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Search: Posts Made By: Ideologue
Showing results 1 to 40 of 40
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Forum: General Cycling Discussion
07-15-06, 02:38 PM
Replies: 75
Views: 96,454
Posted By Ideologue

That is what I meant. Poor semantics, perhaps!

That is what I meant. Poor semantics, perhaps!
Forum: General Cycling Discussion
07-14-06, 07:58 PM
Replies: 75
Views: 96,454
Posted By Ideologue

Power amplifies torque.

Power amplifies torque.
Forum: General Cycling Discussion
07-13-06, 11:29 PM
Replies: 75
Views: 96,454
Posted By Ideologue

I am yet to study the above links thoroughly but...

I am yet to study the above links thoroughly but it seems to me, and using the equation posted early on in this very thread, that the longer the crank arms the more leverage, ergo more torque. But...
Forum: General Cycling Discussion
07-13-06, 11:11 PM
Replies: 75
Views: 96,454
Posted By Ideologue

Thanks for your post and the links, they look...

Thanks for your post and the links, they look pretty good to me!
Forum: General Cycling Discussion
07-12-06, 10:22 PM
Replies: 75
Views: 96,454
Posted By Ideologue

Hmm, I really need to study this subject some...

Hmm, I really need to study this subject some more. Can anyone recommend a decent tutorial site on torque forces, power, etc.?

The interesting question is: Cog and sprocket design? I thought that...
Forum: General Cycling Discussion
07-12-06, 12:49 AM
Replies: 75
Views: 96,454
Posted By Ideologue

Mine was a 4-stroke (KLR 250), and it certainly...

Mine was a 4-stroke (KLR 250), and it certainly did like to rev a lot (4,000 RPM = 40mph). Its maximum power output was around 21 - 27hp.
Forum: General Cycling Discussion
07-12-06, 12:47 AM
Replies: 75
Views: 96,454
Posted By Ideologue

Well I am interested in this topic mainly due to...

Well I am interested in this topic mainly due to two reasons: I am designing a bike (and wish to do a good job of it) and I am going to study mechanical engineering next academic year. I suck at the...
Forum: General Cycling Discussion
07-12-06, 12:36 AM
Replies: 75
Views: 96,454
Posted By Ideologue

Thanks for your reply. That's a lot of torque...

Thanks for your reply. That's a lot of torque those little 2mm wide sprockets have to deal with!
Forum: General Cycling Discussion
07-11-06, 10:52 PM
Replies: 75
Views: 96,454
Posted By Ideologue

Thank you for clearing that up for me! It is...

Thank you for clearing that up for me! It is surprising to learn that a rider is capable of producing 5 times the torque of my old motorcycle.
Forum: General Cycling Discussion
07-11-06, 09:10 PM
Replies: 75
Views: 96,454
Posted By Ideologue

Maximum Human Torque

I read that the maximum amount of torque momentarily produced by a professional (racing) cyclist is in the region of 1,000 Inch Pounds. That is 83.3r Foot Pounds, or 112.984 829 333 Newton Meters.
...
Forum: Bicycle Mechanics
07-11-06, 09:08 PM
Replies: 4
Views: 532
Posted By Ideologue

Silent Freewheels

Are all silent freewheels the roller-ramp type, or is there such a thing as silent pawl one-way clutches (freewheels), or indeed any other type(s)?

What are your experiences with silent or quiet...
Forum: Bicycle Mechanics
06-06-06, 04:49 PM
Replies: 7
Views: 4,426
Posted By Ideologue

Thanks for your reply. I am trying to learn how...

Thanks for your reply. I am trying to learn how to measure all of the forces affecting a bicycle because I am designing my own at the moment and wish to optimize my design. I also want to study...
Forum: Bicycle Mechanics
06-06-06, 03:22 PM
Replies: 7
Views: 4,426
Posted By Ideologue

Moment of Inertia (force to turn wheel)

Google has not helped me very much on this matter:

I need to calculate the moment of inertia of a bicycle wheel by using equations only (let’s assume the wheel does not yet exist).

I think I...
Forum: Bicycle Mechanics
05-26-06, 11:20 AM
Replies: 45
Views: 2,676
Posted By Ideologue

I don't know, you tell me? Perhaps other...

