Wheelbase Holes on Rear Arm Mounts

General discussion, builds/restorations, etc...

Moderators: scr8p, klavy69

User avatar
toyranosaur
Business Member
Posts: 233
Joined: Thu Jul 03, 2008 12:50 pm
Location: USA
Been thanked: 1 time

Wheelbase Holes on Rear Arm Mounts

Post by toyranosaur »

Say Chaps, I am in the process of working on the rear arm mounts. I want them adjustable for 0-1.5-3 degrees, which will not in itself be a prob. BUT, doing both sets of holes for adjusting the wheelbase is not gonna work cleanly with my present design. So, the big question is: do most guys run the WB short or long? I need to know so I can either do a set that'll take care of 95% of people, or if it's split enough, a set of each (One for LWB, one for SWB.)

Please let me know your thoughts Gentlemen! Thank You, Chris REC

User avatar
soniccj5
Approved Member
Posts: 1210
Joined: Thu Jan 10, 2008 8:23 pm
Location: Massachusetts
Been thanked: 2 times

Re: Wheelbase Holes on Rear Arm Mounts

Post by soniccj5 »

I just started running LWB because the holes for the SWB are worn out.

Either one will be a great improvement in my opinion.

User avatar
CamplinP
Approved Member
Posts: 763
Joined: Tue Sep 01, 2009 3:43 am
Location: Midwest Husker, USA
Been thanked: 2 times

Re: Wheelbase Holes on Rear Arm Mounts

Post by CamplinP »

I usually run in the long position. I do not seriously race though and my tracks are large. By the way new stuff is going with the extended chassis I would say long is the way to go.
The Fox, Falcon, 9 RC10s black/gold/graph, Optima Mid SE EXT, Losi XXXT, B3, B4, 3 T4s, Evader BX, Evader ST, Buggy Champ '09, Sand Scorcher '10, RC10T, RC10DS

User avatar
jwscab
Super Member
Posts: 6487
Joined: Wed Jan 28, 2009 2:42 pm
Location: Chalfont, PA
Has thanked: 10 times
Been thanked: 443 times

Re: Wheelbase Holes on Rear Arm Mounts

Post by jwscab »

I've built them both ways, but typically in the 'long' wheelbase.

Here's a question, if you were to make the long and short wheelbase, but only do 0 degree and 3 degree positions, would that work? I'm pretty sure you would run either of those settings nominally, and if someone needed to run 1.5 degree, they could also set up to 0 at the mount, and 1.5 at the hub.

what i'm trying to say is that I think only few guys would need to have that toe granularity vs. long/short wheelbase. I'm not a hardcore racer, but I would think the wheelbase option would give you a better tuning tool than a small change in toe. So please take my opinion with a grain(maybe two) of salt.

Jay Dub
Approved Member
Posts: 1136
Joined: Tue Jul 29, 2008 5:04 am
Location: San Jose, Ca.
Been thanked: 1 time

Re: Wheelbase Holes on Rear Arm Mounts

Post by Jay Dub »

Not to insult anyone, but a serious racer would never run the long wheelbase option because of the dogbone/axle angle it creates. Too much dynamic squat. However, the holes could be moved a smidge rearward with the 3 degree option in order to keep the dogbone/axles straight. -Jeff

User avatar
Y'ernat Al
Approved Member
Posts: 921
Joined: Wed Jan 14, 2009 6:15 am
Location: Spokane WA
Has thanked: 7 times
Been thanked: 16 times

Re: Wheelbase Holes on Rear Arm Mounts

Post by Y'ernat Al »

Jay Dub wrote:Not to insult anyone, but a serious racer would never run the long wheelbase option because of the dogbone/axle angle it creates. Too much dynamic squat. However, the holes could be moved a smidge rearward with the 3 degree option in order to keep the dogbone/axles straight. -Jeff
I like the long wheel base setting here. -A not so serious racer.

