Ah yes! The long lost Cox Skate Prototype

Awesome!

Phil

Here's a similar model, a bit more sophisticated though

http://www.ebay.com/itm/Cox-049-Glow-Engine-With-Customer-Made-Free-Ride-Car-/391263945802?hash=item5b1926044a

Now this definitely calls for a tethered profile Leyat Helica speed model

batjac wrote:

OVERLORD wrote:Here's a similar model, a bit more sophisticated though

http://www.ebay.com/itm/Cox-049-Glow-Engine-With-Customer-Made-Free-Ride-Car-/391263945802?hash=item5b1926044a

Hmmm...  Seems like it could be done a little lighter with some PVC rectangular tube.  I DO have a spare set of wheels for my Tamiya Cricket, which are pretty much direct replacements for the Cox Sandblaster.  Maybe I'll have to make something up.  Perhaps an unofficial 2016 CEF Home Brew Cox Tether Car Competition?

The Scheming Mark

I'm IN for a Cox build your own tether car contest!! Cool!!

Good idea; wheel or prop driven?

Keeping the spirit of the skate, how bout prop? I'm not to good with gears.

Count me in if it's prop,
Jim

Guys: I think this "Thing" has you all beat. There is a word for it, but I can't say it here because this is a family program. So have a laugh at someone else's expense.  As seen on our favorite ebay.


That is one ugly whatever it is. Sorry.

happydad  

HD, apparently, they were made by Scientific. If the one above is the one you saw on eBay, here's another one:

http://www.ebay.fr/itm/Thimble-Drome-Gas-Powered-Tether-Car-Oiginal-Babe-Bee-Engine-Driver-1950s/151824026401?_trksid=p2045573.c100033.m2042&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20140423084956%26meid%3De074b88b47f448a2857ffc84a5648a84%26pid%3D100033%26rk%3D2%26rkt%3D4%26sd%3D291568842987

OVERLORD wrote:HD, apparently, they were made by Scientific. If the one above is the one you saw on eBay, here's another one:

http://www.ebay.fr/itm/Thimble-Drome-Gas-Powered-Tether-Car-Oiginal-Babe-Bee-Engine-Driver-1950s/151824026401?_trksid=p2045573.c100033.m2042&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20140423084956%26meid%3De074b88b47f448a2857ffc84a5648a84%26pid%3D100033%26rk%3D2%26rkt%3D4%26sd%3D291568842987

well, they are worth about 8 euro, but not the 19euro for shipping. I thought it was something someone made from wood for an ugly duckling contest. Oops, did I say that out loud.

happydad  

crankbndr wrote:Keeping the spirit of the skate, how bout prop? I'm not to good with gears.

Prop is fine, less complicated and a great source for creativity!! What will be the next step? Rules?

BTW what circle diameter is needed for an 049 driven vehicle? Do instructions of f.i. Prop Rod say anything about it?

Cox early Prop Rods used a 7' cable, came in starting kit.

This can get really creative, and I am looking forward to the rules. Already have a couple of ideas

Perhaps a few classes for Bee and TeeDee Cox only engines

How bout 8' radius circle and Cox .049 engine. One of the problems with TD is finding prop cause they won't run backwards. There are reverse cranks around.

OK I am in if we can get things rolling and some one to lead the way . I made a bee powered wire thingy as a kid my uncle told me they use to make but it just went and went an went , it was flimsy so starting the bee was a trick but was only wire wrapped with no solider. I got a prop rod but was discouraged when I found out it had more glue on it than screws , the mount is broken and someone glued the [bleep] out of it !! I will have to make a balsa insert to put in it with a ply. mount for the engine not pretty but I just got it to run anyway . Eric

crankbndr wrote:How bout 8' radius circle and Cox .049 engine. One of the problems with TD is finding prop cause they won't run backwards. There are reverse cranks around.

Crankbndr: if they won't run backwards why did Cox make a spring starter to start them backwards? And yes you will need a different prop. My shrike has a starter spring the winds to the left and starts CW which is backwards. So did the Prop Rod and Water Wizard.  
   Or are you talking specifically about the TeeDee? And yes there are reverse crankshafts around. Cal-Dan or whatever name he is using on eBay today has several for about $10.00 plus shipping. TD crankshaft LH. Sorry about the misunderstanding.    

Happydad

I've been thinking about some suggestions for rules or guidelines for the contest. :

- Radius of 8' or 2,44m from centrepoint to the mounting points on the car body or chassis.

- Length of the car fixed at 12" or 30 cm (length of the Shrike ) from one end of body/chassis to the prop washer. ( Or would it be better to fix a wheelbase?)

- Car must be of the full body type and not a profile or a flat plank. The car can have a chassis with body or have a monocoque construction.

- Wheel track is free, the car must have 4 wheels touching the ground. wheels can be of different diameter front / back.

- Engine must be a Cox 049 tanked reed engine, mounted forward, in the middle or at rear; pusher or puller, pointing forward or backwards. Propeller choice is free.

These are just ideas. Other suggestions or modifications if necessary are welcome.


What are we aiming for? 10 laps / fastest time? Number of laps with fixed amount of fuel? what about fuel to use? TD class? End date?


I found some Shrike and Prop Rod video's on Utube:



https://www.youtube.com/watch?v=1BTZg9B2x80



https://www.youtube.com/watch?v=U-JHfjNuL18

Nice job OVERLORD! I like everything but think a minimum car length would be good? 11" or 12" minimum?
I like timed laps for speed also.

The "box" must be defined better. What is the minimum maximum dimension in all directions. (yes I think I said that right) Take a prop rod and measure it, that probably is a good choice.

So
chassis wheel base and width
body width and height

open vs closed wheels? Pants? Drive tire(s)?

Phil