Raleigh Twenty "hop-up" (AASHTA)

A minor update, no pictures but the Twenty is working well! I'm working away this week at a festival, so I took it with me to chuck in the boot of the car. I haven't used it as much as I was hoping, but have been for a couple of rides. It feels very stable, I'm really impressed with how stiff and sturdy the frame is, and I do think it weighs less than a Moulton - although probably a bit more than a "proper" folder like a Brompton or a Dahon. I'm still fiddling with the saddle/bar position, and hoping to get a longer ride in this weekend to get a proper feel for how it is over a longer distance (longest so far has only been 4 miles).

I have noticed that it's quite skittish on loose surfaces. I guess this might be due to the low mass of the front wheel.
 
djoptix":31n1xvg0 said:
I have noticed that it's quite skittish on loose surfaces. I guess this might be due to the low mass of the front wheel.

That's what the nylon part of the headset was there to damp out. A bit less rake on the forks would probably give it more stability
 
I've read a lot of the Raleigh Twenty threads on here, but this is the first time I've read through yours. Some good helpful stuff in there and it's looking good.

I'm a bit concerned you're finding it possibly a touch to small, as I'm slightly taller than you, but I pretty much have all my components now, so I'll build it up whatever and see how I get on with it!

Interesting stuff about the forks too, it's edging me towards keeping the originals, though possibly seeing whether I can reduce the rake.
 
some of the Raleigh RSWs had a Delta style rear brake. Tho it was riveted together bits of pressed steel.
 
This is a new project which I've just taken on, inspired by a riding buddy who's just bought a Moulton. Going out on a ride with him coincided with this coming up for sale on the CTC forum. The seller and I had both been inspired by Sheldon's page on the Twenty - http://sheldonbrown.com/raleigh-twenty.html. The seller had got some way down the road with it, but then needed to clear some space. Here it is as I bought it -

1642286132e89b42d0ebfbc0f0390592b0f7d9be2a3746c11298ba9d5cf16e4e02be19a2.jpg


Some of the important work had already been done to modernise it - i.e. get around Raleigh's proprietary threading from back then.

* The steerer has (I think) had a 24tpi die run down it, so I can make a frankenheadset with the top half of a standard 1" one. The original bars are clamped with a collar which clamps over the threads, with slots cut in the back to allow the tube to pinch. I'll be replacing the stem with a modern 1" one, so I will probably cut the tube down and add a top nut.
* A square taper BB has been fitted - with plastic cups at 24tpi run into the 26tpi shell. I'm not 100% sure about this but it seems rock solid at the moment. Time will tell.
* The seller had a new rear wheel handbuilt for it, with a 7 speed Hyperglide hub. I'm not sure whether I'll use this or not, because it's still a bit wide for the rear triangle. If I can find a suitable 5 speed screw-on freewheel, I might use the other rear wheel which came with it, which is for a screw-on block. That's a bit wide too but I think it would be easier to narrow the OLD on that one - plus it's bolt-through, and I'm not keen on a QR on the rear wheel. The 7 speed one is actually 6 really, because the smallest cog is far too close to the seat stay to actually use it.
* As you can see, it came with alloy wheels and Marathon Slick tyres - big upgrade from the steel wheels that were standard.

Here it is as it stands at the moment - I'm waiting for some more parts to arrive, hopefully today.

IMGP5713_zps4d4b42be.jpg


Work done so far:

* Ditched the supplied rear mech and fitted a long cage Acera one with a claw for the mount (both courtesy of the parts bin). This is another reason for wanting a bolt-through rear wheel, as I don't plan on taking the wheel out for transport.
* Removed the old mudguards - if it turns out to fit me OK, I will have to add some modern ones.
* Replaced the Stronglight singlespeed c/set with my Biopace double. Plan is (yes, really), just to use it without a mech, and manually shift the chain for big hills! We'll see how that goes...
* Ordered and fitted a looooong stem, I think I've managed to find the only one which is actually heavier than the original! But it has loads of insertion, and is adjustable so I can sort out the position.

The plan:

* New alloy post, with my Selle An-Atomica saddle
* New pads in the loooooooong drop brakes, and see how/if these work. Long term, if it's a keeper, I'll braze on some canti mounts.
* Cable up and test ride!

If it fits after all that:

* Mudguards
* 400mm drops (if I think these will work given the frame size and the fact that I am tall)
* Perhaps a front mech
* Probably change the fork to one of these: Click - more suitable trail, and proper mudguard mounts.

Watch this space... here's Sheldon's version, for some inspiration :)

raleigh-twenty-8-01.jpg
what modern forks fit the twenty? ive looked everywhere on fleabay for a canti fork, cant find one, with a long enough steerer, 200cm i make it to be?
 
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