Caged Optima MkII

The place for all things Kyosho.

Moderators: scr8p, klavy69

Post Reply
User avatar
DennisM
Approved Member
Posts: 2403
Joined: Sun Feb 26, 2012 7:07 am
Location: Denmark
Has thanked: 30 times
Been thanked: 64 times

Caged Optima MkII

Post by DennisM »

Scorpion trailing arms

Belt conversion for Stinger (Very Heavy Duty compared to the Optima conversion)

Plan is to find some telescopic driveshafts for the rear.
Attachments
2015-12-29 13.09.54.jpg
2015-12-29 13.10.01.jpg
Gone fishing

User avatar
losiXXXman
Approved Member
Posts: 936
Joined: Sat Aug 29, 2009 9:53 am
Location: Cary, NC
Been thanked: 5 times

Re: Caged Optima MkII

Post by losiXXXman »

Cool!. Question for you Dennis. Are you making your cages yourself with tubing bender? I want to have a near stock looking Ultima, but have not yet tried to make a cage.

User avatar
DennisM
Approved Member
Posts: 2403
Joined: Sun Feb 26, 2012 7:07 am
Location: Denmark
Has thanked: 30 times
Been thanked: 64 times

Re: Caged Optima MkII

Post by DennisM »

Thanks -

I use solid T6 6061 6mm alu rods - they bend well mounted in the bench vise (no flattening)
If I were to use tube, I´d use tubing bender, as You suggest, and a softer alloy.

Lars (HCP22) has a very detailed build thread on here, called "Blueprint Scorpion", where he explains how he built his cage from aluminum tubing - It´s worth a look.

I saw a original cage on the "bay" not too long ago - pricey but still cheaper if You compare it with the hours spent.
But If You want a custom cage - then it´s just to start bending away :D

If It where me trying to replicate the Ultima cage, I´d go for TIG and Stainless steel 6mm Hydraulic pipe.
Gone fishing

User avatar
Mr. ED
Approved Member
Posts: 5475
Joined: Thu Dec 21, 2006 1:30 am
Location: Back @ home: Belgium
Has thanked: 58 times
Been thanked: 56 times

Re: Caged Optima MkII

Post by Mr. ED »

Now I see why you were trying to get me to use scorpion trailing arms on the MX834 ;)

For the sliding axles , you could try using traxxas parts of the bandit

User avatar
DennisM
Approved Member
Posts: 2403
Joined: Sun Feb 26, 2012 7:07 am
Location: Denmark
Has thanked: 30 times
Been thanked: 64 times

Re: Caged Optima MkII

Post by DennisM »

Traxxas check - I´ve made one (radicator II) but not really satisfied.
I started this build Yesterday, since You didn´t wanna test the Scorpion arms for me :)
Gone fishing

User avatar
Mr. ED
Approved Member
Posts: 5475
Joined: Thu Dec 21, 2006 1:30 am
Location: Back @ home: Belgium
Has thanked: 58 times
Been thanked: 56 times

Re: Caged Optima MkII

Post by Mr. ED »

I tested those plenty when I built the ghost-rider.
They're a pain for anyone wanting offroad capable suspension travel :lol:

AYKBOBCAT
Approved Member
Posts: 585
Joined: Wed Nov 22, 2006 2:32 pm
Location: Bas St-Laurent, Canada

Re: Caged Optima MkII

Post by AYKBOBCAT »

DennisM wrote: Plan is to find some telescopic driveshafts for the rear.
You might be interested in this setup.

http://www.tamiyaclub.com/showroom_model.asp?cid=127816

Good solution for cheap I think, if that's what you have in mind.

User avatar
DennisM
Approved Member
Posts: 2403
Joined: Sun Feb 26, 2012 7:07 am
Location: Denmark
Has thanked: 30 times
Been thanked: 64 times

Re: Caged Optima MkII

Post by DennisM »

Thanks for the link -
It´s a nice UJ, but not telescopic/sliding.

With fully compressed suspension, the shafts bind - at normal stance, they´re about to pop out.
Gone fishing

User avatar
Mr. ED
Approved Member
Posts: 5475
Joined: Thu Dec 21, 2006 1:30 am
Location: Back @ home: Belgium
Has thanked: 58 times
Been thanked: 56 times

Re: Caged Optima MkII

Post by Mr. ED »

DennisM wrote:Thanks for the link -
It´s a nice UJ, but not telescopic/sliding.

With fully compressed suspension, the shafts bind - at normal stance, they´re about to pop out.
You should be able to solve that without a need for telescoping shafts. Try raising that cross plate a little. You may have to move the wheels a little further behind the outdrives too. Worst case scenario: Limit the shock travel.
Don't you wish they made longer trailing arms. That'd solve some of the angle changing issues.

