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Old 04-10-2012, 03:47 PM
EastCoast EastCoast is offline
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Default VW mid engine Trike frame

I am wanting to build a vw med engine trike frame. I don't have the motor and tranny yet but I wanted to start with the frame first. Can anyone help me out with measurements and tube size? Pics and or blueprints?
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Old 04-20-2012, 08:07 AM
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by vw do you mean volks wagon? because i have a running vw engine and transmission,i think its like a 67',i think...for sale

Last edited by matman55; 04-20-2012 at 08:46 AM. Reason: woops
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Old 04-20-2012, 08:11 AM
Jake.B Jake.B is offline
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Just my 2 cents, i would get your engine first so you can build around it. If you build your frame and then realize somthing wrong in mesurements or whatever you dont have to redo.
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Old 04-20-2012, 08:41 AM
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Best thing you could do is take the hole drive system from a vw. Engine, Trans, and Rear Axle. Connect the Trans to the Axle without the drive shaft, just the U-V joints. It will be a challenge to put it together but will shorten it up. Then you can start building from the rear axle. Once you can get a frame started, then raise up the rear end and try the Drive setup, it should work perfectly fine.
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Old 04-20-2012, 04:02 PM
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Quote:
Originally Posted by matman55 View Post
by vw do you mean volks wagon?
Yup I do

I want to build some like the frame on BadAss Trikes.

http://badasstrikecompany.webs.com/badasstrikestore.htm

I like this bike the best but not the color.

http://badasstrikecompany.webs.com/a...hotoid=1249411
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Old 04-20-2012, 07:23 PM
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Quote:
Originally Posted by klicky96 View Post
Best thing you could do is take the hole drive system from a vw. Engine, Trans, and Rear Axle. Connect the Trans to the Axle without the drive shaft, just the U-V joints. It will be a challenge to put it together but will shorten it up.
It would appear that you're not familiar with the classic VW driveline. Gearbox is a transaxle- there is no "taking out the driveshaft to shorten it" A half-shaft protrudes directly out of each side of the transaxle- those are your axleshafts. There is no driveshaft.
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Old 04-20-2012, 07:31 PM
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Quote:
Originally Posted by toystory_4wd View Post
It would appear that you're not familiar with the classic VW driveline. Gearbox is a transaxle- there is no "taking out the driveshaft to shorten it" A half-shaft protrudes directly out of each side of the transaxle- those are your axleshafts. There is no driveshaft.
Really? Wow, i'm surprised they would hold up like that really. I wouldn't have thought that. I was just thinking about the way my buddy did his trike from an old ford. With his, he used the rear of the frame and built around it.
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Old 04-20-2012, 07:49 PM
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Bear in mind that the old Veedub's were rear-engine, rear-wheel-drive. (AND fan-cooled). You should research them- very interesting to be sure.
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Old 04-20-2012, 07:54 PM
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Ya know, after thinking about it, I don't understand how i could mess that up. I don't work on VW's though.
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Old 04-20-2012, 07:58 PM
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Neither do I- But I suspect that I'm a wee bit older than you And we're NOT going any further with THAT topic!
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Old 04-20-2012, 09:20 PM
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Lol yeah. I may be only 15, but I've done my share in my few years ha.
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Old 04-24-2012, 12:57 PM
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I have been trying to get a motor and tranny. looking at a few.
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Old 04-30-2012, 11:12 AM
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This kinda like what you want to do?
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Old 04-30-2012, 02:27 PM
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Hmm, after looking at the badasstrikes website - that's a very interesting approach, and seems to be well-thought-out. I like the idea of having the engine forward of the rear axle, it always seemed to me that the traditional vw=-powered trikes (like the pic above) were just too unbalanced and light at the front.

They're turning the VW engine around backwards, running power through a gutted gearbox via an extension shaft, then into a backwards-mounted tranny. What I can't figure out is: how are they getting the tranny to spin the correct direction?

All that aside, I'm thinking that it's very much an advanced-type diy project, where you'd best be very careful with your build. A VW engine in a lightweight frame would easily go fast enough to do some SERIOUS bodily harm if something came apart.
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Old 04-30-2012, 02:36 PM
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I wonder if they flip the tranny upside down instead of spinning it around left/right front/back. That would keep it turning the right directions, but might raise heck with lube...

EDIT: After a bit of googling, I've learned that in a VW transaxle you can flip the differential ring gear over to the other side of the input pinion, reversing the final drive's direction. Amazing!
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Old 04-30-2012, 09:07 PM
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yup me and my brother just built a mid engined buggy. we just flipped the diff ring gear carrier to the other side and thats all there is to it. Youll be better off with an older swing axle tranny rather than the newer more common cv style irs suspention. With the swing axles all you need to do is build trailing arms and use coil over shocks and its done. you wont be able to use the vw tortion tube anyway because its mid engined.
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Old 04-30-2012, 09:37 PM
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Way cool! How you going to do the gear-shift mechanism?
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Old 05-10-2012, 10:00 AM
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Would like to see more pic and info and pics on the shifter
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Old 05-10-2012, 05:14 PM
porsche930dude porsche930dude is offline
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the gear shift is as simple as it looks. thats a little u-joint at the back and another one is hiding just behind the axle. from there on forward to the shifter its just a rod in a tube. the shifter is just an old tie rod end with a tab welded on that the rod bolts to. its a little sloppy but its the same pattern as the original vw setup and works just fine. ill try and get some better pics for you
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Old 05-11-2012, 06:08 PM
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heres some pics. as you can see its just a series of shafts and u-joints to route it around the engine. the shifter alolws it to push in and out while rotating it to the desired gear. there are 3 u joints in total . easy


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