J, I feel insulted that I can't wrap my thick skull around this one. I thought dynamic anti-squat changes with where your toe-in is coming from (the carriers versus the arm mounts). I don't want to take this thread sideways, but how does an angle in the dog-bone (that comes purely from sliding the rear arm mount backward) really matter?

edit - Looking forward to these Chris! Thanks!. Even though I do agree with the material comment by jwscab below, I would be willing to try aluminum bolted to aluminum in this case. I could always use nylon 8-32 screws if I thought I needed a fuse there.
- Brian -

My Gallery

User avatar
jwscab
Super Member
Posts: 6487
Joined: Wed Jan 28, 2009 2:42 pm
Location: Chalfont, PA
Has thanked: 10 times
Been thanked: 443 times

Re: Wheelbase Holes on Rear Arm Mounts

Post by jwscab »

whichever way you design them, I think you should make them from 6/6 nylon, you would have a larger customer base that way. The plastic construction there tends to be the fuse, where aluminum would move the stress farther inboard, ie, the chassis.

User avatar
dldiaz
Approved Member
Posts: 795
Joined: Thu Apr 01, 2010 3:21 pm
Location: San Antonio, TX
Has thanked: 14 times
Been thanked: 34 times

Re: Wheelbase Holes on Rear Arm Mounts

Post by dldiaz »

I put in some significant time today prepping one of the RC10 models I plan to take to VONats this year.

The particular model I am working on, I bought as used/good condition - while taking it apart I notice the previous owner had it in the long wheelbase configuration.
- My instinct was to rebuild as short wheelbase (i.e. the rearward holes on rear arm mounts)
- Then I thought, is there any tuning science that would support using one wheelbase option over the other?

Well, it looks like the original RC10 Worlds manual recommended the short wheelbase configuration.
BUT, the Worlds ReRe manual recommends the long wheelbase...

Above thread seems like there are opinions to support both options?
- Certainly the funky shock/dog-bone angles are one reason to go short. :lol:


Any new or different thoughts on this wheelbase question??
-dldiaz

User avatar
juicedcoupe
Super Member
Posts: 2936
Joined: Sun Aug 16, 2020 8:05 pm
Location: Pascagoula, MS
Has thanked: 227 times
Been thanked: 1703 times

Re: Wheelbase Holes on Rear Arm Mounts

Post by juicedcoupe »

Screenshot_20220904-083812_Drive.jpg
If you look in the setup pages on AE's site, you will see that BK still used the short wheelbase at that time.
Always looking for new and interesting ways to waste money.

JosephS
Super Member
Posts: 1458
Joined: Thu Mar 23, 2017 9:31 pm
Has thanked: 966 times
Been thanked: 424 times

Re: Wheelbase Holes on Rear Arm Mounts

Post by JosephS »

dldiaz wrote: Sun Sep 04, 2022 3:18 am I put in some significant time today prepping one of the RC10 models I plan to take to VONats this year.

The particular model I am working on, I bought as used/good condition - while taking it apart I notice the previous owner had it in the long wheelbase configuration.
- My instinct was to rebuild as short wheelbase (i.e. the rearward holes on rear arm mounts)
- Then I thought, is there any tuning science that would support using one wheelbase option over the other?
It's a tuning option. Get some practice in and try it each way. It should be a lot like weight distribution: pushing the weight of the car more to the rear wheels or the front wheels.

JosephS
Super Member
Posts: 1458
Joined: Thu Mar 23, 2017 9:31 pm
Has thanked: 966 times
Been thanked: 424 times

Re: Wheelbase Holes on Rear Arm Mounts

Post by JosephS »

toyranosaur wrote: Fri Jan 25, 2013 6:29 pm Say Chaps, I am in the process of working on the rear arm mounts. I want them adjustable for 0-1.5-3 degrees, which will not in itself be a prob. BUT, doing both sets of holes for adjusting the wheelbase is not gonna work cleanly with my present design. So, the big question is: do most guys run the WB short or long? I need to know so I can either do a set that'll take care of 95% of people, or if it's split enough, a set of each (One for LWB, one for SWB.)