I don't know, you tell me? Perhaps other equations are used for such calculations, such as ones I did not post on because they are very clear to me?
Forum: Bicycle Mechanics
05-26-06, 11:18 AM
Replies: 45
Views: 2,676
Posted By Ideologue

Companies such as Boeing tend to rely on CAD, not...

Companies such as Boeing tend to rely on CAD, not a guy with a ruler, pencil and a memorized list of equations. I was not writing of Boeing, etc., but one only need spend two minutes online to learn...
Forum: Bicycle Mechanics
05-26-06, 10:20 AM
Replies: 45
Views: 2,676
Posted By Ideologue

Thanks again, Yes. And I see that I made an...

Thanks again, Yes. And I see that I made an error:

Error Correction:

I used the the 'A' symbol
twice in the air drag equations. I should have converted it into 'f'
to represent the vehicle's...
Forum: Bicycle Mechanics
05-26-06, 01:09 AM
Replies: 45
Views: 2,676
Posted By Ideologue

Thank you for your help, Yes. I am left wondering...

Thank you for your help, Yes. I am left wondering why this professional engineering reference book omits the ‘g’ factor from it’s inclined plane equation? It is rather confusing to a (reborn)...
Forum: Bicycle Mechanics
05-25-06, 04:53 PM
Replies: 45
Views: 2,676
Posted By Ideologue

Allow me to rephrase my question: Please...

Allow me to rephrase my question:

Please help me with these equations. Are they right or are they wrong?
Forum: Bicycle Mechanics
05-25-06, 04:49 PM
Replies: 45
Views: 2,676
Posted By Ideologue

I am not designing a race bike. I am trying to...

I am not designing a race bike. I am trying to keep weight down as, of course it is the sensible thing to do, but also because I do not want a bike that weighs 100kg. I need the equations (that I...
Forum: Bicycle Mechanics
05-25-06, 04:44 PM
Replies: 45
Views: 2,676
Posted By Ideologue

Blasphemy.

Blasphemy.
Forum: Bicycle Mechanics
05-25-06, 04:42 PM
Replies: 45
Views: 2,676
Posted By Ideologue

With all due respect, pre-conceived notions seem...

With all due respect, pre-conceived notions seem to be dictating your erroneous thoughts. I am having trouble clarifying the very basic equations. I would bet that most bike builders do not even...
Forum: Bicycle Mechanics
05-25-06, 04:22 PM
Replies: 45
Views: 2,676
Posted By Ideologue

I disagree. Going on my prior knowledge and the...

I disagree. Going on my prior knowledge and the design work I have created thus far (and various other reasons) these equations are critical to the success of what I am doing. Of course other things...
Forum: Bicycle Mechanics
05-25-06, 04:15 PM
Replies: 45
Views: 2,676
Posted By Ideologue

Thank you. I have seen that site before but did...

Thank you. I have seen that site before but did not find it all that helpful. Perhaps I am reading it wrongly?
Forum: Bicycle Mechanics
05-25-06, 04:11 PM
Replies: 45
Views: 2,676
Posted By Ideologue

Thank you very much for that. I was wondering if...

Thank you very much for that. I was wondering if gravity ('g') should be used or not in the inclined plane constant speed equation. Some say yes but according to the Newnes Engineer's Reference Book...
Forum: Bicycle Mechanics
05-25-06, 04:03 PM
Replies: 45
Views: 2,676
Posted By Ideologue

Thank you for your recommendations. I am...

Thank you for your recommendations.

I am designing this bike from the ground up. I am redesigning many of the components including a new type of derailleur gear changer. I am not using tubes, it...
Forum: Bicycle Mechanics
05-25-06, 03:53 PM
Replies: 45
Views: 2,676
Posted By Ideologue

Thank you for your advice, but I need help with...

Thank you for your advice, but I need help with those specific equations, and as soon as possible, please.

And I am with Mike Burrows in that I will not be using a computer (beyond net research)...
Forum: Bicycle Mechanics
05-25-06, 03:45 PM
Replies: 45
Views: 2,676
Posted By Ideologue

I am not building a tube-based bike. The...

