Actually

C = pi*2* radius.

I think you were thinking of the area of a circle

A = pi* (radius^2).

Sorry, I used to work as an engineer.

David Ho
TheMightyHobie18 1067

When do you take the tramp off? Do you take it off at all?
Phil

I would say, trailing flat - never. Except for the winter.
For 5 years I towed the Hawk tilted - I never took it off, but I have certainly been pushed around a bit in over 16 knots. Also on the motorway when passing trucks, you feel the gust when you get level with the front of the cab.
There was a story of a tilted Hawk that flipped when leaving Grafham after an event a few years ago. I heard afterwards that it was blowing 40 knots and that there was a cover on the cat as well, so lots of windage.

Not to be anal about this, but

circumference = Pi(Diameter^2)
or Pi((2)(radius))^2)

Don't get Wouter involved or we'll soon be talking about calculus theorems.

Don

circumferences a linear length. if you square the diameter, you will get a squared unit (i.e. area).

Circumference = Pi*2r (or Pi*diam)
Area of a circle = Pi(r^2) or Pi((D/2)^2)

Its round, black, made of rubber, filled with air, and rolls on the ground.

Thats about all I need to know about tires.

Until you go to buy one.

bring in old one...

"I need a new one of these"

Ah, life is so simple when you're young. Thanks for reminding me of the way it was.

that approach has seemed to work for me in the past... its the only reason I mention it

You got me guys, never put anything in writing without checking the facts, C=Pi X (rx2), not Pi X Rsq. Oh, the humiliation! Total loss of face...must preform sepiku immediatly...AAARRRRGGGH.

The (late) Grease Monkey

You math guys trip me out. I'm with MauganH17. Its round and black and it lets the boat roll over the hard ground to get to the soft water. Yea for water.,.,.,I think I would die if there was no water....La De Da .,., Look At the PreTTy CloudS..OOHHH Look at that one,, It looKs LIke a BoaT.,.,

I don't know about (pi)(r^2), (pi)(d), or any of that other technical stuff about how many revolutions different wheels turn.

I follow the Tower's Corollary:

The chances of a catastrophic issue when trailering is inversely proprtionate to the amount of trailer maintenance performed.

Jake,

You're absolutely right! I was heading out of my office on vacation when I wrote that note incorrectly. Yes, on vacation to sail my cat(s)!

Yes, it's a linear measurement, can't have a squared unit.

C = Pi D or C = Pi 2R

My mistake.

Raced a 40 mile distance race last week end in Ft. Walton Beach, and will be racing this week end on another 40 mile distance race in Pensacola. A good start and finish for a vacation.

NO trailer mishaps, so far.....

See you on the water!

Don
ARC22 #2226

I've put a quality 500 miles on my trailer since my last post in this thread, and its been solid. Now I just need to do this trailer tube thing.

I think if you used Delrin *rods*, instead of balls, the "races" for the bearings would be a lot easier to fab. That's essentially the concept in Cattrax, right? Plastic rods roll around outside of large aluminum tube. It reults in a large surface for "bearing" the load.