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R/C Tech Forums Thread Wiki: Official Team Associated RC10 B5m Mid-Motor Thread
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Old 03-05-2015, 10:27 AM   #12181
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If I understand correctly, using the +4mm C arm mount with 5mm hexes will result in each inner hinge pin being 2mm further out, but the track width remains the same.

So... by moving the inner hinge pin out, are you raising or lowering the roll center?
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Old 03-05-2015, 10:29 AM   #12182
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Originally Posted by raceguy13 View Post
has anyone installed the +4 c mount and 5mm hexxes? I just installed mine and the hex isn't even close to clamping the axle. I tightened the screw all the way in the hex and it just slides on and off the axle, it is super sloppy on the axle.
They say they only work with the HD axles, but not sure what the difference is between the HD and regular axles. Maybe the HD are just thread further so the wheel nut can be screwed on farther with the slimmer hexes?

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Originally Posted by JDM_DOHC_SiR View Post
The new 5mm hex is designed for the new HD axle that is about .3mm thicker than the standard B5/B5M axle
Are you sure?

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Originally Posted by Wildcat1971 View Post
Probably a good upgrade for stock class.

Wonder how these are able to work with both the 5mm and 7mm hexes?
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Old 03-05-2015, 10:43 AM   #12183
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Originally Posted by Jordan Anderson View Post
They say they only work with the HD axles, but not sure what the difference is between the HD and regular axles. Maybe the HD are just thread further so the wheel nut can be screwed on farther with the slimmer hexes?



Are you sure?



Probably a good upgrade for stock class.

Wonder how these are able to work with both the 5mm and 7mm hexes?
Too rich for my blood. But then again my B5M is mod only. Have a B5 for stock. Out of the box lightness.... How would these things even hold up in the event of a punt, or direct hit to the axle?
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Old 03-05-2015, 10:58 AM   #12184
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Originally Posted by Jordan Anderson View Post
If I understand correctly, using the +4mm C arm mount with 5mm hexes will result in each inner hinge pin being 2mm further out, but the track width remains the same.

So... by moving the inner hinge pin out, are you raising or lowering the roll center?
This change lowers the rear roll center.
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Old 03-05-2015, 11:01 AM   #12185
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I've had them for two months, and couldn't be happier with them.
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Old 03-05-2015, 11:01 AM   #12186
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Originally Posted by jpcopeland1 View Post
Too rich for my blood. But then again my B5M is mod only. Have a B5 for stock. Out of the box lightness.... How would these things even hold up in the event of a punt, or direct hit to the axle?
local have been racing with these axles for a couple months. no issues. As far as the hexes go, you CAN NOT use the new hexes designed for the HD axles. For now most everyone has the old axles, but in 6 months if that changes, amain plans to update the Ti axles to the HD diameters. If you want to use the +5mm hex width, you can use the current front hex on the rear.
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Old 03-05-2015, 11:02 AM   #12187
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I've had them for two months, and couldn't be happier with them.
dude, you buy everything, Rich people make me sick , lol. I guess compared to motor cross this is cheap for you, huh
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Old 03-05-2015, 11:16 AM   #12188
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So does the HD axle use a different bearing? I don't see how the axle could have a bigger diameter to make the hex tight while still using the stock bearing.
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Old 03-05-2015, 11:22 AM   #12189
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Originally Posted by raceguy13 View Post
So does the HD axle use a different bearing? I don't see how the axle could have a bigger diameter to make the hex tight while still using the stock bearing.
Why not call AE and ask? Don is a super nice guy, and if he knows, he'll tell you. I would assume they're the same, though.
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Old 03-05-2015, 11:58 AM   #12190
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Originally Posted by raceguy13 View Post
So does the HD axle use a different bearing? I don't see how the axle could have a bigger diameter to make the hex tight while still using the stock bearing.
The bearing diameter is already larger than the portion the hex clamps to. So they have room to increase the diameter of only the part the hex clamps to, without changing bearings. Just look at the link Wildcat posted to the titanium axles. You can clearly see the part of the axle the bearings sit on is a larger diameter than the hex portion.
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Old 03-05-2015, 12:39 PM   #12191
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Default Stock only?

With the kit being designed "to excel in classes requiring spec motors and for certain track conditions that allow the racer to take full advantage of the performance offered from reduced weight" make this not a good choice for 13.5 and lower turn motors?

Would you need to add weight (basically negated the advantages of the kit) to make it handle well in modified? I don't see the sense of buying a lightened kit and then adding weight.

I would run it at a high grip indoors (slicks) and large outdoor (1/8th style track, not sure of tire).
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Old 03-05-2015, 12:45 PM   #12192
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Originally Posted by Wildcat1971 View Post
If you want to use the +5mm hex width, you can use the current front hex on the rear.
I believe you need to add 1mm per side if you use the front hexes....at least thats what I came up with when I measured my JC hexes.
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Old 03-05-2015, 12:46 PM   #12193
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Originally Posted by air8 View Post
Hard to get the angle with my phone. But there is less than a 2mm gap. But the battery is crazy loose in there. It slides forward easy. I guess with my layout I could just stuff foam in there.


DOH! I misunderstood. I thought they were bowing. Just put a piece of foam to the underside of the hold down
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Old 03-05-2015, 12:47 PM   #12194
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Originally Posted by sneako View Post
With the kit being designed "to excel in classes requiring spec motors and for certain track conditions that allow the racer to take full advantage of the performance offered from reduced weight" make this not a good choice for 13.5 and lower turn motors?

Would you need to add weight (basically negated the advantages of the kit) to make it handle well in modified? I don't see the sense of buying a lightened kit and then adding weight.

I would run it at a high grip indoors (slicks) and large outdoor (1/8th style track, not sure of tire).
A car will only handle as well as its operator has set it up. Regardless of weight, a car is limited on its setup and tire selection. Weight is subjective, it all comes back to driver ability and setup. No two cars are alike, and in this world of customization, a set up for a car that weights 1600 grams would work well on a car that weights 1450 grams.
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Old 03-05-2015, 02:17 PM   #12195
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Originally Posted by jpcopeland1 View Post
Too rich for my blood. But then again my B5M is mod only. Have a B5 for stock. Out of the box lightness.... How would these things even hold up in the event of a punt, or direct hit to the axle?
These are made with a high strength grade 5 titanium. They are much stronger than the crappy Chinese steel that the kit uses. Sheer strength is 80,000 PSI. So they will hold up much better than the stock axles and weigh half as much, also since the weight is being removed from the furthest end of the drivetrain it has a bigger effect that a weight loss and the center.
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