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Alex Racing Barracuda R2 & R3

Alex Racing Barracuda R2 & R3

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Old 04-02-2004, 09:39 AM
  #10396  
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Originally posted by ImGoinRCn
new belt car?
No, Losi just refined the drivetrain, put a larger roller pulley and spaced it further away from the spur pulley so there is less of a kink in the belt, made a huge difference.
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Old 04-02-2004, 09:41 AM
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Hey Steve
Question about the mid span and long arm..Which of the arm do you perfer for outdoor racing? I'm running R2
The track is huge like tamiya track and ton of traction
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Old 04-02-2004, 09:52 AM
  #10398  
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Originally posted by Randman
No, Losi just refined the drivetrain, put a larger roller pulley and spaced it further away from the spur pulley so there is less of a kink in the belt, made a huge difference.
I see said the blind man to his deaf wife
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Old 04-03-2004, 04:00 AM
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I've built the car on 24mm wheels but it looks like i'll get binding if i put on 26mm wheels or bigger, are you guys using spacers or something to make the clearences ??
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Old 04-03-2004, 04:04 AM
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can the cuda steering rack fit the TC3?
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Old 04-03-2004, 08:07 AM
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Originally posted by Merciless
I've built the car on 24mm wheels but it looks like i'll get binding if i put on 26mm wheels or bigger, are you guys using spacers or something to make the clearences ??
I used a washer or 2 to make the clearence...Steve sells the clamping hubs that is supposed to eliminate that...
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Old 04-03-2004, 06:47 PM
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does the drivetrain stay pretty clean being open like that....
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Old 04-03-2004, 07:13 PM
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Originally posted by mkennedy
does the drivetrain stay pretty clean being open like that....
it stays clean as long as the track isn't real dusty/dirty. It's not really an issue for me.
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Old 04-04-2004, 11:53 AM
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Originally posted by OVA
Hey Steve
Question about the mid span and long arm..Which of the arm do you perfer for outdoor racing? I'm running R2
The track is huge like tamiya track and ton of traction
OVA,

Try using the long arms for outdoor racing. Long-arms tend to be more stable in outdoors conditions, especially for the size of the track you mentioned.

Steve Wang
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Old 04-04-2004, 11:54 AM
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Originally posted by carkillaii
can the cuda steering rack fit the TC3?
Carkillaii,

Most likely not. The R3 rack is a lot thicker than the TC3 rack, so I'm assuming it is not a direct fit. However, it might be possible with some modification.

Steve Wang
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Old 04-04-2004, 12:44 PM
  #10406  
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hey guys,

i just got, on loan, a xenon r2 from a friend a few weeks ago. i am just trying to dial it in for him. after rebuilding the car from the ground up, i developed a few questions and comments

1) what are all of the available castor block (c-hub) options for this car? who makes them, what material, and most important...what is the castor angle?
i saw the recent posts that the xenon c-hubs are 7*. i might agree, but i do know that the graphite variety that his parts box is littered with are not 7*. they are closer to 4 or 5. i assume that these are stock blocks, but are stock blocks different for the r1, r2, and r3? what about the square front hubs? will any other manufacturers c-hubs work correctly? fyi - rclab, and kyosho tf4 series fit quite well, but the kingpin hole for both is about 1.5mm offset to the wider.

2) the shocks really do suck. they have to be assembled to produce a mild vaccum at full extension. that kills droop settings beyond that which use the distance of the spring preload. i'm sure they are fine on the track, but i don't like the lack of volumetric compensation.

3) what is the physical explanation for the performance difference between the long and mid span arms? it must all be related to the dynamic change in roll center during chassis roll conditions, since the camber links can also be modified to produce a similar camber gain curve for both arms.
from a design standpoint, i have always liked the cars with long arms. like steve pointed out, with long arms the mechanical advantage at the wheel is reduced, so you can run softer springs to get the same wheel rate. additionally, it provides better resolution at the shock so that slop in the linkage is less evident, and there is more piston movement for a given wheel travel. with all the roll center options available, is it not possible to the long arm car to respond like that of the mid? a high roll center can increase responsiveness. has anyone tried this before going to the shorter arms?

well, that'll do for now.

one last comment - the car is brilliant on may levels. so much so, that i am scrutinizing the suspension design because i intend to use it on some prototype stuff. just like the atlas team is!

thanks for your time guys.

chris





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Old 04-04-2004, 01:34 PM
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Thumbs up Fish tank sale

Fish sale link:

http://www.rctech.net/forum/showthre...threadid=37366
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Old 04-04-2004, 04:12 PM
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Default Re: Fish tank sale

Originally posted by madjack
Fish sale link:

http://www.rctech.net/forum/showthre...threadid=37366

another fish thrown back into the sea. what are you going to run now?
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Old 04-04-2004, 10:37 PM
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Default Re: Re: Fish tank sale

Originally posted by AWOLsoldier
another fish thrown back into the sea. what are you going to run now?

Not sure yet, R3 or 415...I live about 15 mins from Tamiya America
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Old 04-04-2004, 11:05 PM
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Default Re: Re: Re: Fish tank sale

Originally posted by madjack
Not sure yet, R3 or 415...I live about 15 mins from Tamiya America
good choices... but what does living close to tamiya have to do with anything?
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