Home Made Bikes

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Posted: Jun 13, 2022 at 4:32 Quote
merc-blue wrote:
How are you planning on moulding your seatstays?
Prepreg and a bladder? its hard to see mould features that allow this
Prepreg in an autoclave.

Posted: Jun 13, 2022 at 8:23 Quote
SleepingAwake wrote:
made some progress and I'm super stoked on the outcome so far:


getting there with all the hardware. With each part I learn the limitations of my diy CNC and it get s easier and easier.

Getting there with the hardware. This is probably the part i underestimated the most. even if it is just a small spacer ring or something, everything needs to be done and everything takes time.


seat stay moulds finished tooling after the post cure.

seat stay moulds finished tooling after the post cure.

Also got the first carbon moulds done. started with the seatstays to test material compatibility as i used some new things i haven't used before. everything worked out really nicely and I'm ready for the front triangle. Still need to make some more inserts and things like that, but one thing at a time.


seat stay moulds printed plug and some threaded rod to keep everything straight and aligned while glueing up

seat stay moulds Vacuum infusion to fully wet out the carbon fibre with high temperature epoxy resin.

If you're interested there is a full picture series on the mould construction from printed plug to finished mould in my album. And don't hesitate to shoot me a message if you're interested in additional information. I'll try not to spam too much in this thread.

honeslty spam all you want that looks awsome

Posted: Jun 13, 2022 at 10:28 Quote
Why'd you choose to use CF for the molds and not go with fiberglass since it'd be way cheaper?

Posted: Jun 13, 2022 at 11:34 Quote
NorCalNomad wrote:
Why'd you choose to use CF for the molds and not go with fiberglass since it'd be way cheaper?

thermal expansion. I think it is mostly good practice i might have gotten away with it, but didn't wanna take the risks. And carbon is expensive, but the material cost is maybe 300$ or so for the mould of the front triangle, which is not cheap, but with the cost of resin and work hours in it just not worth experimenting either.

Posted: Jun 17, 2022 at 14:23 Quote
Bike is ready to ride for the first time!

First ride was a two day enduro race in the north of France, wat a way to test the bike!

The bike performed with no issues, could not find a thing that needs to be changed. Tires were too light for the terrain so grip was not the best and got a puncture but the suspension an geometry worked great!

Posted: Jun 23, 2022 at 17:08 Quote
Holy crap, everybody's stuff looks so damn good.

Guys! This episode isn't about the goddamn seat post. Finally.

I've been lazy and not working on my garbage for the past several weeks but I've been feeling motivated again and been working on the frame.


I also started an instagram, there might be more up to date frame pics there in the near future if anybody is interested. @AlbuquerqueIdiotBox

Posted: Jul 1, 2022 at 17:27 Quote
Episodes be damned! Too excited! Guys! Look what happened today!



Is it gonna work? Don't know. At the minimum it will look awesome hanging on the wall.

Posted: Jul 3, 2022 at 1:11 Quote
grim reaper linkage technology!

what's the mistake that you've done building that you've learned the most from? Other than actually starting the project

Posted: Jul 4, 2022 at 18:01 Quote
housem8d wrote:
grim reaper linkage technology!

what's the mistake that you've done building that you've learned the most from? Other than actually starting the project

I had to look that one up, but yeah, pretty much. I like to call it "old guy street rod alternator bracket technology"

https://www.speedwaymotors.com/Aluminum-Swedged-Rods-3-8-24-Threads,5891.html

and the bit that attaches to the linkage is brake master cylinder clevis technology

https://www.speedwaymotors.com/Speedway-3-8-Inch-Fine-Thread-Steel-Clevis-End,46290.html

I truly spared no expense. I bet it'll be the only bike on the trails with actual hot rods parts on it.



That is such a good question. I've been pondering it all damn day. How do I distill such a colossal list of f*ck ups down to a single, teachable moment? I know you stipulated OTHER than starting the whole project, but....starting the whole project.

I don't know how much of my crap you've watched (sorry if it was any) but I've only ever made one frame before. And it was a hardtail. My only suspension bike experience ever has been 4 laps at angel fire bike park on a rented Commencal. I don't know what I'm doing. I have made mistakes everywhere. In the design, in the modeling, in the parts ordering, in the jig assembly, in Every. Single. Step. of the fabrication. I made a ton of mistakes in the way I reacted to shit not going the way I wanted. I've remade the seatpost twice, each set of stays twice, the connect-y bit between the chainstays 3 times, the linkage 3 times and the main pivot twice, and I guarantee I'm not done making mistakes. BUT! Every time I learned what didn't work in that case, and as long as I can learn something from the experience, it was worth having.

Some lightbulb guy said something about having never failed, just finding 10,000 ways that don't work. I'm learning a lot of ways to not build a bike. Shit, I don't know. The whole thing. Just pulling the trigger on the project has been what allowed all of those other learning moments to happen and it's really been the mistake that has taught me the most.


Or, make sure your shield gas is on. I'll let you pick Big Grin

Posted: Jul 6, 2022 at 8:30 Quote
soywater wrote:
Episodes be damned! Too excited! Guys! Look what happened today!

Is it gonna work? Don't know. At the minimum it will look awesome hanging on the wall.

As much as I hate using the term epic, I have to say that that frame…..is epic

Love it

Posted: Jul 6, 2022 at 12:39 Quote
adm750 wrote:
damn man, that's nice. Like to see the other side too....

Hello guys,

I answer with a very long delay ! Some news from this first frame : I rode 5000km with this bike and completed my first IronMan with it.
Everything works fine. I'm focusing on an MTB now Big Grin

Posted: Jul 8, 2022 at 11:06 Quote
joose wrote:

As much as I hate using the term epic, I have to say that that frame…..is epic

Love it

Thank you so much. I'm really trying to reserve judgement until I know if it's gonna, you know, work, but I am very pleased with how it looks. I got it tacked together enough that it stays together out of the jig and I couldn't resist a picture...


Posted: Jul 8, 2022 at 12:49 Quote
soywater wrote:
joose wrote:

As much as I hate using the term epic, I have to say that that frame…..is epic

Love it

Thank you so much. I'm really trying to reserve judgement until I know if it's gonna, you know, work, but I am very pleased with how it looks. I got it tacked together enough that it stays together out of the jig and I couldn't resist a picture...


BTR vibes, good job

Posted: Jul 8, 2022 at 13:52 Quote
I'm just going to call out that we've reached 1000 pages! Amazing.

Posted: Jul 12, 2022 at 10:56 Quote
Wooot!! how about a fresh new build for the 1000th page?

They look so good raw..
They look so good raw..

New enduro whip for 2022 I promise Ill cut down the cables one day
New enduro whip for 2022! I promise Ill cut down the cables one day


 
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