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HomeAircraftHelicopter3D Printing - Print Your Parts › main gear for 550 size
04-30-2017 01:24 PM  15 months agoPost 1
motorrc

rrApprentice

canton ohio usa

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Has anyone been able to print a main gear for 550 or greater size heli that lasts more than 30 seconds?

if it doesn't fit, make it fit.

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10-30-2017 08:22 PM  9 months agoPost 2
RM3

rrElite Veteran

Killeen, Texas - USA

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I cut them on a CNC... plastic printing hardly ever produces parts that are structurally better than one machined from solid stock and the surface finish is critical as is the plastic used. Granted this may not really be true for for most high end professional printers though.... but 3D printers of that quality are not affordable nor practical for hobbyists.

here is an example of two gears I cut using CNC sherline equipment for my gasser a While back from black acetal (like Delrin)... still flying them to this day.... total time from raw stock to finished part is well under 30 minutes.

showing a preference will only get you into trouble, 90% of everything is crap...

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10-31-2017 12:31 AM  9 months agoPost 3
motorrc

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canton ohio usa

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what would you charge to make a gear similar to the ones pictured?

if it doesn't fit, make it fit.

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11-03-2017 03:57 PM  9 months agoPost 4
RM3

rrElite Veteran

Killeen, Texas - USA

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Depends on the gear... straight cut are the easiest, for these (Century Radikal) I used to charge about $60 for the set, and I made no profit once time was taken into account (Drawing, CNC coding, test and setup) though the actual cutting is fast once the initial work has been done. So I no longer make parts for sale as most people are used to paying $20 per gear from Heli manufacturer and nearly all scoff at what it cost to actually have a shop make one

showing a preference will only get you into trouble, 90% of everything is crap...

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11-03-2017 04:49 PM  9 months agoPost 5
motorrc

rrApprentice

canton ohio usa

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makes cents (I apologize for that, just couldn't resist)

if it doesn't fit, make it fit.

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02-22-2018 02:04 AM  5 months agoPost 6
Dirtpen

rrNovice

Illinois

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Those look in photo, great job ,dang!

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07-10-2018 01:29 AM  40 days agoPost 7
artimus

rrKey Veteran

Buckley WA

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I would love to have a main crown gear for the tail drive system on Synergy N9.....i have one good one left and cant find any more

Fly Hard......Team Viagra

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07-10-2018 01:34 AM  40 days agoPost 8
JuanRodriguez

rrProfessor

The Villages, Florida

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You wanna play, you gotta pay !! LOL !!

Been there, done that and old enough to know better.....

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07-10-2018 03:08 AM  40 days agoPost 9
Magnumeng

rrVeteran

Good old NC

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RM3, what cnc mill you using?

TDR, Kontronik Kosmik Cool 200, Kontronik 750-56, CGY750,
Team KBDD

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07-11-2018 09:30 PM  38 days agoPost 10
JuanRodriguez

rrProfessor

The Villages, Florida

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Magnumeng
RM3, what cnc mill you using?
Answer is in post #2
RM3
here is an example of two gears I cut using CNC sherline equipment

Been there, done that and old enough to know better.....

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07-12-2018 12:58 AM  38 days agoPost 11
Dirtpen

rrNovice

Illinois

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Dang!

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07-12-2018 01:04 AM  38 days agoPost 12
Dirtpen

rrNovice

Illinois

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The n9 was great, but that gear sh:*TT. Bound to fail. I have one also. I'm thinking mod the n9 to take T-Rex 700 800 tail parts.i don't have the money sand that was just a thought. Love CNC, printing parts. Awesome.

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