How To: LST Shock Mod

Questions about Hop Ups for the Savage.

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KiZ
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How To: LST Shock Mod

Post by KiZ » Sun Nov 09, 2008 1:38 pm

I see a lot of people asking what parts they need to buy for mounting LST shocks to their savage, so I decided to write a comprehensive guide with guidance to both parts of the mod: the shocks and mounts.

Prices reflect exchange rates as of Feb 2010

[align=center]Choosing your shocks[/align]
When it comes to shocks, you have a few choices. All shocks made to fit the LST1/LST2/Aftershock/Raminator/Mega Baja will work.

Your prime target for buying will be Ebay. LST shocks are very easy to buy for cheap on ebay.

-- The choices --
LST 1 Shocks
Image
The LST 1 Shock. Silver coil-overs, blue anodized alloy body, with blue anodized cap, retainer, rod end, and pre-loads clips. Cheap and but good quality. The clips give you a limited selection of pre-load, which is important to note, as the savage may need a fair amount of pre-load to keep the ride height up due to sagging springs. This can be cured with better springs, mentioned later. Hop-ups available. Most Ebay auctions come prefilled with oil.
Expect to pay $20/pair (Ebay)

LST 2 Shocks
Image
The LST 2 Shock. Silver coil-overs, blue anodized threaded body with plastic cap, retainer, rod end and pre-load ring. A bit more expensive and good quality. The threaded ring system gives you unlimited selection of pre-load. The disadvantage to threaded pre-load rings is that grit tends to get behind the rings, making them difficult to adjust. Hop-ups available. Most Ebay auctions come prefilled with oil.
Expect to pay $30/pair (Ebay)

Aftershock Shocks
Image
The cheapest of the options, the Aftershock/Raminator/Mega Baja Shock has a black coil-over, and all plastic parts, apart from the shaft/coil. Uses a threaded pre-load, which is a plus. Hop-ups available. Most Ebay auctions come prefilled with oil.
Expect to pay $15/pair (Ebay)

IRC Shocks
Image
Expensive. Good looking. IRC LSTs come in two different colors, all black, or silver/black. Steel coil-overs cover 6065-T6 clear/or black anodized threaded shock bodies with alloy caps, delrin retainer, piston, pre-load ring, rod end and hardened steel shafts. No oil included! Warning: these shocks may not be compatible with LST shock Hop-ups. You can purchase extra retainers to fit LST hop-up springs, however.
Expect to pay $52/pair ( Innovative RC )
LST Retainers: $13/set ( Innovative RC )
[hr]

[align=center]Choosing your mounts[/align]
Mounts, mounts mounts. Here is where people seem to get confused. It's simple really. Ideally you want a proper mounting kit to mount those big bad shocks to your baby. You just need to choose a set based on what configuration your truck is already.

-- I have a... --

Savage X/XL/Flux
Image
Step up please, X owners. This is your kit.
Attention Flux owners! Due to the design of the stock Flux TVPs, you will need to run fixed rear carriers to eliminate the rear tie rods. The tie rod eliminator provided in this kit will not fit with the stock Flux chassis.
Expect to pay $39 ( Innovative RC )

Savage 21/25/4.6 (NON X)
Image
Old school owners, You'll need this kit. (Now available in black too!) HOWEVER, please read this first:
The original 21/25 towers were weak. Under the pressure from a single sided shock like the LST, the towers tend to bend over, and will eventually do something nasty like smash your fuel tank after a bad landing. I recommend upgrading to X shock towers. The X towers can be easily modified to fit on the 21/25. If you do this, please use the NEXT KIT DOWN.
Otherwise,
Expect to pay $35 ( Innovative RC ) Silver Black

Savage X with 21/25 arms
Image
Perhaps you just upgraded your shock towers from a 25/21, or maybe you downgraded your arms from X to 21/25. Either way, you need this kit. New Era also do an overpriced knock-off kit.
Expect to pay $36 ( Innovative RC ) Silver
New Era: Expect to pay $53(!) ( New Era )

Note: If you decide to upgrade to different arms/towers at any time, upgrade kits with just the necessary parts are available!.

Any Savage with FLM Towers
Image
These standoffs let you use the shocks on FLM towers. The arms can be anything, you'll still need mounts for the arms however.
Expect to pay $24 ( Fast Lane Machine )

Hold on... I have something else!
RPM arms also need some stand-offs. ( http://www.innovative-rc.com/shock-stan ... p-327.html ) Zero offset wheels may not be guaranteed to clear these?
Flextek arms just need stand-offs. ( http://www.innovative-rc.com/shock-stan ... p-327.html )
For these arms, you could just use the stand offs plus some LST bushings, or you could use the upper mounting brackets included in any of the kits. You will also need either offset rims or axle extenders to make sure the wheels clear the shocks.
FLM arms work without anything (as far as I know).
If you have any other configuration, please ask!

[hr]

[align=center]Shock accessories[/align]
Most LST shocks get a bit saggy after a while on savages, so you might need some stiffer springs. See how your truck fares first with the stock springs though.

