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Old 05-03-2005, 08:49 PM   #8611
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Quote:
Originally posted by Besercoe
DJ - Please explain the advantage of this suspension over the LW?
Basically, the Pro-Module Rear Suspension (official name) is a cantilever system but with no additional moving parts. It turns the upper link and the hub into a cantilever. The Pro-Module dampening geometry has more leverage over the tire allowing a softer oil and spring to be used to equal what the tire of a traditional system would see. So even though you’re now using a softer spring and oil, it won’t physically feel soft. In addition, the rate is more expediential with its travel. This portion is reactive to the roll center position. For example: If you were to theoretically lower your upper link down to the same point as the lower arm hinge pin, the system would behave conventionally. The significance of the softer oil is its light viscosity paired to the expediential suspension rate. The result is a suspension that absorbs the common imperfections of the track surface (slow speed shock shaft movement) while also being able to absorb sudden compression such as a curb or chicane (high speed movement) with less tendency to “pack” increasing the range of effective dampening. It should be a noticeable difference in stability. In fact, it makes a car that is out of tweak, less noticeable.
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Old 05-03-2005, 08:54 PM   #8612
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Quote:
Originally posted by croy
DJ,
Do you have a release date for the new suspension?
The suspension is ready to ship now so it's just a matter of being ordered from various dealers.
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Old 05-03-2005, 09:13 PM   #8613
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Quote:
Originally posted by David J.
Basically, the Pro-Module Rear Suspension (official name) is a cantilever system but with no additional moving parts. It turns the upper link and the hub into a cantilever. The Pro-Module dampening geometry has more leverage over the tire allowing a softer oil and spring to be used to equal what the tire of a traditional system would see. So even though you’re now using a softer spring and oil, it won’t physically feel soft. In addition, the rate is more expediential with its travel. This portion is reactive to the roll center position. For example: If you were to theoretically lower your upper link down to the same point as the lower arm hinge pin, the system would behave conventionally. The significance of the softer oil is its light viscosity paired to the expediential suspension rate. The result is a suspension that absorbs the common imperfections of the track surface (slow speed shock shaft movement) while also being able to absorb sudden compression such as a curb or chicane (high speed movement) with less tendency to “pack” increasing the range of effective dampening. It should be a noticeable difference in stability. In fact, it makes a car that is out of tweak, less noticeable.
David,

Thanks for that input...

As a fan of the stock 415 suspension due to it's durability I am wondering how the Pro-Modular Suspension compares.

I own the LW supsension also but prefer running the stock pieces for the strength/durability.
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Old 05-03-2005, 09:51 PM   #8614
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Quote:
Originally posted by TryHard
The X-series are narrower.

Basically it goes in order (narrowest to widest)

XD, XC, XB, XA, X, A, B, C, D

If you look on the link in my sig, you'll find a block chart. Has all the toe angles you'll get with 0, 1 and 2 deg rear hubs.

HiH
Ed
Thankyou.
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Old 05-03-2005, 09:57 PM   #8615
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Quote:
Originally posted by David J.
Basically, the Pro-Module Rear Suspension (official name) is a cantilever system but with no additional moving parts. It turns the upper link and the hub into a cantilever. The Pro-Module dampening geometry has more leverage over the tire allowing a softer oil and spring to be used to equal what the tire of a traditional system would see. So even though you’re now using a softer spring and oil, it won’t physically feel soft. In addition, the rate is more expediential with its travel. This portion is reactive to the roll center position. For example: If you were to theoretically lower your upper link down to the same point as the lower arm hinge pin, the system would behave conventionally. The significance of the softer oil is its light viscosity paired to the expediential suspension rate. The result is a suspension that absorbs the common imperfections of the track surface (slow speed shock shaft movement) while also being able to absorb sudden compression such as a curb or chicane (high speed movement) with less tendency to “pack” increasing the range of effective dampening. It should be a noticeable difference in stability. In fact, it makes a car that is out of tweak, less noticeable.
Now that is a detailed explanation of how it works!!!

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Old 05-03-2005, 10:06 PM   #8616
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Quote:
Originally posted by David J. Basically, the Pro-Module Rear Suspension (official name) is a cantilever system but with no additional moving parts. It turns the upper link and the hub into a cantilever. The Pro-Module dampening geometry has more leverage over the tire allowing a softer oil and spring to be used to equal what the tire of a traditional system would see. So even though you�re now using a softer spring and oil, it won�t physically feel soft. In addition, the rate is more expediential with its travel. This portion is reactive to the roll center position. For example: If you were to theoretically lower your upper link down to the same point as the lower arm hinge pin, the system would behave conventionally. The significance of the softer oil is its light viscosity paired to the expediential suspension rate. The result is a suspension that absorbs the common imperfections of the track surface (slow speed shock shaft movement) while also being able to absorb sudden compression such as a curb or chicane (high speed movement) with less tendency to �pack� increasing the range of effective dampening. It should be a noticeable difference in stability. In fact, it makes a car that is out of tweak, less noticeable.
...

