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Scotty T · Joined: 18 Nov 2008 Posts: 878 Location: Canberra

My current wheelbase on my slalom deck is 17.7 inches. I want to know what people are running for tight slalom. My board feels too twitchy after fitting a DA BEAR (TM) modified Tracker, I had previously set the wheelbase to the 17.68 for tight slalom with my stock Tracker and could just get through tight cones but with the new truck it was easy so I think I need to stretch out again.

My holes allow me to go forward to 19.3 or backward to 20.4. Going backward would put the back truck on the kicktail which I think would give maximum drive. I've ridden Paul CROSS's board which is a carbon fibre thing and the back trcuk right at the back lets you really pump some speed. At a whole inch longer than going forward it might be too long but I have no idea. Among the fast guys at CHC4 in Canberra this year, my only slalom race, I was some very long looking boards with a big wheelbase.

What's the go? I think I will pull it back now and ride it tomorrow on some tight cones Smile

Still keen to hear what people run though Question

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Cozmick Avenger · Posted: Thu Dec 17, 2009 6:37 pm Post subject:

Lots of variables to consider but generally the longer the wheelbase you can aggressively slot through the cones, the faster you'll probably be going, which is the essence of the wiggle scene.
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DA BEAR · Joined: 22 Nov 2007 Posts: 283 Location: FAIRFIELD,VIC

Hi Scotty,
Well heres my bit,

............................T/S Airflow foxy pro "Ramon".......Hyb - Axe Skully
same front foot stop............Y.............................................Y
rear on kick........................Y.............................................Y
tail behind rear bolts.........2 1/2......................................3 1/4
inner/inner..............19 or 19 1/4(use19 1/4).............20 or 21(use21)
front trucks..................mod RTX 106.........................mod RTX 106
rear truck.............RTS 106 soon to be a skandal 125........airflow at 126

Both great setups (i like them),
with the ramon i can turn circles inside the skully which is good but
slows me down cause i naturally ride wide, (even wider on this setup),
which loses speed and time.
Getting a skandal for xmas to try a wider track and and less steer in
the rear. Feedback later.

Skully even tho its only 1 3/4 longer w/b, makes me work heaps more,
workin harder with less steer i ride heaps straighter ergo faster.
Finally learnt to pump along on the skully now just have to get the
timing of the pump and cones together. Stromlo watchout!
The faster i go the less reaction time then i i i i'm bhind shld hav push
dd
nt puld wrng con e ooofffff seettt s.................
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Truck mods done for,
12inch, Brady, Bernie, Hambo, Hamish, Ludi, ScottyT, Scuppers and Me.

Scotty T · Joined: 18 Nov 2008 Posts: 878 Location: Canberra

Thanks fellas, I'm gonna run it out to the 20.4 and see what gives. Haven't had a chance to change the w/b yet but going to do some cones tomorrow morning.
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haggy · Joined: 14 Oct 2005 Posts: 727 Location: sydney

Coz is pretty spot on, the general rule I find is that the longer wheelbase you can get through a course the faster it will be. The idea being you get more power out of your pump on a longer wheelbase (longer arcing turn) at a higher speed. There are exceptions of course but I think you will find you can ride a longer wheelbase for most stuff. A 17.7 wb is super small, I think the smallest I have ever ridden is 18.5 in.

My generic hybrid setup I think is 20.5 inch. Lately I have been riding 21.5 in but i am trending back to 20.5-21 I think. On a GS setup you can ride even bigger.

DA BEAR · Joined: 22 Nov 2007 Posts: 283 Location: FAIRFIELD,VIC

Replaced my tracker RTS with the xmas skandal yesterday,
quick roll round the backyard and thought this feels odd.
Then i realised what had happend to the wheelbase.
The skandal had shortend the wheelbase by app 1 1/2 inch.

With the kingpin at app 85 deg.
RTS.......axel app 22mm behind the front bolt holes,
Airflow...axel app 15mm behind the front bolt holes,
Skandal axel app 10mm INFRONT of the front bolt holes.

So i've redrilled, moved the baseplate back the 1 1/2 inch'
for the same wheelbase.
Testing still in progress.
_________________
Get on a winning truck, Call me, call me now!
Truck mods done for,
12inch, Brady, Bernie, Hambo, Hamish, Ludi, ScottyT, Scuppers and Me.

Scotty T · Joined: 18 Nov 2008 Posts: 878 Location: Canberra

Wheelbase lengthened to 20.4, bearings cleaned and oiled, and added bearing spacers. Ready for a roll tomorrow.
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Bugs · Posted: Wed Dec 30, 2009 11:03 pm Post subject:

Scotty T · Joined: 18 Nov 2008 Posts: 878 Location: Canberra

It's going sick at 20.4, so much power from the back end, a bit more tuning and it will be just right Smile

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MARK WINFER · Joined: 14 Jan 2007 Posts: 935 Location: grantville vic

Just switched an Airflow for a GOG which added 1/2 an inch to wheeel base giving me 20.5 also.
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Scuppers · Joined: 12 Dec 2007 Posts: 109

Hey guys..

how do you measure wheel base?

is it the actual gap between the wheels...or centre front axle to centre rear axle...or distance between two inner predrilled truck holes??

if you guys are tinkering around with wheel base for CHC2010..I'm getting on the band wagon so I dont get left in the dust ..cheers

MARK WINFER · Joined: 14 Jan 2007 Posts: 935 Location: grantville vic

Axle to axle I beleive Scuppers, lookin at stretching mine a bit more.
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all74 · Joined: 20 Jun 2007 Posts: 12 Location: the 'bowl

how do you measure wheel base?

is it the actual gap between the wheels...or centre front axle to centre rear axle...or distance between two inner predrilled truck holes??

Often I think people talk about inner hole to inner hole when the say "wheelbase" I guess because its a universal way of comparing boards before the trucks go on, if for example your comparing new boards.

Once the trucks go on of course the "true" wheel base could vary alot.

Mark (Marek)
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martykent · Joined: 06 Aug 2006 Posts: 680

wheel base on bowl boards is between the front truck centre of the rear bolts and rear truck front bolts centre thats the way i see it dont think it is any different on slalom boards. if it is incorrect please inlighten me.cheers marty.

DA BEAR · Joined: 22 Nov 2007 Posts: 283 Location: FAIRFIELD,VIC

Inner hole to inner hole is a starting ref point, but when you start
trying diff rear trucks, like this,

RTS.......axel app 22mm behind the front bolt holes,
Airflow...axel app 15mm behind the front bolt holes,
Skandal axel app 10mm INFRONT of the front bolt holes.

Things change a fair freakin bit,
so axel to axel's more accurate.
_________________
Get on a winning truck, Call me, call me now!
Truck mods done for,
12inch, Brady, Bernie, Hambo, Hamish, Ludi, ScottyT, Scuppers and Me.