Front Axle Holder Studs Questions


Information and questions on GL1200 Goldwings (1984-1987)
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BikerNewsman
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Front Axle Holder Studs Questions

Postby BikerNewsman » Mon May 19, 2014 2:36 pm



The bike these questions concern is a 1985 Honda GL1200 LTD.

First - What is the hardness/tensile strength rating of the front axle holder studs? The local bike shop (non-Honda) thinks they are 8.8 (metric rating) due to their location but said they may be 10.1

Second - Is there any safety reason why these studs can not / should not be replaced by appropriately rated bolts?

Due to a malfunctioning torque wrench (now replaced) I snapped off one of the studs when putting the front wheel back on my bike. I temporarily replaced it with a hardened bolt so I could move the bike out of harms way if necessary. (This happened just before a major storm system moved through and I live only about 75 yards from a river that was predicted to flood.... thankfully it didn't.) I liked the look of the bolt head over the stud/washer/lock washer combination currently on the bike so I'm considering changing all four (4) studs to bolts if this would not cause a hazardous riding condition, plus finding the correct length hardened bolts is much easier than finding the correct length hardened studs... at least around here. Either way I plan on purchasing a couple of spares in case of another problem like this.


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virgilmobile
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Re: Front Axle Holder Studs Questions

Postby virgilmobile » Mon May 19, 2014 2:54 pm

BikerNewsman wrote:Second - Is there any safety reason why these studs can not / should not be replaced by appropriately rated bolts?


Shear rating aside...The only problem I foresee is the high likelihood of the bolt seizing in the fork...Dis-similar metals and all that chemistry stuff...
I guess that's why there's a stud there in the first place.
It would be proper to replace the broken stud with another.
I guess you might want to get the wheel back off someday. :D

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Re: Front Axle Holder Studs Questions

Postby BikerNewsman » Mon May 19, 2014 10:33 pm

Well, yes, I figure I'll want to get that wheel off again some day. ;) Had not thought about the dis-similar metals problem. Thanks for your input. :)

Now I just need to know what grade those studs are. I'm leaning toward 8.8 since 10.1 is stronger in some applications yet also more brittle, but they have to be the right ones, not what I think they may be. None of the bike shops around here carry the same (oem) studs, and the ones that are close enough to work as a last resort have the solid portion placed different than the originals which means they'll either thread further up into the fork and possibly bottom out there, will not thread far enough into the fork, or will stick too far out of the axle holder. Fastenal says they can make up some to match what came on the bike but need to know the correct grade when I order them.
"It ain't about the miles, it's all about the smiles".
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virgilmobile
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Re: Front Axle Holder Studs Questions

Postby virgilmobile » Tue May 20, 2014 7:05 am

Ill do some looking today and see shat I can find.
Perhaps someone might have a old set of slides they might part with.??

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Re: Front Axle Holder Studs Questions

Postby BikerNewsman » Tue May 20, 2014 10:53 am

Thanks again. I appreciate any help I can get with this. I talked to 2 Honda dealers by phone this morning and both parts managers said the oem studs are no longer available from Honda. I also spoke with the shop managers to see if anyone knew from experience what the hardness rating is and both could only tell me the size. One went so far as to check the packaging of studs for another model bike but it only gave the size, not the hardness. :(
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Re: Front Axle Holder Studs Questions

Postby WingAdmin » Tue May 20, 2014 11:25 am

You might try calling around a few local machine shops, see if any of them have a hardness tester and would be willing to test the hardness of one of your studs (could possibly be done on the end, so as to make it non-destructive). That way you would know for sure.

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Re: Front Axle Holder Studs Questions

Postby BikerNewsman » Tue May 20, 2014 10:21 pm

Thank you. I'll check out that option. :)


"It ain't about the miles, it's all about the smiles".
My (non-commercial) motorcycle blog = http://dixieriders.wordpress.com/purpose/


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