16 replies to this topic

[Isaac S.]

I know that the SS-81 was rated at 18v and the SS-91 was 12v. The markings are gone so what do the different armature windings look like. Is one bigger? Were they balanced?

 

PS: Where can I get 1/8" pinion gears?

[don.siegel]

Yep, the Globes were balanced. Don't have an SS81 and probably wouldn't take it apart anyway, but I assume there's just a difference in winding: more or less turns, maybe a different wire size. 

 

If you're going to run it, you'll want to gear it very low, about 5:1 if possible, the SS91s I've tried don't have much in the way of braking, odd when you turn the arm, since it really clunks. 

 

I've got a bunch of 1/8" pinions if nobody in the States can help, or keep an eye on ebay, they do come up. 

[Isaac S.]

Okay thanks Don. The low gearing is interesting. If I get it I will probably get it going. 

[MSwiss]

You're going to shoot for 5 to 1, expect to run some big tires.

That was the well known problem with the Versitec.

A 10 tooth pinion was the smallest they had and you couldn't get them geared right.

Not for serious competition, anyway.

A friend of mine was sponsored by them.

He was a terrific chassis builder, but it was a no-go, running that motor.

If you're more concerned about the car running well, versus being 100% original, you should turn the shaft down to a smaller size, like they do in Eurosport.

[Isaac S.]

I will probably go with original. I may be able to source some better parts now that it is 2020. 

[MSwiss]

The light bulb just went on.

He would of been running the SS-101, flat can motor.

Still the same problem.

It's probably not physically possible to make a smaller tooth pinion, with that big of a bore.

[don.siegel]

Even with 10/50 or 48, you can still fit tires about 1-1/8", which is pretty reasonable for these kinds of cars. 

 

Don 

 

[MSwiss]

Don,
In my mindset, I consider 1 1/8", huge.

In that era, it was probably average for non- super-competitive cars.

Do you still have the SS-101, I sold you?

Have you ever run it?

[Ramcatlarry]

It makes sense to me to look for 64 pitch gears instead of 48 pitch (Weldun or?) since the tooth form is less likely to be hurt by boring a pinion out to 1/8".

[Isaac S.]

1 1/8 is fine for me. Should I go with sponge or silicone tires? I haven't had much luck with sponge in the past but it might work well with something like this. 

[Isaac S.]

I'll be doing this for the fun and the greatness of having a Globe powered car. I won't be doing too much in the way of competition.

[Isaac S.]

To me the SS-91 is the holy grail of motors and has to be the top on my list. A nice Champion has to be up their too with a couple Muras. 

[don.siegel]

For the tires Isaac, depends entirely on your track: spongies will be the best performers, but generally require goop and will dry out. Silicones will perform well on a clean, smooth track, but don't always play well with other tires. For our vintage races here, we've generally standardized on urethane tires, to keep the traction equation as equal as possible. They last longer, like some silicones, but are probably not as fast on wood tracks, and may have traction troubles on slicker tracks. On plastic tracks, mostly for 1/32 cars, I've found them very effective. 

 

Don 

[Eddie Fleming]

I am thinking RC cars use a 1/8 pinion.

 

I am not sure how small you can get.

[tonyp]

RC is 1/8. I don’t remember how small but maybe like a 13 in 64 pitch.


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[Isaac S.]

Don, I use urethane's on my home track but the hobby track I go to has a pretty slick wood track and I don't think anyone there uses urethane tires. That might be why I haven't been good with sponge. Should I just rub some sunscreen into them if that is what I end up with? 

[don.siegel]

I haven't used sponge tires in awhile, so not up on what's being used these days Isaac. I'm sure somebody here can give you more up to date advice! 

Don