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Post by GTS on Feb 7, 2020 19:45:35 GMT -7
This might very well be common knowledge but was wondering the significance of the cluster gear on the center 3 gear chassis in the picture. Out of the 12 AFX chassis I dug out of storage, 2 of the chassis have that same cluster gear which is similar in appearance to the 4 gear cluster gear on the right. The rest are all like the 3 gear on the left. I googled for some info on it and came up with zero. Just curious what the history behind the cluster gear on the center chassis in the picture is.
Thanks.
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Post by Deleted on Feb 7, 2020 22:53:52 GMT -7
my guess .....
notice the plastic idler gear on that chassis you are asking about.
generally that idler gear was only used with the sound box chassis, so ....
the cluster gear might have been that way to help insure that the idler gear didn't "float" and get jammed.
I think those sound box chassis/cars were called "sonics".
"overhead" chassis with the flashing lights might have used similar cluster gear?
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Post by GTS on Feb 8, 2020 7:45:10 GMT -7
Thanks Al for the feedback. Here is some more info, might not mean anything  . In the photo below, the center chassis is the same chassis in the center of the photo above. I can not guarantee that the 'sonic' idler gear originally went with that top plate. I had 3 chassis of the 12 that didn't have idler gears so did some swapping around during initial testing. The chassis on the left has that same cluster gear plus it was set up for headlights exactly like the chassis on the right. I removed the bulb & wires though. Thought about drilling out the rivet on the bulb holder but didn't want to get 'dinged' for drilling on the chassis as I'm hoping this chassis on the left becomes a 'stock' entry for Jeff's upcoming race. My knowledge is pretty limited on these but have looked at a lot of pancake chassis photos over the last couple years and don't remember seeing any cluster gears like this on an AFX chassis. Still curious about what it all means so any further ideas about it will be appreciated. Thanks!
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Post by AJR on Feb 8, 2020 14:04:57 GMT -7
Thanks Al for the feedback. Here is some more info, might not mean anything . In the photo below, the center chassis is the same chassis in the center of the photo above. I can not guarantee that the 'sonic' idler gear originally went with that top plate. I had 3 chassis of the 12 that didn't have idler gears so did some swapping around during initial testing. The chassis on the left has that same cluster gear plus it was set up for headlights exactly like the chassis on the right. I removed the bulb & wires though. Thought about drilling out the rivet on the bulb holder but didn't want to get 'dinged' for drilling on the chassis as I'm hoping this chassis on the left becomes a 'stock' entry for Jeff's upcoming race. My knowledge is pretty limited on these but have looked at a lot of pancake chassis photos over the last couple years and don't remember seeing any cluster gears like this on an AFX chassis. Still curious about what it all means so any further ideas about it will be appreciated. Thanks! Gale drilling the rivet and removing the light assy. would be allowed. The "no cutting or drilling" is really intended to mean lightening or modification of some kind. We don't run lights here so it would be all good for the race. |
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Post by GTS on Feb 8, 2020 15:44:45 GMT -7
Gale drilling the rivet and removing the light assy. would be allowed. The "no cutting or drilling" is really intended to mean lightening or modification of some kind. We don't run lights here so it would be all good for the race. Thanks Jeff, appreciate that clarification . |
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Post by Deleted on Feb 8, 2020 19:11:30 GMT -7
Gale, guys who run roundy t-Jets prefer the "Flame Thrower" chassis because of the extra plate. they tighten the rivet and think that there is less resistance because of the additional metal to metal contact in that area. I don't know for sure, but many ECHORR and FRAY guys use the lighted chassis when they can. yes .... they remove the light bulb and wires. oops, I just now realized that you mean to remove the light bulb holder. sorry .....Never Mind ..... LOL  |
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Post by gnome on Feb 9, 2020 15:40:49 GMT -7
Im thinking Al's wright its probably a magna sonic with out the noise box i have a couple and thats what mine look like
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Post by GTS on Feb 9, 2020 17:12:52 GMT -7
Thanks everyone for your input. It seems it was used to keep the idler gear from lifting on the magna-sonic cars. Makes sense. With all the parts swapping that went on years ago, I hadn't a clue what was what. I do remember that they only did a couple laps and the noise maker mysteriously disappeared  . I also learned that, technically, it's called a 'driven gear' and that when combined with the drive pinion it's called a cluster gear. Who'd a thunk it? Thanks again! |
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Post by dave632 on Feb 10, 2020 14:50:12 GMT -7
That is definitely a Magnasonic idler gear and it is readily available for low cost at Jag hobbies. The Magna sonic box had a small button which rode on that idler gear and that is
how it made its sound. If you want to slow a car down a lot put one of those sound boxes on it. You can still buy those sound boxes to.
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Post by dave632 on Jun 2, 2020 7:46:38 GMT -7
I had a discussion with some guy on a HO slot site about the Magnasonic. I said the car will lose speed and ET with
the sound box on and he insisted it would not. I surely have tested those with and without and every one slowed in both
speed and ET. How could it not??
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Post by mazda on Jun 2, 2020 10:47:36 GMT -7
The sound box must slow a car. It causes friction and puts slight pressure on the gear.
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Post by dave632 on Jun 3, 2020 11:47:04 GMT -7
Right Clive, seems the guy I was having a discussion with does not believe in the laws of physics.
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Post by gibbo61 on Oct 2, 2020 15:50:14 GMT -7
I have found 2 afx gearplates with those " driven " gears on them in my barn find. wonder if they can make a difference with gear slop or just add drag to the geartrain
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.
. I also learned that, technically, it's called a 'driven gear' and that when combined with the drive pinion it's called a cluster gear. Who'd a thunk it?
