Any New Opinions on 25 mm Spindles ?

Jeff Stamper

I did a search and found a post on 25 mm spindles. Its rather old and I was wondering if anyone can share any opinions on what they think of the difference between the two ? Thanks for any help ! I am trying to decide which ones to put on my new kart.
_________________
Racing is a State of Mind ! ... A very nice state to be in !

Walt Gifford · Posted: Tue Dec 07, 2010 9:25 am Post subject:

The front end has to have some flexibility. If you have a very stiff chassis with a KT100 can motor I'd think twice. If you have a 30mm frame with no front torsion bar I'd go for 25mm.

Gif Cool

_________________
FAA certified jet engine and aircraft technician
Nicholson Speedway class champion 2001
Yamaha KT100 Service Center
40 years karting experience

Chris Livengood · Posted: Tue Dec 07, 2010 10:11 am Post subject:

I think they are a lot like the 17mm spindles, just 7mm larger. I'm not being cheeky.
_________________
http://www.Chrislivengood.net
http://www.Work-Racing.com
http://www.OurZeal.com
http://www.Karting101.com
"Auto racing, helping white guys get laid since 1887!!!"

Jeff Stamper · Posted: Tue Dec 07, 2010 10:15 am Post subject:

Walt, I have a 28 mm chassis that is very flexible with a KT or a KPV. Think its worth it ?
_________________
Racing is a State of Mind ! ... A very nice state to be in !

Chris Brunnemer

Jeff Stamper · Posted: Tue Dec 07, 2010 12:30 pm Post subject:

Thats sort of why I posted this ! I am not sure either. I can get them on the new kart, so I figure if nothing else, they may be stronger !
_________________
Racing is a State of Mind ! ... A very nice state to be in !

Dan Haynes · Posted: Tue Dec 07, 2010 2:44 pm Post subject:

Tom Sekey · Posted: Tue Dec 07, 2010 3:29 pm Post subject:

Ran both on our PCR. If the track had low grip the 17's were faster. If the track had medium + grip the 25's were faster. 17's flex 25's don't.

Tim Koyen · Advertiser Joined: 26 Nov 2002 Posts: 1571

I like them on the Tag and in the rain, as it allows the front to be both wider and stiffer. I don't really see the necessity in Yamaha or KPV.
_________________
High Quality American Made kart stands. Available direct to you or through one of our many dealers.
www.kartlift.com
Toll Free: 877-777-8020 or 608-235-4761 anytime
www.facebook.com/kartlift

Chris Livengood · Posted: Tue Dec 07, 2010 4:38 pm Post subject:

Mike Goebel · Posted: Tue Dec 07, 2010 5:43 pm Post subject:

Mike Goebel · Posted: Tue Dec 07, 2010 5:45 pm Post subject:

Jeff Stamper · Posted: Tue Dec 07, 2010 5:46 pm Post subject:

Mike Goebel · Posted: Tue Dec 07, 2010 6:09 pm Post subject:

Run the 25mm guys they won't bend as easy.

Just for fun we get the following deflections. I may be wrong but at least I'm drunk Laughing

17mm approx .004 in
25mm approx .0002 in

at a load of 200 lb and a distance of 7in from kinpin to center of wheel.

Mike G.
_________________
Closet KZ Lover!!!
mfg Technology Centre
So Cal’s #1 Non Profit Engine Builder

Dan Haynes · Posted: Tue Dec 07, 2010 6:17 pm Post subject:

we got 17's on the X1 when we bought it. i ordered the 25's but they didn't come in until after our last race so we haven't had a chance to try them yet. but i've been told by several X1 drivers that you need the 25's in TaG.

EDIT-let me add that the times that we ran it with the 17's it had a very bad push the whole way through the turn. we couldn't tune it out no matter what we tried but we had older YKCs and not the greatest track conditions.
_________________
Blaise Haynes
#3 Arrow X1-CIK
TaG
Cook Racing Engines Parilla Leopard