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Old 03-08-2011, 09:42 AM   #1411
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If anyone could take a few measurements with a caliper, it would be greatly appreciated.

We need:

Length, uncompressed
Spring outer diameter
Wire diameter
Number of coils, not counting the very top and bottom where the spring is closed and ground

From there we can find the lb/in spring rate.
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Old 03-08-2011, 09:56 AM   #1412
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[QUOTE=simplechamp;8767114]If anyone could take a few measurements with a caliper, it would be greatly appreciated.

We need:

Length, uncompressed
Spring outer diameter
Wire diameter
Number of coils, not counting the very top and bottom where the spring is closed and ground

This is the RC4Less spring for Losi8, package comes with spring rates of 12 through 22. (I don't have the standard kit springs)

I have the Gold one at hand (spring rate 16).. the package comes with

Length, uncompressed : 39mm
Spring outer diameter: 25mm
Spring inner diameter: 20.5 mm
Wire diameter: 2.2
Number of coils, not counting the very top and bottom where the spring is closed and ground: 7
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Old 03-08-2011, 10:06 AM   #1413
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Quote:
Originally Posted by Jspeed View Post
Thats cool, but what kind of run times are GT Electrics getting on average?

Not just with big buck batteries, but on average with 4S or (2) 2S packs?

Chime in fellas, need to know.

Thanks.
I like the the Triple A main idea.

I can go 13 min one cheap 5.2mah Turnigy batteries 2 2s pack.

SNR
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Old 03-08-2011, 10:12 AM   #1414
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OK great, thanks Raman! With those measurements the calculated value is 15.5 lb/in, which is pretty close to the 16 lb/in they rated it at, accounting for rounding and measurement error.

So now I'm mainly looking for these measurements on the Ofna and Kyosho springs. The Losi and RC4LESS springs are already rated in lb/in, but it would be nice to find these values for Ofna and Kyosho.
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Old 03-08-2011, 10:55 AM   #1415
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The Kyosho springs are as follows:

Stock:
Length- 43.5mm
Outer Diameter- 20.25
Wire Diameter- 1.9mm
Number of Coils- 6

KYOIGW004-8022:
Length- 45mm
Outer Diameter- 20.75
Wire Diameter- 2.2mm
Number of Coils- 8

KYOIGW004-9022:
Length- 45mm
Outer Diameter- 20.75
Wire Diameter- 2.2mm
Number of Coils- 9
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Old 03-08-2011, 11:52 AM   #1416
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Great, thanks Bill!

Calculated spring rate values:

Stock IGT - 19 lb/in

KYOIGW004-8022 - 25 lb/in

KYOIGW004-9022 - 22 lb/in

As I said before these are approximate and rounded off, but should be quite close to the true value, enough for our purposes. If anyone is interested in the actual calculations, see my post here: http://www.rc-monster.com/forum/show...5&postcount=40

EDIT: I also wanted to note that Revo springs are the same diameter and length as the IGT springs, and should work fine on the IGT shocks. There is a wide variety of spring rates available (16.5 to 36.5 lb/in) for those looking for more adjustability or firmer springs.
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Last edited by simplechamp; 03-08-2011 at 02:34 PM.
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Old 03-08-2011, 02:17 PM   #1417
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Quote:
Originally Posted by snrscion View Post
I like the the Triple A main idea.

I can go 13 min one cheap 5.2mah Turnigy batteries 2 2s pack.

SNR
Steve are those hard case batteries?

I agree Triple A mains are very cool, gotta make it worth the trip yes?
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Old 03-08-2011, 02:23 PM   #1418
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Quote:
Originally Posted by Raman View Post
Get the Losi L8 springs, they're much firmer. You can also go to RC4Less.com, they have their own springs for Losi L8 with even higher spring rates
I have the L8 springs. Still bouncy.
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Old 03-08-2011, 02:38 PM   #1419
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Quote:
Originally Posted by J-milz View Post
I have the L8 springs. Still bouncy.
Get the RC4Less.com set there are two sets.. I use the higher spring rates that range from 12 to 22.
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Old 03-08-2011, 03:26 PM   #1420
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Does anyone know of any alloy spurs that will fit a DM-1 2 speed?

Thanks.
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Old 03-08-2011, 05:00 PM   #1421
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Got a weird problem with my IGT2 Vette. I'm running some OFNA threaded rubber and I've noticed that despite returning the entire dampening system back to factory specs, I still get this grove on the INSIDE track of the front wheels. This grove is approximatey the last ~5mm of the surface area of the tire, just before where the inside side wall meets the surface section. It's almost as if the tires are folding in and rubbing on the sidewall (it is actually a lip that's formed into the wheel that can't be seen unless the tire is removed). This only occurs on the two front wheels and unfortunately, it's been occuring despite several different types of wheels to include OFNA slick and tread, and Inpinema's so I don't think it has anything to do with the actual tire. Last year I just summed the cause up to me running a heavy car (was using 4S2P 8000mah) but I've cut the weight WAY down and I'm practicing with single 4S 4000 or a single 6S 3300 packs.

I running < 2 deg camber so I'm wondering if Toe-in has anything to do with it?
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Old 03-08-2011, 05:42 PM   #1422
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Quote:
Originally Posted by Missle View Post
Got a weird problem with my IGT2 Vette. I'm running some OFNA threaded rubber and I've noticed that despite returning the entire dampening system back to factory specs, I still get this grove on the INSIDE track of the front wheels. This grove is approximatey the last ~5mm of the surface area of the tire, just before where the inside side wall meets the surface section. It's almost as if the tires are folding in and rubbing on the sidewall (it is actually a lip that's formed into the wheel that can't be seen unless the tire is removed). This only occurs on the two front wheels and unfortunately, it's been occuring despite several different types of wheels to include OFNA slick and tread, and Inpinema's so I don't think it has anything to do with the actual tire. Last year I just summed the cause up to me running a heavy car (was using 4S2P 8000mah) but I've cut the weight WAY down and I'm practicing with single 4S 4000 or a single 6S 3300 packs.

I running < 2 deg camber so I'm wondering if Toe-in has anything to do with it?
Now that you mention it, I seem to notice the same thing on one of my wheels but I kinda just blew it off since the tires are wearing out sooner than the wheels. I may have to go back and look again.....now I'm curious.
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Old 03-08-2011, 07:32 PM   #1423
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Has anyone used an Xray 808E to make one of these GT cars? Im very interested in doing this but want to drive an Xray!! From what I can tell I would need different shocks and shock towers. Anyone have any ideas? Thanks
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Old 03-08-2011, 07:32 PM   #1424
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Quote:
Originally Posted by FangsCPO View Post
Now that you mention it, I seem to notice the same thing on one of my wheels but I kinda just blew it off since the tires are wearing out sooner than the wheels. I may have to go back and look again.....now I'm curious.
Too much camber, or too much caster, or maybe both. I would take some camber out first (stand the tire up). If they still wear on the inside, the caster angle is too great (remove shims from in front of the upper arm.) It does not take much to make a difference. If the car does not handle as well, put it back and live with the wear.
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Old 03-08-2011, 07:41 PM   #1425
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Quote:
Originally Posted by williamw View Post
Too much camber, or too much caster, or maybe both. I would take some camber out first (stand the tire up). If they still wear on the inside, the caster angle is too great (remove shims from in front of the upper arm.) It does not take much to make a difference. If the car does not handle as well, put it back and live with the wear.
I didn't think the Kyosho's had adjustable caster at least I couldn't locate an adjustment point other than the Dremel adjuster
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