead FL
Re: The CEF "run what you brung" prop rod build
I like it! At first I thought it was a tube chassis.
Bob
Bob
dckrsn- Diamond Member
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Join date : 2010-10-21
Age : 71
Location : Long Island, New York
Re: The CEF "run what you brung" prop rod build
How about a ducted fan setup, since you already have the duct as a part of the chassis
KariFS- Diamond Member
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Age : 52
Re: The CEF "run what you brung" prop rod build
KariFS wrote:How about a ducted fan setup, since you already have the duct as a part of the chassis
That was my first thought also, Ducted Fan...also, somewhere Back in time I had a Co2 powered racer. Blew threw a whole bunch of Co2 cartridges, that I could have used in my BB gun. Could try that again, or some of those Estes rocket motors!
JATO racer...whoosh! ( Indy car emoticon)
Marleysky- Top Poster
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Re: The CEF "run what you brung" prop rod build
Ducted fan would be cool, I don't know much about them. Could maybe stuff a battery fan in the tube.
I wanted to run it with a Cox engine though. They still sell ramjets don't they?
I wanted to run it with a Cox engine though. They still sell ramjets don't they?
crankbndr- Top Poster
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Join date : 2011-12-10
Location : Homestead FL
crankbndr- Top Poster
- Posts : 3058
Join date : 2011-12-10
Location : Homestead FL
Re: The CEF "run what you brung" prop rod build
Oh.. the wheels are turning! I'm thinking you could cross-slot the bottom of the tube using a miter-saw.. for the axles to fit up into. If it's a tether car, figure out the radius you'll be running.. and angle the slots; so that the axles track into the circle. Secure the axles with legs made from sheet metal strips.. that will follow the body-tube's contour, when screwed-on vertically. The body-tube will support the axle from fore/aft movement.. so the legs need only level the axles, establish their height and hold them captive from dropping out the bottom. You could easily trick this approach out.. by slotting the sheet metal.. where it wraps around the tube.. allowing you to set body-camber and lean the car into the circle.
As for ducted-fans.. you can still find these.. I believe it's a Kress unit. Search Kress Axiflow RK-049.
I don't know if that duct-tube comes with this kit shown below.
I see the "Midwest" name on this kit.. but I remember when Kress had their ads for this design in the model airplane magazines.. years ago. I wanted one.
As for ducted-fans.. you can still find these.. I believe it's a Kress unit. Search Kress Axiflow RK-049.
I don't know if that duct-tube comes with this kit shown below.
I see the "Midwest" name on this kit.. but I remember when Kress had their ads for this design in the model airplane magazines.. years ago. I wanted one.
Last edited by roddie on Mon Oct 12, 2015 8:21 pm; edited 1 time in total (Reason for editing : clarification)
Re: The CEF "run what you brung" prop rod build
Thanks Roddie, I got one for ya. I need to get symmetrical lines length ways on the tube every 90 degrees for top, bottom and the sides.
If the first line has any twist in it all the others will be off.
If the first line has any twist in it all the others will be off.
crankbndr- Top Poster
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Re: The CEF "run what you brung" prop rod build
crankbndr wrote:Thanks Roddie, I got one for ya. I need to get symmetrical lines length ways on the tube every 90 degrees for top, bottom and the sides.
If the first line has any twist in it all the others will be off.
Use a bracket.
pkrankow- Top Poster
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Location : Ohio
Who's got that?
These are manufactured anymore that I know of. I would dearly love to see an exploded view of one of these and maybe the install instruction posted.
You know, for educational purposes only, of course!
You know, for educational purposes only, of course!
VUgearhead- Gold Member
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So what are the rules?
happydad- Rest In Peace
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Re: The CEF "run what you brung" prop rod build
The rule book is complex and cluttered but the first rule is,
THERE ARE NO RULES!!
THERE ARE NO RULES!!
crankbndr- Top Poster
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Re: The CEF "run what you brung" prop rod build
My first attempt at building a chassis to carry the tube was a big fail, it is not near rigid enough. The aluminum chassis on the Cox Prop Rod is very rigid, strong.
