This is a tad out of my league so I am asking for help. A friend is looking at building a SnowCat and wants some info on auto trans gear ratios. This will be used to drive a hydraulic pump to supply power to tracks.
Can one of the 4age experts point me toward a link on required info. Does not have to be AW specific as can use components from other cars. Even if there is a better engine/trans platform offer some suggestions. This is at a design stage with no definitive time or budget.
Thanks for input.
4age Auto gear ratio- SnowCat Build
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This area is dedicated to technical discussions concerning AW10's and AW11's. Please try to spell correctly because this will help people find information later if they are using search functionality. If you need assistance with your car and want to host a spanner day, please use the appropriate section of the forum: http://mr2.org.nz/phpbb3/viewforum.php?f=35 Thank you.
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4age Auto gear ratio- SnowCat Build
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Re: 4age Auto gear ratio- SnowCat Build
Not really sure what you mean by auto trans gear ratios Jim but do these specs from the BGB help?
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Retired - President 2012 - 2018
Retired - Committee Member 2009 - 2018
Retired - Auckland Area Coordinator 2009 - 2018
Retired - Webmaster, Forum Host & Admin 2010 - 2018 - Now it's mknz
Financial Club Member since 2004 and thanks to *84vvt and co-conspirators, Life Member since April 2017
100+ MR2OCNZ runs and counting... When going hard, good rubber's your best protection against unwanted accidents. Buy good tyres!
When you're nearing the end of the drag-strip and you have no 'chute, you may as well keep your foot to the floor... Live life. There ain't no second pass.
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Re: 4age Auto gear ratio- SnowCat Build
Thanks Charlie, I think that will work fine.
Jim
Jim
Jim Benck
90 rev 1 parts car
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Re: 4age Auto gear ratio- SnowCat Build
I've previously worked a few months at an automatic transmission rebuild shop. There is quite a lot involved in getting everything to work properly. The biggest problem here is finding an ECU to match.
Current:
1989 V6 Widebody SW
1996 EK Civic Hatch
2007 BMW 335i Touring
1989 V6 Widebody SW
1996 EK Civic Hatch
2007 BMW 335i Touring
- Benckj
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Re: 4age Auto gear ratio- SnowCat Build
What does the ECU control with the auto trans that makes it difficult to use for an application like this?
Jim Benck
90 rev 1 parts car
98 rev 5 GT- all the mods
90 rev 1 parts car
98 rev 5 GT- all the mods
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Re: 4age Auto gear ratio- SnowCat Build
On factory applications, there is either a seperate trans ECU or a all in one. This controls under what conditions different things happen in the valve body. The oil pressures are what ultimately decides what band gets engaged and subsequently which gear. As with anything, it's doable but just a matter of skillset, money, and timeBenckj wrote:What does the ECU control with the auto trans that makes it difficult to use for an application like this?
Current:
1989 V6 Widebody SW
1996 EK Civic Hatch
2007 BMW 335i Touring
1989 V6 Widebody SW
1996 EK Civic Hatch
2007 BMW 335i Touring
- Benckj
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Re: 4age Auto gear ratio- SnowCat Build
Ok, I’ll pass all this info over to my friend. He has his own Engineering business and has built many cars although specialises in diesels. He is at the research stage just now so looking at best engine drivetrain platform before design starts.
Jim Benck
90 rev 1 parts car
98 rev 5 GT- all the mods
90 rev 1 parts car
98 rev 5 GT- all the mods