Rear Hubs - How much do you like to cover the axle?

Chassis Setup, Tires & Handling Forum
1

Just curious to see people’s opinions on how much they would risk running the hubs out?

I personally like to make sure the axle goes into my hub at least 50mm. I use axle spacers so I can calculate this easy enough.

Would you run your hubs with less than 50mm of an axle within the hub?

2

You can go a lot less. The hubs I like are only 35mm wide:

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3

As long as my pinch bolt in on the axle… Send.

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4

What category?

I run KZ, so I prefer some meat on the hub. Maybe I’m too cautious

5

I don’t suspect you’ll have a real-world scenario in KZ where you’d have any issues.

Even if running a short axle (1000mm), standard hub (90mm), high-backspacing wheel (Freeline DF), and MAX rear width (1400mm), that would still leave you with 30mm of axle inside the hub.

Generally in KZ you’ll be running a 1040 axle, or maaaybe a 1020, so that gives you plenty of meat left inside the hub.

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6

A few people in my class (X30) have cut down axles (1000mm), mine is 1040mm. What do shorter axles actually achieve?

7

There’s some good info already out there if you search the forums. I’ve had good results with cut axles in X30, for certain conditions.

8

Thanks, I’m just charting up my measurements with spacers and hub combinations. So on race day it saves me measuring. Quick changes.

I was a little cautious, I’ll think I’ll keep a min of 40mm now. That covers all my possible scenarios really.

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