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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Main Shaft After Crash
05-26-2007 12:59 AM  13 years ago
AirWolfRC

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42½ N, 83½ W

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The indicator is an Interapid 312B-2 dial test indicator with 0.0005" resolution and goes for about $200 today. The plate & V blocks I made out of plate 6061 aluminum, but anything to hold the indicator and V blocks will do.

I modified a C clamp to let me use the indicator to check shafts and such on the heli. I can also check the main shaft on the heli with this.
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05-26-2007 01:18 AM  13 years ago
RappyTappy

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Encinitas, CA

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A $200 indicator that has .0005 resolution? dayum, your helis must run smoother than a babies bottom! Still buyin' and flyin' then crashing and cryin'
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05-26-2007 01:20 AM  13 years ago
classic

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All over the place!

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I have a Federal C5M .0005 dial indicator, I just like your base you made. I wonder, if using a flat vise and two hard blocks of wood, how that would work for bending them back into shape?

Normally, I always just replace when in doubt, but I could see trying to bend if there was a stocking issue or the price was just to high.
but the indicator is nice for putting on fans.

http://cgi.ebay.com/Precision-Pro-M...1QQcmdZViewItem
Here is a similar multi-arm mount to yours, too bad I cant just buy the mounting hardware!
Which is worse, ignorance or apathy? I don't know and I don't care!
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05-26-2007 10:21 AM  13 years ago
TrexRookie

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San Francisco, CA

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how the hell does a doohickey like that straighten out your main shaft?
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05-26-2007 04:24 PM  13 years ago
RappyTappy

rrProfessor

Encinitas, CA

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What you do, is use a drill press to bend it back straight. We're only talking about minutely bent main shaft here, any shaft that has a good vissable bend to it is not salvagable for use in a heli again.Still buyin' and flyin' then crashing and cryin'
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05-26-2007 04:32 PM  13 years ago
cannibal440

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cookeville, tennessee USA

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i replace my shafts every time i crash. but for me i can make any size shaft for less than $1.75. i made a jig and i go to the local industrial supply store, spend a whopping $5.50 on a 3 foot oil hardened 10mm shaft and i cut them down to legnth then insert an original copy in the jig to set the position of the holes then just shove a new shaft in the jig and i can spit out brand new shafts in no time, no matter what the make of heli is, for dirt cheap and in some cases my shafts are even higher tolerance than the factory ones.only way ill ever make the jack is if i work at a cheese factory
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05-26-2007 06:01 PM  13 years ago
rc4stroker

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Spartanburg SC USA

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Main Shaft
This is the one that we pulled out of my Raptor 50 last weekend. I think it is trash?

Neal Hayes
Spartanburg SC
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05-26-2007 06:10 PM  13 years ago
AirWolfRC

rrProfessor

42½ N, 83½ W

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how the hell does a doohickey like that straighten out your main shaft?
I put the whole assembly in the press.
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05-26-2007 06:33 PM  13 years ago
Eleven_Bravo

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Salisbury,NC

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I will check my shafts if they dont look bent I will spool up the heli if it vibrates any they get replaced. This is of course if they are still straight enough that you cannot tell by rolling them on a flat surface.

I will not fly a heli that vibrates from something being bent It's embarrassing to me. It says im doing a shixxy job of maintaining my heli.
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05-26-2007 07:17 PM  13 years ago
cudaboy_71

rrElite Veteran

sacramento, ca, u.s.

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i've heard of people using arrow shaft straighteners on main shafts.

http://bowhuntingstuff.com/product/6535
if it ain't broke, break it.
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05-28-2007 02:07 PM  13 years ago
ChristianM

rrVeteran

Oslo, Norway

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You can buy a lot of main shaft for a $170.

Christian
Burn fuel, be happy
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05-29-2007 05:23 AM  13 years ago
cannibal440

rrApprentice

cookeville, tennessee USA

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how many shafts come in a lot?only way ill ever make the jack is if i work at a cheese factory
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05-29-2007 03:27 PM  13 years ago
willy000

rrNovice

Melbourne,Australia

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My Raptor titan has had at least 8 crashes 3 were bad, spindles
and main blades were changed every crash ,some plastic head parts
changed as well but the steel main shaft has not bent yet and 3 of
the crashes were hi speed and very high drops out of the sky every
thing else broke the the main shaft still works good.
with balanced blades the heli dosent shake flys great.........
BUY my twister 3D has the smallest crash needs new main shaft,
spindle,blades and main gear set...................
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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Main Shaft After Crash
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