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Thread: VFD Capra...Can I Still Call It A Capra?

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Old 10-24-2020, 12:55 PM   #41
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Default Re: VFD Capra...Can I Still Call It A Capra?

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Originally Posted by Fricker08 View Post
Hey looking good man! That’s pretty wild and impressive. Hope you find someone to route that carbon fiber. I’ve been waiting over a month for my chassis from Procrawler out of Hungary because the place that was doing their work told them to pound sand. Granted it’s FR4 but I think probably close on properties.
Looking forward to seeing how this version works out for you


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Thanks! That's too bad about your chassis. Hopefully they will find another company to get the work done. I'm also looking forward to seeing how your build turns out. It's been one of my favorites on here.
No luck with the carbon fiber but there's a member here (JSterrett) that may be able to cut the rails out of aluminum for me. It will be a bit heavier but at this point that's not really a concern. We'll see.

Last edited by mjensen; 10-24-2020 at 12:57 PM.
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Old 10-24-2020, 02:30 PM   #42
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Default Re: VFD Capra...Can I Still Call It A Capra?

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Thanks! I had a set of aluminum rails that I hand cut out of 1/8" 6061 in one of my first designs. There's a picture of them back on the first page sitting on top of my box of rejected parts. They worked fine and were plenty strong but it was a lot of work to cut them so when I changed the design I decided to try the 3d printing route. I decided to go with 3mm carbon fiber for this latest design since while the 3d printed rails were quite stiff I question their durability. Plus I figured the carbon would be easier to hand cut and machine than the aluminum. It wasn't and it was also almost 3 times as expensive as the 6061.

I'm not set on the carbon and I think aluminum would work just fine. Maybe I could send you a copy of the design file, (not sure what file format you'd need, .step, .stl?) and you could tell me any changes to things like radius, hole sizes would be needed and give me an estimate of what it might cost, materials, labor, etc to make the rails out of 3mm or 1/8" 6061.
dxf would be easiest, or step. I'll need to buy some 3mm aluminum, as I don't have access to that thickness at work, but I have some other projects that need 3mm as well, so cost to you should be minimal.

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Old 10-24-2020, 03:49 PM   #43
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Default Re: VFD Capra...Can I Still Call It A Capra?

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dxf would be easiest, or step. I'll need to buy some 3mm aluminum, as I don't have access to that thickness at work, but I have some other projects that need 3mm as well, so cost to you should be minimal.

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I can convert the file to .dxf without a problem. Hopefully the dimensions being metric won't be an issue. I tried to change the design to make it easier to cut. I've removed all the countersinks from the holes as I have a drill press. This should simplify things a bit. I've also made all the holes 3mm but in the event you don't have metric tooling 1/8" should be close enough. I've also made sure all the inside corners have a radius of at least 2mm. If there's anything else you think you might need let me know.
I've never used the private message thing here so I don't know if I can send a file with it. If not I'll send you my email address and go from there.
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Old 10-24-2020, 05:09 PM   #44
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Default Re: VFD Capra...Can I Still Call It A Capra?

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I can convert the file to .dxf without a problem. Hopefully the dimensions being metric won't be an issue. I tried to change the design to make it easier to cut. I've removed all the countersinks from the holes as I have a drill press. This should simplify things a bit. I've also made all the holes 3mm but in the event you don't have metric tooling 1/8" should be close enough. I've also made sure all the inside corners have a radius of at least 2mm. If there's anything else you think you might need let me know.
I've never used the private message thing here so I don't know if I can send a file with it. If not I'll send you my email address and go from there.
Yeah, just shoot me a PM with your email.

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Old 10-26-2020, 01:22 PM   #45
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Default Re: VFD Capra...Can I Still Call It A Capra?

I got the Capra cage trimmed this morning and it fit surprisingly well. It still needs some tweeks, the 3d printed parts need some paint, and I need to redo the body panels but this is basically what the finished Capra will look like.
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Old 11-09-2020, 05:42 PM   #46
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Default Re: VFD Capra...Can I Still Call It A Capra?

A quick update. I had hoped to have some progress this past week. Unfortunately life got in the way but I want to thank JSterrett, a member here who, in spite on my ineptitude in figuring out how to send Fusion360 files, managed to cut me a great set of aluminum rails for the Capra. They look so good that it's really a shame that once the Capra is put together they won't be seen. I'm hoping to get them installed this week and finally get this project wrapped up.
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Old 11-09-2020, 06:23 PM   #47
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Default Re: VFD Capra...Can I Still Call It A Capra?

You know you're doing things right when your end product looks more "factory produced" than the original, factory produced, product. I'm looking forward to hearing how this performs, it looks very well thought out. Keep up the good work!
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Old 11-09-2020, 07:45 PM   #48
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You know you're doing things right when your end product looks more "factory produced" than the original, factory produced, product. I'm looking forward to hearing how this performs, it looks very well thought out. Keep up the good work!

I really appreciate the compliment but you're giving me far too much credit. This whole project has been a perfect example of someone getting in way over their head with something they (me) knew nothing about. I didn't even have a 3D printer when I started and knew nothing about them. Same for the CAD program, Fusion360. If this thing looks in any way professional it's a complete coincidence. Same for if it actually works. In the end it really doesn't matter because I've had a lot of fun working on it. Should it be a failure I've got a lot of nice parts I can put on something designed by someone that actually knew what they were doing.
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Old 11-21-2020, 10:11 AM   #49
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Default Re: VFD Capra...Can I Still Call It A Capra?

A quick update. I got all the mechanical things put together on the new rails. I debated about painting the rails to match the cage and in the end decided it looked better that way. Unfortunately the new body panels I ordered took some time to arrive so since I don't have a heated place to paint I wasn't able to paint them. In the end I took the body panels and interior off my other Capra so I could see how the truck was going to look. Now I just need to get the electronics installed.
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Old 11-21-2020, 11:12 AM   #50
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Default Re: VFD Capra...Can I Still Call It A Capra?

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A quick update. I got all the mechanical things put together on the new rails. I debated about painting the rails to match the cage and in the end decided it looked better that way. Unfortunately the new body panels I ordered took some time to arrive so since I don't have a heated place to paint I wasn't able to paint them. In the end I took the body panels and interior off my other Capra so I could see how the truck was going to look. Now I just need to get the electronics installed.
Very nice. Glad the rails worked out!

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Old 11-21-2020, 02:23 PM   #51
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Default Re: VFD Capra...Can I Still Call It A Capra?

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Very nice. Glad the rails worked out!

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Thanks again for making the rails. They fit perfectly.
If there's ever anything I can do to help you out please let me know!
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Old 11-22-2020, 07:57 AM   #52
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Default Re: VFD Capra...Can I Still Call It A Capra?

That looks killer!
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Old 11-22-2020, 03:55 PM   #53
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That looks killer!

Thanks! I'm pretty happy with the way it looks but how it will drive, who knows. I managed to keep the Capra cage mostly intact so it still looks like a Capra which is what drew me to it in the first place and I made it easier to get to the mechanicals to work on, the biggest issue I had with the stock Capra. I'll admit, the VFD transmission was largely an impulse buy, I thought it looked like a neat system. It turned out to be a pain to actually get into the truck and have the clearances needed for links and the front drive shaft. I almost scrapped the idea a couple of times while I was trying to work things out. Eventually it worked out but it remains to be seen if it was worth the effort.

Anyway, I'm working on the electronics tonight and if the snow holds off I might actually be able to get it outside for a test drive this week.
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