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MX 3.8's are 16oz Trencher 3.8's (the older tall ones) are 13.4oz Talon EXT's are 13.9oz. Oddly, the MX 3.8 belteds are lighter than the normal MX's, according to whomever gave me the weights, but still heavy at 14.74oz. I have a thread at arrma forum with a list of all the weights of tires I...

Nitro revo or electric? I never tried the ext's on a nitro revo, only my 2.0 brushless revo, which has far more torque than the nitro, even my big block revo... which I now run a set of trenchers on too. lol!

In the end on the revo, I went back to wrapped 3.8 trenchers. The ext's were too low profile and the revo already bottoms out hard. With smaller OD tires, it was worse. Also, the forward bite was horrible in grass with those tires. The thing spun a lot and fishtailed all over the place. I really...

Heavier tires makes the truck feel sluggish, but I didn't notice much difference as to how the suspension reacted when changing from heavy to light tires. Depending on the tires your changing, if the OD differs much, that will affect the suspension because larger OD will compress the shocks...

You can use the LT springs, just make sure the retainers aren't screwed down so far that the spring bottoms out before the shock/suspension does. Tire weight won't affect spring/shock weight much, that's "unspring" weight, which means it's not supported by the suspension. The tire weight won't...

Are these the shocks? https://hot-racing.com/?partnumber=RVO128X06;c=1294 If you search for the silver springs (which I think I'm finding different ones), they list out the available revo springs: https://hot-racing.com/?partnumber=RVO5095;c=443 - RVO5105 - Yellow, 13 lb/in - RVO5095 - chrome...

Well, a very rudimentary way would be to get a scale and press them down about half way and compare what you get. Either the HR rating is way off, or they are way soft for a revo and more for a jato (both use the same shocks, not sure about pistons though). Jato spring chart: Revo spring...