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Xpress Arrow AT1

Old 07-14-2022, 01:07 PM
  #196  
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Originally Posted by Juan Aveytia View Post
Run the same body without the holes cut out. You’ll go the same speed. Some things will help. Cutting the body up like that does nothing for track performance
I already cut the same body without the holes, and will be testing soon....We'll see the difference, and I am never afraid to experiment a little. Thanks Xpress for having faith in the At1: I might lighten up one(At1.2) to the max one of these days..Hopefully someone will make aluminum and titanium lightweight parts for it soon....

Last edited by bertrandsv87; 07-14-2022 at 01:27 PM.
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Old 07-14-2022, 02:21 PM
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Originally Posted by bertrandsv87 View Post
I already cut the same body without the holes, and will be testing soon....We'll see the difference, and I am never afraid to experiment a little. Thanks Xpress for having faith in the At1: I might lighten up one(At1.2) to the max one of these days..Hopefully someone will make aluminum and titanium lightweight parts for it soon....
Hey Burt
most of the peoples online telling you that they are right.. improve your driving skill first ,before doing all this non sense weight reduction
light part are great but you still have to drive and stay off the pipes
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Old 07-14-2022, 04:22 PM
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Originally Posted by Robbob View Post
Anyone heard of a new ship date from the changes they made?
Rcmart says 22 July
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Old 07-14-2022, 05:02 PM
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Default Lower rotating mass!

Originally Posted by Marcos.J View Post
everything needs to be lighter according to bert, heres his lightweight F1
whilst efforts to lower total mass is nothing short of amazing! I read somewhere that lowering rotating mass has a bigger and marked effect, then removal of static mass.

It occurs to me therefore, and prolly to other astute engineering minds out there, that the wheels... are the largest and heaviest rotating masses. As such, removal of the 4 wheels, will give you the fastest, lightest, and best performing car of all your peers. You shall be the very envy of the start line!

Do not hesitate! Decision and action shall reward you commensurably.
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Old 07-14-2022, 05:34 PM
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To further upon what Foampervert stated in the 90s during the Pro10 days, we learned that you toe a line when you get too light, you no longer have enough Mass to effectively use mechanical Grip, regardless of how much downforce you have! When you are not generating downforce you lose the ability to make use of grip - you are too light. Hence when the "overweight" HPI Roadstar 10G came out it did pretty well. Same goes for 1:8 2wd Pan and the 1:8EG stock (Buri, R8S, Capricorn C8SR etc.) When you run (light) 2x2s Lipo shorties instead of Regular 2X2S or a 4S pack you can feel the "float" / loss of grip on the track, high or low grip.

As for the AT1 I am sure it will be a welcome change. Especially for those of us not fast enough anymore. 😁
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Old 07-14-2022, 06:07 PM
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Originally Posted by 1/8 IC Fan View Post
To further upon what Foampervert stated in the 90s during the Pro10 days, we learned that you toe a line when you get too light, you no longer have enough Mass to effectively use mechanical Grip, regardless of how much downforce you have! When you are not generating downforce you lose the ability to make use of grip - you are too light. Hence when the "overweight" HPI Roadstar 10G came out it did pretty well. Same goes for 1:8 2wd Pan and the 1:8EG stock (Buri, R8S, Capricorn C8SR etc.) When you run (light) 2x2s Lipo shorties instead of Regular 2X2S or a 4S pack you can feel the "float" / loss of grip on the track, high or low grip.

As for the AT1 I am sure it will be a welcome change. Especially for those of us not fast enough anymore. 😁
I agreed
But Burt isnt thinking about the tires grip , Burt just wanted to go fast lighting acceleration speed
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Last edited by OVA; 07-16-2022 at 01:56 AM.
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Old 07-14-2022, 06:17 PM
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Amazing how the AT1, 420 or MTC2 tread went so off tangent to become the lightweight FGX thread.
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Old 07-16-2022, 06:00 AM
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Originally Posted by OVA View Post
I agreed
But Burt isnt thinking about the tires grip , Burt just wanted to go fast lighting acceleration speed
I think this actually happened at the last ETS round Yokomo dominated, they have the heaviest suspension out of the top cars and could generate more heat in the tyre in the cooler conditions.
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Old 07-16-2022, 02:04 PM
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Originally Posted by bertrandsv87 View Post
Lightweight everything is the main idea guys...Hell, I even shower in lightweight water only...Hope you all the best...
please move on to Express Arrow AT1 discussing
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Old 07-16-2022, 05:34 PM
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Originally Posted by rccartips View Post
Amazing how the AT1, 420 or MTC2 tread went so off tangent to become the lightweight FGX thread.
i know I am with you. We are aware of his "bench" racing.

i may try one of these as a 200mm conversion. Just have to machine some delrin arms and fit new driveshafts.
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Old 07-18-2022, 12:17 PM
  #206  
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Kits are getting close now.

I wonder if the new metal inserts should be glued in place?
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Old 07-18-2022, 12:44 PM
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Hmm, just noticed that according to the manual, I'll need the optional camber plates in order to match upper tie-rod lengths with the XQ10R and XQ10S.
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Old 07-18-2022, 12:47 PM
  #208  
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Originally Posted by DavidNERODease View Post
Kits are getting close now.

I wonder if the new metal inserts should be glued in place?
maybe ..snug or snap fit together
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Old 07-18-2022, 04:02 PM
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We don't glue the gears onto the pins on any other diff. There's not much point, they can't move away from it because the spider gears will press it back. And I think this diff has a countersunk screw holding the gear in place anyway.
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Old 07-18-2022, 07:51 PM
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Yep, I totally forgot about the screws. I was worried it would wiggle a bit but no worries now.
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