Back to the drawing board with heavier angle and plate. I started out thinking of TD .049 power, then thought it too heavy and maybe an .09 would better.
Then I thought if an .09 is good a TD .15 would be great, I'm running off the rails here.
Back to the drawing board with heavier angle and plate. I started out thinking of TD .049 power, then thought it too heavy and maybe an .09 would better.
Then I thought if an .09 is good a TD .15 would be great, I'm running off the rails here.
crankbndr- Top Poster
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Re: The CEF "run what you brung" prop rod build
crankbndr wrote:The rule book is complex and cluttered but the first rule is,
THERE ARE NO RULES!!
Are we going for speed? Or destructive capabilities? On my watch list:
http://www.ebay.com/itm/121804101408?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Marleysky- Top Poster
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crankbndr- Top Poster
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Re: The CEF "run what you brung" prop rod build
Wouldn't have looked out of place with Sergeant Blast and Private Meekly in place of the Army Surplus Special #6 on Wacky Racers
Davenz13- Platinum Member
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happydad- Rest In Peace
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Davenz13- Platinum Member
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Nope
Someone sniped me in the last 10 seconds. I wish I new how they did it. It would save a lot of watching and waiting.
oh well. I still have my yellow Shrike with extra engine coming.
happierdad
happydad- Rest In Peace
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Re: The CEF "run what you brung" prop rod build
Wow, that went for less than what the engine is worth by itself!! Had to be won by a sniper as the bid came in 11 seconds before the close of the auction, and only .50 more than your bid. I looked and looked at it on my watch list. Decided it was a cool piece, but I really didn't need something else taking up shelf space (darn common sense takin over). Sorry you didn't win.
Marleysky- Top Poster
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Re: The CEF "run what you brung" prop rod build
After much cutting, fileing, sanding, filling, pop riveting, drilling and a trip to the eye doctor ( table saw shot a tiny piece of aluminum into my eye even with safety glasses on) I have a rolling chassis.
Going to fill in and shape the sides with balsa and mount a TD .15 and the vertical stab in the tail somehow. The fuel tank I haven't figured out yet, it needs to be small, mounted in front of the engine
and part of vert. stab.
Going to fill in and shape the sides with balsa and mount a TD .15 and the vertical stab in the tail somehow. The fuel tank I haven't figured out yet, it needs to be small, mounted in front of the engine
and part of vert. stab.
crankbndr- Top Poster
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Re: The CEF "run what you brung" prop rod build
That cylinder needs flames shooting out the back !! TD 15 should get,R going moving . Whats that screw coming out the back? holding ? Heck there is a Jeep Or truck one under a bush out in my yard I should pull it and have a thought . getback
getback- Top Poster
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Re: The CEF "run what you brung" prop rod build
Safety First! Even with safety goggles you got stuff in your eye, aluminum too. Man, I use to use pencil magnets to remove "Muffler Dust" from my eyes after working on cars exhaust system, that would not work with aluminum...Owch!
Just got my tires back from the Balancer....says they're good up to 15 MPH: We'll see. Co2 or Estes Jet pack in the design stage:
Just got my tires back from the Balancer....says they're good up to 15 MPH: We'll see. Co2 or Estes Jet pack in the design stage:
Marleysky- Top Poster
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2 cox engines, 1 pusher and 1 puller
Marleysky wrote:Safety First! Even with safety goggles you got stuff in your eye, aluminum too. Man, I use to use pencil magnets to remove "Muffler Dust" from my eyes after working on cars exhaust system, that would not work with aluminum...Owch!
Just got my tires back from the Balancer....says they're good up to 15 MPH: We'll see. Co2 or Estes Jet pack in the design stage:
try 2 cox engines, 1 pusher and 1 puller. it should really fly.
happydad
happydad- Rest In Peace
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dckrsn- Diamond Member
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