Talk:Jesus nut

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Contents

[edit] Vote for Deletion

This article survived a Vote for Deletion. The discussion can be found here. -Splash 22:41, 12 August 2005 (UTC)


[edit] ...

"The exact cause was never determined, but it is likely that the Jesus nut failed for reasons unknown [1]."

This sentence makes no sense at all. —The preceding unsigned comment was added by 130.160.144.102 (talk • contribs) 02:12, 31 January 2007 (UTC).

Makes perfect sense to me. Feel free to suggest alternatives. --Turbothy 00:03, 13 February 2007 (UTC)

[edit] Needs a picture

What's wrong with just posting the picture from the link? Or if that won't do (dang copywrite laws), perhaps a picture from somewhere else should be included in the aricle. Kevin 23:24, 4 May 2007 (UTC)

[edit] A single jesus nut?

It would be extraordinary for one bolt to hold on the entire rotor blade assembly in a full-size helicopter. My understanding is that each bolt holds one rotor blade: http://everything2.com discussion of jesus nut/bolt The 'Huey' UH-1 Iroquois helicopter link does not mention a jesus nut/bolt anywhere on the page. Can anyone confirm this - or name another helicopter that genuinely employs a single Jesus nut/bolt?

I wonder whether this image ('Pat inspects' - the 8th image on page) is significant? wingsandrotors.org website

'Pat' is quite clearly looking at the central rotor shaft of the machine, rather than any individual blade attachment point.

Centrepull (talk) 18:32, 23 November 2007 (UTC)

First, it's not a bolt, it's a nut. I can't speak for other mfr aircraft, but for most of the Bell 2-bladed systems, the Jesus nut does hold the entire rotor system on. I'll try and upload pics of the 222's Jesus Nut (I've got one on my desk as a paper weight). The nut is about 5" in diameter, and it gets torqued to 675 foot pounds (yes, that takes a really BIG torque wrench!) There was even an infamous crash where a mech left the Jesus nut off a JetRanger. The friction between the splines of the mast and the rotor head held everything together during a flight until the pilot practiced an autorotation, which then unloaded the rotor system (the rotor began driving the transmission, instead of the transmission driving the rotor), eliminated the friction, and the rotor system came off...killed both on board, one of which was the mech that made the mistake. Unless someone posts a definitive answer to your Huey question, next week I'll try to climb up on our neighbor's UH-1 and get a photo. As for your comment that each bolt holds a blade, that's incorrect. Those are called "blade bolts". AKRadeckiSpeaketh 23:04, 23 November 2007 (UTC)
Pic's up now. AKRadeckiSpeaketh 23:18, 23 November 2007 (UTC)