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03-09-2008 05:53 AM  10 years agoPost 1
crash n' burn99

rrApprentice

ottawa, canada

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I recently bought 3 ds8311 jr servos to put in my vibe 90, on the hh web sit and jr site it shows the servos having plastic gears and plastic splines or output shaft "however you call it". The ones I got have metal splines on them, anybody else notice this, or did I get lucky?

Do proctologists chew there finger nails when there nervouse?

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03-09-2008 11:29 AM  10 years agoPost 2
DS 8717

rrProfessor

Here wishing i was somewhere else

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The output shaft is metal,the other gears are plastic. The 8411 has all metal gears. The plastic gears are suppose to last longer before they get any play,the 8311's were designed for helicopters.

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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03-09-2008 11:48 AM  10 years agoPost 3
ronaldc

rrApprentice

Sandwich,IL.

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I bought my DSS8311's last fall and they have metal output shafts also,even though their specs didn't say they did.

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03-09-2008 12:14 PM  10 years agoPost 4
hootowl

rrProfessor

Garnet Valley, Pa.

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Maybe you guys have modded servos if you bought them used?
Or maybe Horizons website is not accurate and they changed the 8311's?

DS8311 are supposed to have all plastic (nylon) gears. Curtis Youngblood came up with a speedup mod that many of us did. We replaced the plastic set with the DS8417 metal gearset. I believe this effectively makes them DS8317's.

Caution: Anyone reading this and plan on speeding up your 8311's with 8417 gears take note... do not change out the plastic gear at the motor output. If you do you will crash. The 8417 replacement is a slightly smaller gear and it will jump teeth. You replace all the gears except that one.

DS8311 .16 @6v plastic gears

DS8317 .12 @6v metal gears

Here is a search

Here is what Horizon sells as the DS8311 gearset. I bought them before and they are all plastic.

This is the DS8417 metal gearset for speeding up the 8311...

On edit.... I have 8311's in my Vario Acrobatic. yes they have metal output gears...

Wolves don't lose sleep over the opinions of sheep

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03-09-2008 12:52 PM  10 years agoPost 5
DS 8717

rrProfessor

Here wishing i was somewhere else

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The 8311 comes with a metal output gear,all the ones i bought new did.
You can install the 8417 gear set and you will have the same specs as a 8317 but the motor is better than the 8317.

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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03-09-2008 01:08 PM  10 years agoPost 6
hootowl

rrProfessor

Garnet Valley, Pa.

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MR10X,

I wonder why Horizon shows all plastic on their site with no mention of the metal output. Guess they are behind in updating. I found a picture of one of my 8311's and yes in fact it has the metal output. I get the feeling JR still packages the ALL nylon gearset knowing you will most likely never need to change the metal output.

This is my factory... stock 8311 with the broken gears..

Wolves don't lose sleep over the opinions of sheep

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03-09-2008 01:15 PM  10 years agoPost 7
DS 8717

rrProfessor

Here wishing i was somewhere else

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I havn't had to buy a gear set for the 8311 yet so i dont know how they come. I dont always trust pictures,they are not always the correct picture. I have never stripped the metal out put gear. I have converted some 8231's with the 8700 and 8417 gears sets before but they dont have a lot of torque,but they are dog slow stock .23 sec.

YOU ONLY LIVE ONCE..IF YOU LIVE IT RIGHT THATS ALL YOU NEED

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03-09-2008 01:47 PM  10 years agoPost 8
hootowl

rrProfessor

Garnet Valley, Pa.

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I had the new 8311 replacement gearset. They came all plastic.

Wolves don't lose sleep over the opinions of sheep

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