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Search: Posts Made By: Paulc
Showing results 1 to 19 of 19
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Forum: General Cycling Discussion
07-23-19, 06:19 PM
Replies: 37
Views: 3,802
Posted By Paulc

It is a tough one

It is a tough one
Forum: General Cycling Discussion
07-23-19, 05:58 PM
Replies: 37
Views: 3,802
Posted By Paulc

https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulle...

https://cimg8.ibsrv.net/gimg/bikeforums.net-vbulletin/1079x640/21_5a2eb49f22caf39fe9129605b1bc24f8afa09943.jpg
Forum: General Cycling Discussion
07-23-19, 05:55 PM
Replies: 37
Views: 3,802
Posted By Paulc

Yes it can The image attached is a 21t with...

Yes it can

The image attached is a 21t with internal clearance for an 18t
Forum: General Cycling Discussion
07-23-19, 05:47 PM
Replies: 37
Views: 3,802
Posted By Paulc

The jockey would swing on a lever arm. It doesn't...

The jockey would swing on a lever arm. It doesn't get much simpler than that.

It allows for more gears because there is only so much of a cross chain angle possible before the chain will chatter...
Forum: General Cycling Discussion
07-23-19, 05:38 PM
Replies: 37
Views: 3,802
Posted By Paulc

You are mistaken. The cassette shown has a...

You are mistaken. The cassette shown has a typical mountain bike sprocket stack. There is not a larger jump when the chain transitions to the other cassette half
Forum: General Cycling Discussion
07-23-19, 05:05 PM
Replies: 37
Views: 3,802
Posted By Paulc

Gears can't match the efficiency of a roller chain

Gears can't match the efficiency of a roller chain
Forum: General Cycling Discussion
07-23-19, 05:03 PM
Replies: 37
Views: 3,802
Posted By Paulc

It Requires 2 more sprocket widths over the total...

It Requires 2 more sprocket widths over the total on the cassette
Forum: General Cycling Discussion
07-22-19, 05:47 PM
Replies: 37
Views: 3,802
Posted By Paulc

I understand your opinion. But when you...

I understand your opinion.

But when you factor in that the rear derailleur is eliminated as well as the entire front shift gear, it comes out at least wash in parts count and weight, could be...
Forum: General Cycling Discussion
07-22-19, 05:25 PM
Replies: 37
Views: 3,802
Posted By Paulc

Non crosschaining cassette concept

https://youtu.be/aZaK-7sMiTQ


What do you guys think of this telescoping cassette concept I came up with?


It would eliminate cross chaining, and thereby:


1. Improve efficiency
Forum: General Cycling Discussion
07-22-19, 05:23 PM
Replies: 24
Views: 2,328
Posted By Paulc

Check out my non cross chaining cassette concept...

Check out my non cross chaining cassette concept in General Cycling Discussions
Forum: Hybrid Bicycles
07-22-19, 05:10 PM
Replies: 66
Views: 22,995
Posted By Paulc

V brake with fat tires. I'm surprised that combo...

V brake with fat tires. I'm surprised that combo got even the one vote.

If you're going fat go disk
Forum: Hybrid Bicycles
07-22-19, 05:04 PM
Replies: 114
Views: 27,969
Posted By Paulc

I don't where one on the bike trails, But You...

I don't where one on the bike trails, But You should always where one when riding with car traffic!
Forum: General Cycling Discussion
09-30-13, 09:48 PM
Replies: 6
Views: 1,068
Posted By Paulc

Cadence drive transmission

In addition to my RBS, I’m also working on a transmission that would have a constant cadence. The pedaling effort would wind a constant force spring and the spring force would drive the bike. It...
Forum: General Cycling Discussion
09-23-13, 10:08 PM
Replies: 22
Views: 2,901
Posted By Paulc

As stated, a light spring was used to in the...

As stated, a light spring was used to in the video.
See competing design: (much heavier)
EPA, working with the University of Michigan
http://www.epa.gov/oms/technology/research/research-hhb.htm...
Forum: General Cycling Discussion
09-23-13, 09:59 PM
Replies: 22
Views: 2,901
Posted By Paulc

8 lbs, up to 90%

8 lbs, up to 90%
Forum: General Cycling Discussion
09-23-13, 09:59 PM
Replies: 22
Views: 2,901
Posted By Paulc

8 lbs, up to 90%

8 lbs, up to 90%
Forum: General Cycling Discussion
09-23-13, 09:58 PM
Replies: 22
Views: 2,901
Posted By Paulc

You are wrong. The percentage of energy reclaimed...

You are wrong. The percentage of energy reclaimed is the same per vehicle weight. Hub weight is eight pounds.
Forum: General Cycling Discussion
09-23-13, 09:52 PM
Replies: 22
Views: 2,901
Posted By Paulc

No, it uses a constant torque spring, and the...

No, it uses a constant torque spring, and the wheel will not lock up when the spring is wound. It will revert to a normal braking at that point.
Forum: General Cycling Discussion
09-23-13, 05:58 PM
Replies: 22
Views: 2,901
Posted By Paulc

Regenerative Braking System for bicycles

I invented a regenerative breaking system for bicycles. See video below:

http://www.youtube.com/watch?v=wxhyJAr-YCM

I'm thinking of offering it for sale on Kickstarter, but need to determine...
Showing results 1 to 19 of 19


 
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