Tarck Arts and Carfts. Post your home-built bikey stuff.

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jamey
jamey's picture

That's some real enjoyable product testing.

truckdoug "never turn down free beer, dont stick your dick where you wouldnt put your face, and always ride shimano"

Tue, 12/02/2014 - 21:10
rauce
rauce's picture

Carpet fiber fender blade update.

My mold.

Since the fenders are to be 37mm wide and fit over 25c tires I used a shitty wheel with a 700x35 tire mounted and a thick 26" tube cut open and slipped over the outside for extra bulk. I then taped it up with white vinyl electrical tape.

2" wide 6oz 3k weave "tape" with finished edges. It was easy to use with the wet layup but draped really poorly since the fender is curved in two dimensions. Ideally I think strips of uni with varying fiber directions would be way better.

After lay up I used the same tape wrapped backwards with perforations to squeeze out excess resin.

Unwrapped it this morning and chopped off the rough bits at the ends. Still needs some more time to cure fully.

Fri, 12/12/2014 - 11:29
dorth
dorth's picture

awesome. thats something I've wanted to try for a while now.

*paging orc*

Fri, 12/12/2014 - 11:45
Orc
Orc's picture

Are you planning on painting a coat of resin over the top so you can sand the surface smooth, or are you planning on leaving the tape corrugations in situ? And now much resin did you end up using with 3 (?) layers of carpet?

Fri, 12/12/2014 - 11:47
rauce
rauce's picture

I mixed up 110ml and that was just enough to wet out all three layers with a heavy hand. Most of it got squeezed out.

I'm going to sand it smooth and trim the edges. The mold didn't really work very well. Something dedicated with an edge to line up with the edges of the strips would work way better. I had to line it up by eye and the strips kinda wandered back and forth.

Fri, 12/12/2014 - 12:00
Orc
Orc's picture

My plans are to use a plastic fender as an exterior mold; planet bike plastic fenders have a lip on the inside that I can use as a straightedge to fold the fabric against (and if the fabric overlaps there will be a distinct line that I can cut along.)

Fri, 12/12/2014 - 12:06
lukasz
lukasz's picture

Oh man I want to give this a shot. Looks like something I might consider fun. Is there a primer anywhere? Or like... what is your materials list?

Fri, 12/12/2014 - 13:51
Orc
Orc's picture

Carbon fiber fabric
thinset epoxy (not paste)
something for mold release (some water soluble plastic; heavy hold hairspray works)
a form that the epoxy won't stick to (you can build a form from plaster or wood and then cover it with mold wax, but don't skip the "cover it with mold wax" step unless you never want to get the finished product out of the form!)

spray mold release into the form
paint one side of a piece of carbon fiber fabric with a thin layer of epoxy
lay it dry-side-down into the mold
lay the second layer of fabric over the first
press it down
paint it with epoxy
lay the third layer of fabric over the second
press it down
squash everything tight so the epoxy impregnates everything. There are /many/ ways to do this; when I put the rack mounts of my CF fork I wrapped each layer of fabric very tightly, and then after putting down the final layer manually squashed everything together with my fingers. Taping it down like rause did works, obviously; so does (if the form is suitable) inflating a inner tube or similar balloon to squash things down, and so does wrapping it in a balloon and using a vacuum pump to suck all the air out and let gravity squash things into place, and also making a two-part form and clamping everything together after finishing the layup.

When I finished laying the carbon fiber on my rack mounts, I painted over with epoxy one last time, filed/sanded everything smooth, then sprayed it with polyurethane to make it all shiny again.

Note that since it's carbon fiber it will eat files; I used an old wood rasp to clean off sticking-up CF threads and wore two bald spots in that rasp while I was doing it.

Fri, 12/12/2014 - 14:07
lukasz
lukasz's picture

I think I'm gonna give it a shot. Fenders seem easy enough as a first project. Plastic fenders as form seem like a really good idea. What's a good CF/epoxy source?

Fri, 12/12/2014 - 14:14
rauce
rauce's picture

My research was youtube videos mostly directed at people wanting to make non-structural car parts. Wet layup is pretty simple, I basically just bought the fabric, the resin the dude at the composites place suggested and a mold release wax. There are some consumables you'll need, brushes, gloves and little plastic cups for measuring the parts of the resin out (the resin I purchased comes in two parts).

