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Trucks
Scale truck modeling topics.
Hosted by Damian Rigby
Chevy Off-Road racers
Stickframe
#362
_VISITCOMMUNITY
California, United States
Joined: December 01, 2013
KitMaker: 1,254 posts
Auto Modeler: 67 posts
Posted: Tuesday, November 06, 2018 - 10:31 AM UTC
Hello fellow model builders,

I'm still moving on this truck. The rear end is almost done - I added the torsion bar to the sway bar arms and added mounts for the rear bump stops:





I'm not sure if I'll add remote shock reservoirs - they're hard to reach and see.

I added inner body panels and a well for two spares:





and finally - the chassis is about done -



There are odds and ends to add - including instrument cluster - and co-driver tracker/computer -

Cheers

Nick
Stickframe
#362
_VISITCOMMUNITY
California, United States
Joined: December 01, 2013
KitMaker: 1,254 posts
Auto Modeler: 67 posts
Posted: Monday, November 05, 2018 - 11:31 AM UTC
Hello gents -

I'm still working away on my Chevy truck. Over the weekend I focused on the rear end and chassis.

Before I get into my progress, below are four screen shots taken from a video showing the vertical movement of the rear axle of a trophy truck - which pretty clearly shows the vertical travel. It equally clearly illustrated how the swing arms, shocks/coils, links and panhards all move. The sequence is from dead stop,to accelerating, jumping, and landing.

OK, here we go:









You can see how the parts work together. I'm not sure if i'll add limiting straps, but will add the bump stops.

And below, where my version sits today:













And there you have it! There were more than a few surprises for me with progress so far. A few steps in the build took a long time and simply didn't look right during construction (the lack of benefit of not having a kit or plans lol) - yet, when all was said and done - I almost can't believe how square the rear end (suspension and chassis) turned out, and even more shocked to see how true the line of the roll bar from the roof to the tail is, considering it's segmented and not running in a straight line - wow! truly a surprise!

OK, thanks for having a look

Nick




Dixon66
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New Hampshire, United States
Joined: December 12, 2002
KitMaker: 748 posts
Auto Modeler: 61 posts
Posted: Thursday, November 01, 2018 - 09:54 AM UTC
What is funny is I'm going to be in Australia later this month. Sydney though, not Melbourne .

I'm familiar with BNL Resins, I'll see if I can get BNA to ship to my hotel so I can build the rock buggy I want to do.
Stickframe
#362
_VISITCOMMUNITY
California, United States
Joined: December 01, 2013
KitMaker: 1,254 posts
Auto Modeler: 67 posts
Posted: Thursday, November 01, 2018 - 08:12 AM UTC
Hi gents - thanks for taking some time to leave your comments, they're appreciated!

Thanks, Jim - I like building these, they require a fair amount of head scratching, and make an ideal distraction from work! lol -

Hi David, good eye on both! Yes, I like the tires and wheels! As for the rear end, its made by The Parts Box, and I ordered it from BNA Model World (Australia). If you want the parts in a hurry, you might check out BNL Resins, here in the USA - they make all sorts of interesting parts, including several rear ends.

Speaking of the axle - it's width exactly matches my homebuilt front end, which is a nice coincidence - but, that is wider that the factory axle, so, I needed to cut out and rework the rear fenders too....I also found that the drive/propeller shaft I'm using is a bit long, so, I'll cut it down:



Above, you can see the flared out fenders in the back. The tape with two marks, shows where the axle center line is now, and to the right, where I want it to be. Next, you can see how wide the axle is:



and finally, a couple of general pics -





OK, so,that's where it is - thanks for dropping by. I think I'll get going on the rear end -

Cheers

Nick
Dixon66
_VISITCOMMUNITY
New Hampshire, United States
Joined: December 12, 2002
KitMaker: 748 posts
Auto Modeler: 61 posts
Posted: Wednesday, October 31, 2018 - 11:58 AM UTC
Nice work, I see Fireball's MT/R Kevlars. Where did the 9" rear axle come from?
jimb
_VISITCOMMUNITY
New York, United States
Joined: August 25, 2006
KitMaker: 2,100 posts
Auto Modeler: 1,024 posts
Posted: Wednesday, October 31, 2018 - 08:27 AM UTC
A lot of work going into these. Great detailing.

Jim
Stickframe
#362
_VISITCOMMUNITY
California, United States
Joined: December 01, 2013
KitMaker: 1,254 posts
Auto Modeler: 67 posts
Posted: Wednesday, October 31, 2018 - 07:36 AM UTC
Hello model builders.

I'm still working on this truck. You'll see below, the front suspension is coming together:





Shocks/coilovers, reservoirs, and mounts/ball joints in place.

Next up, the rear end. While waiting for the axle to arrive, I worked on the framework for the shock/coil over chassis mounts. The rear sway arms will be mounted directly below, attaching to the axle. Please see below:





The marks on the axle are where I'll cut this down - there's a metal rod embedded in the resin, which I'll keep a segment of on each side of the diff. I'll then add layers of aluminum tubing to build the diameter up to what I want, and will add an integrated truss, connecting points for sway arms, links and panhards.

Thanks for having a look.

Nick



Stickframe
#362
_VISITCOMMUNITY
California, United States
Joined: December 01, 2013
KitMaker: 1,254 posts
Auto Modeler: 67 posts
Posted: Friday, October 26, 2018 - 08:09 AM UTC
Hi fellow model builders,

over the summer I built a couple of 1/25 trucks and have another underway. I've built a few of these type trucks in the past, and finally think I have a system in place - this is relevant because the trucks are largely scratch built. I keep the body from a kit, and if available, the cab tub and firewall.

Below you'll see one truck that's built following these criteria, which in real life is called a "trophy" truck. The first picture shows a prototype, followed by my version - using an oldish Chevy body (early/mid 90's).

The next project, just for fun, is a 1970 Ford F100 4x4 I built into a chase truck. It received a utility body, 4" lift kit, dual shocks up front, and a cantilever rear end. The bar out the rear is for storing multiple spare tires.

Finally, you'll see the current project - I couldn't believe it!! I found a 1/25 scale, nice quality, plastic model of a 2016 Chevy! So, yes, i decided I needed one more trophy truck!

This is the prototype:







and mine:



The rear ends on these have lots of travel - are generally a four link with panhards, shocks and coilovers. And with some paint:







Next up, the chase truck:







And with some (mediocre!!) paint:







And now, the current project - first pic shows the 2016 out of the box, and the chase truck...don't worry, it gets changed:



the yellow tape is my guide for cutting the cab down. As this truck model has no interior or engine/trans, I needed to make one - just to get going:





And below is where it sits as of this morning:







Now that I've built a few of these, I have gotten better with the front suspension - it steers, but does not go up an down. Just getting the spindles to look right, steer, and fit to convincing control arms has taken me a few builds to get resolved. It't hardly perfect, but I like it more now than on the last few.





The last few show the body work - and yes, more putty needed - photos do show the flaws nicely - lol - and you can see a bit more of the cab cage -

I'm waiting for a rear axle - ordered a resin one from BNA, which is pretty far from me!

thanks for having a look

cheers

Nick