Long Travel AHC (2 Viewers)

[nwfl4runner]

We’re going to be fighting against a limiter we can’t change in the shocks overall length. I would wonder if, at least up front, going to the Nestle armored shocks/coils along with using a long travel arm (modified motion ratio) would balance out? Folks better at math than me can do the numbers, but perhaps the increased spring rate is sufficient to make up for the new ratio. That would actually achieve more travel, and keep CV angles happy, although you’d need a custom length CV

 

[AnyMal]

The issue lies in any scenario that quickly rebounds the shock. The down stroke “bottoms out” and you can feel it. I simply need to be going fast enough to have the suspension fully rebound. 15+ mph. I originally though it was a clearance issue or something was metal to metal at full droop. But that is not the case, nothing even comes close and there is no evidence of interference.

This primarily happens in H although when in N it has been felt ( takes more speed).

It’s my understanding the coil over is simply too short.

The AHC eats up too much droop, even with the 22mm spacer.

I always torque at ride hight on the ground.

I reported this happening prior to my travel adjustment spacers.

I know what you mean. My theory is its just a design “flaw”. For the shock to hold the load it needs, the rebound is always too strong and “hits” back hard towards the ground.


Again why i chose not to lift more at this given time, until a unicorn coil is found. I dont need more ahc pressure, like our adventurer friend who did the world tour, i actually need less. And this preload with moderate long travel spacer of around 25mm on MY model year coils is just perfect right now.

 

[TeCKis300]

The issue lies in any scenario that quickly rebounds the shock. The down stroke “bottoms out” and you can feel it. I simply need to be going fast enough to have the suspension fully rebound. 15+ mph. I originally though it was a clearance issue or something was metal to metal at full droop. But that is not the case, nothing even comes close and there is no evidence of interference.

This primarily happens in H although when in N it has been felt ( takes more speed).

It’s my understanding the coil over is simply too short.

The AHC eats up too much droop, even with the 22mm spacer.

I always torque at ride hight on the ground.

That helps. I mis-typed N/H when I meant shock setting in comfort/normal/sport. I find normal and sport more useful when driving aggressively offroad for better wheel control, but wonder if the higher damping positions help rebound and top out.

 

[Killacaviar]

That helps. I mis-typed N/H when I meant shock setting in comfort/normal/sport. I find normal and sport more useful when driving aggressively offroad for better wheel control, but wonder if the higher damping positions help rebound and top out.

I 100% agree. I spend most of my time in sport mode or comfort mode on pavement.

N/H give me the necessary dampening off-road, regardless if it’s crawling or cruising.

 

[PerryParts]

Hey Folks, I've been working with @grinchy to build a bumpstop for the LC200 with AHC and LT.

We have designs for front & rear with and without LT ready to roll - and we're looking for product testers.

Offering 20% off if you're interested in trying these out and giving us feedback on fitment and feel. Use code PERRYTESTER at checkout.

All of our bumpstops have our built-in compression damping and progressive spring rate, and we price them at what we'd be willing to pay. You can outfit a full vehicle with our bumps for ~$200.

Check us out at: Toyota Land Cruiser | PerryParts - https://www.perryparts.com/tacoma-landcruiser

Stoked for the opportunity to support the LC200 guys. I'm honestly jealous, the more I read this thread, the more I wish I had your AHC suspension.

 

[AnyMal]

Hey Folks, I've been working with @grinchy to build a bumpstop for the LC200 with AHC and LT.

We have designs for front & rear with and without LT ready to roll - and we're looking for product testers.

Offering 20% off if you're interested in trying these out and giving us feedback on fitment and feel. Use code PERRYTESTER at checkout.

All of our bumpstops have our built-in compression damping and progressive spring rate, and we price them at what we'd be willing to pay. You can outfit a full vehicle with our bumps for ~$200.

Check us out at: Toyota Land Cruiser | PerryParts - https://www.perryparts.com/tacoma-landcruiser

Stoked for the opportunity to support the LC200 guys. I'm honestly jealous, the more I read this thread, the more I wish I had your AHC suspension.

View attachment 3254087View attachment 3254088
View attachment 3254094

Awesome. This was my last concern before “wheeling” my rig.

Only thing im going to be short of after this purchase is longer rear diff breather hose, but I doubt ill tear that anyway…

 

[teejnut]

Hey Folks, I've been working with @grinchy to build a bumpstop for the LC200 with AHC and LT.

We have designs for front & rear with and without LT ready to roll - and we're looking for product testers.

Offering 20% off if you're interested in trying these out and giving us feedback on fitment and feel. Use code PERRYTESTER at checkout.

All of our bumpstops have our built-in compression damping and progressive spring rate, and we price them at what we'd be willing to pay. You can outfit a full vehicle with our bumps for ~$200.

Check us out at: Toyota Land Cruiser | PerryParts - https://www.perryparts.com/tacoma-landcruiser

Stoked for the opportunity to support the LC200 guys. I'm honestly jealous, the more I read this thread, the more I wish I had your AHC suspension.

View attachment 3254087View attachment 3254088
View attachment 3254094

Do you have measurements of the compressed length for the different versions? Does anyone have this info for the stock bump stops?

 

[AnyMal]

Also ETA for long travel AHC?

 

[turbo8]

Parts are being anodized now. Hopefully they will be done today or tomorrow. I then will need to install the key locking inserts, package them up and ship them out. If all goes to plan, I will ship them out on Thursday.

Edit: just heard back from the anodizer, Probably won't be ready until Monday next week. Sorry

 

[CanadianRockyCruiser]

Parts are being anodized now. Hopefully they will be done today or tomorrow. I then will need to install the key locking inserts, package them up and ship them out. If all goes to plan, I will ship them out on Thursday.

