Andrew Posted January 7, 2009 Share Posted January 7, 2009 can anyone remember what the effect of lifting the seat height was ? pretty sure someone commented sometime in the last 113 pages mine has dragged along the floor for so long its got a gaping hole and me of me hoggers is starting to wear thin It has the effect of not wearing a hole in your hoggers! Funnily enough. I've done the same to Pete's kart this aft, as his was dragging on the deck too.. Quote Link to comment Share on other sites More sharing options...
Andrew Posted January 7, 2009 Share Posted January 7, 2009 QUOTE Round patchy brown solid one fitted to mine Scott, I'd make sure Swiss / Log ltd hasn't fitted a wooden axle! Quote Link to comment Share on other sites More sharing options...
boblog Posted January 7, 2009 Share Posted January 7, 2009 Jeff, the effect of lifting the seat is to get your body weight up higher to enable you to lift rear wheel easier. Yes Scott will put the sprocket in. Yes captain, Swiss Log Inc are in the final stages of development of it's "new" wooden wittled axle Quote Link to comment Share on other sites More sharing options...
OILER Posted January 7, 2009 Share Posted January 7, 2009 can anyone remember what the effect of lifting the seat height was ? pretty sure someone commented sometime in the last 113 pages mine has dragged along the floor for so long its got a gaping hole and me of me hoggers is starting to wear thin I,m sure project one told me lifting the seat will give more grip but logic says it will put more load on the outside wheels and unload the inside ones easier, but i know nowt anyway cos i'm a valeter according to swiss Quote Link to comment Share on other sites More sharing options...
JeffC Posted January 7, 2009 Author Share Posted January 7, 2009 found this whilst I was trying to work out why my kart was understeering Adjustment Specifics Handling Effect Front Track Width Wide A wide front track will add grip to the front end. It will also help the kart rotate in the corner due to the "jacking effect" which occurs when the wheels are turned into a corner. This concept can be seen easily when the kart is on the stand, by turning the steering wheel, you can watch as the inside tire goes down and the outside goes up, the "weight jacking" allows the inside rear wheel to lift up much easier, allowing the kart to rotate as it is powered by the outside rear tire. The wider the front track, the more pronounced (the "jacking effect") Narrow A narrow front track width will result in less scrub, providing better turning up front. A loss of the "jacking effect" is the trade-off. While the front will track around the corner better by getting more grip, without the lifting of the inside rear wheel, the kart will not rotate in the corner. Front Ride Height High Frame To raise the chassis, lower the spindle in its carrier by moving the washers from the bottom to the top. By raising the front ride height, you effectively raise the center of gravity in the kart and will be increasing the side bite on the tire, making it grip harder. If you go too high however, the raised CG will make the kart "bicycle" or pick up its inside wheels. Low Frame To lower the chassis, raise the spindle in its carrier by moving the washers from the top to the bottom. By lowering the front ride height, you will take side bite away from the tires and allow them to slide instead of grip. This will decrease the grip in the front-end. Front End Alignment Toe-Out Toe-out is recommended for sprint track applications. It helps the kart on turn-in although it will make the kart wander slightly on high-speed straight-aways. Zero Zero toe can be used on road race tracks in an effort to gain top end speed. Tire Pressure Higher Increasing tire pressure will help the tire build heat quicker, providing increased grip in fewer laps. Too much pressure will heat the tire too quickly and result in excessive tire wear in a short number of laps. Finding the middle ground between heat/grip and tire wear is the key. Try to get the pressures so that they will increase no more than 2-3 lb. during a session. Lower Lower tire pressure will not allow the tire to come up to temperature as quickly and will likely result in a loose condition until the tires heat up and begin to grip. Caster Positive Caster is normally adjusted using an offset adjustment pill at the top of the spindle carrier. The spindle can be tipped forward or back simply by turning the adjustment pill. To add or to put caster into the chassis, turn the pill so that the offset hole is towards the back of the kart, leaning the spindle back. This will give you more front grip. Negative Taking caster out of the chassis is accomplished by turning the adjustment pill so that the offset hole is pointing forward. This will stand the spindle up and will take grip out of the front end. Many teams take caster out of the chassis during qualifying, when the kart has fresh tires and does not need to fight for front grip. Torsion Bars Assorted Torsion bars are essentially removable frame rails that are clamped to the chassis to control the amount of flex that a chassis has. By removing these bars, you can make the chassis stiffer or softer depending on the conditions. Seat Struts Assorted Seat struts are bars mounted from the sides of the seat to the bearing hangers. They take advantage of the largest mass in the kart— the driver— utilizing this weight, transferring it straight to the rear tire, planting it hard. This will give you more grip. Axle Soft A soft axle will flex more under load, absorbing the energy transferred during cornering, taking away from the tires. This absorption will not make the tires grip as hard and will therefore take grip out of the rear. Hard A hard axle will not flex like the soft axle, forcing the energy to the tires, which will make them work harder and provide more grip in the rear of the kart. Hubs Long Different lengths of hubs affect chassis handling in a similar fashion to the different flex rates of an axle. The assorted lengths of hubs will control the flex of the axle. Therefore, long hubs will make the axle stiffer on the segment of the axle outside of the bearing hangers. This will make the tire bite and will result in increased rear grip, similar to a stiff axle. Medium/Sort Medium and short hubs will work conversely to the long hubs. The shorter the hubs the more the axle will flex. Increased axle flex means increased energy absorption which will allow the tires to slide. By going to small hubs you will decrease the amount of rear grip. Rear Track Width Wide When discussing grip in relation to track width, there are boundaries when going too far which can cause the kart to become loose. Within limits, a wider rear track will be more stable and will provide more grip. Narrow A narrow rear track will be less stable at speed and will give the chassis less rear grip. Troubleshooting Entry Push, Kart goes straight when wheel is turned Too much rear bite Softer rear axle Shorter rear hubs Lower rear ride-height Not enough front end bite Widen front end. Add caster. Raise front ride-height. Move seat forward. Exit push, The kart will not turn on exiting Kart not rotating. Soften rear axle. Sorter rear hubs. Lower rear ride-height No jacking effect. Widen front end. Add caster. Loose on entry, Rear slides out on entry of a turn Too much front end bite Lower front ride-height Narrow front end. Take out caster. Move seat back. Not enough rear bite Stiffer rear axle. Longer rear hubs. Increase rear ride height. Add seat struts. Brake bias problem Dial in more rear brake (if not locking rear brakes) Dial in more front brake (in not locking up rear on entry) Loose on exit, rear end kicks out on exit of a turn Not enough rear bite Widen rear track width. Stiffer rear axle. Longer rear hubs. Add seat struts. Quote Link to comment Share on other sites More sharing options...