It's messy though and can be hard to get a nice finish unless you have a really good mold. Vacuum bagging and prepreg would make everything easier but equipment costs $ I'm not ready to spend on this yet.

I went to a place that sells composites and supplies mostly to boat builders and aerospace stuff.

Fri, 12/12/2014 - 14:15
NOVELTYNAME
NOVELTYNAME's picture

orc are you going to integrate some light wiring? i mean, if not that would be a good idea.

"Folks want options!"

Fri, 12/12/2014 - 14:40
lukasz
lukasz's picture

Is it possible to just mold a cable between the layers when laying it up or might it mess with the cable? That could be pretty sweet.

Fri, 12/12/2014 - 14:45
cheese
cheese's picture

It would be easy enough to mold some flexible tubing to serve as conduit, which would allow you to still replace the wire.

Fri, 12/12/2014 - 14:48
lukasz
lukasz's picture

Oh come on, live a little. Ain't nothing gonna happen to a wire assuming the epoxy/curing doesn't damage it.

Fri, 12/12/2014 - 14:53
Orc
Orc's picture

You should never need to replace the wiring, though; it's not as if it's going to flex or anything inside the CF; personally I've gone to mounting the light either at the rear rack mounts (for external wiring) or at the NDS dropout (for internal wiring) but if I was going to do it I'd fabricate a wiring harness with plugs or posts at both ends, then embed the wire within the layers of fabric. The sort of crash that would break that wire is also the sort of crash that would shatter the fender, so you could splice the wire while regluing the fender pieces back together.

Edit: Oh, and:

Goddamn, carbon fiber tubing is light. Now to decide whether to make a rack or use it for fender stays.

Fri, 12/12/2014 - 15:02
buffoon
buffoon's picture
(Reply to #266)

Moncler Puffy Vest wrote:
orc are you going to integrate some light wiring? i mean, that would be a super awesome terminally sick idea.

Lippy wrote:
a measured amount of muscle and hate when installing should keep that from happening.

Fri, 12/12/2014 - 15:08
lukasz
lukasz's picture

OOhhhh yeahhh carbon fender stays! Combined with Berthoud hardware that's some good stuff. How thick are they?

Fri, 12/12/2014 - 15:39
Orc
Orc's picture

3/16ths, aka ~5mm. If I use them for stays I'll probably bend 3/16ths steel tubing for the part that loops over the top of the fender, then peg everything together with piano wire, brass, and epoxy.

Fri, 12/12/2014 - 16:04
dorth
dorth's picture

orc, how are those hydro levers coming along?

Fri, 12/12/2014 - 16:32
Orc
Orc's picture

Approximately half done; my sweet fixie™ is my fendered porteur bike, so I haven't wanted to take it out of service for the 3-4 days it will take to do both of the levers at once. So I've almost finished the rear brake (no new lever yet, so it's a distressingly phallic brake lever right now) but the front brake is still untouched by human hands.

Fri, 12/12/2014 - 20:08
crowding
crowding's picture

Thinking about making a seat bag. Would strap to small rear rack at bottom, follow contours of seatstays/post, strap to to seat rails at top, roll top closure pointing back. What materials would be good? Cordura, x-pac, heat sealable stuff?

Thu, 12/18/2014 - 01:20
jeffro
jeffro's picture

Depends on what it will carry. Jackets or bedding you could ultralite and use tyvek. Rolltop pretty much the only good closure for that anyway, plus cheap.

Thu, 12/18/2014 - 09:13
Andrew_Squirrel
Andrew_Squirrel's picture

Last Sunday instead of enjoying the beautiful weather I decided I needed to stop procrastinating and finally learn to sew.
Supgirl gave me a crash course on her electric machine (she couldn't remember how to assemble and thread her newly gifted hand-crank machine).
First few seams were pretty horrible but then I started to get the hang of it. Not sure if my detail-obsessive focus was a blessing or a curse.
The first iteration of this tent pole top-tube bag isn't quite functional yet, I think I will end up making the roll much shorter & permanently attaching the non-hook side of the velcro directly on the bag and leave the hook side as the piece that loops around the top-tube (instead of having it wrap twice around the tube with both sides of the velcro sewn together as one long piece).

