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Old 10-21-12, 12:13 PM   #1
Foldable Two
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From the Portland Handbuilt Bike Show - New BF SILK

The tikit, with it's new stem part, and the newly announced 'SILK' are in the Bike Friday booth at this weekend's Portland Handbuilt Bicycle Show. The SILK features the Air Friday "no seat stays" rear end. This enables any type of drive set-up, but especially a Carbon Belt.

http://www.bikefriday.com/momentum/sneak_peek_silk

Had a chance to ride it briefly in the roadway/parking lot (we were in an active shipyard on Swan Island). This is supposedly a 62cm frame (seemed more like a 60cm), but seat was too low, as were handle bars for me. It was equipped with an 11-sp Alfine Hub (smooth w/nice shifting). Didn't really see any performance differences from my two Fridays. Different looking for sure.

This is a 'proto-type' SILK, so don't freak-out over the welds.

Also, included a pic of the new tikit stem part installed.Have to admit, not totally sure of what I am looking at here, since I do not have a tikit.

Lou
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Last edited by Foldable Two; 10-21-12 at 12:16 PM.
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Old 10-21-12, 02:34 PM   #2
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good luck from Blighty, BF. Like the look of the silk. If it really pulls together, could it really be the impossible - a Brompton killer (as a fan of both brands, I might add).
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Old 10-21-12, 03:19 PM   #3
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ADD: What I should have pointed out is that the chain-stay-only design has the pivot ahead of the Bottom Bracket, keeping the distance between the Bottom Bracket and the hub constant - even when it is folded. This, plus its "open design" (vs. a traditional rear triangle) makes use of a carbon belt possible.

Lou
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Old 10-21-12, 03:24 PM   #4
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I received an email about this but it doesnt have the 3 speed model for sale.
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Old 10-21-12, 04:02 PM   #5
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Dynocoaster since BFs are customs if you want a 3 speed they will make a 3 speed for you. You need to go through the call them order process to see if you want to pay what BF is asking. Not everything they can or will build is ever on the web site or in e-mails. Roger
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Old 10-21-12, 04:08 PM   #6
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The Op has a link to Bike Friday that shows the Silk 3.0 model, I received an email with special pricing and there are only 3 models available, the alfine 8, DaVinci and alfine 11.
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Old 10-21-12, 04:44 PM   #7
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ugh.. its beautiful and priced to sell (for the base model, if you are already a bf owner):

Silk 3.0:
A Delta C-Drive Belt System with Shimano 3-speed internal hub, Origin 8 disc brakes, and 406 or 451 wheels. Suggested retail price: $1,500.
BIKE FRIDAY OWNER INTRO PRICE: $1,299

this would be an awesssssoooommmee commuter with a 406
wheel set ...
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Old 10-21-12, 05:01 PM   #8
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Something about the rear dropouts make me queasy.. but I love the purple, the belt-drive, th e451 option and everything else!
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Old 10-21-12, 05:13 PM   #9
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Something about the rear dropouts make me queasy.. but I love the purple, the belt-drive, th e451 option and everything else!
"
The Silk is made possible by a special RAD technology (ratcheting adjustable dropout)(patent applied), which allows for incremental chain stay length without the possibility of slipping out of adjustment. It is completely modular so it can adapt to any type of drive chain."

how can it go wrong? it's RAD!
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Old 10-21-12, 07:30 PM   #10
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The modular dropouts on the Silk are not quite the same as the dropouts on my single speed Tikit, but the incredible versatility of the Tikit dropouts were a major reason I purchased mine.

It seems virtually any hub made, from 110mm to 135, can be accommodated with one of the several available different bolt-on dropouts and appropriate spacers. Internal gears, single speeds, and fixed gears can all be tensioned using the limit screws. Dropouts with derailers tabs could also be bolted on.

Roger
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Old 10-22-12, 06:14 AM   #11
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Wonder if BF has life-cycle shock and vibration tested this new design, or if they're just going to let their customers explore if it's safe and durable, the way they did with the tikit?
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Old 10-22-12, 06:53 AM   #12
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^^^
Is that necessary?
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Old 10-23-12, 08:48 AM   #13
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Although I have no interest in a carbon belt bike I'm glad to see Bike Friday is continuing to innovate...
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Old 10-23-12, 12:26 PM   #14
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Lou's top shot of the Tikit stem is inconclusive because the fix was subtile..

would have needed to take it apart, pull the fork off, to see the difference..


by not needing a seatstay, the Belt installation gets more straightforward..
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Old 10-23-12, 01:19 PM   #15
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Hmmm it ringed a bell, and finally found it: http://www.velovision.com/showStory.php?storynum=329

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Old 10-23-12, 01:51 PM   #16
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Originally Posted by Vampy View Post
Hmmm it ringed a bell, and finally found it: http://www.velovision.com/showStory.php?storynum=329

wow.. wonder what ever happened to.. "This technology [that] will make non-suspended city and trekking bikes obsolete."
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Old 10-23-12, 04:33 PM   #17
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Hmmm it ringed a bell, and finally found it: http://www.velovision.com/showStory.php?storynum=329
Looks like Velovision didn't get the paragraph software until 2003.
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Old 10-23-12, 05:23 PM   #18
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hehe...
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Old 10-25-12, 03:25 AM   #19
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wow.. wonder what ever happened to.. "This technology [that] will make non-suspended city and trekking bikes obsolete."
Dunno what you mean, everybody uses them now mwaaahahaha
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Old 10-25-12, 01:53 PM   #20
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Hmmm... David Hon gushed, "Ten years from now, we may look back and mark 2002 as the beginning of the end for non-suspended bikes."

I wonder what happened? It's now 10 years on and VAX is nowhere to be found.
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Old 10-25-12, 03:42 PM   #21
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I wonder what happened? It's now 10 years on and VAX is nowhere to be found.
Possibly a victim of 'life cycle' testing?

Looks like 'break a blade, toss the frame" technology. (Hard to find leaf springs on a new car today.)

Lou
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Old 10-25-12, 03:54 PM   #22
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Can not tell from the photos of the new BF silk. But do you think you will be able to retrofit the new silk rear triangle to an older NWT or Air Friday?
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Old 10-25-12, 05:55 PM   #23
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Can not tell from the photos of the new BF silk. But do you think you will be able to retrofit the new silk rear triangle to an older NWT or Air Friday?
The SILK rear end CANNOT be fitted onto a current, or past, NWT - the pivot bolt on the SILK is in front of the bottom bracket and not behind it, as on the NWT. (The NWT could be manufactured with this feature in the future, if BF elected to do so.

The Air Friday "rear triangle" is basically where this design came from, however, the bracing behind the pivot point on the Air Friday is quite different from the SILK, because the Air Friday doesn't have a normal seat post.
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Old 10-27-12, 08:30 AM   #24
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love some close-ups and different pov's on the silk folded
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Old 10-27-12, 09:08 AM   #25
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Wonder if BF has life-cycle shock and vibration tested this new design, or if they're just going to let their customers explore if it's safe and durable, the way they did with the tikit?
Do you shock test all of your new models?
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