12 replies to this topic

[mymonsterbeetleisbroken]

mmmmmm aluminium pinion gears []

my clod has a taste for these, but it seems to chew the front gearboxes pinion faster than the rear [8)]

i've just fitted another one in the front, thanks to tc member twinset ive got a little stock of pinions [:)]

but this was now the second pinion my clod has completely worn, there was hardly a tooth left on it!

the rear gearboxes pinion doesnt wear nearly as fast, about half as quick really before the pinion becomes a desplay piece with other broken bits [:)]

so whats causing the front to wear faster than the rear gearbox?

is it a problem with the spur gear, the mesh or something else?

the gearbox is very smooth without the motor fitted, and now with a new pinion its quiet and rolls freely. give it about 50 more runs and it'll be lumpy again though!

[TWINSET]

Modelsport stock 32p 13t pinions!
http://www.modelspor...on&ItemID=13773

Dunno what material they're made of, give 'em a ring []

[robysoldtamiya]

I think you should check your spur, it could be wear out and eat your pinions fast.
Roby

[Martin71RS(2)]

tower hobbies ?robinson? steel pinions 32p13t just a few $$...

http://www2.towerhob...p?&I=LXEW98&P=7

Martin

[mud4fun]

I've switched to steel pinions in most of my cars but be warned:

The aluminium pinion wears out quicker because it is softer than the spur thus preventing damage to the spur. If you switch to steel ones then the spur will begin to wear faster. Generally it is such a quick and easy task to change a pinion rather than a spur maybe that is why Tamiya used aluminium in the first place?

I've also noticed that my cars 'whine' less with steel pinions!?

[mymonsterbeetleisbroken]

thanks for the quick responce guys []

i think i'll stick with the ally ones if the steel pinions wear out the spur gear faster, a pinion is cheaper than a new gear set [:)]

when i has the motor off i had a peep inside the gearbox and compaired the spur to a brand new one, and apart from being covered in grease it still looks new!

its still strange how the front gearbox wears out the pinion faster than the rear gearbox! o well lol

[Renco5012]

quote:

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Originally posted by mymonsterbeetleisbroken


its still strange how the front gearbox wears out the pinion faster than the rear gearbox! o well lol

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It might be because the front wheels tend to lift off the ground slightly when you first hit the gas and they're usually the wheels that pull the truck up and over things, so the front pinion may get more stress put on it than the rear one. The front pinion on my Clod had worn teeth on one half of the gear when I replaced it, which I thought was pretty weird [8)]

[mymonsterbeetleisbroken]

quote:

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Originally posted by Renco5012

quote:

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Originally posted by mymonsterbeetleisbroken


its still strange how the front gearbox wears out the pinion faster than the rear gearbox! o well lol

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It might be because the front wheels tend to lift off the ground slightly when you first hit the gas and they're usually the wheels that pull the truck up and over things, so the front pinion may get more stress put on it than the rear one. The front pinion on my Clod had worn teeth on one half of the gear when I replaced it, which I thought was pretty weird [8)]

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yea my first mashed pinion gear had no teeth left on one side too [8)]

[robysoldtamiya]

Renco: I don't agree. Most load goes back in every situation (except when you're going down a hill). Just touch both motors after some runs and find what hottest[xx(]

Mymoster.....: are you running a manual esc ? I'm just thinking you're using too much your brake, or even don't have brake at all and simply brake by going backward. This will load a lot front pinion.

you both are saying your pinions are worn out only in one side ?
if you mean all external part is worn out while the closest to motor is still new, this mean you have to check distance from motor before secure them to motor shaft.
(I hope I understood well what you said[8)])
Roby

[mymonsterbeetleisbroken]

yea roby i get that,

what ive noticed is that the wear wasnt even around the circumfrence of the gear, some whole teeth wear more worn than others, but i gess this happened just before this perticular pinion actually locked up my gearbox! i always make sure the pinion is on the right part of the shaft, i messed up my monster beetle by not putting its pinion on rite [:I][}:)]

i'm using the msc in my clod, i dont normally break by putting it a little in reverse but i do like my forward and backward wheelies. [:P]

but the rear gearbox takes the same strain when doing a normal wheelie, so this really cancells out the backwards wheelies. and it spends more time being slammed from forwards into reverse so really i should be nackering more rear pinions!

the mystery deepens [:P]

thanks for the comments guys [:D]

[mr_pushrod]

I'd get steel, when you think about it the aluminium pinion wearing deposits ally all over the spur creating a grinding paste that wears it quicker! Also when the gears go spikey you are incresing wear. I would therefore argue you would get less wear with steel.

[robysoldtamiya]

mymonster...:
'...i always make sure the pinion is on the right part of the shaft...'
You don't have to put it on the right part, you have to align it with spur gear. I f you don't have the tool included in Clod kit to install pinion on motor, just put your motor in the gearbox without gear cover, this way you will see pinion and spur. Move pinion on shaft so that both pinion/spur outside faces are aligned.

'...and it spends more time being slammed from forwards into reverse so really i should be nackering more rear pinions!...'
You'r wrong! Going from forward into reverse will wear out front pinions!

Roby

[mymonsterbeetleisbroken]

yea i do use those pinion gear tools, like i said i always make sure its lined up with the spur by using the tool, thats what i meant by putting it on the right part of the shaft []

yea what i wrote there was complete rubbish lol [:I]

what i should have wrote before was it spends more times being slammed INTO forwards FROM reverse [:I] i typed it wrong lol