I realized I didn't get any good photos of the bag when I was finally done. Oops.

..and yes, I did buy fabric from Swift Industries to make sure everything matched. The velcro and thread were purchased from Seattle Fabrics and also match perfectly!
I realize I have a problem.

Fri, 12/19/2014 - 14:03
ShartAttack
ShartAttack's picture

Wish I could pay somebody to make one of those. I think it would really simplify my camping setup.

Former RAGBRAI enthusiast

Fri, 12/19/2014 - 14:09
Viggen
Viggen's picture

That's proper!

Also Shart, methinks the squirrel could possibly make you one for a small financial transaction?
I need supgrrl to make me one of these for my Godspeed so I can stop using the tent pole bag that came with my tent+toe straps around TT when touring. It's not very stylish off me..

Whippin Skidz wrote:
This is tarck, there is a complicated solution to everything and we will endlessly discuss until an agreed upon solution has been tabled. This is out of your hands now.

Fri, 12/19/2014 - 14:44
Andrew_Squirrel
Andrew_Squirrel's picture

My only worry about making these for others is that I think the Jandd frame bag is an essential component in keeping the pole bag stiff and stationary. I plan on putting another velcro piece around the headset area to prevent rotation but the Jandd bag is primarily what is keeping it put.

Fri, 12/19/2014 - 15:00
ShartAttack
ShartAttack's picture

I don't run a frame bag on my camping bike so all I'm thinking of is one that would hang from the top tube instead of sitting on top of it (I don't think I would have nut clearance if it was on the top anyway). I do have a Revelate Tangle but that will probably either stay on the hambiek or may end up on my road bike if I want it to do lite commuter duty.

Hanging it under the top tube would seem simpler but I would worry about it swaying back and forth unless you put a couple more straps on it. Not saying any of this is rocket surgery but I don't think it would be super simple either. Also need to check that my tent poles would fit inside my frame (though I'm pretty sure they would)

Former RAGBRAI enthusiast

Fri, 12/19/2014 - 15:17
buffoon
buffoon's picture

I can probably make one for you if you don't need it soon. I'll want to make one for myself first for testing tho.

Lippy wrote:
a measured amount of muscle and hate when installing should keep that from happening.

Fri, 12/19/2014 - 15:33
ShartAttack
ShartAttack's picture
(Reply to #279)

buffoon wrote:
I can probably make one for you if you don't need it soon. I'll want to make one for myself first for testing tho.

lol well camping in Iowa *might* start up in April, so if you really wanted to go at it I think you'd have plenty of time. I'd need to measure some stuff anyway.

Former RAGBRAI enthusiast

Fri, 12/19/2014 - 15:36
Andrew_Squirrel
Andrew_Squirrel's picture

I think Fred and Jimmy have suggested just getting the Jandd frame bag (fairly cheap) with the intention of just punching a hole in the tail of the bag closest to the Seat-tube. You can put your tent poles in the bag and have the excess stick out the back. You would need to fill up the bag with stuff to keep the poles along the top of the bag and straight.
The other option is pinning the poles between the top of the Jandd frame bag & the top-tube and using the velcro to keep it in place. There is enough slack in the Jandd mounting velcro to fit most 1-person tent poles.

I didn't use these methods because the Big Agnes poles I use are an all-in-one-piece pole system with these big, awkward triangle joints at either end. It makes the process of getting them into a tight, compact bundle extremely difficult (you can see in the photos above that I'm using two velcro wraps to keep the bundle from exploding into their resting state as a full tent).

Fri, 12/19/2014 - 15:41
jimmythefly
jimmythefly's picture

I've got a Jandd that I opened up the tail up so could put tent poles inside. Need to sew a little extension on to make it tidier and more official.