-- Springs --

RC Raven Dual Rates
Image
Dual rate springs in a variety of colors. Excellent performance.
Expect to pay ~$8/set ( RC Raven )

Other replacement Springs
Image
Losi yellow springs seem like a good replacement. They are stiffer than stock and you won't need so much pre-load. Please note the offical Losi yellow springs are rated at 7.4, other brands may vary. If you get different springs, a rating of ~7 may be a good place to start.
Expect to pay ~$12/set ( Ebay )

-- Damping --

Oil
Image
Most shocks will come with oil, but if you need it, or want to change oil, here is a little guidance. 35wt is a good place to start. It will give you cushy suspension suitable for general bashing. 40wt is advisable for those more in to lots of jumps, and 45wt for serious jumpers. 30wt would be good if you have *really* bumpy ground and want a smoother ride at high speed.
Please note: you are advise to buy high quality branded oil, as this will be pure silicone oil. Unpure oils will change viscosity at different temperatures and cause unreliable damping performance.
A 2oz bottle will be JUST enough to fill all four shocks, but I strongly advise getting a second bottle for any accidents and top-ups you will inevitably need.
Expect to pay $4/bottle ( Your LHS / online shop of choice )

Pistons
Image
Hot racing sell dual rate pistons for LST shocks, as do IRC for their shocks. The holes are tapered on one side, allowing for you to make the return rate faster or slower than the compression rate. The hot racing pistons are only available in packs with titanium shafts
LSTs: Expect to pay $24 ( Ebay )
IRCs: Expect to pay $11 ( Innovative RC )


-- Other accessories --

Shafts
Image
Shafts with a coating of titanium nitride (TiN) are quite popular. They have an attractive gold finish and low friction coefficient to supposedly improve suspension performance.
TiN shafts: Expect to pay $30/set ( Your LHS / online hobby shop of choice)

Hot racing also offer full titanium shafts, mentioned above. I would be wary of hot-racing products, they aren't exactly renowned for quality.
Expect to pay $24/set ( Ebay )

Bodies/Caps/Etc
ImageImage
There are many companies producing all sorts of (delightful) colors or anodized alloy bodies and caps for LST shocks. Ebay is a good place to start looking. The best quality products are probably Losi's own hard coated bodies (shown on the right).
Expect to pay $45/set ( Ebay )

That concludes my guide to LST shocks and mounting kits. If you have anything you wish to add, please reply and I will include it if it is relevant, along with any corrections anyone may have.
If you have any questions, ask away!

KiZ out.
Last edited by KiZ on Mon Jan 17, 2011 6:38 am, edited 15 times in total.
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Post by richmike » Sun Nov 09, 2008 1:44 pm

Brilliant writeup and really useful pictures  :P Good work!
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Post by joker777 » Sun Nov 09, 2008 1:49 pm

Wow Kiz that is superb info  8) hope this is going to be stickied and or added to the definative list.

Good work that man 8)
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Post by henryhirise » Sun Nov 09, 2008 1:58 pm

[font=Comic Sans MS]nice write up man thanx [/font]
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Post by trashman139 » Sun Nov 09, 2008 1:59 pm

awesome write up. now there is no reason for another right up about LST shocks you covered everything possible.
                     WELL DONE KiZ

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Post by xtremesavage » Sun Nov 09, 2008 2:09 pm

Kiz I swear, you should write for a top notch magazine, that looked like a magazine article.  as always your write ups are greatly illustrated, and very informative.
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Post by PLUH » Sun Nov 09, 2008 2:21 pm

Brilliant Kiz :wink: Now atleast i know what weights oils to run on these bad boys! :lol:
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Post by enzo354 » Sun Nov 09, 2008 2:22 pm

Thanks, this is awesome.
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Post by KiZ » Sun Nov 09, 2008 2:24 pm

*blush*
thanks Image
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Post by grantie » Sun Nov 09, 2008 2:47 pm

wow that a great write up kiz 8O got me thinking now  :wink:
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Post by 69camaro » Sun Nov 09, 2008 3:57 pm

great job just waht i was looking for ,,one thing should be added........ :idea: photos of it installed onto a savage.that would clear up any other future questions.... :idea:

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Post by xtremesavage » Sun Nov 09, 2008 10:07 pm

out of all the lst shocks,are the cheapsest ones the "cheapest" built, I know IRC has some customer service issue's (I dont want that) the LST2's are threaded shaft, but aluminuinm body, I have heard that can be an issue also.    so I am seeing the aftershock's are plastic,with threaded body.  I like the flexabilty of plastic,,,,,,so basicly Kiz,  out of these choices,  what set is the best choice? I am a basher, I am very happy with my stocker's, I am only considering LST's to see what they can or cant offer, would the cheapest set suit my need's?
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Post by CHASER » Sun Nov 09, 2008 10:42 pm

If you go LST
If you go LST

I have had great luck with this setup for many years.
As for plastic LOSI shocks
I
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Post by killasavy » Sun Nov 09, 2008 11:14 pm

Wow this is great !!!

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Post by monteman98 » Sun Nov 09, 2008 11:32 pm

i wish i had this when i did my lst conversion!!!!!!!!!!!!!!!

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Post by KiZ » Mon Nov 10, 2008 2:47 am

[quote="xtremesavage";p="685059"]out of all the lst shocks,are the cheapsest ones the "cheapest" built, I know IRC has some customer service issue's (I dont want that) the LST2's are threaded shaft, but aluminuinm body, I have heard that can be an issue also.
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Post by xtremesavage » Mon Nov 10, 2008 2:56 am

why buy the LST1's and the threaded body,
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Post by KiZ » Mon Nov 10, 2008 8:35 am

[quote="xtremesavage";p="685123"]why buy the LST1's and the threaded body,
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Post by SV250 » Mon Nov 10, 2008 9:12 am

I had problems getting the metal lst1 caps to seal properly on the hardened bodies. Ended up using 2 orings and teflon tape. I have them on my lst2. I dont see any difference between those bodies and the reg lst2 bodies other than color and the adj ring.
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Post by whipnet » Mon Nov 10, 2008 10:44 am

I was looking for ways to mount my Baja 5B shocks on my Savage.  This and the pics helps with that too.

Thanks Kiz!

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