I am not building a tube-based bike. The equations I requested help with are fundamental to my ‘project’. I regret stating they were for a bike design; perhaps if I said ‘please help me with these...
Forum: Bicycle Mechanics
05-25-06, 03:41 PM
Replies: 45
Views: 2,676
Posted By Ideologue

Thank you for the recommendation. I know of that...

Thank you for the recommendation. I know of that book and I may buy a copy. I have read some articles by its’ author and as a result I am not all that sure it will provide me with the specific...
Forum: Bicycle Mechanics
05-25-06, 03:38 PM
Replies: 45
Views: 2,676
Posted By Ideologue

All forces and stresses are being examined. The...

All forces and stresses are being examined. The particular equations I posted (to ask for help with) are the ones I seek confirmation on; the others seem straight forward enough.

Perhaps I should...
Forum: Bicycle Mechanics
05-25-06, 03:32 PM
Replies: 45
Views: 2,676
Posted By Ideologue

Before or after I build it? :rolleyes:

Before or after I build it? :rolleyes:
Forum: Bicycle Mechanics
05-24-06, 10:21 PM
Replies: 45
Views: 2,676
Posted By Ideologue

How about the inclined plane equations and the...

How about the inclined plane equations and the acceleration-air resistance equation for which there is a choice of two equations per question (I put them all in as I do not know which ones are right)?
Forum: Bicycle Mechanics
05-24-06, 10:09 PM
Replies: 45
Views: 2,676
Posted By Ideologue

Basic Physics Equations (Bike Design)

I am designing a bike (I have been for a while now) and I would like to go about doing it in as scientific a way as possible.

I am trying to estimate the various forces the bike will need to cope...
Forum: Bicycle Mechanics
11-28-04, 10:49 PM
Replies: 15
Views: 673
Posted By Ideologue

2D. I was just trying to make a basic point to...

2D. I was just trying to make a basic point to point straight line drawing (+ circles for wheels), to help finalize the bikes geometric basics.

For example, on, say the x axis I plotted a point at...
Forum: Bicycle Mechanics
11-28-04, 03:55 PM
Replies: 15
Views: 673
Posted By Ideologue

Thanks very much for the links, I have now...

Thanks very much for the links, I have now registered with idriders.

I took a look at the files section and saw a text file on 'J' shaped axel path myths explained. I downloaded it, but...
Forum: Bicycle Mechanics
11-28-04, 03:17 PM
Replies: 15
Views: 673
Posted By Ideologue

Thanks for the reply. Of course I have...

Thanks for the reply.

Of course I have drawn many diagrams already but forsooth, torpor, my lack of precision due to boredom, and my inability to maintain a decent attention level for prolonged...
Forum: Bicycle Mechanics
11-25-04, 05:09 PM
Replies: 15
Views: 673
Posted By Ideologue

Front Suspension Design

I am designing a new bike from scratch. The front suspension will be a multi-link design allowing for a 'J' shaped axel path, similar to the Whyte PRST.

The problem I have is my lack of...
Forum: Bicycle Mechanics
06-22-04, 02:41 PM
Replies: 7
Views: 715
Posted By Ideologue

I guess that I will only discover the true...

I guess that I will only discover the true benefits of 2wd after I have used it 'out in the field'. With both assist engines combined, and also peddling, there should be lots of power available. I...
Forum: Bicycle Mechanics
06-22-04, 02:21 PM
Replies: 7
Views: 715
Posted By Ideologue

Prey enlighten me. If my plan is so idiotic,...

Prey enlighten me. If my plan is so idiotic, please tell me how.

Regarding your comments of purchasing a moped or riding the bus. It seems apparent that you are motivated only to waste my time,...
Forum: Bicycle Mechanics
06-21-04, 07:35 PM
Replies: 7
Views: 715
Posted By Ideologue

The electric motor is intended to be used as a...

The electric motor is intended to be used as a removable 'assist' motor. The bike shall certainly have pedals, and will be used just as any ordinary bicycle is.

The bike I intend to build will...
Forum: Bicycle Mechanics
06-21-04, 07:05 PM
Replies: 7
Views: 715
Posted By Ideologue

Definitive electric drive. (For a 2wd bike).

I have broken this post up a little as it is rather long. Hopefully it will be easier to read this way.


I seek the advise of discernable electric drive enthusiasts.

I am currently in the...
Showing results 1 to 40 of 40


 
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