Dogbone sets - a warning - SV650.org

10-07-07, 05:46 PM

Don't go making your own or buying cheap ones or this might happen

bandit crash 001.jpg

bandit crash 007.jpg

I'm quite handy with my hands and have done a lot of fabrication work in my time, so making new dogbones seemed like a doddle. What happened was pretty much all my own fault because the metal I was given to make them out of wasn't the very strong aircraft grade Dural my mate told me it was - it was common or garden normal alloy, he screwed up and pointed me at the wrong bit of plate. I can't blame my mate, he didn't know that someone had shifted the piles of meatal around.

The dogbones I made lasted 8,000 miles, including a trackday at Mallory, and then broke while I was doing 50mph overtaking a car, resulting in me highsiding and getting thrown 12 feet in the air to land on my ankle. A year later and I'm still recovering from it. Luckily my Bandit wasn't too badly damaged and I kicked it straught and kept using it once I put proper dogbones in, but if it hadn't been the 75,000 mile piece of crap that it was and something decent I would've been really hacked off.

Talking to the traffic coppers who attended the scene they told me they'd seen two or three bikes that had suffered the same thing in their time on traffic duty.

What I should have done was get someone I could trust to make them from high carbon steel, like the originals are, or bought quality ones from a known and trusted supplier...not some monkey who flogs them cheap on eBay.

You've been warned.

10-07-07, 06:26 PM

Quote:

Originally Posted by Lozzo

...

unless I am mistaken, yield strengths:

ali: 50MPa
dural: 400MPa
mild steel: 350MPa

so even mild steel should be acceptable if you consider dural acceptable

10-07-07, 06:30 PM

Cheers for that...will definitely be looking at getting decent quality dogbones for my SV from a reputable source! Wouldn't want to risk injury to myself or to my bike and seeing as I'm a noob I'm extra cautious

dirtydog · 10-07-07, 06:36 PM

Quote:

Originally Posted by LouLou

Cheers for that...will definitely be looking at getting decent quality dogbones for my SV from a reputable source! Wouldn't want to risk injury to myself or to my bike and seeing as I constantly fall off anyway

10-07-07, 06:55 PM

Quote:

Originally Posted by dirtydog

Quote:
Originally Posted by LouLou

Cheers for that...will definitely be looking at getting decent quality dogbones for my SV from a reputable source! Wouldn't want to risk injury to myself or to my bike and seeing as I constantly fall off anyway

LOL

10-07-07, 07:28 PM

Quote:

Originally Posted by Lozzo

Attachment 305

Attachment 306

Wow! That is SOFT! Doh!

10-07-07, 07:33 PM

Standard dog bones are made from Steel, as you've said.

I'd never, ever, use ally in such a high-stress place...

10-07-07, 07:35 PM

that the same metal that suzuki make there bolts out of

(CHEESE)

dizzyblonde · 10-07-07, 07:39 PM

hhhmmmm, i'm so glad dirty dog sent me standard bones when he did, as the ones that came off didn't look like they would hold owt up neither, although stampd JHS, they appeared very suss. dirty dogs proper ones were certainly made of proper metal

quote im indoors:- anyone with aluminium looking bones take erm off....aluminium suffers metal fatigue and fails without warning

10-07-07, 07:59 PM

dont want to sound thick but what are dogbones?

10-07-07, 05:46 PM	#1
Lozzo Guest Posts: n/a	Dogbone sets - a warning Don't go making your own or buying cheap ones or this might happen bandit crash 001.jpg bandit crash 007.jpg I'm quite handy with my hands and have done a lot of fabrication work in my time, so making new dogbones seemed like a doddle. What happened was pretty much all my own fault because the metal I was given to make them out of wasn't the very strong aircraft grade Dural my mate told me it was - it was common or garden normal alloy, he screwed up and pointed me at the wrong bit of plate. I can't blame my mate, he didn't know that someone had shifted the piles of meatal around. The dogbones I made lasted 8,000 miles, including a trackday at Mallory, and then broke while I was doing 50mph overtaking a car, resulting in me highsiding and getting thrown 12 feet in the air to land on my ankle. A year later and I'm still recovering from it. Luckily my Bandit wasn't too badly damaged and I kicked it straught and kept using it once I put proper dogbones in, but if it hadn't been the 75,000 mile piece of crap that it was and something decent I would've been really hacked off. Talking to the traffic coppers who attended the scene they told me they'd seen two or three bikes that had suffered the same thing in their time on traffic duty. What I should have done was get someone I could trust to make them from high carbon steel, like the originals are, or bought quality ones from a known and trusted supplier...not some monkey who flogs them cheap on eBay. You've been warned.

10-07-07, 06:30 PM	#3
LouLou Guest Posts: n/a	Re: Dogbone sets - a warning Cheers for that...will definitely be looking at getting decent quality dogbones for my SV from a reputable source! Wouldn't want to risk injury to myself or to my bike and seeing as I'm a noob I'm extra cautious

10-07-07, 07:33 PM	#7
Gnome Guest Posts: n/a	Re: Dogbone sets - a warning Standard dog bones are made from Steel, as you've said. I'd never, ever, use ally in such a high-stress place...

10-07-07, 07:35 PM	#8
kwak zzr Guest Posts: n/a	Re: Dogbone sets - a warning that the same metal that suzuki make there bolts out of (CHEESE)

10-07-07, 07:39 PM	#9
dizzyblonde Da Cake Boss Mega Poster Join Date: May 2007 Location: On a flying Horse Posts: 9,992	Re: Dogbone sets - a warning hhhmmmm, i'm so glad dirty dog sent me standard bones when he did, as the ones that came off didn't look like they would hold owt up neither, although stampd JHS, they appeared very suss. dirty dogs proper ones were certainly made of proper metal quote im indoors:- anyone with aluminium looking bones take erm off....aluminium suffers metal fatigue and fails without warning __________________ Suzy, yellow 2001 SVS. Kitty, V-Raptor 1000, ZZR1400<<its my bike now Pegasus! Hovis 13.8.75-3.10.09 Reeder 20.7.88-21.3.12 Last edited by dizzyblonde; 10-07-07 at 07:41 PM.

10-07-07, 07:59 PM	#10
lancasterlad Guest Posts: n/a	Re: Dogbone sets - a warning dont want to sound thick but what are dogbones?

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