nine inch drum spindles?

[gregsdart]

How much can they take? I made the mistake of ordering a brake kit from wilwood to use them on my 65 Dart street car, and now am faced with a rather expensive parts bill for different hubs and brackets if I want to go to the bigger ten inch spindles. Also, do the two different spindles use the same lower ball joints?

 

[396 Signet]

The 10" spindles are a lot stronger but if you're just putzing around on the street I wouldn't worry about it. Worst case you bend them then you'll be forced to change but unlikely they would break off. Lower ball joints are the same.

 

[whitepunkonnitro]

Unless you plan on running the Baha 1000....twice, they'll be just fine

 

[66Dvert]

How much can they take? I made the mistake of ordering a brake kit from wilwood to use them on my 65 Dart street car, and now am faced with a rather expensive parts bill for different hubs and brackets if I want to go to the bigger ten inch spindles. Also, do the two different spindles use the same lower ball joints?

the only time I damaged a 9" spindle was when I smacked a curb in the snow doing donuts (hey I was 16) and it only broke one of the lower ball joint bolts. replaced it with grade 8 bolts and drove the crap out of it for another 100k.

 

[Marcohotrod]

doing wheelies and 153mph, the 9" spindle to lower ball joint assembly has smaller diameter bolts. maybe have the spindles + new grade 8 bolts magnafluxed or zyglo tested for cracks

 

[AJ/FormS]

I had a wheel fall/tear off, just putzing around a turn in 76 or so. The spindle broke right behind the outer wheel bearing. I had another one where the outer bearing spun on the spindle and destroyed it.Those bearings are very small. Back in the day I heard, thats heard only, that is was a common concern.I've only had 2 As with 9 inchers, and both had problems. So........
Personally I would not use them.No matter what the application was.
I've had several other A's; with 10 inchers,or with the KH set-ups. No issues.
The 73 up spindles have the biggest bearings IIRC.

 

[gregsdart]

This set is for a street car, but it will eventually get a 402 cube Gen 3 Hemi. Thanks for the posts, I can sleep a little better!

 

[jos51700]

The spindles are fine. It's the chintzy BOLTS, loaded in shear, that are known to snap at inopportune times!

 

[AJ/FormS]

So, keep us posted as to the successful use of those 9 inch spindles.
BTW if you have'nt yet switched to a dual braking system, now would be a good time. When my spindle broke, the wheel kinda took off.It happened going around a corner,in morning rush-hour traffic and was the inside wheel. I was already on the brakes, so when the pedal dropped on my 69, I still had rear brakes. It didnt matter much,cuz the corner dropped to the pavement, and I had Flinstone brakes! Believe it or not, the little slanty had enough power to push that dragging corner up an incline onto a parking lot that just happened to be right there.Then I went back and grabbed the wheel out of the traffic.And then I called my boss and told him I'd be late. And then I called a towtruck. And then I called my wife. And then I called a cab.

 

[BillGrissom]

The 9" spindle's outer bearing is a bit small (A-1, I recall). Both sides spun the race in my 69 Dart. 10" spindles use A-2 I recall. Get a quality bearing (made in Germany) and probably won't have any problems. One concept is get the biggest of everything, but then your car weighs too much. Race cars go the other way and figure some part will break sometimes, but you will win other times. Watch how fast an Indy car loses a whole wheel assembly after the slightest mishap.

 

[gregsdart]

I have a dual master cylinder, and discs on all corners. The 7/8 bore dual works great, plenty of leverage, if you don't mind a bit more pedal travel when braking. Due to the cost of switching, (Wilwood parts needed, about $400) I am going to stick with them for the time being. Thanks all.