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ARC A10-25

Old 05-01-2024, 01:53 PM
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Just noticed this in the manual.
Figured not many of us scroll past the part of installing electronics .... But they give you an idea for caster.

Though you do need an extra set of hex's that use a grub screw.
Or a 2mm tip will fit right in the slot on the actual hub. I think thats what they are showing.
Just food for thought



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Old 05-01-2024, 05:28 PM
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Originally Posted by Robbob
Just noticed this in the manual.
Figured not many of us scroll past the part of installing electronics .... But they give you an idea for caster.

Though you do need an extra set of hex's that use a grub screw.
Or a 2mm tip will fit right in the slot on the actual hub. I think thats what they are showing.
Just food for thought
Given the play in the screw head, this will only give an approximation. Not particularly accurate.
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Old 05-01-2024, 05:40 PM
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Originally Posted by gigaplex
Given the play in the screw head, this will only give an approximation. Not particularly accurate.
Agree but close enough for quick track changes to try, drivers with out a caster doodle and government employees.
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Old 05-01-2024, 05:44 PM
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I don't think that is what they are showing. You can never be sure your wheel hexes would be in the right position (motor cogging thang). That's the slot built into the hub itself.



Only explanation I can find for this screw honestly.
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Last edited by Carnage9270; 05-01-2024 at 06:06 PM.
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Old 05-01-2024, 06:43 PM
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Originally Posted by Carnage9270
I don't think that is what they are showing. You can never be sure your wheel hexes would be in the right position (motor cogging thang). That's the slot built into the hub itself.



Only explanation I can find for this screw honestly.
We're not talking about the wheel hex, we're talking about the 2mm hex head driver tool
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Old 05-01-2024, 06:53 PM
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Originally Posted by gigaplex
We're not talking about the wheel hex, we're talking about the 2mm hex head driver tool
I was speaking to what Rob eluded to...he's was talking about a set of hexes with a grub screw. That's not where you want to measure caster from. Place the driver in the slot in the steering block (which he mentioned as well) and you can tighten it down (or capture it tighter) with the cap head screw in my pic.
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Last edited by Carnage9270; 05-01-2024 at 07:15 PM.
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Old 05-04-2024, 02:39 AM
  #52  
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This car doesn't have grub screws in the hex's

The 2mm driver fits snugly in the slot but I would recommend getting the Smokem caster gauges for the 25
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Old 05-12-2024, 06:39 PM
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Got to run the '25 saturday on carpet. Smooth, very predictable and for sure durable.
Only lost a front body post but luckily the track had a drop in replacement.

I found myself chasing the rear all day but not to keep it under the car.
I was finding as the track was getting faster and bite was coming up I was developing on power pushes.
Mid to exit I could grab more throttle but it was a feather to keep the front steering. Add some dual rate each round and it exited with power.

Not a bad thing but now I wanna find more natural steering in the car.
Very happy though with a new platform for me, super happy with the parts I was testing too.

Im also playing with something from my Mi8 days that they made into the 9.
I found ARC makes a lower 5.8mm pivot ball that drops the RC 1.5mm compared to kit.
They sell them 2 per pack but I couldnt find 4 packs in the states so I went to the BD7.
Their shock mount pivot balls are 5.8mm and 1.5mm shorter. Drop right in - plenty of movement and opens the tuning up some more.
Didnt have those on but they are now for the next track day.







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Old 05-18-2024, 02:52 PM
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Krazedbuilds has some goodies !!

https://krazedbuilds.com/shop/arc-a1...w8Cyr67pTTWq3G








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Old 05-26-2024, 03:18 PM
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flipping the hubs work just fine( not my car its Team Driver EC Kim)
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Old 05-27-2024, 07:50 AM
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When you flipped the hubs what was the gain?
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Old 05-27-2024, 07:54 AM
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Originally Posted by topfuelhobbies
When you flipped the hubs what was the gain?
use the AMX caster doodles for one plus what’s the advantage of using them the other way ?
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Old 05-27-2024, 02:13 PM
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Lower CG like Schumacher and Xray?
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Old 05-27-2024, 04:35 PM
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Originally Posted by rccartips
Lower CG like Schumacher and Xray?
possibly but unnoticeble from the driverstand lol
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Old 05-28-2024, 03:45 AM
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Originally Posted by topfuelhobbies
When you flipped the hubs what was the gain?
Originally Posted by Marcos.J
use the AMX caster doodles for one plus what’s the advantage of using them the other way ?
Originally Posted by rccartips
Lower CG like Schumacher and Xray?
They're virtually symmetrical when you measure from the axle center to either mounting side.
Not really any CG change, def not any thats gonna have a pro/con change.

It will change the way the rear toe reacts and the front bump steer.
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