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PostPosted: Fri Jul 13, 2018 6:07 pm 
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yappin' kitty
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Drops mic...

That there is a real killer machine! I would love to try that one. That freewheel in front is something Schwinn did in the late 70s early 80s. Never did understand the benefit.
Disc brakes are so bad ass on a twenty


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PostPosted: Fri Jul 13, 2018 8:01 pm 
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bad kitty!
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Here the freewheel in front makes sense, as it's giving extra ground clearance, while still allowing room for a 9 pawl, 108 position freewheel.
The way Schwinn did it, well, not so much. Wasn't it something along the lines, that it could shift gear while coasting?

The freewheels used for trials, are extremely strong, compared to those we see in MTB or road hubs. Most MTB freehubs are sporting 3 pawls, and yet they survive just fine, even being half the diameter of a trials freewheel.
A proper trials freewheel has 9 pawls (3 pairs of 3), and yet they blow up here and there.

Discs on 20" wheels is brutal. It's on-off, and that's it. No useful modulation. For trials it's great, for just about anything else I can think of, not really useful.

Magura :)

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PostPosted: Fri Jul 13, 2018 8:08 pm 
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yappin' kitty
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I like stopping. The old bikes are horrible at it. I had high hopes for that drum brake. Now I know why they call them drag brakes. Some slowing power but no stopping power at all.

That’s are very cool bike mr m


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PostPosted: Fri Jul 13, 2018 8:20 pm 
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bad kitty!
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Is it not just a matter of cleaning and readjusting the drum brakes?
I don't recall drum brakes being that poor.

Magura :)

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PostPosted: Fri Jul 13, 2018 11:12 pm 
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yappin' kitty
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They don’t have enough power to lock the wheel. Not even close. For something that was used on tandems and mopeds I’m not impressed. They have a slight edge on my old dual rim caliper setup but not much.


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PostPosted: Fri Jul 13, 2018 11:25 pm 
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bad kitty!
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Then something isn't right.
The only disadvantage they have, is largely that they overheat real fast.

Have you ever serviced it?

Magura :)

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PostPosted: Fri Jul 13, 2018 11:58 pm 
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yappin' kitty
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Yes I’ve read a little about them. They are fussy. Sounds like they need to be carefully sanded to make full contact all the way around the drum. High spots keep the shoe from full contact. Sand, ride , repeat


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PostPosted: Sat Jul 14, 2018 10:10 am 
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bad kitty!
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In my experience, it's usually the drum that needs to be machined back to round.
The pads will bed in, if the drum is ok.

Magura :)

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PostPosted: Sun Jul 15, 2018 2:02 am 
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yappin' kitty
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Magura wrote:
Fridaaaaay!

Some of you may have seen this one before.
It's simply a marvel of purpose specific bicycle engineering.

Normally I always would have this, that, and what not, just a bit different. Here it's all perfect. Nothing could be made to be better, or to suit me better. Everything is right at the limit, but still to the good side.

Today's Friday bike is an Echo 20" Ti, with all the billet and titanium goodies one can get (and some most people can't get), plus all the upgrades known to mankind for this bike, counting out the tires.
The tires are Echo 19" and 20", front and rear respectively, and in my humble opinion, they have an undeserved bad reputation, just because they're like 200g heavier, than the lightest rubber available. Weight isn't everything, as I can run these at lower pressure.

Speaking of weight.....sub 7kg :shock:

Note the carbon pad on the down tube, that's what keeps the frame alive. This is something I figured a few years ago, to help the national team quit breaking frames left and right.

I have another trials bike from Monty, that I use mostly, as it's built like a tank. With the Monty a phuckup is no big deal. It's scraped, dented, bruised, you name it, and sounds terrible when running, but it's running.
The Echo on the other hand, is more akin to a formula 1 racer. Super performance, brutally expensive to repair, strong as long as everything is done proper. If on the other hand something goes wrong and you crash it, the bills are piling up real quick.
It just got a new bash plate, as I ran out of skills last time I rode it. :lol:

Another nifty detail, is that the rear hub has no free hub. The chain runs all the time, and the free hub is in the crank sprocket instead. It takes a little getting used to that, and in particular that it's a no-go to have shoe laces that can reach the chain.

Yeah I know.....wall of text. tl:dr by all means, but I find this bike rather interesting.

Magura :mrgreen:


I must have cranks as sweet as these or I will die. Not kidding


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PostPosted: Sun Jul 15, 2018 12:30 pm 
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bad kitty!
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They are indeed the sweetest cranks out there.
They're also pretty much unobtainable today. They were made for the 2013 season by Echo, had a brutal price tag, in a sport where the financing is limited, so they were sold in small numbers.
Throw in that the first generation broke if you looked at them wrong, and you have the explanation, as to how come you never see them today.
Still one of the top competition trials cranks out there, tipping the scales at around 360g for a 160mm pair, and if you throw in the titanium axle, a total weight of 560g is what you get.
https://www.bikenbici.com/b2c/producto/ ... rial-124mm

The above offer I doubt is anything but an ad that has been forgotten.
The cranks pop up from time to time, the axles not so much. If you manage to get a pair of cranks, I can get you a titanium axle. I'm going to the U.S. in October anyway, so I can bring it along and ship it from your side of the pond.
I have a few....
They are Spanish BB standard, so you should be able to get them in your frames with an adapter.


Magura :)

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