But long-term I think that with the bottle cage placement on that bike I should go for a bag that is more rectangle shaped and uses all the available space I have under the top tube.

edit: didn't see squirrel's post but yeah, this is the idea. One thing sticking with this would allow is for me to insert a small pad on that tail section so i could still shoulder the bike for carrying.

deadforkinglast wrote:
But honestly, I have no idea how I am going to follow through on that plan and I already have a pretty rad bike. I think I just like fucking with my bikes.

Fri, 12/19/2014 - 15:44
ShartAttack
ShartAttack's picture

Really all I'd probably need/want is a long band with velcro. I should try to talk my mom into making such a thing, I imagine it'd be pretty easy. Sew a couple layers of cordura together, sew velcro along the length of it, bam done.

Only reason I'm resistant to the frame bag is that I know I'd just pack it with more shit and I'm trying to reduce the amount of stuff I pack with me.

Former RAGBRAI enthusiast

Fri, 12/19/2014 - 15:58
JUGE FREDD
JUGE FREDD's picture
(Reply to #283)

Andrew_Squirrel wrote:
The other option is pinning the poles between the top of the Jandd frame bag & the top-tube and using the velcro to keep it in place. There is enough slack in the Jandd mounting velcro to fit most 1-person tent poles.

with the new daisy-chain models you can make the straps whatever size you want:


Cheeseburger saddle bag is MOLLE compatible! by blasdelf, on Flickr

It's a struggle, but you cut out his tongue, and his last words are "atmo atmo Atmo ATMO ATMOOOOOGORIHGGHRSHGGRLMGGMMGMgrrglegurglegrr....."
– akasnowmaaan

Fri, 12/19/2014 - 16:01
NOVELTYNAME
NOVELTYNAME's picture

fred that front end looks wag tastic

"Folks want options!"

Fri, 12/19/2014 - 16:03
JUGE FREDD
JUGE FREDD's picture
(Reply to #285)

jimmythefly wrote:
But long-term I think that with the bottle cage placement on that bike I should go for a bag that is more rectangle shaped and uses all the available space I have under the top tube.

these look like an interesting advance over revelate: https://www.apidura.com/shop/?sort=frame

It's a struggle, but you cut out his tongue, and his last words are "atmo atmo Atmo ATMO ATMOOOOOGORIHGGHRSHGGRLMGGMMGMgrrglegurglegrr....."
– akasnowmaaan

Fri, 12/19/2014 - 16:03
Blakey
Blakey's picture
(Reply to #286)

JUGE FREDD wrote:
these look like an interesting advance over revelate: https://www.apidura.com/shop/?sort=frame

My local has stock and a few staff are using them. Also have a set of fairweather bags in stock. Can take comparison shots/answer questions as required.

Fri, 12/19/2014 - 20:14
lukasz
lukasz's picture

Was gonna buy one last summer but didn't want to spend that much money.

Fri, 12/19/2014 - 20:32
ShartAttack
ShartAttack's picture

I hadn't actually looked at my Mountainsmith tent much since I hadn't actually been able to camp in it yet. Turns out the poles are short enough to fit in my Ortliebs! Guess I just need a stuff sack or 2 to split up the tent body then, that's easy!

Former RAGBRAI enthusiast

Sat, 12/20/2014 - 00:04
JUGE FREDD
JUGE FREDD's picture
(Reply to #289)

Blakey wrote:
Also have a set of fairweather bags in stock.

this looks pretty interesting: http://store.fairweather.cc/store/p12/CORNER_BAG.html

also does their seat bag have a pocket or something under the logo on top?

It's a struggle, but you cut out his tongue, and his last words are "atmo atmo Atmo ATMO ATMOOOOOGORIHGGHRSHGGRLMGGMMGMgrrglegurglegrr....."
– akasnowmaaan

Sat, 12/20/2014 - 00:06
JUGE FREDD
JUGE FREDD's picture
(Reply to #290)

Andrew_Squirrel wrote:
I didn't use these methods because the Big Agnes poles I use are an all-in-one-piece pole system with these big, awkward triangle joints at either end. It makes the process of getting them into a tight, compact bundle extremely difficult (you can see in the photos above that I'm using two velcro wraps to keep the bundle from exploding into their resting state as a full tent).

