Page 7 of 8

Re: Scorpion 4x4 Build project

Posted: Sun Apr 30, 2017 4:48 pm
by Dadio
I'm pretty chuffed that it still looks so much like a Scorpion , I've had to make a couple of compromises , the wheels and tyres ,cvj's etc but I feel I still have the essence of scorpion in the design.

Re: Scorpion 4x4 Build project

Posted: Tue May 02, 2017 3:56 pm
by Dadio
Painting went well and I've given the chassis and wheels a scrub , I'm just waiting on a new set of decals and I'll get some finishing photo's before she gets all grubby and scratched up , after the photo session it's gloves off and a video of her getting some proper rough and dirty driving .

Re: Scorpion 4x4 Build project

Posted: Wed May 03, 2017 3:03 am
by Lonestar
Dadio wrote: Tue May 02, 2017 3:56 pm Painting went well and I've given the chassis and wheels a scrub , I'm just waiting on a new set of decals and I'll get some finishing photo's before she gets all grubby and scratched up , after the photo session it's gloves off and a video of her getting some proper rough and dirty driving .
Honestly, I can't wait to see a vid of that pre-optima 4wd that kyosho should have done bitd :!:

Re: Scorpion 4x4 Build project

Posted: Sun May 07, 2017 4:45 am
by Dadio
Well not going to enter the Build Of The Month this month as I'm still waiting on the decal sheet too arrive :( i'll put her in the next open contest , she's all clean and ready on the shelf but I'm not going to drive her till after the finished photo's , i hate detailed cleaning ! The decals should arrive in a day or two so its not long to wait ,then her real life begins ! none of my cars are shelf queens , even my Dog Fighter yz834-b gets driven from time to time but the Scorpion is in for a much harder life :D

Re: Scorpion 4x4 Build project

Posted: Mon May 08, 2017 3:02 pm
by Dadio
A few finished pictures , video soon.
Image
Image
Image
Image

Re: Scorpion 4x4 Build project

Posted: Mon May 08, 2017 3:40 pm
by DennisM
Very very cool!
Next up is the Turbo Scorpion :mrgreen:

Re: Scorpion 4x4 Build project

Posted: Mon May 08, 2017 3:57 pm
by Dadio
My paint scheme is heavily Turbo Scorpion inspired obviously , I'm waiting and watching to see when the Turbo parts are on sale , I really want a white tub and wing , I'm no fan of the yellow tub and wing in fact it haunted me when I first built the kit ! I painted over the yellow tub with white paint but the yellow die in the plastic leeched through , even after 6 coats it was still coming through , I thought it might be some transparency causing the effect so I painted the tub internally as well but it still turned yellow , that's why I got the black tub and that took the paint just fine , strangely the yellow wing took the white paint just fine .

Re: Scorpion 4x4 Build project

Posted: Sun May 14, 2017 3:13 pm
by Dadio
Well i made a short video with the help of a friend but its not great quality , its a stills digi camera taking video , i have now got trouble with the chain tension so i need to make a tensioner , i guess as the chain has run in and stretched a little . Anyway it was no surprise and i always expected to need a tensioner
https://youtu.be/8Zch4oMkta4

Re: Scorpion 4x4 Build project

Posted: Sun May 14, 2017 10:49 pm
by 1300GT
Great build! 8)

I've been running mine to sort out any problems before I video it. I have added a top chain guard because on heavy acceleration there was a lovely "Cracking" sound as the chain smacked the underside of the body> :lol:

Re: Scorpion 4x4 Build project

Posted: Mon May 15, 2017 1:21 am
by Mr. ED
I heard people removed a single link from the chain once it's run in on optimas bitd.

Re: Scorpion 4x4 Build project

Posted: Mon May 15, 2017 2:33 am
by Dadio
its really surprising how much difference a single link makes , i was lucky with my dogfighter not to need a tensioner but i do on this one .
i made up a couple of extra pulleys last night , a rear one on an adjustable mount that i'd already fitted but not used and another fitted to a servo horn that i can swing to add tension , i'll road test again tonight as it was late when i finished working last night .

Re: Scorpion 4x4 Build project

Posted: Mon May 15, 2017 3:35 am
by Lonestar
Dadio wrote: Sun May 14, 2017 3:13 pm Well i made a short video with the help of a friend but its not great quality , its a stills digi camera taking video , i have now got trouble with the chain tension so i need to make a tensioner , i guess as the chain has run in and stretched a little . Anyway it was no surprise and i always expected to need a tensioner
https://youtu.be/8Zch4oMkta4
That's REALLY cool - the 4wd side of it is obvious here, no stock scorpion could ever accelerate that hard and look that balanced!

Superb building job!

(and utterly crappy driving at 0:07 :lol: )

Re: Scorpion 4x4 Build project

Posted: Mon May 15, 2017 1:00 pm
by Coelacanth
Dadio wrote: Sun May 14, 2017 3:13 pm Well i made a short video with the help of a friend but its not great quality , its a stills digi camera taking video , i have now got trouble with the chain tension so i need to make a tensioner , i guess as the chain has run in and stretched a little . Anyway it was no surprise and i always expected to need a tensioner
https://youtu.be/8Zch4oMkta4
That's a pretty good test run. The way it drives reminds me of an Optima with that unmistakeable chain sound. 8)

Compare to this, with also utterly crappy driving, but I blame part of it on the wrong choice of tires for the gravel road: :P

https://youtu.be/7jv-2dYfyQQ

Re: Scorpion 4x4 Build project

Posted: Mon May 15, 2017 2:02 pm
by Dadio
The tensioner works well but I now have a glitchy ESC , it was one of those mega cheap 120a esc's off eBay that I had to hand , a better one is now coming , I still can't get over the wheelies it pulls , I thought with all the added weight up front it would not happen , I guess I need to release the slipper clutch a bit more .

Re: Scorpion 4x4 Build project

Posted: Mon May 15, 2017 2:18 pm
by Dadio
1300GT wrote: Sun May 14, 2017 10:49 pm Great build! 8)

I've been running mine to sort out any problems before I video it. I have added a top chain guard because on heavy acceleration there was a lovely "Cracking" sound as the chain smacked the underside of the body> :lol:
I still can't wait to see that car run , on any build like these there are always little things to sort out , some you expect and some are a surprise .
Later on I found that one of the 6mm flanged bearings in the trunions (king pin replacements) had broken , probably when I cartwheeled it in the video clip , I was kind of expecting that too but not the way it failed , I expected the race to break up but only the flange had sheared off leaving the bearing intact they were from a batch of cheap Chinese bearings I've had for ages and I've replaced with a better one so I'll see how long it lasts , I'm kind of planning on either going to 7mm bearings or making top arms , I really don't want top arms as it's just too big a visual change ..........
Still a work in progress I guess but at least I can now drive her again .