Scaleauto Viper build......finished !!

[chrisguyw]

Hi Folks. I was asked to build a Scaleauto Viper for use in a GT class (wood track) series, and here is what I have come up with.

The tracks are all relatively short, wood, and somewhat technical, so the 10+ grams of additional weight of a long can motor (vs. a "130" ) are detrimental , and ,geared properly, the power of the Piranha (which is what I installed) is more than enough for straights up to 15Ft+. While the Scaleauto pod is OK, the Slot-it pod is certainly more rigid around the bushing/motor box area, and for this reason it was substituted. For some reason the rules in this class stipulated that the original motor configuration (anglewinder in the Scaleauto) must be maintained, so a Slot-it anglewider pod it is.

Typically, anglewinder pods are designed for long can motors, with spacing to use small dia. spur gears to achieve the low numeric ratios that these motors like........however a "130" is a different animal, and generally they like higher numeric ratios, so in order to accomplish this, I needed to use a 10T 6.5mm pinion, coupled with an 16.5mm MRSlotcar spur. As luck would have it, the width of the bushing carriers on the Slot-it pod would not allow this,......so I removed the bushing holder "fingers" reamed the holes, and installed some single flanged oilites. Not only did this solve my width problem, the oilites are much more precise than the "moveable" bushings in the Slot-it pod.

There are urethane washers on the top and bottom of the pod lugs, and the pod is held in place with machine screws and Nyloc nuts. (A thin piece of the bottom of each pod lug was removed so that the pod bottom sat flush with the chassis plate......the Nyloc's also allow precise pod adjustments to be made, without any fear of losing typical pod screws.

I have been using this method of pod attachment for a few years, using some locally made urethane washers, and I am happy to say that I have noticed that SCC has had some made, and they are available from them....as well as the Nyloc nuts.

Anyway, all bolted together, the car's performance is very impressive....one of the best performing plastic chassis cars I have done.

On to the "white kit" body...........figuring out where all the little bits go, and painting the bugger is not my favourite part !!!

Cheers
Chris Walker

PS I am always amazed at how much dust/carp is shown up by my macro lens.......looks clean to my eye ;)

[nhdungeonracer]

[Rleog]

Chris,

How is the end bell section of the Piranha secured to the motor mount?

Bob G

[chrisguyw]

[Modlerbob]

I have made a similar modification to a ScaleAuto Viper by installing a 21.5K Piranha motor from SCC. Mounting the can end with the screws provided holds the motor securely in place. Using this motor tamed what was a wild beast. My track is 55' long with the longest straight being 12'.

[ConrodJo]

So what tooth number is on that spur? It looks to have a very wide boss.

Just wondering why you couldn't accommodate a gearing ratio with the original SA gears, or Slot.it GA gears, which have narrower bosses.
That would have saved the need for changing the gimbals to the one-flange oilites.

[chrisguyw]

[munter]

[chrisguyw]

[chrisguyw]

I finally got around to painting the "white kit" Viper............it is a fantasy livery, and, uses some decals I had lying around.

A combination of Tamiya "Brilliant Blue" and "Bright orange"........the orange is more vibrant in the flesh.

Cheers
Chris Walker

PS The front headlight lenses did not really fit all that well, and did not look great, so , I painted them flat black.........a "daytime" only version of the Viper ;)




The bloody Macro lens pics up all the mistakes.......will need to clean up a little paint around the left rear gas filler cap !!

[chappy]

Nice job Chris
Bob

[GRUNZ]

Interesting setup. I am curious to see the screws that you used to fix the pod to the chassis: do they allow the pod to have side-movement?

Devis3D was making a 3d pod that would allow a shortcan to be installed in a AW configuration.
I hate using glue to fix my motors to pod...Is there any reason why you didn't use any adapter like this one: http://www.armchairracer.com.au/worksho ... or-adaptor

[PetesLightKits]

[chrisguyw]

[chrisguyw]