High performance & durability Cannondale Semi Recumbent

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neptronix   100 GW

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Re: High performance & durability Cannondale Semi Recumbent

Post by neptronix » May 25 2021 9:35pm

Honestly i'd like to cut the tubes off the Jekyll frame and use them for any of these purposes:
1. Safety structure?
2. Partial Aerodynamic structure?
3. Structure for storage?

I just think it would be cool to implement bits of a similarly framed and colored bike into the design of this one some how and have it look like a stock freak bike.
"Love and compassion are necessities, not luxuries. Without them, humanity cannot survive." - Dalai Lama

My first major build: 1.6kW 8T MAC motor on a Trek 4500 MTB.
Monster MTB: Leafmotor 1500w @ 4kW on a Turner O2 full suspension.
The monster scooter: Heavy duty Cannondale semi recumbent - under construction.
Blue Dream: Maxaraya FS semi recumbent and high efficiency mid-drive - under construction.

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neptronix   100 GW

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Location: Utah, USA
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Re: High performance & durability Cannondale Semi Recumbent

Post by neptronix » May 28 2021 3:06pm

Frame's here.

Omg it's a piece of art and i'm tempted to take this rear 18" motorcycle wheel i'm putting together and stick it on this and make a e-dirtbike instead :lol:

Seriously how could i not, and maybe find another cheaper donor :lol:
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"Love and compassion are necessities, not luxuries. Without them, humanity cannot survive." - Dalai Lama

My first major build: 1.6kW 8T MAC motor on a Trek 4500 MTB.
Monster MTB: Leafmotor 1500w @ 4kW on a Turner O2 full suspension.
The monster scooter: Heavy duty Cannondale semi recumbent - under construction.
Blue Dream: Maxaraya FS semi recumbent and high efficiency mid-drive - under construction.

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Chalo   100 GW

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Re: High performance & durability Cannondale Semi Recumbent

Post by Chalo » May 28 2021 8:54pm

neptronix wrote:
May 28 2021 3:06pm
Frame's here.

Omg it's a piece of art and i'm tempted to take this rear 18" motorcycle wheel i'm putting together and stick it on this and make a e-dirtbike instead :lol:

Seriously how could i not, and maybe find another cheaper donor :lol:
Fab a longtail swingarm and make a squooshy cargo bike!
This is to express my gratitude to Justin of Grin Technologies for his extraordinary measures to save this forum for the benefit of all.

99t4   100 W

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Re: High performance & durability Cannondale Semi Recumbent

Post by 99t4 » May 30 2021 9:28pm

For a FS, there's a lot of room in that (not quite a) triangle, a definite plus.

Have you ever ridden a headshok? I have one, wouldn't classify it as "squooshy ." It was a good option in its day (strong and lightweight), but telescoping fork performance has long surpassed it.

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neptronix   100 GW

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Re: High performance & durability Cannondale Semi Recumbent

Post by neptronix » May 31 2021 11:12am

The Cannondale has a headshok and the front end rode quite well. Not that the front really needs excellent suspension anyway.
I do think many of Cannondale's suspension designs are unnecessarily contrarian and goofy.. but goddamn if the older frames aren't great designs, both aesthetically and mechanically.

I have some great news and hopefully this is useful to anyone with a cannondale bent/easy rider in the future. The ~2002 Jekyll swingarm is a complete match in every measurable dimension.
IMG_20210529_165350453.jpg
IMG_20210529_165350453.jpg (1.76 MiB) Viewed 83 times
The only noticeable difference is that there's a bit more metal on the disc side of the rear dropout. That's it.
"Love and compassion are necessities, not luxuries. Without them, humanity cannot survive." - Dalai Lama

My first major build: 1.6kW 8T MAC motor on a Trek 4500 MTB.
Monster MTB: Leafmotor 1500w @ 4kW on a Turner O2 full suspension.
The monster scooter: Heavy duty Cannondale semi recumbent - under construction.
Blue Dream: Maxaraya FS semi recumbent and high efficiency mid-drive - under construction.

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neptronix   100 GW

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Posts: 15687
Joined: Jun 15 2010 5:56pm
Location: Utah, USA
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Re: High performance & durability Cannondale Semi Recumbent

Post by neptronix » May 31 2021 4:43pm

Ok, back from the bike shop. They're fitting new bearings to the new swingarm.

The new swingarm's shock attachment point is slightly rounded.. like by 0.5mm.. three of the most skilled employees agree that with just a bigger washer.. this is OK to use and should prevent further damage. At worst, the potential failure is less catastrophic than the original swingarm with the deep tiger stripe cuts on it... and that i should keep the tiger stripe one as a spare.

I think the cannondale swingarm would probably be safe to use on the Jekyll with low power. The Jekyll might be a better candidate for my 18" motorcycle rim experiment:
0auaujd1.jpg
0auaujd1.jpg (270.81 KiB) Viewed 70 times
"Love and compassion are necessities, not luxuries. Without them, humanity cannot survive." - Dalai Lama

My first major build: 1.6kW 8T MAC motor on a Trek 4500 MTB.
Monster MTB: Leafmotor 1500w @ 4kW on a Turner O2 full suspension.
The monster scooter: Heavy duty Cannondale semi recumbent - under construction.
Blue Dream: Maxaraya FS semi recumbent and high efficiency mid-drive - under construction.

User avatar
neptronix   100 GW

100 GW
Posts: 15687
Joined: Jun 15 2010 5:56pm
Location: Utah, USA
Contact:

Re: High performance & durability Cannondale Semi Recumbent

Post by neptronix » Jun 06 2021 9:19pm

So the swingarm fits and i'm back to the build. :D
"Love and compassion are necessities, not luxuries. Without them, humanity cannot survive." - Dalai Lama

My first major build: 1.6kW 8T MAC motor on a Trek 4500 MTB.
Monster MTB: Leafmotor 1500w @ 4kW on a Turner O2 full suspension.
The monster scooter: Heavy duty Cannondale semi recumbent - under construction.
Blue Dream: Maxaraya FS semi recumbent and high efficiency mid-drive - under construction.

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