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Recessed chainring bolt holes?  RSS Feed

#1 2017-12-04 7:12pm

Arawak420
Member
Registered: 2016-11-20
Posts: 30
Bikes: 4

Recessed chainring bolt holes?

I need a chainring that goes on the backside of spider. I was looking at the profile chainring but the recessed holes are on the front side of the ring.

Will it matter that i wont be able to lock the bolts in, or will i have slippage upon torque? Thanks.

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#2 2017-12-04 7:38pm

Otto_Maddox
Pro Member
From: ATL, GA
Registered: 2017-08-04
Posts: 36

Re: Recessed chainring bolt holes?

If the nut half of the single bolt/nut set won't protrude through the chainring and engage the spider, you might try a double chainring nut/bolt set.

The difference if you don't know is the nut half of the double chainring hardware is longer:

http://uploads.bmxmuseum.com/user-images/245546/crb_single5a26149bed.jpg


http://uploads.bmxmuseum.com/user-images/245546/crb_double5a2614a629.jpg




Of course, if the double chainring nuts are too long, they won't tighten the chainring securely.

Last edited by Otto_Maddox (2017-12-04 7:39pm)

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#3 2017-12-04 11:39pm

Crashman
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From: Mount Pleasant, MI
Registered: 2012-04-22
Posts: 4440
Bikes: 2

Re: Recessed chainring bolt holes?

Arawak420 wrote:

I need a chainring that goes on the backside of spider. I was looking at the profile chainring but the recessed holes are on the front side of the ring.

Will it matter that i wont be able to lock the bolts in, or will i have slippage upon torque? Thanks.

Normally you flip the ring to put it on the inside of the spider.


Wanted: Inexpensive lot of cheap 7/8" bars for grandkid's bikes. I will paint as needed.

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#4 2017-12-05 8:39am

rareair
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From: San Diego, Ca
Registered: 2015-08-28
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Re: Recessed chainring bolt holes?

Crashman wrote:

Arawak420 wrote:

I need a chainring that goes on the backside of spider. I was looking at the profile chainring but the recessed holes are on the front side of the ring.

Will it matter that i wont be able to lock the bolts in, or will i have slippage upon torque? Thanks.

Normally you flip the ring to put it on the inside of the spider.

I’m guessing the OP want to have the logo’s in view when mounted


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Wanted: FN SCAR16S

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#5 2017-12-05 2:01pm

Otto_Maddox
Pro Member
From: ATL, GA
Registered: 2017-08-04
Posts: 36

Re: Recessed chainring bolt holes?

rareair wrote:

I’m guessing the OP want to have the logo’s in view when mounted

That was my guess too. Profile chainrings usually have nicely machined features.

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#6 2017-12-05 5:04pm

Arawak420
Member
Registered: 2016-11-20
Posts: 30
Bikes: 4

Re: Recessed chainring bolt holes?

Not to worried bought logos. Just want a nice tight fit. Nothing worse in a group takibg off from light and hear a torque clunk from the bolts not secure

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