Please let me know your thoughts Gentlemen! Thank You, Chris REC
I run the short wheelbase. It's the manual setup and I don't race.
Would the 0 degree setup allow for Traxxas bandit arms on a classic rc10?

User avatar
juicedcoupe
Super Member
Posts: 2936
Joined: Sun Aug 16, 2020 8:05 pm
Location: Pascagoula, MS
Has thanked: 227 times
Been thanked: 1703 times

Re: Wheelbase Holes on Rear Arm Mounts

Post by juicedcoupe »

JosephS wrote: Sun Sep 04, 2022 4:43 pm Would the 0 degree setup allow for Traxxas bandit arms on a classic rc10?
https://www.rc10talk.com/viewtopic.php?f=35&t=40129
Always looking for new and interesting ways to waste money.

JosephS
Super Member
Posts: 1458
Joined: Thu Mar 23, 2017 9:31 pm
Has thanked: 966 times
Been thanked: 424 times

Re: Wheelbase Holes on Rear Arm Mounts

Post by JosephS »

juicedcoupe wrote: Sun Sep 04, 2022 5:28 pm
JosephS wrote: Sun Sep 04, 2022 4:43 pm Would the 0 degree setup allow for Traxxas bandit arms on a classic rc10?
https://www.rc10talk.com/viewtopic.php?f=35&t=40129
That post is why I am asking. I wasn't sure if the nix parts were needed or if 0Degree mounts were enough.

User avatar
juicedcoupe
Super Member
Posts: 2936
Joined: Sun Aug 16, 2020 8:05 pm
Location: Pascagoula, MS
Has thanked: 227 times
Been thanked: 1703 times

Re: Wheelbase Holes on Rear Arm Mounts

Post by juicedcoupe »

JosephS wrote: Sun Sep 04, 2022 7:06 pm
juicedcoupe wrote: Sun Sep 04, 2022 5:28 pm
JosephS wrote: Sun Sep 04, 2022 4:43 pm Would the 0 degree setup allow for Traxxas bandit arms on a classic rc10?
https://www.rc10talk.com/viewtopic.php?f=35&t=40129
That post is why I am asking. I wasn't sure if the nix parts were needed or if 0Degree mounts were enough.
RC10 rear mounts are a good bit wider than Traxxas mounts. The hinge pin is larger as well.
Always looking for new and interesting ways to waste money.

  • Similar Topics
    Replies
    Views
    Last post
  • Help with Rear arm mounts, Front and Rear carriers
    by cowsrneat2002 » » in Temple's RC10 Tech Forum
    10 Replies
    1498 Views
    Last post by cowsrneat2002
  • rear arm mounts
    by GoldRush » » in RC10 Truck Forum
    8 Replies
    966 Views
    Last post by longboardnj
  • B3/T3/GT rear arm mounts
    by Mja75 » » in RC10 Truck Forum
    1 Replies
    371 Views
    Last post by jwscab
  • T4 rear arm mounts? HELP!!!
    by ELF-BMX » » in 21st Century Modern
    6 Replies
    968 Views
    Last post by ELF-BMX
  • Inner rear arm mounts
    by Northy2 » » in Temple's RC10 Tech Forum
    15 Replies
    1387 Views
    Last post by templeofspeed
  • Compatible rear arm mounts?
    by zukmon » » in RC10 Truck Forum
    7 Replies
    1064 Views
    Last post by Toasted Coastie
  • arm mounts- front and rear
    by muck » » in Temple's RC10 Tech Forum
    6 Replies
    911 Views
    Last post by slow_jun
  • rc10 rear arm mounts
    by longboardnj » » in Temple's RC10 Tech Forum
    160 Replies
    11473 Views
    Last post by SnoopMaxx

Return to “RC10 Buggy Forum”

Who is online

Users browsing this forum: No User AvatarCommonCrawl [Bot], No User AvatarGoogle [Bot] and 57 guests