Bike design as a hobby

_Lan
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_Lan
Edited Date/Time 6/21/2021 7:30am
Having a lot of free time during the lockdown had me itching to design another bike. Here is the result. Almost the same geometry as the first one.

475mm reach
110mm head tube length
436mm chainstay length
80 degrees seat angle
63.5 head angle
200mm/210mm travel

changeable leverage curve by using different front shock mounts

Also made a mount for my older 216x63 shocks that gives me 178mm rear travel. Coupled with some old 160mm forks will give me about 64.5 head angle.










What do you guys think? Anything I missed? Appreciate any input from people who actually know stuff. I'm just learning as I go.
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Angu58
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Angu58 5/3/2020 8:39pm
5/3/2020 8:39pm
looks pretty good. Have you considered the seat tube length if you are on the taller side?
_Lan
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_Lan 5/3/2020 9:23pm
5/3/2020 9:23pm
Angu58 wrote:
looks pretty good. Have you considered the seat tube length if you are on the taller side?
I have. seat tube length is 410mm. Should fit a 185mm or longer dropper for me being 6ft
Angu58
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Angu58 5/3/2020 9:35pm
5/3/2020 9:35pm
Fair enough. I’m kind of an idiot when it comes to bike design, but it looks well thought out, and has some nice looks.
DatCurryGuy 7/19/2020 4:03pm
7/19/2020 4:03pm
Hi! really good design ! What is the software you are using to make 3d model ? I have plenty idea of bike frame and i want to make them in 3d.
Thank's!
jezken
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jezken 9/9/2020 11:53pm
9/9/2020 11:53pm
DatCurryGuy wrote:
Hi! really good design ! What is the software you are using to make 3d model ? I have plenty idea of bike frame and i...
Hi! really good design ! What is the software you are using to make 3d model ? I have plenty idea of bike frame and i want to make them in 3d.
Thank's!
Looks like solidworks.


Cool design man - not enough waterbottle mounts though. Plz add more! Tongue
_Lan
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_Lan 9/15/2020 3:26am
9/15/2020 3:26am
DatCurryGuy wrote:
Hi! really good design ! What is the software you are using to make 3d model ? I have plenty idea of bike frame and i...
Hi! really good design ! What is the software you are using to make 3d model ? I have plenty idea of bike frame and i want to make them in 3d.
Thank's!
jezken wrote:
Looks like solidworks.


Cool design man - not enough waterbottle mounts though. Plz add more! Tongue
haha, I actually removed the one below the downtube. Frame is almost done. That bike check of Paul Aston and the recent popularity of mullets had me thinking what it would feel like with a higher BB and a 27.5 rear wheel. I suppose a different chainstay or seatstay and an angle set should be a cheaper way of making the bike a mullet than a completely new frame.



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spoon_
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spoon_ 10/12/2020 7:48pm
10/12/2020 7:48pm
When are you selling them :D
_Lan
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_Lan 11/12/2020 3:48am
11/12/2020 3:48am
spoon_ wrote:
When are you selling them :D
Just a one off. It's one thing to design bikes as a hobby and another to actually make a business out of it. Frame's done by the way. Will be testing it out soon and make a bike check.

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rockchomper
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rockchomper 11/12/2020 12:22pm
11/12/2020 12:22pm
spoon_ wrote:
When are you selling them :D
_Lan wrote:
Just a one off. It's one thing to design bikes as a hobby and another to actually make a business out of it. Frame's done by...
Just a one off. It's one thing to design bikes as a hobby and another to actually make a business out of it. Frame's done by the way. Will be testing it out soon and make a bike check.

That’s a gorgeous bike !!!!
spoon_
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spoon_ 11/12/2020 3:59pm
11/12/2020 3:59pm
spoon_ wrote:
When are you selling them :D
_Lan wrote:
Just a one off. It's one thing to design bikes as a hobby and another to actually make a business out of it. Frame's done by...
Just a one off. It's one thing to design bikes as a hobby and another to actually make a business out of it. Frame's done by the way. Will be testing it out soon and make a bike check.

i know, i just think it's friggin dope and would ride one
Leo Molloy 11/16/2020 3:36pm
11/16/2020 3:36pm
Wow this forum is awesome. I'm also working on a bike. I'm still in the early planning phases however I can share some details.
- its a CNC machined gearbox enduro bike
- It will be a coil only dual link design