My brain hurts
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Old 05-04-2005, 04:09 AM   #8617
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David J,
Excellent explanation, I kinda get it
Thanks.
Ed
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Old 05-04-2005, 07:26 AM   #8618
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Quote:
Originally posted by David J.
Basically, the Pro-Module Rear Suspension (official name) is a cantilever system but with no additional moving parts. It turns the upper link and the hub into a cantilever. The Pro-Module dampening geometry has more leverage over the tire allowing a softer oil and spring to be used to equal what the tire of a traditional system would see. So even though you’re now using a softer spring and oil, it won’t physically feel soft. In addition, the rate is more expediential with its travel. This portion is reactive to the roll center position. For example: If you were to theoretically lower your upper link down to the same point as the lower arm hinge pin, the system would behave conventionally. The significance of the softer oil is its light viscosity paired to the expediential suspension rate. The result is a suspension that absorbs the common imperfections of the track surface (slow speed shock shaft movement) while also being able to absorb sudden compression such as a curb or chicane (high speed movement) with less tendency to “pack” increasing the range of effective dampening. It should be a noticeable difference in stability. In fact, it makes a car that is out of tweak, less noticeable.
David J.,

Thanks for posting the information on the new suspension.

Any pictures of the pro-module rear suspension?

This question is off topic, but thought I might ask. It seems a lot of touring cars are copying the layout of the 415 and of course the 415 is a copy of some previous chassis.

So what's to keep other manufacturer's from copying the pro-module rear suspension?
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Old 05-04-2005, 04:33 PM   #8619
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Quote:
Originally posted by Apex
David J.,

Thanks for posting the information on the new suspension.

Any pictures of the pro-module rear suspension?

This question is off topic, but thought I might ask. It seems a lot of touring cars are copying the layout of the 415 and of course the 415 is a copy of some previous chassis.

So what's to keep other manufacturer's from copying the pro-module rear suspension?
Photos and set-up information are on the Tamiya USA web site now.

As far as manufacturers copying the system, it's always going to be a possibility with anything.

Here's one of the photos off our site.
Attached Images
File Type: jpg gallery_1.jpg (123.9 KB, 327 views)
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Old 05-04-2005, 04:39 PM   #8620
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Hey david,

Thanks for the pic.

few quick Q's.

What deg toe are the hubs? I'm assuming 0.

Also, not sure if this was alreadt mentioned, but do they use the same bearings as the std LWT hubs?

Regards
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Old 05-04-2005, 05:30 PM   #8621
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DJ...what about a pro-module front suspension?? Or is that just not possible?
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Old 05-04-2005, 05:31 PM   #8622
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Quote:
Originally posted by TryHard

What deg toe are the hubs? I'm assuming 0.

Also, not sure if this was alreadt mentioned, but do they use the same bearings as the std LWT hubs?
Yes they are 0 degree. The bearings are the same as the lwt suspension 5x9mm
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Old 05-04-2005, 05:47 PM   #8623
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Quote:
Originally posted by littleZEN
DJ...what about a pro-module front suspension?? Or is that just not possible?
Would have thought it migh be possible, mounting onto the C-hub....
Just had look at the car, and theres enough room there to do it, without the shock hitting the driveshaft (which i assume is a limiting factor?)

And cheers rtypec, exactly what i wanted to know.
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Old 05-04-2005, 06:54 PM   #8624
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Not a problem - always there to help. Yes, red is faster. Ask MF. Thanks for the well wishes. All of the strollers and kids hardware showed up today. I think I am going to branch off and make hi-end hopups for kids. R/C stroller is the first thing in mind. The kid looks like he is sponsored by PegPerego. See you at the track [/B][/QUOTE]



I can just see it now, "But honey, these titaninum 2 degree read hubs REALLY help the baby's stroller from understeering in the corners..."



Again, good luck to all. I just may have to stop by and check it out.

TC

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Old 05-04-2005, 06:57 PM   #8625
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Is the "Pro-Module Rear Suspension" for use with the 415MS only, or can it be used with a "stock" TRF415 suspension also. Sorry for the silly question.

TC

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