Anyone know? And is there any reason I shouldn't use stainless cap screws to replace them?
Cheers
no measures but, maybe this helps
http://motowheels.com/i-7774585-corse-dynamics-chain-adjuster-bolts.html (http://motowheels.com/i-7774585-corse-dynamics-chain-adjuster-bolts.html)
Don't know about yours, but, unless my memory is wrong, the inboard ends of the OEM chain adjuster bolts on my aluminum swingarmed '97 M900 each have a small machine screw threaded into them that's pointed toward the rear of the swingarm.
https://www.dropbox.com/s/wmbsk826q3uqv3u/m900%20swingarm.wpd (https://www.dropbox.com/s/wmbsk826q3uqv3u/m900%20swingarm.wpd)
SS bolts, and the ones from Motowheels, do not make provisions for the two machine screws and their associated hardware.
They're M8x1.25, but they're both fully threaded *and* quite long, which will present a bit of difficulty in getting off-the-shelf replacements.
As Cayman said, they're internally threaded for a safety retainer washer and bolt on the inside end.
Thanks all.
Thanks Carlos, I'm familiar with the MW bolts. Just didn't wanna pay $15 for what seems like plain ol', nothin' special bolts.
Nick, about how long is "very long"? it appears they only need to pass through the sliding shoe.
I bet they're 100mm...
Ahh now I feel silly. Says M8X90 right on the description when you punch in the part number. Should've checked...Ducati usually reveals the sizes of their hardware in the item description when you punch it in.
Quote from: Buck Naked on May 04, 2014, 03:01:37 PM
Ahh now I feel silly. Says M8X90 right on the description when you punch in the part number. Should've checked...Ducati usually reveals the sizes of their hardware in the item description when you punch it in.
the ones I have on a plastic pouch do measure 100mm . . . ???
Item #77910242A?
For anyone else's future reference:
Fully threaded 316L stainless bolts, M8X1.25X90 or 100 rated at 100,000psi can be found at McMaster Carr for $2.40 each. I'm kinda tempted by these....http://www.oppracing.com/product_display/9725-lightech-titanium-hex-flange-screw-m8x100-125/ (http://www.oppracing.com/product_display/9725-lightech-titanium-hex-flange-screw-m8x100-125/)
Quote from: Buck Naked on May 04, 2014, 03:43:58 PM
Item #77910242A?
For anyone else's future reference:
Fully threaded 316L stainless bolts, M8X1.25X90 or 100 rated at 100,000psi can be found at McMaster Carr for $2.40 each. I'm kinda tempted by these....http://www.oppracing.com/product_display/9725-lightech-titanium-hex-flange-screw-m8x100-125/ (http://www.oppracing.com/product_display/9725-lightech-titanium-hex-flange-screw-m8x100-125/)
How are you going to deal with the internal thread?
Quote from: ducpainter on May 04, 2014, 04:03:33 PM
How are you going to deal with the internal thread?
316?
I'd ask Kevin to do it.
Get the Ti ones. $25 each. [evil] No, don't. A mate of mine went nuts and spent over $500 on gold coloured Ti bolts for his bike.
Cap end might look better though on the end of the swingarm I reckon. If you go stainless, you can buy two of each and see how it looks.
Quote from: Speeddog on May 04, 2014, 04:26:22 PM
316?
I'd ask Kevin to do it.
So would I...
but that would increase the price from $2.40 ea. ;)
Quote from: ducpainter on May 04, 2014, 04:03:33 PM
How are you going to deal with the internal thread?
It's not an integral feature, just a safety back up right? Why not drill the head and safety wire it? Just a good and looks cooler too.
Quote from: ducpainter on May 04, 2014, 04:03:33 PM
How are you going to deal with the internal thread?
What do you mean? It's standard course thread yes?
Quote from: memper on May 04, 2014, 05:00:57 PM
It's not an integral feature, just a safety back up right? Why not drill the head and safety wire it? Just a good and looks cooler too.
You could do that. Safety wire is a PITA IMO.
Quote from: Buck Naked on May 04, 2014, 05:02:27 PM
What do you mean? It's standard course thread yes?
I was referring to drilling the center of the 8mm bolt to add the retaining bolt and washer like the factory does.
Well the MW bolts don't accommodate for that either. I was thinking maybe just a little blue locktite would be sufficient, or a dab of silicone which is all those lock bolts really are anyway. That's another reason I like those Ti bolts, because of the serrated flange.
Quote from: koko64 on May 04, 2014, 04:38:10 PM
Get the Ti ones. $25 each. [evil] No, don't. A mate of mine went nuts and spent over $500 on gold coloured Ti bolts for his bike.
Cap end might look better though on the end of the swingarm I reckon. If you go stainless, you can buy two of each and see how it looks.
[laugh]
It's an internal struggle. [laugh]
Quote from: memper on May 04, 2014, 05:00:57 PM
It's not an integral feature, just a safety back up right? Why not drill the head and safety wire it? Just a good and looks cooler too.
I did it to the heads of the OEM adjuster bolts on my bike, once I figured out how I was going to be able to secure the bolts with the safety wire after I tightened the bolts. Even though the OEM bolts are considerably softer than either SS and the MW bolts, I used several carbide drill bits, a goodly amount of cutting fluid, along with a drill press to do the job (together with a few choice words).
With a stainless steel cap screw, it's a lot easier to suggest drilling the head than trying to do it; it'd be even harder to drill the heads of the Corse Dynamics 10.9 grade chain adjuster bolts from Motowheels. If I had the MW bolts, I'd elect to pay someone to drill them for me.
The "Corse Dynamics" bolts are about 85 cents each from any hardware supply house in case anyone wants them.
Quote from: ducpainter on May 04, 2014, 05:08:31 PM
You could do that. Safety wire is a PITA IMO.
I was referring to drilling the center of the 8mm bolt to add the retaining bolt and washer like the factory does.
That to me sounds like even more of a PITA. hardest part, as mentioned before is drilling the hole for the wire.
Quote from: memper on May 05, 2014, 02:51:40 PM
That to me sounds like even more of a PITA. hardest part, as mentioned before is drilling the hole for the wire.
You only do it once though.
I've never had a chain adjuster bolt loosen, and they won't if you do it right.
Mmm. Good point.
I'd be happy to have ML tap the bolts if I get the Ti ones. May as well see if he can make them to begin with before I shell out 50 bux for em