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Big Bird
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Big Bird 11/17/2020 8:52am
11/17/2020 8:52am
I have a full sized drawing of a pull shock DH 29er ready to go. If only someone made a pull shock...
Leo Molloy 11/17/2020 1:38pm
11/17/2020 1:38pm
Big Bird wrote:
I have a full sized drawing of a pull shock DH 29er ready to go. If only someone made a pull shock...
I see those older cannondale/Fox ones on FB marketplace all the time.
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_Lan
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_Lan 11/17/2020 10:17pm
11/17/2020 10:17pm
Leo Molloy wrote:
Wow this forum is awesome. I'm also working on a bike. I'm still in the early planning phases however I can share some details. - its...
Wow this forum is awesome. I'm also working on a bike. I'm still in the early planning phases however I can share some details.
- its a CNC machined gearbox enduro bike
- It will be a coil only dual link design

Cool, keep us updated on your progress
spoon_
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spoon_ 11/18/2020 3:16am
11/18/2020 3:16am Edited Date/Time 11/18/2020 3:18am
Big Bird wrote:
I have a full sized drawing of a pull shock DH 29er ready to go. If only someone made a pull shock...
hack one together yourself?

could probably get a coil shock and reconfigure so the compression works as rebound... not ideal but it could work. probably have to run really firm valving and then lighten up the rebound stack a lot cause its now compression.

Then figure out a way to have a pull spring. Or put the spring somewhere else in the frame i guess like the cannondale DH bike
Leo Molloy 11/25/2020 11:17pm
11/25/2020 11:17pm
Hi, this is my latest design. I really like the kinematics however after looking at it more closely I realised it looks a lot like a pivot firebird or phoenix. Do you think they look similar? Should I be worried about patents, or does it look different enough?


_Lan
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_Lan 11/26/2020 2:10am
11/26/2020 2:10am Edited Date/Time 11/26/2020 2:12am
Leo Molloy wrote:
Hi, this is my latest design. I really like the kinematics however after looking at it more closely I realised it looks a lot like a...
Hi, this is my latest design. I really like the kinematics however after looking at it more closely I realised it looks a lot like a pivot firebird or phoenix. Do you think they look similar? Should I be worried about patents, or does it look different enough?


As far as I know patents don't come into play until you commercialize your product. But hey maybe you'll get an overly litigious patent troll who hints at taking legal action at you even if it's just for personal use so who knows.
_Lan
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_Lan 11/26/2020 2:15am
11/26/2020 2:15am


Been testing the bike and it's awesome. Performs like a DH bike and climbs like a trail bike.

Done testing it at 21% progressivity and currently testing the 62% progressivity shock mount.
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Leo Molloy 11/26/2020 2:53am
11/26/2020 2:53am
Do you think the 62% progression is more "poppy/playful"? It seems to be a toss up weather more linear or progressive suspension creates more support too push against.
DatCurryGuy 5/21/2021 1:04am
5/21/2021 1:04am Edited Date/Time 5/21/2021 1:04am
Leo Molloy wrote:
[img]https://p.vitalmtb.com/photos/forums/2021/05/20/10822/s1200_IMG_20210520_165408.jpg[/img] [img]https://p.vitalmtb.com/photos/forums/2021/05/20/10823/s1200_IMG_20210520_165405.jpg[/img] [img]https://p.vitalmtb.com/photos/forums/2021/05/20/10824/s1200_IMG_20210520_154521.jpg[/img]



Looks really good ! The frame is 3d printed ? You went for a linkage driven single pivot or is it just for the simplicity of printing ?
Leo Molloy 5/21/2021 8:18pm
5/21/2021 8:18pm
Leo Molloy wrote:
[img]https://p.vitalmtb.com/photos/forums/2021/05/20/10822/s1200_IMG_20210520_165408.jpg[/img] [img]https://p.vitalmtb.com/photos/forums/2021/05/20/10823/s1200_IMG_20210520_165405.jpg[/img] [img]https://p.vitalmtb.com/photos/forums/2021/05/20/10824/s1200_IMG_20210520_154521.jpg[/img]



DatCurryGuy wrote:
Looks really good ! The frame is 3d printed ? You went for a linkage driven single pivot or is it just for the simplicity of...
Looks really good ! The frame is 3d printed ? You went for a linkage driven single pivot or is it just for the simplicity of printing ?
It's a prototype 3D printed out of PLA plastic with metal rods in it for rigidity. It's a Dual link design that's quite similar to what is found on the Pivot phoenix.
Primoz
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Primoz 5/22/2021 12:48am
5/22/2021 12:48am
Where will you put the second link? Add another short link? Or make it a horst link?
Big Bird
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Big Bird 5/22/2021 8:13am
5/22/2021 8:13am
Primoz wrote:
Where will you put the second link? Add another short link? Or make it a horst link?
Isn't it already there tucked in behind the BB?
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Primoz 5/22/2021 8:35am
5/22/2021 8:35am
Indeed it does appear so, but it's nicely hidden.

