Granite Arrma Granite Shocks
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smirkracing
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Hey noob question here, but I'm confused about how the typhon shocks can work well for the Granite. Aren't the typhon shocks MUCH stiffer, since they're meant for a much heavier vehicle? I think the typhon shock springs are in the 6lb per inch range, and the shock oil must be heavier as well.
Can someone explain how we can just bolt on shocks from a much heavier vehicle (i.e the Typhon) while still having the lighter vehicle (the Granite) drive correctly?
Thanks!
PS I believe folks on the forum who says this will work, but I am just curious to hear an explanation for HOW it works out.
Can someone explain how we can just bolt on shocks from a much heavier vehicle (i.e the Typhon) while still having the lighter vehicle (the Granite) drive correctly?
Thanks!
PS I believe folks on the forum who says this will work, but I am just curious to hear an explanation for HOW it works out.
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The Typhon shocks work well for a Granite because they have very similar length.
https://www.arrmaforum.com/threads/...d-blx-4s-shock-information-and-upgrades.7413/
But the Typhon shock springs are nowhere near the 6lb/in range. The Granite 3s shock springs are much stiffer. Yes, the Granite is lighter, but it's a monster truck meant for bashing/jumping. The Typhon is more of a racing buggy. Racing buggies use really light springs. Yes the larger shock body and more oil make a difference, but not enough to make them stiffer. YouTubers using Typhon springs to bash/jump a Granite have the pre-load collars really tightened down. You'll get much better performance with stiffer springs. Trust me, I auditioned ALOT of springs, including the stock Typhon 6s springs, which were WAY too soft.
Granite 3s front spring: 1.00N/mm (5.7 lb/in) https://www.arrma-rc.com/part/AR330538
Granite 3s rear spring: 0.84N/mm (4.7lb/in) https://www.arrma-rc.com/part/AR330539
Typhon 6s front spring: 0.74N/mm (4.23 lb/in) https://www.arrma-rc.com/part/AR330235
Typhon 6s rear spring: 0.55N/mm (3.17 lb/in) https://www.arrma-rc.com/part/AR330239
A thread for shock spring stiffness.
https://www.arrmaforum.com/threads/arrma-spring-list-chart-for-4s-and-most-6s-vehicles.18704/
jkflow added a nice conversion chart to make direct comparisons between N/mm, gf/mm, and lb/in.
P.S. The Associated RC8 Yellow springs are closest to stock Granite stiffness and I found them to be the best overall performers for a Granite with 16mm shocks. In the end, I'm using even stiffer springs for jumping, but the Associated Yellows performed better on the ground.
EDIT: I recently noticed others are buying Kraton 6s front shocks for the rear of the Granite and Mojave front shocks for the front. This is another option to buying Typhon shocks then upgrading the springs. The Kraton and Mojave shocks come with appropriately stiff springs. One thing to note is that the Mojave front shocks are longer than the Typhon's, (the Kraton front shocks are the same length as Typhon rears).
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Ruzty1311
Active Member
They work well because it's basically a hot swap with the exception of needing a couple spacers in the rear so the spring doesn't rub against the driveshaft. You can adjust the preload and also change to a lighter or heavier fluid to get to where you want dampening wise
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I'm running just about the stiffest that will fit a Granite. Mojave ARA330639 shocks in front and Kraton/Outcast AR330507 in the rear. As I said in my previous post, the Associated RC8 Yellow springs are the best overall performers for a Granite with 16mm shocks. But I've seen your YouTube videos, you're a jumper like me (I also have the Typhon arms). The really stiff springs make all the difference in reducing bounce back from chassis slap and landing big jumps consistently.
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stiles
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Yeah man I’m having a issue with bad chassis slap. Went up to 90 weight in the shocks and it helped but I would like some stiffer springs. I’m gonna try the yellow team associated ones then. I like that they are yellow too hahaha. I wish I would have done typhon arms instead of the hot racing offsets but I’m gonna build some type of Frankenstein soon and just do it on a big rock body. Thanks for the info man
smirkracing
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I recently noticed others are buying Kraton 6s front shocks for the rear of the Granite and Mojave front shocks for the front. This is another option to buying Typhon shocks then upgrading the springs. The Kraton and Mojave shocks come with appropriately stiff springs. One thing to note is that the Mojave front shocks are longer (108mm) than the Typhon (104mm) and considerably longer than the Granite (101mm). The Kraton front shocks are the same length as Typhon rears.
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smirkracing
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I've gotten my hands on the typhon shocks and I'm about to get the right springs (either the RC8 or the kraton/mojave springs).
Two questions:
First, what shock oil weight are people using? Mostly the same as the stock shocks?
