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"Tee Dee .010 r/c"


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Cars-Stars 2019 "Rodd-E-Liminator" Empty Cars-Stars 2019 "Rodd-E-Liminator"

Post  roddie on Thu Apr 04, 2019 12:24 pm

Rather than continuing to clutter the contest thread with my build.. and every little OCD-added nuance.. Rolling Eyes I decided to start a separate thread.



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Cars-Stars 2019 "Rodd-E-Liminator" Empty Summary..

Post  roddie on Thu Apr 04, 2019 1:46 pm

I started this build late.. (on 3-31-19) I'd never had a IC engine-powered car; tether/RC/free-running or otherwise.. but I got sucked-in by the hype.. This Site Rocks! I Love This Forum!

I took a simple "profile-design" into consideration.. got out my "French-curves" and started drawing onto some old 3mm luan ply stock which I have a surplus of.

Cars-Stars 2019 "Rodd-E-Liminator" 20190357
Cars-Stars 2019 "Rodd-E-Liminator" 20190358

I had a direct-drive design in my head from the get-go. "What the heck".. if I can get it to hook-up.. it'll fly...... right?

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Cars-Stars 2019 "Rodd-E-Liminator" Empty wheel-driven..

Post  roddie on Thu Apr 04, 2019 2:24 pm

I had made some flywheels for my Cox .049 engines when I had access to a CNC router machine. Their hubs have .125" (1/8")bores.. which is the correct size for the 5-40 machine-screw which fits the Cox .049 engine's crank-shaft.

The largest of the flywheels was made from 1/2" (.500") sheet PVC.. and cut to a diameter of 1.375". Material was removed (hogged-out) from the inside.. to a diameter of 1.125" and a depth of .400".  

This size is the size for my trial drive-wheel..

Cars-Stars 2019 "Rodd-E-Liminator" Dsc04911

I obviously needed a traction-element. I am trying some bicycle-tire type "inner-tube" rubber (Butyl-rubber) 26" wheel-size which I hand-cut 1/2" sections of.. to fit the width of my wheel, for "tires".

Cars-Stars 2019 "Rodd-E-Liminator" Config10

Then I cut some extra "tires" to experiment with stickier tread-compounds.. in case I had traction-issues.

Cars-Stars 2019 "Rodd-E-Liminator" Spare-13

If I still experience "wheel-spin" with the stickiest 1/2" width tread-compound.. I have the means to increase the traction-surface by 100%
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Post  roddie on Sat Apr 06, 2019 9:40 am

Here's a 2x width version of my wheel/tire which should have been posted here.. rather than creating the "PHATT TYRE" thread..  Embarassed

Cars-Stars 2019 "Rodd-E-Liminator" Phat-t15
Cars-Stars 2019 "Rodd-E-Liminator" Phat-t14

This is an assembly of two of my 1.437" diameter flywheels oriented with their flat-sides facing each other. Note that the engines' drive-washer fits inside the inner flywheel. I'm hoping that this will help with balancing.

Cars-Stars 2019 "Rodd-E-Liminator" Phat-t13

If the assembly spins out-of-balance.. I can try re-mounting the tire. It fits very tightly on the wheel assembly. The wheels actually have to be assembled-together (mounted to the engine) in order to mount the tire. I doubt that I'll have any issues with the tire coming off due to centrifugal-force.

I'm using a Tee Dee style aluminum spinner for a "hub".. because it works well with my elec. starter.
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Cars-Stars 2019 "Rodd-E-Liminator" Empty Red-wheels/Phat-tire

Post  roddie on Mon Apr 15, 2019 7:17 pm

Cars-Stars 2019 "Rodd-E-Liminator" 20190432
Cars-Stars 2019 "Rodd-E-Liminator" 20190433

I LIKE the idea of this double-wide (26mm) direct-drive set-up.. but it might not perform well on rough-pavement. The "tire-material" is thin/butyl-rubber.. which might run really well on a smooth-surface. A stray pebble on the circuit, could cause wheel-spin.. and subsequent model spin-out.

Cars-Stars 2019 "Rodd-E-Liminator" Phat-t16
Cars-Stars 2019 "Rodd-E-Liminator" Phat-t17
Cars-Stars 2019 "Rodd-E-Liminator" Phat-t18

More paint-work/fuel-proofing needs to be done to the car-body, before I can even free-run this little gem.. but the free-run will be fun. I'll try to get a video of that.. I need to test this direct-drive configuration.. to see if the engine will continue to run after a "drop-launch".. or whether it will need a "push-start". The "latter" would require on-board ignition for a glow-engine.. but we can engineer that.. if need-be..
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Post  NEW222 on Mon Apr 15, 2019 7:59 pm

It's getting colored...... Can't wait to see the finished product!
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Post  getback on Tue Apr 16, 2019 9:52 am

Coming right along as the clock ticks!! I got to get some work on my stuff Today !!! Old Bugger
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