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 CLWB build - "FAD"
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Filip Arvidsson
Starting Member

Sweden
30 Posts

Posted - 04/21/2017 :  08:31:23  Show Profile  Reply with Quote
Here's my take on a more compact LWB.








CLWB "FAD" (Filip Arvidsson Design)
Weight 12.2 kg
Wheelbase 1581
Total length 2157
Seat angle 35- 40

The ride is very nice, by going mid shoe cleats I could ditch the power idler which saves me a few watts. Maneuverability is a lot better than my dual 700c and it's not such a pain to store.
I'm no painter but I had a bit of fun with it, the name is a play on a old DAF logo which had 3 tulips on it.
I built a super short canti brake to get a good brake which clears the crank.



Balor
recumbent guru

Russia
733 Posts

Posted - 04/21/2017 :  09:59:54  Show Profile  Reply with Quote
Looks great! What kind of tubing did you use?
But how much trail does it have? Based on the photo angles, I can swear it has nearly zero trail.
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Filip Arvidsson
Starting Member

Sweden
30 Posts

Posted - 04/21/2017 :  10:48:14  Show Profile  Reply with Quote
It has 6mm of trail. It seems that the longer the wheelbase the less trail matters.
Main frame tubing is 50'25'1.6, fork is made from 20'2, rear is an old fork something like 28'1.6.
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alevand
human power expert

USA
3514 Posts

Posted - 04/21/2017 :  16:18:01  Show Profile  Visit alevand's Homepage  Reply with Quote
How did you get such a short wheel base, 1581 mm (62 in) while being 6'5 (200 cm) inches Tall? How long are the crank arms?

C:
Tony Levand

Edited by - alevand on 04/21/2017 16:19:09
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Filip Arvidsson
Starting Member

Sweden
30 Posts

Posted - 04/21/2017 :  20:58:37  Show Profile  Reply with Quote
I'm just 6 foot, 183 cm, but the solution is to slam the bb as close to the headtube as possible. For a 200 cm person you'd either have to sit more upright or add a bit lenght to wheelbase or crank arms, these are 170 mm cranks.
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PUGZCAT
recumbent enthusiast

Canada
466 Posts

Posted - 04/29/2017 :  21:07:23  Show Profile  Reply with Quote
6mm of trail likely minimizes wheel flop with the slack head angle. A very clean design. Tony, do you think this bike would be a good basis for a coroliner?
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Tom Schneider
recumbent enthusiast

132 Posts

Posted - 04/30/2017 :  05:03:00  Show Profile  Reply with Quote
Any problems with the crank hitting the wheel on turns? Looks like the cranks are out far enough for no problem cruising or higher speeds. At sharper turns at low speeds?

Tom
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Filip Arvidsson
Starting Member

Sweden
30 Posts

Posted - 04/30/2017 :  12:28:26  Show Profile  Reply with Quote
It hasnt happened yet but in the sharpest turns I dont pedal.
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