By Chris Brown (Eightball) on Unrecorded Date: Edit

Hello,
I have gotten plans from the Edge for the 6x6. And, I am preparing to build it. But, for the drive system I have come up with something. Use a horizontal engine, connected to a hydrualic pump, then connected to two hydrualic motors. Thus giving me independent control of each side. But, would this be a good alternative rather than a car diff? And, I estimate about 20-25 mph on land, is this as fast as other 6x6s? I dont want to be left in the dust. Is this a good idea? Do you guys have any comments? Please help me.
Thanks,
Chris

By Attex Bob on Unrecorded Date: Edit

Chris: There is 3 or more problems with a juice rig. 1. Expense 2. Power loss 3. Heat. Every one of these problems can be delt with in one way or another. You are going to have big losses with a juice system. To make up for these losses you are going to have to have some big HP. That is why juice rigs don't break any speed records. The heat deal can be good or bad depending on if it is summer or winter. Can you do it, you bet. But you better have a big wallet, hydro stuff is not cheap, and if you make one mistake in your math it will cost you dearly. I'm not a fan of hydrualic's for these things because it kills too much HP, (and costs waaaay too much) but if you have a background in it, and don't want to go too fast; go for it. Good luck, and I hope it turns out ok for you.

By Eugene Kochnieff on Unrecorded Date: Edit

Hi Chris,

I have to some what dissagree with attex bob about fluid power.

Yes it is expensive but you get what you pay for.

The power loss this is where i think we differ most, hydraulics can be lossy but when well designed they are very close to fully mechanical drive. The losses arise when people expect a hydralic system to replace a CVT!!!!

With an engine mated to the right pump/motors/controls you will get a very efficient system but only at one speed. so this is why hydraulics are used so much in earth moving gear. That and resistance to dirt water etc. I think for a recreational AATV hydraulics may be not flexible enough. I have looked into the various drives and think there are two I would use Best over-all the differential/intergral drives as used in tanks and recently in ODG Centaurs, but for cheap and cheery a T20 is hard to beat ( see fred i am fair)! How to get the drive from the transmission to the wheels 6 or 8 is the actual problem to be solved. Chains are no problemm if fully enclosed and run in oil eg timing chains on cars and drive chains in many 4x4 transfer cases. So IMHO i would take your choice of transmission and use a shaft drive into a sealed chain box like on the bogey drives on the back of road graders. This will allow the use of tooth chain as well which is very much stronger and streches far less.

By Chris Brown (Eightball) on Unrecorded Date: Edit

Ok, thanks for the info. But, how much would a T-20 cost me? Or, what about a tranny out of a garden tractor? Connected with a centrifucal clutch to get it to go faster??I am reviewing my options before I get in over my head and do something wrong. About the chains, how could I seal them, and with what kind of oil? I would still like to get in there and service them, every once and a while. What other kinds of chains are there for the 6x6?
Thanks Alot,
Chris

By Chris Brown (Eightball) on Unrecorded Date: Edit

Any body, please??
Thanks,
Chris

By devulla on Unrecorded Date: Edit

hello
am loking for web site helping me to lairn more hydrualic online by diagram and detail explaining

By Big Wolf on Unrecorded Date: Edit

If you are looking for books and literature on hydraulics application and design theory, try dooing some different searches over on google. You can also try checking with some of the major hydraulic component and systems manufacturers on their web sites.

The major brand name industrial hydraulic component supplier that I am familiar with are Rexroth, Bosch, Vickers, Sunstrand, and there are many others also. They may have some theory stuff in their technical information sections.

Most of these comapanies do offer technical training classes on hydraulic thoery and applications. They may even have some basic training manuals and interactiuve type training videos.

You can also try checking with the local library, although their material may be a bit out dated as compared to the component manufacturers.

If you work for any of the major automotive manufacturers, they generally have some form of technical training programs for most all the major trades including hydraulics training classes.