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    Re: Design Phases 3D model of frame
    #41
    Senior Member kustomfab2003's Avatar
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    I envy your ability... I am currently in the process of self teaching using TurboCad Pro Mac 11 on my Mac tower. It's fun, but time consuming. It's faster for me to use CAD (cardboard aided design) or with tubing PAD (PVC aided design).
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    Re: Design Phases 3D model of frame
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    Member 67StingrayJ's Avatar
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    This is my latest design. I feel like this one is a keeper but I have like 8 more that I'm contemplating. I want to know what you guys thing. Ask questions, make comments. Does the front look too short? Does it look like its got a big butt? Yes, I'm focusing on aesthetics, but with performance in mind. Performance first, aesthetics second.
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    Re: Design Phases 3D model of frame
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    The Wizard bdkw1's Avatar
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    I like most of it, the front is pretty ugly. It would look better without the ears sticking up. If you ran those tubes lower and just put shock mounts off of them it would improve the lines greatly.

    Having your A pillars more vertical than the last version is good also. With them as flat as they were with such a long unsupported span, they would crush down pretty easy in a roll. The Canned ham X3's have this issue.
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    Re: Design Phases 3D model of frame
    #44
    Senior Member kustomfab2003's Avatar
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    Those tall front rails are only necessary if you have tall shocks to mount... otherwise they just block your view. Just things to think about. You will want as much viewing area as possible. I am not a fan of the front wheels stick out past and type of bumper as they are the first thing to get clipped on something. That is just me, not a rule of any sorts. I am sure you will have some sort of a bumper that goes past the front wheels to a point.
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    Re: Design Phases 3D model of frame
    #45
    Member 67StingrayJ's Avatar
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    I was going after something that looks like this... But I agree, the front doesn't quite look right. The racer's name is Patrick Flanagan. Here is a video of his buggy too.

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    Re: Design Phases 3D model of frame
    #46
    Keeper of the Asylum K-fab's Avatar
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    Quote Originally Posted by kustomfab2003 View Post
    Those tall front rails are only necessary if you have tall shocks to mount... otherwise they just block your view. Just things to think about. You will want as much viewing area as possible.
    Agreed
    I am not a fan of the front wheels stick out past and type of bumper as they are the first thing to get clipped on something. That is just me, not a rule of any sorts. I am sure you will have some sort of a bumper that goes past the front wheels to a point.
    Bumpers are subjective...
    Something that goes out past the front wheels (like on my Mini-Raptor) doesn’t do squat other than hang out and attack a tire when it hits something. To have a bumper that can take a hit out at track width that actually protects the front suspension would require a massive structure that will damage the chassis when thumped.

    A stout front narrow bumper transfers the energy into the chassis and when you cut the bent frame rail to repair it, it whacks you in the thigh and you have to pick yourself up off of the shop floor. It’s impressive how much energy a bent piece of chromoly can hold and then release.

    I have yet to see anything that that actually protects the front suspension and I have seen more than one three wheeled cars because of it.

    Make the front bumper a sacrificial item that saves the chassis from a direct frontal hit.

    Most UTVs have a wheel leading setup. It allows you to drive up against objects and crawl over w/o something getting hung up.
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    Re: Design Phases 3D model of frame
    #47
    The Wizard bdkw1's Avatar
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    Quote Originally Posted by K-fab View Post
    Make the front bumper a sacrificial item that saves the chassis from a direct frontal hit.
    This^^^^^^^^^^^^

    Make the bumper out of the cheapest steel you have. Make it easy to replace. Bumpers are a wear item.
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    Re: Design Phases 3D model of frame
    #48
    Senior Member kustomfab2003's Avatar
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    Quote Originally Posted by K-fab View Post
    AgreedBumpers are subjective...Something that goes out past the front wheels (like on my Mini-Raptor) doesnít do squat other than hang out and attack a tire when it hits something. To have a bumper that can take a hit out at track width that actually protects the front suspension would require a massive structure that will damage the chassis when thumped.A stout front narrow bumper transfers the energy into the chassis and when you cut the bent frame rail to repair it, it whacks you in the thigh and you have to pick yourself up off of the shop floor. Itís impressive how much energy a bent piece of chromoly can hold and then release.I have yet to see anything that that actually protects the front suspension and I have seen more than one three wheeled cars because of it.Make the front bumper a sacrificial item that saves the chassis from a direct frontal hit.Most UTVs have a wheel leading setup. It allows you to drive up against objects and crawl over w/o something getting hung up.
    I do agree with you K-Fab... Just not a fan of it. The front wheels protruding past the front of the chassis serve many good purposes... I am used to fabricating for short course and baja style trucks, so things are a bit different in that arena. A crumple zone style bumper would serve best, especially in wooded areas where you might center punch a tree. There comes a point where, strong yet sacrificial become a necessity.
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    Re: Design Phases 3D model of frame
    #49
    Member 67StingrayJ's Avatar
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    All great input guys. I'm a structural engineer, but a Industrial Engineer as well. As I put on my Industrial Engineering hat on, I am forced to look at this project from a distant view but intimately when necessary. Think big, act precisely. With that being said, I want this thing to function nicely but also look good in doing so. Chances are I'll be looking at the thing in my garage more than I actually get out to drive it. If there is something about it that just looks off it's going to drive me crazy. It's like when I tiled my bathroom. Every time I go to take a sh.. I see this uneven grout line in the tile. It drives me absolutely nuts!

    SO, my takeaway is to make a sacrificial bumper that doesn't look like an afterthought. It makes sense. I think I'll make something that I can put on and take off with relative ease depending on if Im crawling or racing or cruising.

    I updated the nose up front to look better. see attached. Am I the only one that is in Love with the buggy in the video I attached? Does anyone have a favorite buggy as far as aesthetics are concerned?
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    Re: Design Phases 3D model of frame
    #50
    Keeper of the Asylum K-fab's Avatar
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    Aesthetically the best looking off road vehicle I've seen is the Chenowth Millennium (20 yr old car) but unfortunately it's suspension design sucked severely. The laid over shocks were too laid over and it blew through the suspension.

    The updated ACAD drawing looks better. It's impressive the number of designs that have come across this forum over the years that have the hooped out front idea like you originally started drawing - and I can't think of one that ended up being made that way (someone will now prove me wrong).
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