I'm hoping somebody knows what's what with small granny gears.
My tourer is fitted with a 74mm BCD, 26 tooth ring on the front. The cranks are made by Sugino and the rings are aluminium. I'd like to change the granny gear to a smaller, ideally, steel 24t ring, for lower gearing and better durability.
I don't know whether all 74mm rings are interchangeable/compatible. The bolt holes on Sugino rings are slightly recessed or countersunk, ie. the top of the bolt sits almost flush with the surface of the ring when fitted. I wonder if all chainrings are the same and if other brands will fit properly?
Chainrings
- Tim
- Posts: 2944
- Joined: Wed Jul 07, 2010 5:02 pm
- Location: Gippsland Lakes
- RonK
- Posts: 11508
- Joined: Mon Aug 24, 2009 2:08 pm
- Location: If you need to know, ask me
- Contact:
Re: Chainrings
Postby RonK » Tue Sep 11, 2012 8:32 am
Difficult to source. You need one of these - the 24T is steel.
I have a Stronglight chainset on my VN Pioneer - it uses the large and small chainring positions for chainguards. The forging mark on the back is XD2, which tells me it was actually manufactured by Sugino. The chainrings are recessed for the bolt heads as you mentioned.
I got the chainset from Dotbike and they were good to deal with. After you order they'll contact you with the shipping price. Ideally for a low cost item like this you should try to combine with other items if possible.
I have a Stronglight chainset on my VN Pioneer - it uses the large and small chainring positions for chainguards. The forging mark on the back is XD2, which tells me it was actually manufactured by Sugino. The chainrings are recessed for the bolt heads as you mentioned.
I got the chainset from Dotbike and they were good to deal with. After you order they'll contact you with the shipping price. Ideally for a low cost item like this you should try to combine with other items if possible.
Last edited by RonK on Tue Sep 11, 2012 8:39 am, edited 1 time in total.
Cycle touring blog and tour journals: whispering wheels...
- silentbutdeadly
- Posts: 2294
- Joined: Fri Apr 09, 2010 9:52 am
- Location: Somewhere flat...
Re: Chainrings
Postby silentbutdeadly » Tue Sep 11, 2012 8:36 am
74 BCD rings should be interchangeable provided that they have the same no. of holes...
Stronglight are the only steel ones I've heard of... http://www.stronglight.com/stronglight/ ... yProd=74mm" onclick="window.open(this.href);return false;
As for the bolts...not sure. But modern chainring bolts are very low profile so you shouldn't have a big problem if the Sugino bolts don't make great contact.
EDIT: Bloody hell...Ron...you got in there before me! However http://www.spacycles.co.uk/products.php ... b2s149p244" onclick="window.open(this.href);return false; have them for 7 quid but you'd have to email them for shipping charges.
Stronglight are the only steel ones I've heard of... http://www.stronglight.com/stronglight/ ... yProd=74mm" onclick="window.open(this.href);return false;
As for the bolts...not sure. But modern chainring bolts are very low profile so you shouldn't have a big problem if the Sugino bolts don't make great contact.
EDIT: Bloody hell...Ron...you got in there before me! However http://www.spacycles.co.uk/products.php ... b2s149p244" onclick="window.open(this.href);return false; have them for 7 quid but you'd have to email them for shipping charges.
Ours is not to reason why...merely to point and giggle
- RonK
- Posts: 11508
- Joined: Mon Aug 24, 2009 2:08 pm
- Location: If you need to know, ask me
- Contact:
Re: Chainrings
Postby RonK » Tue Sep 11, 2012 8:41 am
hehe, sorry about that, but I've done a lot of research into this very subject.silentbutdeadly wrote:EDIT: Bloody hell...Ron...you got in there before me! However http://www.spacycles.co.uk/products.php ... b2s149p244" onclick="window.open(this.href);return false; have them for 7 quid but you'd have to email them for shipping charges.
Oh, and Spa Cycles - sure have a lot of stuff but don't try dealing with them unless you are some kind of masochist...
Cycle touring blog and tour journals: whispering wheels...
