does anyone on here pin their axles like harold wiggins
shows on his videos and how do most of you do your axles

We pin ours. But have ran lock collars as well. Like to pin them though.

I pin the LR and use collars on the RR and I recommend to all with whom I work to do the same.

Todd
www.dynamicsofspeed.com

when you pin the axle do you take the set screws out or leave them in
i just pinned both karts on the lr and lock collared the rr i took all the set screws out ; is that the way to do it

i agree

i drill and tap the axle and run 1/4-28 bolt thru bearing and axle on LR

thats the way i did it the bolt thru the bearing and axle do you take out the set screws and leave them out also

yes the pin is now the set screw ......todd why not just pin them both and not use collars i have yet to see a pin break?

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chris horton
CAHOON MOTORSPORTS,UP FRONT AT A TRACK NEAR YOU

the collars allow the frame to flex

If you pin both sides then they are forever fixed - you can't let anything slide to find "balance" should it be necessary.

Todd
www.dynamicsofspeed.com

we run lock collars on the right side only,one on each side of the bearing hanger,lets it flex better.and if u get in a bad enough wreck it moves some and doesnt bend axles or tear much up.if u bend the axle that has been pinned its hard to get bearings off the axle.just seen that happen in kids class a week a go.pc

like todd said that could be used for an adjustment,like collar them for flex when u need it to or pinned it to make less flex or more ridged.pc

todd,when should that back tyrod,or whats the name im getting at here called.be tightened up.or leave it loose all the time.the one behind the seat on the frame.name that to please.not much talk about what that thing actually does.pc

it should be somewhat loose, it is there for support of the left side rail, thats it

We call them toe links and XXX has it: it's there to provide lateral support for the LR. It's not an adjustment and it doesn't really affect the kart until you back it in the fence and then it's nice to have.

Todd
www.dynamicsofspeed.com

Lock the left side only, the brake side... you do not want flex or load to push the rotor into a pad scrubbing speed.

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I pin the right side and leave the left floating.

Todd, Do you keep the collars tight to both sides of the bearing or leave acouple of thousands clearance?

I leave a few thousandths.

Todd
www.dynamicsofspeed.com

I have tested pinning/locking collars of the LR vs RR and both and have had other respond to the testing the collars with the same results. Couple years I used this as a tunning tool on dirt and pavement.

You can use a bolt or 2 lock collars to lock the bearing to the axle, often the bolt allows clearence on the LR screw jacker to move up and down correctly, just depends on application. They both do the same thing.

Usually you wanna lock the LR and use the RR as a tunning tool, by adding collars to the RR you apply more transfered pressure to the RR tire adding grip to the tire.

Adding grip to the RR tire is good for spec tire racing when the spec tire is a non prep brick, qualifying or on a dry slick track with alot of restarts, anytrack that ends up with long runs I don't like to use the collars on the RR.

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In racing most guys lose site of logic and look for magic

Are you saying by having the RR locked over long runs, you may end up overworking the RR and it will give up on you in time?

If you were to only lock the LR in place, only the left rail would flex laterally right? And vice versa? Joe

I know for sure that my karts RR would never endup giving up, maybe get tighter then my driver would like.

When the RR is not using lock collars the axle moves more in and out inside the bearing and relieves pressures applied.

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In racing most guys lose site of logic and look for magic

The back end of a kart moves quite a lot when it loads up in the corner. When only one side is locked it will move all the more. When it's the LR that's locked you'll get misalignment on the order of 1/2" or more. Additionally, it is farily common for kart that can slide the RR bearing around on the axle to not plant the RR optimally getting in. Many won't notice this but it hurts speed.

Todd
www.dynamicsofspeed.com

Lock collars on the LR and axle sleeve spacers between the RR hub and bearing seem to work keeping everything where it should be.

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So, using collars on the RR can be effective in freeing up the RR as opposed to pinning it? As long as the collars are set to have a bit of clearance off the bearing. Is this what I'm reading?But its still a balance game because a loose condition can come from an underloaded RR as well as an overloaded one?

Pinning and collars have the same effect, leaving space with the lock collars takes away the reason your using them.

Were not talking about a loose condition were talking about loading, there is less loading when you don't "tie in" the RR bearing.

I have had chassis that I have setup in many ways and could not get them freeied up turning in with too much RR bite, especially the buggies, took the collars off the RR and night and day differences.
If the kart is tight going in were giving up speed if you can't put it where you want it to pass.

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In racing most guys lose site of logic and look for magic

so what would you do for a flat kart with a cage on it (which the cage attaches with hiems and slides in and out of it self on the back) and uses a micro wing? lock collar the lr and leave the rr alone or what? a common problem with these is they hop very bad sometimes depending on track, tires, and setup. the high hp from the open engines doenst help either.

looking for a good base to start with the collars. i am used to pinning the lr and putting collars on the rr with maybe a 1/16" off the bearing for space.

The bounce is from a over loaded RR and the stiff cage.

More left eliminates the bounce and add more cross 55% and only lock the LR down.

Thin wall axle, harder tires eliminate the bounce.

Roll casters ahead more air pressure.


Space in a lock collar is worthless sorta like half way turning on the light switch LOL

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In racing most guys lose site of logic and look for magic

Is it possible to tell me where to find this in pictures?

describe the pictures you seek? we covers a few areas in this post I dont know what pictures you see.

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In racing most guys lose site of logic and look for magic