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Old 05-12-2005, 09:33 AM   #46
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Quote:
Originally posted by TRF415boy
Well in that case, i can't be bothered to calculate it. It may prove hardly significant as the motion ratio will anyway be very close to 1 and the wheel rate's equation has it raised to the power 2, which makes any change even less significant (in terms of numbers i mean, maybe not on the track).
I don't think it's close to 1. On my TC I get a motion ratio of about .85 which raised to the 2nd is .72. This isn't insignificant especially when the shock angle is incorporated.

I am also concerned about this new systems progressiveness, It looks like it could become digressive if the roll center were high or in the case of pure bump. Looks like it could add progressive roll stiffness though.
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Old 05-18-2005, 11:43 AM   #47
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TTT,

I got my Promodule set last night.
Looks great!

The included red springs averaged at 6.42 lb/in

I don't have the Tamiya spring set yet, so I dug through my old ancient HPI spring sets (pro1 and pro2 era) and measured them.

Measured values
HPI Gold #6826 10.28 lb/in
HPI Silver #6825 8.35 lb/in
HPI Blue #6847 7.78 lb/in
HPI Red #6844 6.05 lb/in

The HPI gold and silver are measuring close to what the HPI site specs them out to be. However, the HPI site isn't even in the ballpark with their blue and red springs. They are supposed to be 14.8 lb/in and 13.3 lb/in respectively. I wonder what they were smokin?
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Old 05-18-2005, 12:09 PM   #48
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ling how do you find out he measurment in LBS for springs ?
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Old 05-18-2005, 01:02 PM   #49
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Quote:
Originally posted by kwerkley
I don't think it's close to 1. On my TC I get a motion ratio of about .85 which raised to the 2nd is .72. This isn't insignificant especially when the shock angle is incorporated.

I am also concerned about this new systems progressiveness, It looks like it could become digressive if the roll center were high or in the case of pure bump. Looks like it could add progressive roll stiffness though.
Well think again, it's what the suspension is based on. There is no lever in there, the shock is directly linked to the hub, the only thing that affect the ratio is the camber change, but it's hardly significant in terms of stiffness.
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Old 05-18-2005, 01:06 PM   #50
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Quote:
Originally posted by JasonC
ling how do you find out he measurment in LBS for springs ?
With a spring tester.


I use a high resolution Larsen Systems model DHT.
This one:
http://www.larsonsystems.com/products/dht/index.html

.0005" length resoluion, .05lb force resolution.
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Old 05-18-2005, 05:40 PM   #51
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Damn Ling....I wish I had one of those

If I knew I was gonna do any asphalt this year I'd have kept one of my Tamiyas around
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Old 05-21-2005, 07:27 AM   #52
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sooo, has anyone run these yet, any feedback on how they work
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Old 05-30-2005, 05:33 PM   #53
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Anyone? How does it work?
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Old 05-30-2005, 05:53 PM   #54
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theres a few posts on the 415 thread from a few of us....

Have to say, so far quite impressed... makes the rear end of the car so much more stable. Plus it looks cool
Even with the really soft springs (the supplied reds are 6lb's), the rear of the car is still fairly stiff. But it certainly seems an improvement over the std LWT setup.

Later
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Old 05-30-2005, 07:12 PM   #55
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this setup makes me wanting to get a tamiya

i wonder when will they include it in a kit
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Old 05-30-2005, 07:26 PM   #56
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Quote:
Originally Posted by Fire
this setup makes me wanting to get a tamiya

i wonder when will they include it in a kit
I doubt it. Is this considered a Tamiya world wide thing or just US? If it isn't world wide, don't expect Tamiya Japan to include it in the new kits.
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Old 05-30-2005, 07:28 PM   #57
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Any place have them in stock right now? Looks like Speedtech is out of them. Also do they use that 950 bearing in those hubs?
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Old 05-30-2005, 10:53 PM   #58
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Quote:
Originally Posted by wyd
Any place have them in stock right now? Looks like Speedtech is out of them. Also do they use that 950 bearing in those hubs?
You could check with Ultimate Hobbies. My brother and I picked up one each this last Saturday. They still had about six or seven sets left, but we were calling up some of our 415 friends and letting them know that they had them in stock. You could try giving them a call, their number is (714) 538-3111.

TC

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Old 05-31-2005, 12:34 AM   #59
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Quote:
Originally Posted by Burlap
I doubt it. Is this considered a Tamiya world wide thing or just US? If it isn't world wide, don't expect Tamiya Japan to include it in the new kits.

if it works and more importantly if it sells then i guess they would want this package be avaliable world wide

maybe i should just grab a 415 and get the module now
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Old 05-31-2005, 02:41 AM   #60
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does anyone know of anywhere thats still got the pro-module suspension in stock?
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