-
- Posts: 159
- Joined: Sat Dec 26, 2009 7:33 pm
- Location: Parkinson, Queensland
Re: Chainrings
Postby schurms » Tue Sep 11, 2012 10:29 am
I run TA Specialities. Zelito is their PCD 74 model - comes in black or silver. Not steel but you can not fault the quality. I have had no problems ordering from these guys in the past.
http://www.starbike.com/p/Specialites-T ... mm-2997-en
http://www.starbike.com/p/Specialites-T ... mm-2997-en
- MattyK
- Posts: 3252
- Joined: Fri Oct 01, 2010 1:07 pm
- Location: Melbourne
Re: Chainrings
Postby MattyK » Tue Sep 11, 2012 12:26 pm
A couple of 24T choices here: http://www.sjscycles.co.uk/74mm-pcd-5-arm-dept495_pg1/" onclick="window.open(this.href);return false;
TA (alloy): http://www.sjscycles.co.uk/ta-74mm-pcd- ... r-prod208/" onclick="window.open(this.href);return false;
Stronglight (steel): http://www.sjscycles.co.uk/stronglight- ... -prod3536/" onclick="window.open(this.href);return false;
Or get a custom job (alloy but super tough)
http://cycleunderground.com.au/chainringdesigns.htm" onclick="window.open(this.href);return false;
<edit> More alloy:
Middleburn ATB range http://www.middleburn.co.uk/chainrings_atb.php" onclick="window.open(this.href);return false;
at c r c:
http://www.this link is broken/Mode ... delID=3322" onclick="window.open(this.href);return false;
http://www.this link is broken/Mode ... delID=3321" onclick="window.open(this.href);return false;
TA (alloy): http://www.sjscycles.co.uk/ta-74mm-pcd- ... r-prod208/" onclick="window.open(this.href);return false;
Stronglight (steel): http://www.sjscycles.co.uk/stronglight- ... -prod3536/" onclick="window.open(this.href);return false;
Or get a custom job (alloy but super tough)
http://cycleunderground.com.au/chainringdesigns.htm" onclick="window.open(this.href);return false;
<edit> More alloy:
Middleburn ATB range http://www.middleburn.co.uk/chainrings_atb.php" onclick="window.open(this.href);return false;
at c r c:
http://www.this link is broken/Mode ... delID=3322" onclick="window.open(this.href);return false;
http://www.this link is broken/Mode ... delID=3321" onclick="window.open(this.href);return false;
- Tim
- Posts: 2944
- Joined: Wed Jul 07, 2010 5:02 pm
- Location: Gippsland Lakes
Re: Chainrings
Postby Tim » Tue Sep 11, 2012 4:37 pm
Thanks heaps fellas.
Think I'll take a punt and order the steel Stronglight. I'd be quite surprised if it doesn't fit.
Think I'll take a punt and order the steel Stronglight. I'd be quite surprised if it doesn't fit.
Jump to
- General Australian Cycling Topics
- Info / announcements
- Buying a bike / parts
- General Cycling Discussion
- The Bike Shed
- Cycling Health
- Cycling Safety and Advocacy
- Women's Cycling
- Bike & Gear Reviews
- Cycling Trade
- Stolen Bikes
- Bicycle FAQs
- Serious Biking
- Audax / Randonneuring
- Retro biking
- Commuting
- MTB
- Recumbents
- Fixed Gear/ Single Speed
- Track
- Electric Bicycles
- Cyclocross and Gravel Grinding
- Dragsters / Lowriders / Cruisers
- Children's Bikes
- Cargo Bikes and Utility Cycling
- Road Racing
- Road Biking
- Training
- Time Trial
- Triathlon
- International and National Tours and Events
- Cycle Touring
- Touring Australia
- Touring Overseas
- Touring Bikes and Equipment
- Australia
- Western Australia
- New South Wales
- Queensland
- South Australia
- Victoria
- ACT
- Tasmania
- Northern Territory
- Country & Regional
- The Market Place
- Member to Member Bike and Gear Sales
- Want to Buy, Group Buy, Swap
- My Bikes or Gear Elsewhere
- Cycling Brands
- Cannondale
- Garmin
- Giant
- Shimano
- Trek
Who is online
Users browsing this forum: No registered users
- All times are UTC+11:00
- Top
- Delete cookies
About the Australian Cycling Forums
The Australian Cycling Forums is a welcoming community where you can ask questions and talk about the type of bikes and cycling topics you like.
Bicycles Network Australia
Forum Information
Connect with BNA
Brought to you by Bicycles Network Australia | © 1999 - 2024 | Powered by phpBB ®
This website uses affiliate links to retail platforms including ebay, amazon, proviz and ribble.
This website uses affiliate links to retail platforms including ebay, amazon, proviz and ribble.