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04-14-2015, 09:24 AM | #1 |
Rock Stacker Join Date: Jan 2013 Location: loveland
Posts: 69
| twin I beam prerunner 79 f250
I see quite a few trophy trucks on here so here's mine. It's getting closer to done so I'll try and catch you guys up real quick. For more details here's the build thread from the beginning 2015 desert build off.. '79 f-250 - RCShortCourse It's tig welded 3/16 solid rod for the most part. I built the twin I beam front suspension and I am using wraith knuckles that pivot off of tapped king pins made of 1/4 rod |
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04-14-2015, 09:26 AM | #2 |
Rock Stacker Join Date: Jan 2013 Location: loveland
Posts: 69
| Re: twin I beam prerunner 79 f250
The chassis/ truck cab is more prerunner or weekend toy styled rather than trophy truck. It'll have a full interior. The center consul/ tunnel houses the motor and trans.
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04-14-2015, 09:29 AM | #3 |
Rock Stacker Join Date: Jan 2013 Location: loveland
Posts: 69
| Re: twin I beam prerunner 79 f250
Here's a couple pics
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04-14-2015, 09:34 AM | #4 |
Rock Stacker Join Date: Jan 2013 Location: loveland
Posts: 69
| Re: twin I beam prerunner 79 f250
The rear axle is a wraith axle. Mocked up with wraith trailing arms but I'll be building my own trailing arms and upper links. The and is flipped to achieve a better drive line angle. I'm using a exo trans because I'd it's size and simplicity
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04-14-2015, 09:38 AM | #5 |
Rock Stacker Join Date: Jan 2013 Location: loveland
Posts: 69
| Re: twin I beam prerunner 79 f250
And Most recently I've mocked up the swing steering. I'll be making more permanent links and a servo mount very soon.
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04-14-2015, 11:56 AM | #6 |
Rock Crawler Join Date: May 2007 Location: Salt Lake City
Posts: 977
| Re: twin I beam prerunner 79 f250
Love it! Good job.
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04-14-2015, 07:34 PM | #7 |
Rock Crawler Join Date: May 2013 Location: Dallas
Posts: 680
| Re: twin I beam prerunner 79 f250
Having a slight problem with the forum, it's only letting me press the like button once.
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04-14-2015, 08:00 PM | #8 |
Rock Crawler Join Date: Feb 2014 Location: ?
Posts: 747
| Re: twin I beam prerunner 79 f250 |
04-14-2015, 10:28 PM | #9 |
Quarry Creeper Join Date: Apr 2014 Location: a land bereft of rocks
Posts: 366
| Re: twin I beam prerunner 79 f250
does it get the full range of steering with that setup?
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04-15-2015, 05:28 AM | #10 |
Rock Stacker Join Date: Jan 2013 Location: loveland
Posts: 69
| Re: twin I beam prerunner 79 f250
Thanks everyone! Yes it does get full range of steering. I'll post a video of the steering once the servo is installed
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04-15-2015, 07:24 AM | #11 |
Rock Crawler Join Date: Feb 2011 Location: Spur, TX
Posts: 541
| Re: twin I beam prerunner 79 f250
I like that steering setup, and the truck's looking great! With the way the upper links are angled, I'm assuming it'll act as an ackerman steering setup? (Meaning the when turning the inner wheel turns sharper?) Or is it an equal throw setup? |
04-15-2015, 08:20 AM | #12 |
Rock Stacker Join Date: Nov 2010 Location: JAPAN
Posts: 60
| Re: twin I beam prerunner 79 f250
Love the build this thing is bad a$$. just one question do you think the radius arms will need some kind of pivot points where they meet the control arm? and im subscribed |
04-15-2015, 08:47 AM | #13 |
Rock Stacker Join Date: Jan 2013 Location: loveland
Posts: 69
| Re: twin I beam prerunner 79 f250 The tie rods both throw equally. Ackerman is related to the tie rod attachment points on the knuckles in relation to the width and wheelbase of the truck. This set up has a little Ackerman I believe. I'll double check when I get home. The best part of this steering tho is I have no bump steer through out the travel.
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04-15-2015, 08:54 AM | #14 | |
Rock Stacker Join Date: Jan 2013 Location: loveland
Posts: 69
| Re: twin I beam prerunner 79 f250 Quote:
Thanks again for your compliments guys. This front suspension and steering set up is the reason I'm building this. I wanted to see if I could replicate the 1:1 setup and have it function as well. But mostly because it looks sick as f**k!! | |
04-15-2015, 04:54 PM | #15 |
Rock Crawler Join Date: May 2013 Location: Dallas
Posts: 680
| Re: twin I beam prerunner 79 f250 |
04-15-2015, 10:04 PM | #16 |
Newbie Join Date: Oct 2014 Location: Beaver Crossing
Posts: 21
| Re: twin I beam prerunner 79 f250
absolutely epic, did you have a particular inspiration or is this a homebrew design?
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04-15-2015, 11:14 PM | #17 |
PapaGriz Yo Join Date: Apr 2004 Location: In the garage building the wife a crawler
Posts: 13,137
| Re: twin I beam prerunner 79 f250
Great fab work man. I love it! Last edited by Grizzly4x4; 04-16-2015 at 09:18 AM. |
04-16-2015, 07:28 AM | #18 |
Rock Stacker Join Date: Jan 2013 Location: loveland
Posts: 69
| Re: twin I beam prerunner 79 f250
Thanks guys. I built this piece by piece from a design I had in my head. It's my first custom build and I'll tell you next time I will plan it out better! At least some detailed drawings. I'm happy with the out come so far but I see where the wood dowel mock up and stuff would help out greatly.
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04-16-2015, 09:14 PM | #19 |
Rock Stacker Join Date: Jan 2013 Location: loveland
Posts: 69
| Re: twin I beam prerunner 79 f250
Steering is complete! Servo mount made and new links done!
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04-16-2015, 09:16 PM | #20 |
Rock Stacker Join Date: Jan 2013 Location: loveland
Posts: 69
| Re: twin I beam prerunner 79 f250
Here's a video. It's a little sloppy. The plastic knuckles I'm using for mock up are worn and there's no bushings in one. The screw's are poked thru but no bolts on the back but it shows how it works. Twin I beam swing steering Rc test: https://youtu.be/lrujndmsdCU |
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