Vertical dropout adapters
- Jangari
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Vertical dropout adapters
Postby Jangari » Sat Sep 21, 2013 4:11 pm
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Re: Vertical dropout adapters
Postby Mulger bill » Sat Sep 21, 2013 5:06 pm
You'd have to do without a rear brake too methinks.
London Boy 29/12/2011
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Re: Vertical dropout adapters
Postby mikesbytes » Sat Sep 21, 2013 5:17 pm
Another option is to use a concentric bottom bracket
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Re: Vertical dropout adapters
Postby HLC » Mon Sep 23, 2013 12:21 pm
or an eno gub, or a half link in your chain, or another gear ratio.mikesbytes wrote:Personally I'd be reluctant to add another point of failure
Another option is to use a concentric bottom bracket
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Re: Vertical dropout adapters
Postby HappyHumber » Mon Sep 23, 2013 12:25 pm
Hit me up via the BNA dm; I'll get an alert. If y'know, you know.
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Re: Vertical dropout adapters
Postby jaseyjase » Mon Sep 23, 2013 1:13 pm
If SS just a run a chain tensioner if you cant find a magic ratio.
if fixed then you'll have to go eccentric bb or eno hub as HLC stated
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Re: Vertical dropout adapters
Postby twizzle » Mon Sep 23, 2013 1:33 pm
I think you meant eccentric.mikesbytes wrote:Personally I'd be reluctant to add another point of failure
Another option is to use a concentric bottom bracket
And... those adapters look awful, and the idea that it's O.K. to jack the back of the bike up is pretty lame.
...real cyclists don't have squeaky chains...
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Re: Vertical dropout adapters
Postby HappyHumber » Mon Sep 23, 2013 2:07 pm
Even if they were welded steel on steel in that sort of position I'd still question the integrity.
Over tightening the bolt & nut would likely also compromise an aluminium drop-out.
... all are likely as to why we this is something most of us haven't seen before. Can't believe the ebay seller has sold over 10 of them already.
Hit me up via the BNA dm; I'll get an alert. If y'know, you know.
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Re: Vertical dropout adapters
Postby Jangari » Mon Sep 23, 2013 7:39 pm
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Re: Vertical dropout adapters
Postby Mulger bill » Tue Sep 24, 2013 12:01 am
London Boy 29/12/2011
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Re: Vertical dropout adapters
Postby HLC » Tue Sep 24, 2013 7:50 am
It would be cheaper to buy another frame.Mulger bill wrote:I dunno what sort of frame you're talking about here but it might be worthwhile giving Jon at Gripsport a call.
Or a $200 cell fixie.
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Re: Vertical dropout adapters
Postby Jangari » Tue Sep 24, 2013 8:38 am
Yeah, not worth it. Just converting a recent alu road frame to a single, and considering possibilities to run fixed. Not looking to spend money on eccentric hubs, eccentris BBs or frame alterations. I'll just keep it simple, run a half-link chain and try to luck out on length, or use a tensioner and go single.HLC wrote:It would be cheaper to buy another frame.Mulger bill wrote:I dunno what sort of frame you're talking about here but it might be worthwhile giving Jon at Gripsport a call.
Or a $200 cell fixie.
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Re: Vertical dropout adapters
Postby mikesbytes » Tue Sep 24, 2013 3:45 pm
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Re: Vertical dropout adapters
Postby cray- » Wed Oct 09, 2013 4:05 pm
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Re: Vertical dropout adapters
Postby mikesbytes » Wed Oct 09, 2013 9:13 pm
Sheldon Brown may help answer this http://sheldonbrown.com/frame-spacing.htmlcray- wrote:I realise you've all thoroughly warned off the OP from these things, but I'm curious: what kind of axle/hub arrangement would you need in order to clear the nut and all of that exposed thread on the inside face? Would a standard track hub have enough axle on each side to clear that debacle?
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Re: Vertical dropout adapters
Postby HLC » Thu Oct 10, 2013 9:36 pm
If someone is stupid enough to try these, i'm not sure they would be worried about having enough threads exposed to secure their rear wheel to these things safely.cray- wrote:I realise you've all thoroughly warned off the OP from these things, but I'm curious: what kind of axle/hub arrangement would you need in order to clear the nut and all of that exposed thread on the inside face? Would a standard track hub have enough axle on each side to clear that debacle?
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Re: Vertical dropout adapters
Postby slidetaker » Fri Oct 11, 2013 1:10 pm
We all know that we need at least 2 fixed points to resist any turning moment. The majority of mounting point along the horizontal will create turning moment from the offset between the adapter bolt and the upward shear force from the axle. This will cause the adapter to rotate with the adapter bolt as the centre of rotation.
It is only when the axle is mounted directly (pretty much exactly) under the adapter bolt that it may not have any rotational force.
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Re: Vertical dropout adapters
Postby WestcoastPete » Fri Oct 11, 2013 3:32 pm
I'm pretty sure they have some kind of slot that fits into the dropout to prevent this, like the anti-rotation washers on an IGH, but as part of the adapter. I reckon they could work Ok, but I personally wouldn't bother.slidetaker wrote:I actually doubt whether these adapters actually work.
We all know that we need at least 2 fixed points to resist any turning moment. The majority of mounting point along the horizontal will create turning moment from the offset between the adapter bolt and the upward shear force from the axle. This will cause the adapter to rotate with the adapter bolt as the centre of rotation.
It is only when the axle is mounted directly (pretty much exactly) under the adapter bolt that it may not have any rotational force.
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Re: Vertical dropout adapters
Postby cray- » Fri Oct 11, 2013 4:46 pm
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Re: Vertical dropout adapters
Postby Saturnstarzz » Thu Oct 17, 2013 1:32 pm
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