Second, although I'll test this out myself soon enough, does the Granite act a bit more like an 8th scale vehicle with this shock upgrade? What I mean is that when i drive my 8th scale rigs off a normal jump (say, 6-8 feet of air) they just land like cats - the chassis does not hit the ground, there is no real rebound, and the truck keeps on going (if anything, you can even blip the throttle and accelerate hard because of the added downforce just after landing). My granite, however, tends to bottom out and then bounce off the ground when landing from the same (modest) jumps.
Two questions:
First, what shock oil weight are people using? Mostly the same as the stock shocks?
Second, although I'll test this out myself soon enough, does the Granite act a bit more like an 8th scale vehicle with this shock upgrade? What I mean is that when i drive my 8th scale rigs off a normal jump (say, 6-8 feet of air) they just land like cats - the chassis does not hit the ground, there is no real rebound, and the truck keeps on going (if anything, you can even blip the throttle and accelerate hard because of the added downforce just after landing). My granite, however, tends to bottom out and then bounce off the ground when landing from the same (modest) jumps.
Kla912000
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Either spring combo you are looking at will be better than the Typhon 6S springs. Typhon 6s springs are very soft.
I run 60wt shock oil in my 6s shocks on both my Big Rock and Typhon 3s and am pretty happy with it.
Will the Granite "land like a cat" with no chassis slap? Probably not, but you will have less chassis slap with the Kraton/ Mojave springs than you will with the Associated RC8 springs cause they are stiffer springs. Don't forget, chassis slap isn't necessarily a bad thing. It takes the force of hard landings so you don't damage other not so strong parts.
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I doubt the 8th scale chassis aren't hitting the ground from 6-8 foot jumps. I think if you somehow had a slow-mo closeup camera you'd see they are slapping the chassis. The 3s line bounces because they're lighter. Stronger springs will definitely reduce bounce back, but it won't become a 6s rig. Once you stiffen the springs, you also have to use heavier oil to prevent the springs from rebounding too fast. I'm using 80wt, but didn't notice much of a difference from 60wt. It's the springs that make the main difference.
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jzpdx
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Couple questions when running 16mm 6S shocks on the 3S Granite:
1. Do you bother to shorten the 2-3mm off the Typhon shocks with nitro fuel line under the shock pistons or can the Granite accommodate that slight extra length?
2. Is there a part number for the assembled Mojave front shock or do you have to just buy all the parts? I think I found an assembled shock on Jennysrc: ARA7604V2 is this what people are using?
3. Am I correct that the Kraton 6S Front Shocks Part Number ARA330621 should drop right in on the rear of the Granite (maybe with a couple washer spacers on the lower mount to keep the shock from rubbing the driveshafts)? Answering my own questions with a little more reading, looks like they need the Axial 7.5x8mm Silicone Shock Bushings for the top eyelets too.
Thanks,
1. Do you bother to shorten the 2-3mm off the Typhon shocks with nitro fuel line under the shock pistons or can the Granite accommodate that slight extra length?
2. Is there a part number for the assembled Mojave front shock or do you have to just buy all the parts? I think I found an assembled shock on Jennysrc: ARA7604V2 is this what people are using?
3. Am I correct that the Kraton 6S Front Shocks Part Number ARA330621 should drop right in on the rear of the Granite (maybe with a couple washer spacers on the lower mount to keep the shock from rubbing the driveshafts)? Answering my own questions with a little more reading, looks like they need the Axial 7.5x8mm Silicone Shock Bushings for the top eyelets too.
Thanks,
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Kla912000
Very Active Member
Didn't check your part numbers but, yes, the Mojave 6s front shocks will fit on the front and Kraton 6s front shocks will fit on the rear. They can be found as a complete set at Jenny's or on eBay at a few other parts breakers sites for about half the price of Typhon 6s shocks.
And, no you do not have to shorten the shafts with nitro tubing. They will fit the Granite as is. I have them on my Typhon 3s.
And, no you do not have to shorten the shafts with nitro tubing. They will fit the Granite as is. I have them on my Typhon 3s.
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I did notice Tekno shocks made my Granite more prone to rollover, but they are longer than the Typhons. The Typhon shocks are only slightly longer than the Granite, so it shouldn't make a huge difference. There are other shock replacements that have the same length as stock Granite shocks. The ones I know of are the Proline and GPM shocks.
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Danchamp
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the preload should really be only used to keep spring from being loose when shock fully extended and to adjust ride height,
you can't change the spring stiffness, if u want less chassis slap or stiffer ride u really need to go to a different spring stiffness
this is rc but the principle is exactly the same as on a real vehicle