JeffC Posted January 8, 2009 Author Share Posted January 8, 2009 think may be warden Law on Sunday to get some practise for race the weekend after Quote Link to comment Share on other sites More sharing options...
Pilot Pete Posted January 8, 2009 Share Posted January 8, 2009 think may be warden Law on Sunday to get some practise for race the weekend after ooo aye, race weekend ey? Is it one that requires a license? Havent sent off for mine yet, doing it this week. Quote Link to comment Share on other sites More sharing options...
Andrew Posted January 8, 2009 Share Posted January 8, 2009 think may be warden Law on Sunday to get some practise for race the weekend after So, from your last Warden law experience, you need to leave the slicks at home, and take lots and lots of wets! Quote Link to comment Share on other sites More sharing options...
JeffC Posted January 8, 2009 Author Share Posted January 8, 2009 think may be warden Law on Sunday to get some practise for race the weekend after ooo aye, race weekend ey? Is it one that requires a license? Havent sent off for mine yet, doing it this week. no its non msa are you applying for your msa licenec? the national race b ? im on with mine and bit confused noticed there is a box for kart racing but its unclear if you are automatically covered to race karts with the nat race b ? Harv posted before that it does and looking at it if you tick the kart box it costs you more what have you done ps if you or the cap is passing Ive got your slicks/ replacement spare chain here along with a bill from my courrier for some Honda wheels Quote Link to comment Share on other sites More sharing options...
JeffC Posted January 8, 2009 Author Share Posted January 8, 2009 think may be warden Law on Sunday to get some practise for race the weekend after So, from your last Warden law experience, you need to leave the slicks at home, and take lots and lots of wets! reading on the kart forum about Prokarts being 7 secs a lap in the wet quicker than a wf at WardenLaw which sounds about right bearing in mind how quick they lapt me if its raining I wont be racing up sidedry lap record in Wf is 57.4 sesc and prokart is 59 Quote Link to comment Share on other sites More sharing options...
Pilot Pete Posted January 8, 2009 Share Posted January 8, 2009 think may be warden Law on Sunday to get some practise for race the weekend after So, from your last Warden law experience, you need to leave the slicks at home, and take lots and lots of wets! reading on the kart forum about Prokarts being 7 secs a lap in the wet quicker than a wf at WardenLaw which sounds about right bearing in mind how quick they lapt me if its raining I wont be racing up sidedry lap record in Wf is 57.4 sesc and prokart is 59 Well we have no chance of beating either of them matey! Quote Link to comment Share on other sites More sharing options...
JeffC Posted January 8, 2009 Author Share Posted January 8, 2009 just been watching some of Petes early videos, I remember when things were this close between myself and the Pilot fingers crossed they will be again and check out how slow the kiddies are Quote Link to comment Share on other sites More sharing options...
Andrew Posted January 8, 2009 Share Posted January 8, 2009 QUOTE ps if you or the cap is passing Ive got your slicks/ replacement spare chain here along with a bill from my courrier for some Honda wheels Might pop by tomorrow sometime, OK if I swap a battery for one with some volts in it? Quote Link to comment Share on other sites More sharing options...
Pilot Pete Posted January 8, 2009 Share Posted January 8, 2009 just been watching some of Petes early videos, I remember when things were this close between myself and the Pilot fingers crossed they will be again Were they the good old days! Got nothing on my license application for karts by the looks of things. Obviously not good enough! I'd be up for warden law, but saturday would be much better at the moment looking at the wevar! Need to make sure Ross is there as well as I'll have me weight on this time so could be a well good ding dong! Quote Link to comment Share on other sites More sharing options...
JeffC Posted January 8, 2009 Author Share Posted January 8, 2009 dont think they do Practie Saturday Pierre Quote Link to comment Share on other sites More sharing options...
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