LiveForMud
Posts: 706
Joined: 1/7/2007
Status: offline
|
updating this thread to match achat... copy and paste:
(this is kinda long)
there's a couple things i didn't know beforehand, but saw in some pictures and it made something click in my head. the older 400 had 3 shifting mechanisms... the reverse lever, the foot shifter, and the range shifter down by your foot. the newer one just has the foot shifter and the range/rev lever.
got some pictures to kinda help things out... snatched these from e-bay:
2006 400M:
(See Picture 1 below)
(See Picture 2 below)
2001 400M:
(See Picture 3 below)
(See Picture 4 below)
now i'm left wondering... before, you could make the subtrans stay in high or low, and shift gears or select reverse independently. now they have removed the dedicated range selector and force you to select the range and reverse in one shot. if you look at Fig. 21 above, parts# 1, 2, and 4 are your range gears. part# 1 is a combination gear that acts like a countershaft. the smaller gear on part# 1, and part# 2 acting as your low range reduction gearset (2.435:1, little gear turning big gear = reduction). the bigger gear on part# 1, and part# 4 act together to make your high range reduction (1.296:1). and that little collar, or "dog gear" called part# 5, is what you're moving when you select high or low range... all it does is lock the high or low driven gear (part# 2 or 4) to the main shaft so as part# 1 is turned by the countershaft, you get the range you want.
on the newer 400s you don't have this choice... when you pull that lever into reverse, i'm assuming the shift cam(s) are set to select the high range reduction gearset in the subtrans (shift part# 5 over to engage part# 2) the problem is, i don't know if the parts i outlined above will force this thing into low range or not. so answer me this, on the newer 400Ms, does the lever shift pattern run something like L-H-N-R, front to back? if it does, then it's just keeping the high range reduction gears engaged all the time until you place the lever in low range. but i'm willing to bet there is a way to modify the shift cams to where it selects the low range reduction gearset when you pull it into reverse.
Time for some gear ratios:
2004+ AC/Eiger 400 Manual
Primary: 2.392
Secondary: 1.133
Final: 3.6
Subtrans Reduction: 1.296 (High Range), 2.435 (Low Range)
Trans Gears
1st: 3.083
2nd: 1.933
3rd: 1.388
4th: 1.095
5th: 0.913
Rev: 2.833
High Range (Overall)
1st: 39.032
2nd: 24.472
3rd: 17.572
4th: 13.863
5th: 11.559
Rev: 35.867
Low Range (Overall)
1st: 73.243
2nd: 45.922
3rd: 32.975
4th: 26.014
5th: 21.690
Rev: 67.30
that low range reverse ratio in bold is what the newer 400M would have if the low range gears could be selected. 400M guys, this is worth your time investigating... that's an awesome reverse gear ratio (the 500M low/rev is 52.85:1). it hurts to see that the only reverse you can get is taller than high range 1st gear.... which makes suzuki look even more stupid b/c why on earth does anyone need a reverse gear that tall. reverse needs to be one of the lowest gears you can get on the whole 'wheeler. the 400M has some awesome gears in low range, just needs the right reverse gear. the 4.0 diff gears will only bump up the reverse gear from 35.87 to about 39.85:1, which is only about as strong as high range 1st gear.
the great thing about the 400Ms, and that most people don't know, is that it's even geared lower and the gears are better spaced than the big bear 400 (including the IRS w/ locking diff. version):
Big Bear 400
99-current single range 5 speed:
Primary reduction: 76/24 (3.166)
Secondary reduction: 28/24 x 24/18 (1.584)
Final Drive: 33/9 (3.6)
Gear Ratios (Overall Ratio)
1st 40/12 = 3.333 (60.18)
2nd 34/18 = 1.888 (34.09)
3rd 30/22 = 1.363 (24.61)
4th 25/26 = 0.961 (17.35)
5th 19/27 = 0.703 (12.69)
Rev xxxx 3.019 (54.51)
.....if only the 400Ms could select low range with reverse.... you'd have the perfect combination of low and high gearing (pulling power and top speed), the cat's frame and ground clearance, no radiator to worry about, and good looks. if the reverse was right, the AC400M would take the big bear's place completely as the king of the simple, low cost, durable mud bike crown.
I'm trying to get the Eiger guys involved too.
< Message edited by LiveForMud -- 1/20/2008 8:30:37 AM >
_____________________________
2005 RED AC 500M
Remote mounted g.o.r.i.l.l.a. 3k lb winch
PC680 battery
iEquus 8068 3 3/8" tach
Reloc'd radiator
26-in XTRs
some other stuff
!seals, !brakes, !traction, !BEVEL GEARS, !money, !sanity...
Dad's ride- 06 Foreman S 4WD
Bro's ride- 07 King Quad 450
|
Inbox 
Printable Version
04+ AC400m reverse fix? - 
i just posting this so i cant get emails when someone replies im very interested in this
