JoelP
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| posted on 29/3/05 at 10:25 PM |
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sj410 transfer box Qs
this transfer box in the photo, does anyone know anything about them? its off a suzuki.
basically, mi wondering if it has just one input and one output (probably not), could other outputs be welded up (like a locked diff?), and do the two
flanges at the bottom turn in opposite directions, and is the ratio between them 1:1?! only a few simple questions...
im hoping to find an off the shelf transfer box that i can use to reverse the spin of a bike engine facing the wrong way. this one look the part size
wise, but i need some details on the internals.
any help much appreciated!
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Hellfire
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| posted on 29/3/05 at 10:32 PM |
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Joel - WTF you up to?
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locost_bryan
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| posted on 30/3/05 at 12:18 AM |
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The transfer box off the baby Suzuki 4wd's provides the hi-lo ratios. Both ratios are indirect (i.e. not 1:1).
There is one feed in, and two feeds out (one front, one rear).
So the output shaft rotates in the same direction as the input shaft.
It won't make a reversing box (but could give you a 12-speed BEC) 
[Edited on 30-3-05 by locost_bryan]
Bryan Miller
Auckland NZ
Bruce McLaren - "Where's my F1 car?"
John Cooper - "In that rack of tubes, son"
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chrism
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| posted on 30/3/05 at 06:01 PM |
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From what I've seen of them they have three gear options.
2 Wheel Drive High ratio (Rear Wheels I think)
4 Wheel Drive High ratio
4 Wheel Drive Low ratio.
They are usually attached to the back of the gearbox so the side which has two drives has the power in and the front drive out and the other side has
the rear drive out.
Ratios from this site http://www.pavementsucks.com/forums/viewtopic.php?topic=38262
given as
1.58:1 high gear
2.5:1 Low Gear
[Edited on 30/3/05 by chrism]
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A little hard work never killed anyone, but why take the risk!
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stevebubs
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| posted on 30/3/05 at 06:06 PM |
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Joel,
Surely a Quaife / Westfield etc BEC reversing box will do the trick?
Sounds like you twin-engined job is getting a little complex...
S
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britishtrident
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| posted on 30/3/05 at 07:04 PM |
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I see what you mean --- but unless Suzuki transfer boxes have change since I last drove one it is a plain 2wd/4wd not permanent/locked 4wd with
a diff like the Rangey ie it has no centre diif just a simple dog clutch to engage the front drive shaft.
[Edited on 30/3/05 by britishtrident]
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JoelP
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| posted on 30/3/05 at 08:19 PM |
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bastard computer lost my post curses...
anyway, thanks for all your responses - steve is right, this is in relation to my planned next car, a twin engined BEC. this box is needed to reverse
the direction of spin of one of the engines, which is facing the wrong way.
if it comes to it, i'll make a box, but id rather avoid wasting time working out gearings and oil pumps etc...
its the top box on this picture:
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Liam
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| posted on 30/3/05 at 08:50 PM |
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This is a cool layout a mate of mine has been playing with (except for a 4wd in his case - the two engines drive a tube which is connected to a diff
centre. Output of this then goes back through the tube to the front diff, and back to the rear diff).
Anyway - one engine drives via a short chain as you have drawn, but the other drives with two meshed gears, hence it's direction is reversed.
Of course the two engines and the 'drive tube' (or shaft in your case) have to be solid with respect to each other on some kind of
subframe to keep the gears in mesh and the chain tight. Do-able and very cool.
Liam
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Liam
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| posted on 30/3/05 at 08:53 PM |
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Oh - that's sort of what you've drawn anyway! Shouldn't require much to to the two gears at all - some off the shelf gears,
bearings, shaft and ally plate to make a house that holds some oil.
Liam
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JoelP
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| posted on 30/3/05 at 09:38 PM |
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quote:
Originally posted by Liam
Shouldn't require much to to the two gears at all - some off the shelf gears, bearings, shaft and ally plate to make a house that holds some
oil.
Liam
thats what i have in mind! but it is, in all honesty, a bit beyond me. i cant even tap threads!!!! maybe i need to just jump in.
One of the twin becs i read about needed an oil cooler on its transfer box - maybe i'll just stick to cooling vanes, and a fan!
do ya think that an oil pump is needed of could you get away with just having it splashing?
cheers.
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stevebubs
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| posted on 30/3/05 at 09:47 PM |
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Yes - the Z-Cars/Tiger Gearboxes took an awful lot of fettling to get them "Reliable".
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flyingkiwi
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| posted on 31/3/05 at 08:31 AM |
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I wound't bother with a suzuki t/box, even if it did work, I shattered two of them in my old sj as they don't like too much power.
Considering the engines only a 1300 (or 970cc) putting anything greater through just wrecks them.
Thats my next project when I finish the locost. High powered sj based 4x4. Should be fun!
It Runs!!!!! Bring on the SVA!
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andkilde
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| posted on 31/3/05 at 12:01 PM |
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Hmmn...
Couldn't you flip the diff over to reverse rotation? You'd have to relocate the vent and it might whine a bit but it seems far simpler
than adding extra gearboxes.
Cheers, Ted
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locost_bryan
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| posted on 31/3/05 at 10:03 PM |
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quote:
Originally posted by flyingkiwi
they don't like too much power. Considering the engines only a 1300 putting anything greater through just wrecks them.
How do the SJ413 gearboxes cope? Are they stronger than the transfer cases?
I'm quite keen to use the Suzuki motor (74hp) and box (and possibly the diff off the current Carry van) in my locost (for their light weight) -
afaik the same motor/box is used in the SJ413/Samurai/Carry.
The Jimny has the new euro-IV M13A vvt motor (83hp) with the same gearbox (afaik) - might be able to bolt in the 111hp M15A from the Ignis Sport or
the 123hp M18A from the Liana (or the 204hp Ignis Super 1600 Rally  )
Hopefully Suzuki use the same bolt pattern on all M engines - they did on the G engines (except for two extra bolts on the G16A for the bigger Vitara
gearbox - easy to weld "ears" to the SJ box to match )
[Edited on 31-3-05 by locost_bryan]
Bryan Miller
Auckland NZ
Bruce McLaren - "Where's my F1 car?"
John Cooper - "In that rack of tubes, son"
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MikeRJ
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| posted on 31/3/05 at 10:44 PM |
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quote:
Originally posted by andkilde
Hmmn...
Couldn't you flip the diff over to reverse rotation? You'd have to relocate the vent and it might whine a bit but it seems far simpler
than adding extra gearboxes.
Cheers, Ted
But dosen't actually solve the problem of linking the two engines together! 
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