FOR SALE - Drew and Alan's sidecar build

**nodrog:Me** · 25th January 2013, 17:26

Most motorbike ones are stainless arent they?

**Kickaha** · 25th January 2013, 17:35

Originally Posted by nodrog

Most motorbike ones are stainless arent they?

Some are some aren't

from Wiki Ferrous metals include steel and pig iron (with a carbon content of a few percent) and alloys of iron with other metals (such as stainless steel).

**Drew** · 25th January 2013, 17:52

The rotor is ventilated. Not cross drilled or grooved though so might cut some grooves to let the gases escape the surface contact area.

**scrivy** · 25th January 2013, 18:52

Originally Posted by Kickaha

You should explain that to Johnny B seeing as he wont two NZ titles using bikes discs and calipers
I wasn't trying to be funny Kick, just stating that when I first started racing the Busa, it had 2 bike discs like Johnnys. After 2 laps at Puke they were so hot, and blue, that they failed to work! Sowersby had raced a year before like that too, but not at our speeds. He subsequently changed it to a big mutha vented rotor and caliper. I don't wanna see anyone build a sidecar with inferior items that could allow them to get hurt. Drews re-inventing stuff and replacing things, but I was just trying to warn him of the dangers.
Also, Johnny based his machine on an F2, far lighter than our pigs.

Interesting talking to a brake specialsit who said for the weight and speeds we do we'd easily get away with unvented discs
How specialist? Chris Lawrance, Pate and others have had brake fade with awesome vented discs in place.

27.6.3a Only ferrous brakes disc’s are allowed.

So you're saying Johnny B shouldn't have won the title then??

**scrivy** · 25th January 2013, 19:05

Originally Posted by Drew

The rotor is ventilated. Not cross drilled or grooved though so might cut some grooves to let the gases escape the surface contact area.

My rotor is 265mm x 19mm wide. Brought from Les Hunters ChCH.

**Kickaha** · 25th January 2013, 19:08

Originally Posted by scrivy

So you're saying Johnny B shouldn't have won the title then??

They probably comply

Originally Posted by some knobend

How specialist? Chris Lawrance, Pate and others have had brake fade with awesome vented discs in place.

Specialist as in he does it all day every day and this was back with Battletruck which was 320kg dry, awesome vented discs dont mean anything if you don't have a good caliper/pad/fluid combo going on

Anyone ever bothered seeing just how hot their brakes get and actually matching pads up based on the temperature they get to rather than just buying the cheapest shit that fits the caliper?

**Drew** · 25th January 2013, 19:26

Originally Posted by scrivy

So you're saying Johnny B shouldn't have won the title then??

I'm not re-inventing anything bro. The rocker arm trailing shock might be un tried on chairs, but it's simple and not unheard of on bikes. Ducati use a double system of direct shock mounting on the swingarm, at the same point as a solid rod. They work either end of a rocker at the top to effect the rising shock rate. Most people don't realise that suspension compression speed is a curved graph. Further through the stoke ya go, the faster the shock compresses relative to the swingarm movement.

I will be testing 'dogleg' offsets on the rocker arm to emulate this.

As for brakes, I don't intend to fuck with what ain't broke. I have seen bike disks on chairs, but you're right, they were much lighter animals than mine.

**scrivy** · 25th January 2013, 19:41

Originally Posted by Drew

I'm not re-inventing anything bro. The rocker arm trailing shock might be un tried on chairs, but it's simple and not unheard of on bikes. Ducati use a double system of direct shock mounting on the swingarm, at the same point as a solid rod. They work either end of a rocker at the top to effect the rising shock rate. Most people don't realise that suspension compression speed is a curved graph. Further through the stoke ya go, the faster the shock compresses relative to the swingarm movement.

I will be testing 'dogleg' offsets on the rocker arm to emulate this.

As for brakes, I don't intend to fuck with what ain't broke. I have seen bike disks on chairs, but you're right, they were much lighter animals than mine.

When I say re-inventing, I mean thinking outside of the norm for sidecars. I hope it works well for you - it will.
Our heavy pigs at the speeds we're capable of going need better than bike discs, period.

**Drew** · 25th January 2013, 20:33

Originally Posted by scrivy

When I say re-inventing, I mean thinking outside of the norm for sidecars. I hope it works well for you - it will.
Our heavy pigs at the speeds we're capable of going need better than bike discs, period.

I hope it works too. Next week I'm chopping off all the shit (and it really was poorly built), the old shocks mounted to.

There is a positive to a smaller disk, more space around it allows more cooling air. It's just a case of having the right combination as Warwick says.

We're disadvantaged in some ways by having no other chair guys close for advice and help, but it can be advantageous to have to think shit up on our own.

**Fast Eddie** · 26th January 2013, 10:22

Originally Posted by Drew

We're disadvantaged in some ways by having no other chair guys close for advice and help, but it can be advantageous to have to think shit up on our own.

pff consider yourself lucky you don't have the captain offering to work on the bike for you..

you got 24/7 access to KB with all the chair fellas on it what more do you need

back to the shed with you.

**Kickaha** · 26th January 2013, 10:27

Originally Posted by Fast Eddie

pff consider yourself lucky you don't have the captain offering to work on the bike for you..

We should chip in for some tickets and send him up

**scrivy** · 26th January 2013, 10:49

Originally Posted by Drew

I hope it works too. Next week I'm chopping off all the shit (and it really was poorly built), the old shocks mounted to.
Was it built in the South Island??? LOL

We're disadvantaged in some ways by having no other chair guys close for advice and help, but it can be advantageous to have to think shit up on our own.

Give Steve 'Moly Bob Dob' Bryan a call anytime..... He loves chatting about tripods.... He'll sort ya out.