[steve burrMember]

Looked like a good ride apart from the injuries. Hope you all heal well.

Ian Im sure the 690 doesnt need any more fettling, hope you heal quickly and actually get to use it.

[steve burrMember]

Thanks Nick,

Just a little bit off their advertised 2600.

[steve burrMember]

Sleeping bags for the normal sized guys.:whistle:

I dont fit in standard size sleeping bags, no way I can get my shoulders in. Found a good solution here:-

http://www.bigagnes.com/Products/SleepingBags

They make oversize semi rectangular bags (similar to mummy but with plenty of room) with no fill in the bottom. Used with an exped or the like they are big, plenty warm and comfortable while saving packed size and weight.

[steve burrMember]

Thanks Nick, that would be awesome.

Only a few inches taller than you so hope it wont be a prob. I normally try to buy a tent that is longer than necessary for two reasons.

1. I’m claustrophobic and tents with walls that are close to my head make it hard to sleep.

2. I woke up one night as I had my feet hard up against the end of the tent, meant the rain could come in at that end and soak my down sleeping bag, not a pleasant night.

[steve burrMember]

Hey Nick,

Am currently tossing up between this tent, the MSR Hubba Hubba and a Big Agnes Copper Spur. If this one is near the dimensions it claims of 2.6 x 1.2m along with the price its a clear winner. Any chance you could get some measurements of the inside of the tent? Length and Width of inner only. Blackwolfs measurements for their gear are done by eye I think.

If anyone knows of someone in Sydney who stocks it even better, I have spent 45 minutes on the phone trying to find one.

Thanks,

Steve

[steve burrMember]

Quick bit of light reading

http://www.osti.gov/bridge/purl.cover.jsp;jsessionid=4E1A0A9C33D4CCC11D17F3F5CC48DDE9?purl=/10173808-qsEerw/

paper linked on here states that fatigue of fasteners is not changed by tensile strength.

from arp site regarding elasticity of fasteners

http://www.arp-bolts.com/Tech/TechMetals.html

It is not a be all and end all to the argument, but Im sticking with high tensile.

[steve burrMember]

My new footpeg bracket has arrived. I knew when I ordered it that it had superseded, now I have it I can see what has changed and that they have adressed one of the issues.

If you take a look at the photo the stalk behind the rear hole is a lot thicker now. This will address the bending issue, whether its enough or not time will tell.

[steve burrMember]

xy-transit wrote:

Quote:

am i correct in thinking (somewhere in the memory stores) that the higher the tensile rating, the more prone to shear failure?

as they are meant for load on the length of the bolt i.e. clamping strength not side/ shear load?

Rough rule of thumb for standard type fasteners is the shear strength is around 60% of tensile strength.

[steve burrMember]

I could well be off, but. The tensile strength of a bolt is how much force can be applied (stretching) before it tears apart. In my head if you appply a force approaching the max tensile strength you will elongate the bolt and work harden the material, dramatically reducing the tensile strength. So the idea of using a lower tensile bolt to allow it to stretch and take the movement seems counterproductive. Also the amount of force required to stretch and fatigue a 12.9 grade fastener would surely exceed the 8.8s yield force.

From the posts above I have no doubt Moto can shed some light on this. If not from time to time I work with mechanical engineers, I will harass one of them with the question

[steve burrMember]

Have been looking around the net at this problem and fasteners.

I think the root of my troubles was with me straightening the bracket in the first place, I probably stretched the bolts creating a weak point for them to fail. I should have straightened the bracket then removed it, file both faces to ensure they are true and replaced the bolts.

As for fasteners I reckon your ARP bolts are in fact 180 000 PSI, they are also now available in 190 000 PSI. As they are a heap easier for me to get hold of I am going to go with Unbrako set screws, their 12.9 grade screws have 190 000 PSI tensile strength, so presumably (I aint no engineer) their sheer strength should be as good as the ARP.

I couldnt find specs on the ARP hardness, but then again I dont believe this will be a issue in this application. Please correct me if Im wrong.

Steve

[steve burrMember]

Calling LC4skin.

How did you go with this? You may remember we talked about this problem when we went on a ride with Garry to find the plane near Meryla. I thought I had mine licked with 12.9 grade bolts. After today it seems not.

Story with mine is that the bike was dropped hard before I bought it and the bracket was bent. I straightened it and replaced the bolts. It droops as time goes on and needs rebending, not a major prob. However today I stuffed up a small jump off a ledge badly and ended up coming down hard with all my weight on the left peg, bolt snapped clean off. Also because I rode around with only one bolt and the bash plate holding peg in place it has elongated the front hole and cracked the web.

Want to know how you went so I can decide how to proceed.

Thanks,

Steve

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