Aria Drag Brake install?
05-23-22, 01:20 PM
#1
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Thread Starter
Aria Drag Brake install?
Hi, I just scored a brand new Arai Drag Brake and have a question. My tandem uses DT Hugi 95 rear hub. The NDS axel end pulls off. Do I enlarge the backing plate hole so I can fit this through? Just not sure what to do. Thanks.
05-23-22, 03:18 PM
#2
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Thread Starter
The solution is to machine out the hole in the backing plate to 16mm and then slip the axel extender through to reconnect with the axel.
05-23-22, 07:49 PM
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And "machine" is a nice way of saying "drill". Andy
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AndrewRStewart
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05-24-22, 08:10 AM
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Andrew, I was also thinking of having threads cut on the axel extender to be able to use a locknut against the backing plate once I have the wheel mounted back into the frame. Does that make sense or should I use “spacers” instead and rely on the quick release to put pressure on the back plate?
05-24-22, 08:54 AM
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I'm no DT hub expert (and haven't worked in a tandem shop for 12 years) so my reply might not hold water.
It seems that the brake's backing plate (the part that holds the shoes and has the reaction arm extending from it) needs to be held in place WRT the axle and the drum part. All the tandem hubs (Shimano, Phil, Suzue, Hadley and others) I have worked (or used on my tandems) on have some sort of threaded manor to do this. I wonder if the Hugi hub has an optional end cap which better holds that backing plate in place. It's hard to see in the photos whether the axle stub (that the end cap fits on) can contact the backing plate's inner surface, and if so do so in the right distance WRT the drum. Weer that to be the case then an end cap with a shorter length (shorter by the backing plate's thickness) could be held in place by just the QR skewer's clamping. A bit awkward during wheel removal/installing but shouldn't be an issue when riding. Andy
It seems that the brake's backing plate (the part that holds the shoes and has the reaction arm extending from it) needs to be held in place WRT the axle and the drum part. All the tandem hubs (Shimano, Phil, Suzue, Hadley and others) I have worked (or used on my tandems) on have some sort of threaded manor to do this. I wonder if the Hugi hub has an optional end cap which better holds that backing plate in place. It's hard to see in the photos whether the axle stub (that the end cap fits on) can contact the backing plate's inner surface, and if so do so in the right distance WRT the drum. Weer that to be the case then an end cap with a shorter length (shorter by the backing plate's thickness) could be held in place by just the QR skewer's clamping. A bit awkward during wheel removal/installing but shouldn't be an issue when riding. Andy
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AndrewRStewart
AndrewRStewart
05-24-22, 09:42 AM
#6
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Thread Starter
Just to reiterate I was planning to…
1) Drillout backing plate hole to16mm
2) Reinsert Axel end extender through hole to connect with axel
3) Cut threads on Axel extender for lock nuts to contact backing plate (once the wheel is mounted on the bike) and lock into position and then hook up the cable and reaction arm.
1) Drillout backing plate hole to16mm
2) Reinsert Axel end extender through hole to connect with axel
3) Cut threads on Axel extender for lock nuts to contact backing plate (once the wheel is mounted on the bike) and lock into position and then hook up the cable and reaction arm.
05-24-22, 02:46 PM
#7
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Thread Starter
I'm no DT hub expert (and haven't worked in a tandem shop for 12 years) so my reply might not hold water.
It seems that the brake's backing plate (the part that holds the shoes and has the reaction arm extending from it) needs to be held in place WRT the axle and the drum part. All the tandem hubs (Shimano, Phil, Suzue, Hadley and others) I have worked (or used on my tandems) on have some sort of threaded manor to do this. I wonder if the Hugi hub has an optional end cap which better holds that backing plate in place. It's hard to see in the photos whether the axle stub (that the end cap fits on) can contact the backing plate's inner surface, and if so do so in the right distance WRT the drum. Weer that to be the case then an end cap with a shorter length (shorter by the backing plate's thickness) could be held in place by just the QR skewer's clamping. A bit awkward during wheel removal/installing but shouldn't be an issue when riding. Andy
It seems that the brake's backing plate (the part that holds the shoes and has the reaction arm extending from it) needs to be held in place WRT the axle and the drum part. All the tandem hubs (Shimano, Phil, Suzue, Hadley and others) I have worked (or used on my tandems) on have some sort of threaded manor to do this. I wonder if the Hugi hub has an optional end cap which better holds that backing plate in place. It's hard to see in the photos whether the axle stub (that the end cap fits on) can contact the backing plate's inner surface, and if so do so in the right distance WRT the drum. Weer that to be the case then an end cap with a shorter length (shorter by the backing plate's thickness) could be held in place by just the QR skewer's clamping. A bit awkward during wheel removal/installing but shouldn't be an issue when riding. Andy
You are correct that is the axel stub in the hole and doesn’t come close to reaching brake plate.
05-24-22, 03:42 PM
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05-27-22, 02:52 PM
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Andrew, I was also thinking of having threads cut on the axel extender to be able to use a locknut against the backing plate once I have the wheel mounted back into the frame. Does that make sense or should I use “spacers” instead and rely on the quick release to put pressure on the back plate?
The remaining methods on how this is commonly done are outlined in the cross post of this thread.