User avatar
DennisM
Approved Member
Posts: 2403
Joined: Sun Feb 26, 2012 7:07 am
Location: Denmark
Has thanked: 30 times
Been thanked: 64 times

Re: Caged Optima MkII

Post by DennisM »

I tried with some 2mm spacers under the suspension studs - didn´t do much difference.

It´s no problem at normal stance, but the dogbones will disappear when it gets air - and since it´s more or less a rocket, it´s going to get a lot of air :mrgreen:
Gone fishing

User avatar
Mr. ED
Approved Member
Posts: 5475
Joined: Thu Dec 21, 2006 1:30 am
Location: Back @ home: Belgium
Has thanked: 58 times
Been thanked: 56 times

Re: Caged Optima MkII

Post by Mr. ED »

you give up too quick :lol:

I have U-J's on the ghostrider as i was worried about popping dogbones. With U-J's at least they won't get lost.
I used it in 3 maybe 4 races and never poped even one.

True: I use shorter rear shocks, but I also spent a long time in getting the swing and angle changes to work out right for the dogbone end to stay in the drive cups

User avatar
DennisM
Approved Member
Posts: 2403
Joined: Sun Feb 26, 2012 7:07 am
Location: Denmark
Has thanked: 30 times
Been thanked: 64 times

Re: Caged Optima MkII

Post by DennisM »

To be honest, it all comes down to bearings :lol:
I made the width of the rear planing on using the Optima UJ´s
And they fit! but I didn´t have any 5x10x3 bearings, only 5x10x4 which made it bind.
So I went on a rampage and found some PB wheelshafts and Avante dogbones :P

Just ordered proper bearings and another 1/18 crawler slider shaft, which will be cut to fit.
Gone fishing

User avatar
Hcp22
Approved Member
Posts: 1858
Joined: Sat Jun 19, 2010 6:31 am
Location: Gothenburg Sweden
Has thanked: 33 times
Been thanked: 16 times

Re: Caged Optima MkII

Post by Hcp22 »

It looks grate Dennis :D
Cheers
Lars

My Feedback

BoostCreep
Approved Member
Posts: 45
Joined: Sat Jan 09, 2016 11:55 pm
Location: Central Virginia

Re: Caged Optima MkII

Post by BoostCreep »

I love the caged look on that chassis. Have you made any progress since then?

That is definitely an interesting build. Curious to see how you work out the halfshafts.

User avatar
DennisM
Approved Member
Posts: 2403
Joined: Sun Feb 26, 2012 7:07 am
Location: Denmark
Has thanked: 30 times
Been thanked: 64 times

Re: Caged Optima MkII

Post by DennisM »

Thanks for the kind words -

Regarding the progress: The bearings arrived so now it sits with the Optima UJ´s - no binding or popping of.
I´ll need Jeff to cut me a saddle chassis, LiPo cradles, narrow topdeck, front and rear shock mount and and and... :lol:
Gone fishing

Post Reply

Create an account or sign in to join the discussion

You need to be a member in order to post a reply

Create an account

Not a member? register to join our community
Members can start their own topics & subscribe to topics
It’s free and only takes a minute

Register

Sign in

  • Similar Topics
    Replies
    Views
    Last post
  • Caged Ultima
    by losiXXXman » » in Kyosho Forum
    5 Replies
    1037 Views
    Last post by losiXXXman
  • caged ultima mk1 ..
    by djrosco9 » » in Kyosho Forum
    5 Replies
    1235 Views
    Last post by Hcp22
  • Caged slim chassis RC10
    by DennisM » » in RC10 Buggy Forum
    18 Replies
    3108 Views
    Last post by blubblood
  • Stinger MkII, what next?
    by Mr. ED » » in Kyosho Forum
    4 Replies
    886 Views
    Last post by Mr. ED
  • Stinger MKII
    by esaresky75 » » in Kyosho Forum
    1 Replies
    759 Views
    Last post by slowboy
  • MKII Throttle linkage
    by lebowski770 » » in Kyosho Forum
    2 Replies
    739 Views
    Last post by USA-1
  • slant tank in MKII?
    by lebowski770 » » in Kyosho Forum
    1 Replies
    514 Views
    Last post by USA-1
  • Stinger MKII Rebuild
    by Bakauata » » in Kyosho Forum
    20 Replies
    3269 Views
    Last post by HatTrick

Return to “Kyosho Forum”

Who is online

Users browsing this forum: No User AvatarAhrefs [Bot] and 22 guests