Sidecar Racing

[Fast Eddie]

With a vertical steering axis, turning the wheel is not trying to lift the chair, and there is no more resistance wherever the wheel is angled. Add castor and you are, and at the same time as the wheel turns, it leans to accomodate the tyre distorting. So it's "heavier" to turn.

What this means, is that without castor the steering is lighter. It'd be fuckin neer impossible to ride though, because you'd get the mean speed wobble at next to no actual speed.

aaah I see..

guess I will have to look it up. cause trailing link or whatever has the problem of too much castor angle which decreases contact patch as the wheel lifts off the ground the more you turn

I thought hub center was to keep wheel flatter and increase grip.

I'll have a read later. I don't think the agip bike has adjustable castor anyway

[Drew]

aaah I see..

guess I will have to look it up. cause trailing link or whatever has the problem of too much castor angle which decreases contact patch as the wheel lifts off the ground the more you turn

I thought hub center was to keep wheel flatter and increase grip.

I'll have a read later. I don't think the agip bike has adjustable castor anyway

Hub center steering just means that the pivot is center of the wheel. The axis is what changes with caster, or 'rake' in bike terms.

[scrivy]

Fucksakes Scrivy, can you atleast break the poor cunt after hes had a turn around the track?

I'll let you 'break in' the new boys Gordy..........

I will however have a beer with 'em

[scrivy]

hehe..

i never complained, I just need to suck myself.. that would be a winning combo.

It's called auto-fellatio............
Watch out for it at Hampsters - a certain Aussie legend can do it..... his party trick!

[Fast Eddie]

Who's seen this/remembers this (came out of an old mag)

street legal sidecar that you actually swing on if you want.. or nip down to the shops.

[Kickaha]

Who's seen this/remembers this (came out of an old mag)

street legal sidecar that you actually swing on if you want.. or nip down to the shops.

Yeah seen that, I have also have a few more like it as they seem to be able to get a "daytime wof" so no need for lights and shit (cept for brakes)

[Fast Eddie]

Hub center steering just means that the pivot is center of the wheel. The axis is what changes with caster, or 'rake' in bike terms.

yea. but I thought they use hub center steering because it lets them have much less castor or rake in an effort to keep the tyre flat on the ground when turning and keep the contact patch big.

I'm watching some dvd about sidecar racing now cause thats where I got my basic understanding from haha.. so I'll see what it says again.

[Kickaha]

but I thought they use hub center steering because it lets them have much less castor or rake in an effort to keep the tyre flat on the ground when turning and keep the contact patch big.

It is all about contact patch

[Fast Eddie]

so what have I got wrong..

more castor = more contact patch? just doesn't seem right lol

regardless it was a good excuse to start watching 'on any other sunday' again.. never knew I had it haha but remember watching it ages ago, glad I got it on my computer - can maybe make a copy onto cd/dvd if anyone wants it. just pay for post/cd. its f*ckn awesome video!

lotta 2 strokes

[Drew]

No, castor = less contact patch when you're stationary. It cambers the wheel when you turn, and when there is momentum and load on the tyre, in a perfect set up it keeps the tread flat.

However, the biggest advantage to castor is stability. Because turning the wheel literally lifts the vehicle with a castor, the weight of the bike is holding it straight.

[Fast Eddie]

No, castor = less contact patch when you're stationary. It cambers the wheel when you turn, and when there is momentum and load on the tyre, in a perfect set up it keeps the tread flat.

I'm watching the video now, and they are saying what im saying haha.. (or, im repeating what they are saying)

hub center with a setup that makes sure from full lock to full lock the edges of the wheel do not lift off the ground/wheel stays flat on the ground is supposedly better, compared to trailing/leading link setups where the rake or castor is quite vicious and the edges of the wheel lifts off the ground a bit when you turn and decreases contact patch (even in corner under load). End result is hub center gives more grip and better steering because wheel stays flat on the ground with more tyre in contact with the road at all times. So I'm still getting the message that less castor or angle as you turn the better. so having a vertical castor would be ideal for contact patch when cornering (edit: there is no doubt a lot more to it, there is camber and geometry shit and all that for a reason to make sure under cornering loads or whatever the tyre stays flat on road and contact patch is as big as possible) but would be very very hard to keep in a straight line (maybe impossible)

anyway - my brain hurts.. good chat.

check out 'on any other sunday' its mint vid on sidecar racing.

[scrivy]

regardless it was a good excuse to start watching 'on any other sunday' again.. never knew I had it haha but remember watching it ages ago, glad I got it on my computer - can maybe make a copy onto cd/dvd if anyone wants it. just pay for post/cd. its f*ckn awesome video!

Make a few copies - bring 'em up to Humpme Downs Syndrome - I'm sure people will pay for them.... I will.

[Drew]

Hmmmm, researching....

[Fast Eddie]

its def a good watch, just watching terry windle building up a chassis now haha..

[Drew]

its def a good watch, just watching terry windle building up a chassis now haha..

Burn that shit onto a disk for me. I'll PM postal addy.