Optional Ratio Gear Sets

[Thorne_Dog]

Are there any disadvantages to using a different ratio between the front and rear axles that has been noticed yet? I know I read that several guys have been doing it with great success. But it hasn't been very long yet. I'm curious as to what kind of stress that puts on the driveline as well as tire wear and tear. Do you see this being a problem with a stock Axial Scorpion? Perhaps on some of your crawlers this isn't a big issue due to the upgraded parts you're using that might be able to handle the stress more-so than the stock Axial parts, aka the transmission and driveshafts. This is also assuming that the ring and pinion themselves are built tough enough to handle the stress, which I guess after only a month or so is going to be hard to tell, but have any of you that are using different ratios from front to back taken your axles apart after the initial install to inspect the ring and pinion gears or the lockers? Also if the tires are either spinning excessively or being dragged in comparison to the other axle (because two out of the four tires are going to have to give either way) has there been a noticeable difference in tire wear for you guys yet? Thanks for the heads up, I'd definitely love to hear some first hand input on these concerns of mine.

[BENDER]

Originally Posted by Thorne_Dog

Are there any disadvantages to using a different ratio between the front and rear axles that has been noticed yet? I know I read that several guys have been doing it with great success. But it hasn't been very long yet. I'm curious as to what kind of stress that puts on the driveline as well as tire wear and tear. Do you see this being a problem with a stock Axial Scorpion? Perhaps on some of your crawlers this isn't a big issue due to the upgraded parts you're using that might be able to handle the stress more-so than the stock Axial parts, aka the transmission and driveshafts. This is also assuming that the ring and pinion themselves are built tough enough to handle the stress, which I guess after only a month or so is going to be hard to tell, but have any of you that are using different ratios from front to back taken your axles apart after the initial install to inspect the ring and pinion gears or the lockers? Also if the tires are either spinning excessively or being dragged in comparison to the other axle (because two out of the four tires are going to have to give either way) has there been a noticeable difference in tire wear for you guys yet? Thanks for the heads up, I'd definitely love to hear some first hand input on these concerns of mine.

I've been driving my rig quite a bit with different ratios front to rear without any issues at all. The ring and pinions are hardened steel and show zero wear. I even ran the high speed gear set out front and under drive out back for a while without any noticeable wear and tear on parts. The Axial tranny is plenty stout as well, so that shouldn't be an issue. I haven't noticed any excess wear on the tires either. I honestly don't see a single disadvantage to running a slightly different ratio front to rear. With the high speed gears out front, or the under drive gears in the rear, it keeps the front tires spinning a hair faster. So, you get almost the same affect as a Berg axled rig without the annoying axle stall they suffer from. ;)

[RXcrawler]

Nice I'll be trying these in the future!!! Good job axial.

[binaryterror]

Originally Posted by BENDER

I honestly don't see a single disadvantage to running a slightly different ratio front to rear. With the high speed gears out front, or the under drive gears in the rear, it keeps the front tires spinning a hair faster. So, you get almost the same affect as a Berg axled rig without the annoying axle stall they suffer from. ;)

Bender, I'm sure you've driven your share of MOA vehicles.

My thought is that on my MOA truck the Stall is only at low throttle, so when I blip hard it "fixes" the stall. I ended up running differing pinions to do exactly what you mention.

The dual ratios would never equalize out in the Axial, which to me seems like a benefit and why I geared my MOA the way it is.

I can't wait to get these in for my scaler.

Also YGPM, I'm having issues with my SCX-10 axles...just need a quick answer.

[BENDER]

Originally Posted by binaryterror

Bender, I'm sure you've driven your share of MOA vehicles.

My thought is that on my MOA truck the Stall is only at low throttle, so when I blip hard it "fixes" the stall. I ended up running differing pinions to do exactly what you mention.

I hear what your saying. But, when you are trying to clear a tight technical set of gates at extremely low speed, gassing a Berg to get rid of stall would probably cause you to clip a gate. I've seen this happen a few times with guys running 3 channel radios on their Bergs.

[MDcrawler72]

Is their a release date yet?

[ynmech]

Originally Posted by MDcrawler72

Is their a release date yet?

X2 on that.

[Harvo]

Originally Posted by ynmech

X2 on that.

and 3

dyin here waiting for these!!!

[irok]

We ordered 3 sets of each from our 2 local stores,no word on the date yet.:-(

[Thorne_Dog]

I think distributors should be getting them either this week or next, so not much longer for your LHS to have them if they were backordered for you...

[SDheavymetal]

I want to gear down with the new lower gears. Can the 14t pinion be used with the 43 ring gear? I was thinking of using the 14/43 front and 13/43 rear. What do you think? Matt

[Thorne_Dog]

Originally Posted by SDheavymetal

I want to gear down with the new lower gears. Can the 14t pinion be used with the 43 ring gear? I was thinking of using the 14/43 front and 13/43 rear. What do you think? Matt

I think you'll never notice the gear ratio difference between one tooth on the pinion gear to be honest. That's probably too small of a change to really be able to recognize. I'm guessing the marginal difference in the size of the 14t vs. the 13t won't matter enough to make it not work with the 43t ring gear though, I would assume they would mesh properly, perhaps slightly tighter but I don't think it would be enough to make it bind. I could be wrong, perhaps someone has already tried it and will chime in with first hand experience.

[Matt.k]

Originally Posted by SDheavymetal

I want to gear down with the new lower gears. Can the 14t pinion be used with the 43 ring gear? I was thinking of using the 14/43 front and 13/43 rear. What do you think? Matt

Unfortunately they are matched gear sets. The profile of the gears changes with the different ratios. We don't recommend mixing them as the gears are spiral cut and will not mesh properly.

Thanks,
Axial

[SDheavymetal]

Originally Posted by Axial

Unfortunately they are matched gear sets. The profile of the gears changes with the different ratios. We don't recommend mixing them as the gears are spiral cut and will not mesh properly.

Thanks,
Axial

Thanks thats what I thought. Are you guy's comming down To San Diego again for a Comp? Matt

[jeepster73]

I'm running a Novak Goat 18.5 system which already has decent wheel speed...

should i run the lower ratio in rear or
higher ratio in the front?

i have minimal to no torque twist already....what do you recommend?

[BC_4RUNNER]

My local shop in canada said March 12th release so here's crossing my fingers

[K Riccardi]

Axial, is there a release date?

[jeepster73]

Remember that China just celebrated their "NEW YEAR"...i have noticed that alot of R/C parts are out of stock or back ordered..I think that might
be a reason for the short supply!....

[corkysk8]

Can we get an update on a release date.

[bigflex]

I am patiently waiting for the set I ordered form TCS! I hope I will be getting them soon.