It isn't worth a punch up. I'd bet three minutes before they realised it wasn't going anywhere.Originally Posted by Henk
Ta
It isn't worth a punch up. I'd bet three minutes before they realised it wasn't going anywhere.
Unknown Disorder
You don't give them much credit for brains. I say a minute and a half.
Stock is best
Scooter boy
I think I need to talk to more people that race big chairs too, there's a fair few areas I havent yet got a grasp on.
I'll have a dig for some pics of rear ends. I like the neatness of some of the axle arrangements but have not had a close inspection of any in the flesh. The other guys over here although helpful tend not to be very thorough with explanations and dont do much internet so it can be quite hard to get to the bottom of things at times and usually I end up going off and doing loads of research to make sure I know where I'm at.
Scooter boy
For the Guys on here that run big chairs:
What is your view on the usefulness of a chair wheel brake? The only time I've managed to have a chat with a team at a full size meeting they were of the opinion that it was a waste of time and was only there to cover the regs. Tamzine who's family are well known in big sidecars always ran a chair brake which makes me wonder as it contradicts what the other guys said. Also what sort of level of bias is common?
On big chairs how do you view the chair wheel in terms of tyre compound and pressure? On our rigs we run a hard tyre compound @ around 50 PSI, let it down to the same as the other two and it adds a second or two to a 1 minute lap time! Same on big stuff??????
Ta
Chair wheel brake is important on ours for sure. If for nothing else but to set the slides up nicely into right handers.
Chair wheel gets the cast offs from the front. We run it between 15 and 19 psi depending on temp and track direction.
There's a cheat that people talk about, where you put suspension on the chair wheel, and a tie rod mounted on a downward angle. Suspension compresses, chair wheel tows in. Sidecar actually fucken turns right at last.
In the riders seat
Most people put any old rubbish on the side, at World Champ level they used to have a few different compounds and on right hand tracks considered it quite important to get it right
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."
Who You Calling a Pig
Shit I dont know much about kart wheels. But that pressure sounds ridiculously high.
For the record Qkkid was in my bed, not the other way round
Unknown Disorder
Kart wheels we run about 25 and that seems high on a cold day
Stock is best
Scooter boy
Thanks very useful indeed. We run 25 - 30 psi in front and rear but 50 ish on the chair with a hard as nails old tyre I've even run 60 on the chair which is the limit for the recommended operation written on the tyre. we once accidentally put 100psi in a front getting it to pop onto the beadso I know 50 isnt going to be dangerous. karters are running them @ 8PSI.
Been told to adjust it forward with a touch of tow in) for twisty tracks and to the rear for bigger track with long straights. Which seems to be fair comment and kinda goes hand in hand with what Kickaha is saying. So basically it seems a good philosophy to get it as far out of the equation as pos unless you're chucking into a right hander.
Liking what Drew is saying about it helping set up the slide in rights. digging the front in to instigate a flick to the right and getting the rear sliding seems to work best for us and up until now it's all been on the front brake alone so good times ahead
still got to do some more pics......
Scooter boy
I'm having a mare trying to get sodding links from online storage to here via my phone and cant find many showing anything more than the ones I've already put up so bare with.........
On a side note here's something else thats just turned up, GRC (Italy) make very good minimoto's but not sure if this is made by them or just has their stickers on it. GRC have shared it on FB though.
I know nothing about it at this stage.
Who You Calling a Pig
looks nice. Would be nice to see it with is clothes off.
Google translated the opening album comments as
After a strenuous work in the company of some crazy (like me) have completed the mini sidecar.
Hardcore Biker
I would agree with Pumba 50 psi seems a bit high. I know with my old gearbox kart running Dunlops or Bridgestones would run 15psi front and between 18-20 rear anything more and it would tend to make back end hop.
I think i got Brenton to run 15 psi in the front of his sidecar and 20 at rear but would have to check that with him. Over inflate a kart tyre and you loose grip real quickly , especially old compound ones.
Weekend cruiser
Our way of setting pressure is to push on Rick and Henks rubber and get the same finger pressure to match, if it works for them it should work for us... I think we have gone really low a couple times, wouldn't mind betting we have gone close to single figures when I have no stick and am getting desperate. Thinkng about it I should have gone lower last weekend, the MG Red we had on the front just wasn't sticking like the old Vega's we had on before. We also run our chair wheel hard, 30-40 psi, haven't tried adjusting it, mind you maybe we could have a play and see if it makes any difference.
In the riders seat
RSR junior sidecar http://www.rsr-sidecar.de/junior/index.php
Running a 250 Superkart I didn't run more then 12 front 14-16 rear, sidecar and two fat bastards would weigh a bit more though
We'd normally run 12psi in the side on the F1 and the only time I run a higher pressure in the side is if I want it to slide more as I turn into rights
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough power."
Who You Calling a Pig
Yep fair call, same body work.
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