How far can two ratios be?

[ScaleLifeNewbie]

I am planning out a custom build right now and i want to use two different axles..one has a gear ratio of 2.76 and the other has 3.75. Is that too far apart? If so, how close do they need to be? Plese enlighten me on axle ratios lol.

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AR60 VS410
TRX4 Sport
coming soon..

Veterans deserve a whole month too...

[DRED805]

https://www.calculatorsoup.com/calcu...calculator.php

I'd recommend not going over 40% OD.

What are the axles?

[ScaleLifeNewbie]

Originally Posted by DRED805

https://www.calculatorsoup.com/calcu...calculator.php



I'd recommend not going over 40% OD.



What are the axles?

Enduro IFS(3.75) and RC4WD K44(2.76)

______________________________________
AR60 VS410
TRX4 Sport
coming soon..

Veterans deserve a whole month too...

[Panther6834]

I wouldn't even go higher than 35% front OD. The VS4-10 Phoenix, with it's VFD-Twin, has a 'high' of 33-34% (the 'low' is 6.5%), which is the highest I've seen. Something else to think about...if you'll be crawling over lava rock, you'll want an even lower OD (probably no higher than 12-15%). Otherwise, that lava rock will "eat" your rear tires faster than you can chew through a Liliha Coco Puff.


~ More peace, love, and kindness would make the world a much better place

[DRED805]

Originally Posted by ScaleLifeNewbie

Enduro IFS(3.75) and RC4WD K44(2.76)

Well, They're not too far apart... they're just backwards. Your rear wheels are gonna be spinning faster than the front.

[ScaleLifeNewbie]

Originally Posted by DRED805

Well, They're not too far apart... they're just backwards. Your rear wheels are gonna be spinning faster than the front.

Well hell lol. I guess ill have to go with a different rear axle. I was hoping for leafs. On the hunt again!

______________________________________
AR60 VS410
TRX4 Sport
coming soon..

Veterans deserve a whole month too...

[DRED805]

Originally Posted by ScaleLifeNewbie

Well hell lol. I guess ill have to go with a different rear axle. I was hoping for leafs. On the hunt again!

https://store.rc4wd.com/Leaf-Spring-...ng_p_7775.html

Never mind... they're out of stock.

[ScaleLifeNewbie]

Originally Posted by DRED805

https://store.rc4wd.com/Leaf-Spring-...ng_p_7775.html

Never mind... they're out of stock.

Yeah, i seen those. I thought they were even discontinued. Thanks though

Edit: i wonder if i could fit some ar44 gears in the IFS...i could get closer to the k44. I dont mind running some OD.
______________________________________
AR60 VS410
TRX4 Sport
coming soon..

Veterans deserve a whole month too...

[DRED805]

Originally Posted by ScaleLifeNewbie

Edit: i wonder if i could fit some ar44 gears in the IFS...i could get closer to the k44. I dont mind running some OD.

Stock ar44 gears are 3.75 also.

The only leaf spring conversion I saw in a quick search is the BRX01 boom racing axle. Maybe look into that... I don't know anything about it.

and there's a leaf conversion kit for this axle...https://www.crossrc.us/shop/cross-rc-hc4-hc6-rear-axle/

Width is close. Could be something to look into.

[ScaleLifeNewbie]

Originally Posted by DRED805

Stock ar44 gears are 3.75 also.

The only leaf spring conversion I saw in a quick search is the BRX01 boom racing axle. Maybe look into that... I don't know anything about it.

and there's a leaf conversion kit for this axle...https://www.crossrc.us/shop/cross-rc-hc4-hc6-rear-axle/

Width is close. Could be something to look into.

That cross RC axle could work if i could find out the gear ratio.

I was thinking ar44 underdrive up front to bring it bsck down, but i can only find 9.5% by VP. granted i didnt look too deep yet.

Edit: no i would need overdrive to bring it up to the k44.
______________________________________
AR60 VS410
TRX4 Sport
coming soon..

Veterans deserve a whole month too...

[ScaleLifeNewbie]

Ok i think i have an idea.

The rear axle is 30% faster than the front.

If i install the Stealth X trans, i can OD the front 12.8%. That makes the rear only spin 17.2% faster.

Then install the SSD Ar44 OD and get 10% more OD. that brings the rear down to only spinning 7% faster. I think thats more manageable than 30%.


Or i could just say screw scale and run rear links or front/rear leafs.

______________________________________
AR60 VS410
TRX4 Sport
coming soon..

Veterans deserve a whole month too...

[Panther6834]

You do NOT want the rear spinning faster then the front...not even 1% faster. Every time you try to climb...especially a step...you WILL flip it.


~ More peace, love, and kindness would make the world a much better place

[WHITE-TRASH]

There are ar44 leaf mounts on shapeways.

[twade984]

Element diffs are center pinion, ar44 gears are high pinion, so they won’t mesh when installed in an element housing.

The element trans is a good choice, and several companies (hot racing, team knk) make higher ratio o/d gear sets to get up to 25% I believe.

Another member was discussing this same idea a few weeks ago, my recommendation was to use an SSD pro44 rear housing and jec leaf mounts if possible. Not 100% sure the jec mounts are available, or even compatible with the pro44, but it’s worth a look.

[ferp420]

i dont see why you just dont use a elemint rear axle too you can leaf spring any axle not a big deal heck i put a trx4 axle on to a rig with leafs befor i realised it was a real bad idea with the portals and all to much leverage on the leafs lol but it can be done

[ScaleLifeNewbie]

Originally Posted by ferp420

i dont see why you just dont use a elemint rear axle too you can leaf spring any axle not a big deal heck i put a trx4 axle on to a rig with leafs befor i realised it was a real bad idea with the portals and all to much leverage on the leafs lol but it can be done

Because scale man lol.

I really like the looks of the K44 and it will match really good with my body choice, where as an ar44 or element doesn't.

______________________________________
AR60 VS410
TRX4 Sport
coming soon..

Veterans deserve a whole month too...

[ScaleLifeNewbie]

Originally Posted by twade984

Element diffs are center pinion, ar44 gears are high pinion, so they won’t mesh when installed in an element housing.

The element trans is a good choice, and several companies (hot racing, team knk) make higher ratio o/d gear sets to get up to 25% I believe.

Another member was discussing this same idea a few weeks ago, my recommendation was to use an SSD pro44 rear housing and jec leaf mounts if possible. Not 100% sure the jec mounts are available, or even compatible with the pro44, but it’s worth a look.

Thanks man

If i was to choose a different axle, id go for a Pro44. Just for scale looks.

______________________________________
AR60 VS410
TRX4 Sport
coming soon..

Veterans deserve a whole month too...

[Fricker08]

Rather expensive option… but a 2.low transmission provides 30% overdrive to the front axle. And it’s not scale at all


Sent from my iPhone using Tapatalk

[ScaleLifeNewbie]

Originally Posted by Fricker08

Rather expensive option… but a 2.low transmission provides 30% overdrive to the front axle. And it’s not scale at all


Sent from my iPhone using Tapatalk

I totally forgot about the 2.Low. That's a good idea. Still cheaper than my other Idea..VFD. A 3 gear is really scale either though.

[ScaleLifeNewbie]

Would something like this work? I could run some OD while I'm at it also.

https://www.amainhobbies.com/rc4wd-t...zxqseqtzqxactz