I just got this ultranerd tent that I've been lusting after for years: http://eastonoutfitters.com/product/kilo-2p/

stacked coupons let me get Backcountry.com's last one for too cheap to ignore

the carbon poles are all-in-one and oddly squeaky on each other, but the junctions are done with small bent aluminum ends instead of big pieces, so it bundles up small enough to be perfect for a tangle-style frame bag

but I'm thinking I might be able to finally do something useful with my behind-the-seattube bosses, if I can make a bolt-on version of your pole coozie

It's a struggle, but you cut out his tongue, and his last words are "atmo atmo Atmo ATMO ATMOOOOOGORIHGGHRSHGGRLMGGMMGMgrrglegurglegrr....."
– akasnowmaaan

Sat, 12/20/2014 - 00:47
Blakey
Blakey's picture
(Reply to #291)

JUGE FREDD wrote:
also does their seat bag have a pocket or something under the logo on top?

Yep

Sat, 12/20/2014 - 06:46
hiljentaa
hiljentaa's picture
(Reply to #292)

JUGE FREDD wrote:
I just got this ultranerd tent that I've been lusting after for years: http://eastonoutfitters.com/product/kilo-2p/

Does that really weigh 4.36 pounds? If so, there are way lighter options for a lot less $$$.

Why'd you go with that? Packability?

Sat, 12/20/2014 - 11:06
rauce
rauce's picture

Yeah, huh? The tents I've been researching/lusting after are like 2lbs.

Sat, 12/20/2014 - 11:11
Andrew_Squirrel
Andrew_Squirrel's picture

I finally bought a digital scale yesterday and for the first time weighed my advertised 2 person, 2 pound tent and was disappointed to find it came out a bit over 4 1/2 pounds including the footprint, stakes, fly, body, poles, bags.
smiley

Poles: 429g
New DIY Pole bag version 1.0: 94g
Fly: 583g
Footprint, stakes & bag: 301g
Body: 744g

Side note: I've been interested in knowing things like how much water weight a tent fly absorbs overnight before being packed away and adding to the overall weight. My Big Agnes Seedhouse is made from a "waterproof" material that keeps you completely dry during rainstorms but even after a vigorous shake in the morning has absorbed quite a bit of moisture. Would a slightly heavier weight waterproof (as-in beaded up water droplets with zero absorption) weigh less after a rainstorm? Overall I like how quickly the light-weight Big Agnes fly dries in the sun but I'm amazed how heavy it seems after a good soaking.

Sat, 12/20/2014 - 14:18
Andrew_Squirrel
Andrew_Squirrel's picture
(Reply to #295)

JUGE FREDD wrote:
but I'm thinking I might be able to finally do something useful with my behind-the-seattube bosses, if I can make a bolt-on version of your pole coozie

Yes, this sounds awesome.

Sat, 12/20/2014 - 14:21
JUGE FREDD
JUGE FREDD's picture
(Reply to #296)

hiljentaa wrote:
JUGE FREDD wrote:
I just got this ultranerd tent that I've been lusting after for years: http://eastonoutfitters.com/product/kilo-2p/

Does that really weigh 4.36 pounds? If so, there are way lighter options for a lot less $$$.

Why'd you go with that? Packability?

It weighs half that much, it was designed to be a kilogram hence the name

It's a struggle, but you cut out his tongue, and his last words are "atmo atmo Atmo ATMO ATMOOOOOGORIHGGHRSHGGRLMGGMMGMgrrglegurglegrr....."
– akasnowmaaan

Sat, 12/20/2014 - 16:14
lukasz
lukasz's picture

What's with the advertised weight? Includes a bunch of pouches or something?

Sat, 12/20/2014 - 16:22
oogens
oogens's picture

dimensional weight?

Sun, 12/21/2014 - 02:56
crowding
crowding's picture

Prototyped a rear sack.

tried to keep it wedgelike in the front, but there is still some thigh rub

def needs compression straps instead of velcro. Actually a standard round compression bag might turn out to work fine for this placement.

Sun, 12/21/2014 - 18:10
crowding
crowding's picture

Yeah, this is more promising:

the coroplast adds a lot of needed lateral stability

Tue, 12/30/2014 - 19:38

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