Let me run through some calcs and I can compare some of the ratios.
Send me a PM with your e-mail and I can send you the graphs.
Dangerous is very good with drag racing ratios - hopefully he will chime in.
Craig Torrens ·
weak diff ratio ?
72type3wrx ·
its the only one they have
56astro ·
If they are the only gear sets, then your original combo is about as good as you will get with that diff.
I think that in most situations, the higher the diff ratio, the weaker the parts are.
I think you'll find a beetle 3.875 or 3.44 (used by Wayne Penrose I think) would be a better drag racing diff.
72type3wrx ·
I am waiting for weddle to get back to me for a list of there available gears.
Having the gears rise higher in the next gear is this any real benefit?
Obviously no matter the ratios Albins gears are super strong, I've only heard one or two stories of them braking and that was under tremendous load and on a track.
JVLRacing ·
if circuit yes! 3.55 1st and 4th 1.00
72type3wrx ·
if circuit yes! 3.55 1st and 4th 1.00
is that because take off speed isn't as important on a circuit? also a 1.0 4th will have my engine crying on a highway cruise.
I'm after street ratios, IE cruising around town, racing falcodores at lights and the occasional trip to the strip.
JVLRacing ·
72type3wrx wrote:
if circuit yes! 3.55 1st and 4th 1.00
is that because take off speed isn't as important on a circuit? also a 1.0 4th will have my engine crying on a highway cruise.
I'm after street ratios, IE cruising around town, racing falcodores at lights and the occasional trip to the strip.
Its all about getting power to the ground and helps with circuit. I found 3.55 was spot for 1st gear.. Depending on your torqre figs thats where you need to find out before decidin wat ratio you need.
56astro ·
Here are the graphs so far.
The first one is your suggested ratios. You can see that each new gear is grabbed at a slightly lower rpm.
They are relatively evenly spaced. The dashed lines you can see are std L-Bug ratios. You can notice that you 2nd and 3rd gear ratios are much shorter than the beetle ratios. Not much chop for a water-cooled turbo bug for street driving.
Notice that with that 0.82 4th and that 4.57 R&P, that your rpms at highway speeds are nearly 3200. Could you live with that? Or are you better off getting a taller R&P?
56astro ·
In this graph the ratios are
3.33
2.08
1.3
0.82
3.875 R&P
1st 2nd and 3rd are taller than the beetle, but closer together. 4th is taller, about 2500 @ 100km/h, about 3000 @ 120km/h.
How this would go on the track - ??
Baja Wes ·
If you put all your car info into this program, it will make the gear ratio graphs, it will show the effects of changing the ratio's on acceleration and 1/4 mile times.