Sweet. If you were able to make a similar mount for the front LCA, which spaced up the shock eyelet by ~25mm, I think it would be WAY easier to install than the shock-top spacers/studs that everyone seems to be using.

Am I missing something here that makes a shock-top spacer better than an LCA/bottom-eyelet spacer? Is it preload that you are looking for? The bottom end would be easier to install, requiring zero modification of the AHC fluid line, studs, etc. If people need to be able to hold more load, then I guess compressing the springs is necessary, but if not a sensor lift and bottom end spacer might do the trick.

Here's a photo of the 100 series solution from Japan 4x4...

A similar solution could fit into the "pocket" of the 200 series LCA and extend the mounting point upwards by ~25mm, achieving the same thing as @turbo8 has done at the rear.

Someone school me here

 

[tbisaacs]

Hey y’all, anecdote from broken arrow in Sedona.

I had some pretty Alarming noises of what I think is CV binding when in high. I just have a sensor lift.

But at full lock, or any hard up and down I can definitely hear unhappy noises. It freaked me out enough that I ran the last 1/3 in normal height. Noises stopped.

Makes me unsure about adding more front stroke.

 

[AnyMal]

Sweet. If you were able to make a similar mount for the front LCA, which spaced up the shock eyelet by ~25mm, I think it would be WAY easier to install than the shock-top spacers/studs that everyone seems to be using.

Am I missing something here that makes a shock-top spacer better than an LCA/bottom-eyelet spacer? Is it preload that you are looking for? The bottom end would be easier to install, requiring zero modification of the AHC fluid line, studs, etc. If people need to be able to hold more load, then I guess compressing the springs is necessary, but if not a sensor lift and bottom end spacer might do the trick.

Here's a photo of the 100 series solution from Japan 4x4...

A similar solution could fit into the "pocket" of the 200 series LCA and extend the mounting point upwards by ~25mm, achieving the same thing as @turbo8 has done at the rear.
View attachment 3254526
Someone school me here

Nothing wrong with your thinking except that the top spacer solution sees no shear forces, only compression and is "safer". Unlike the lower eyelet seat extension which is more susceptible to shear and torquing, as well as potential geometry changes. The top bucket spacers are just sat in there and stationary, whereas that solution is in a component joint that is made to move and does see twist and torque forces during use.
But yes, esxeentially it is more easy to add stroke that way. I personally did not want to mess with that.

Obligatory im ignorant... These are just my thoughts and opinions!

 

[CanadianRockyCruiser]

Hey y’all, anecdote from broken arrow in Sedona.

I had some pretty Alarming noises of what I think is CV binding when in high. I just have a sensor lift.

But at full lock, or any hard up and down I can definitely hear unhappy noises. It freaked me out enough that I ran the last 1/3 in normal height. Noises stopped.

Makes me unsure about adding more front stroke.

Diff drop perhaps?

 

[tbisaacs]

Diff drop perhaps?

I’ll back out my sensor lift first but definitely crosses my mind.

 

[NYC570]

Hey y’all, anecdote from broken arrow in Sedona.

I had some pretty Alarming noises of what I think is CV binding when in high. I just have a sensor lift.

But at full lock, or any hard up and down I can definitely hear unhappy noises. It freaked me out enough that I ran the last 1/3 in normal height. Noises stopped.

Makes me unsure about adding more front stroke.

What kind of noises? Is it like something grinding?

 

[tbisaacs]

What kind of noises? Is it like something grinding?

No, more like a thunk. I’ve crawled around and everything is in it’s correct place lol.

 

[nwfl4runner]

Hey y’all, anecdote from broken arrow in Sedona.

I had some pretty Alarming noises of what I think is CV binding when in high. I just have a sensor lift.

But at full lock, or any hard up and down I can definitely hear unhappy noises. It freaked me out enough that I ran the last 1/3 in normal height. Noises stopped.

Makes me unsure about adding more front stroke.

I'd be surprised if your CV was binding before sway bar end links or the UCA?

 

[nwfl4runner]

Sweet. If you were able to make a similar mount for the front LCA, which spaced up the shock eyelet by ~25mm, I think it would be WAY easier to install than the shock-top spacers/studs that everyone seems to be using.

Am I missing something here that makes a shock-top spacer better than an LCA/bottom-eyelet spacer? Is it preload that you are looking for? The bottom end would be easier to install, requiring zero modification of the AHC fluid line, studs, etc. If people need to be able to hold more load, then I guess compressing the springs is necessary, but if not a sensor lift and bottom end spacer might do the trick.

Here's a photo of the 100 series solution from Japan 4x4...

A similar solution could fit into the "pocket" of the 200 series LCA and extend the mounting point upwards by ~25mm, achieving the same thing as @turbo8 has done at the rear.
View attachment 3254526
Someone school me here

I think an issue would be the amount of droop you'd be requiring the other areas to take due to where the bolt spaces are. You're now involving sway bar components, UCA limits, etc. Absent changing those, we're gaining what is arguably unusable/underperforming travel.

 

[tbisaacs]

I'd be surprised if your CV was binding before sway bar end links or the UCA?

Oh maybe that’s it? I also though maybe my spring is just unseated. No clicking or grinding.

 

[TeCKis300]

Hey y’all, anecdote from broken arrow in Sedona.

I had some pretty Alarming noises of what I think is CV binding when in high. I just have a sensor lift.

But at full lock, or any hard up and down I can definitely hear unhappy noises. It freaked me out enough that I ran the last 1/3 in normal height. Noises stopped.

Makes me unsure about adding more front stroke.

Like @nwfl4runner , I very much doubt it's your CVs, especially for stock stroke.

What's more likely IMO is the steering stops. These are metal on metal stops, and definitely can clank with steering lock and suspension articulating.

Keep the sensor lift. Go AHC long travel.