In any case, the rear triangle does need a brace between the two pivots.
hitar_potar 5/27/2021 12:02am
5/27/2021 12:02am
Leo Molloy wrote:
[img]https://p.vitalmtb.com/photos/forums/2021/05/20/10822/s1200_IMG_20210520_165408.jpg[/img] [img]https://p.vitalmtb.com/photos/forums/2021/05/20/10823/s1200_IMG_20210520_165405.jpg[/img] [img]https://p.vitalmtb.com/photos/forums/2021/05/20/10824/s1200_IMG_20210520_154521.jpg[/img]



DatCurryGuy wrote:
Looks really good ! The frame is 3d printed ? You went for a linkage driven single pivot or is it just for the simplicity of...
Looks really good ! The frame is 3d printed ? You went for a linkage driven single pivot or is it just for the simplicity of printing ?
Leo Molloy wrote:
It's a prototype 3D printed out of PLA plastic with metal rods in it for rigidity. It's a Dual link design that's quite similar to what...
It's a prototype 3D printed out of PLA plastic with metal rods in it for rigidity. It's a Dual link design that's quite similar to what is found on the Pivot phoenix.
You mean the PLA plastic used by the 3d printer has metal rods inside it in order to make it stronger? What model exactly is this plastic?
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Primoz 5/27/2021 11:46am
5/27/2021 11:46am
I'd say the print has some bars glued inside the tubes to make it stronger. Can't really see a 3D printer printing 'bars'. Fibres or the like maybe, but even then you use glass or maaaaybe carbon fibres in the filament Smile
_Lan
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_Lan 6/2/2021 2:11am
6/2/2021 2:11am
Leo Molloy wrote:
Do you think the 62% progression is more "poppy/playful"? It seems to be a toss up weather more linear or progressive suspension creates more support too...
Do you think the 62% progression is more "poppy/playful"? It seems to be a toss up weather more linear or progressive suspension creates more support too push against.
It's quite plush but feels like lacking midstroke support. Also feels like hitting an abrupt wall deep in the travel without nearing the bottom out. Returned to about 28% and feels just right.

Cool looking bike by the way. Is the 3d printed one actually rideable?

Went back to this bike right now as I look into making the next one out of carbon fiber.


3
hitar_potar 6/2/2021 11:38pm
6/2/2021 11:38pm Edited Date/Time 6/3/2021 1:42am
Leo Molloy wrote:
Do you think the 62% progression is more "poppy/playful"? It seems to be a toss up weather more linear or progressive suspension creates more support too...
Do you think the 62% progression is more "poppy/playful"? It seems to be a toss up weather more linear or progressive suspension creates more support too push against.
_Lan wrote:
It's quite plush but feels like lacking midstroke support. Also feels like hitting an abrupt wall deep in the travel without nearing the bottom out. Returned...
It's quite plush but feels like lacking midstroke support. Also feels like hitting an abrupt wall deep in the travel without nearing the bottom out. Returned to about 28% and feels just right.

Cool looking bike by the way. Is the 3d printed one actually rideable?

Went back to this bike right now as I look into making the next one out of carbon fiber.


What were the details on this frame (rear hub size, headtube size and angle, bb size)? And that’s a high pivot single pivot, correct?
Also, isn’t this frame with the vertical shock your MK1 frame? And there was a more Canfield-Jedy-looking MK2 frame?
_Lan
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_Lan 6/3/2021 6:52pm
6/3/2021 6:52pm
hitar_potar wrote:
What were the details on this frame (rear hub size, headtube size and angle, bb size)? And that’s a high pivot single pivot, correct? Also, isn’t...
What were the details on this frame (rear hub size, headtube size and angle, bb size)? And that’s a high pivot single pivot, correct?
Also, isn’t this frame with the vertical shock your MK1 frame? And there was a more Canfield-Jedy-looking MK2 frame?
148mm rear hub
56/56 headtube
63.5HTA
BSA78mm

This is a high pivot horst link bike similar to the GT Fury but with a more rearward axle-path and higher anti-rise.

Yes, this is the MK1, the MK2 was the result of a long lockdown during the start of the pandemic. No riding and having to close shop meant idle hands for designing a low stand-over reverse horstlink bike similar to the Antidote Darkmatter and Devinci Wilson.

Both work fine, the MK1 is just heavier by 400 grams

Next design is a dual short link high pivot gearbox bike. I'll be taking my time with this one though as I'm in no hurry to change bikes.

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