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Thirdgen89GTA · 07:12 PM

I don't have a Hyper ST. I've got a Jammin X1 truggy though, and while people recomended the single battery layout, no one told me I was crazy or that it couldn't be done with saddle pack style. My advice is to take ALL of your measurements and mock it up on the chassis. There will be drilling and countersinking of the chassis most likely.

Now that the truck is done I'm VERY happy with the saddle pack layout. Left to right is about as balanced as it can get, and the truck is actually balanced front to back very well too. The motor is already pretty close to centerline, so even though its nearly 416 grams, it doesn't have much polar momentum.

With twin 2S packs its slightly nose heavy. Steers faster under power. With twin 3S packs its a little less nimble, but the run time or speed benefits are why I'd run it that way. 3S 10,000mah is nice. But if you wanna go fast just change from parallel to series and go 6S.

The only annoying thing is making sure to label your packs so you only run them in pairs. I only have 1 pair of 2S, and 1 pair of 3S but when I get more I'll label them so I don't mix and match new/old packs.

If I did it again though I would have gone for custom battery trays to fit the batteries I do have better. since the trays are slightly too long and I had to do some clearancing to make them fit. I also installed stops to prevent the battery from sliding forward. If I had gone with custom sized trays I could have avoided that.

If you go saddle pack, you can make a rear ESC tray that will put the ESC between the two packs. I just finished the last revision to the setup which lowered the ESC and protected it better from lid impacts.

http://www.rc-monster.com/forum/show...t=30843&page=2

	(#3)
Thirdgen89GTA You can sleep in a car, but you can't race a house Offline Posts: 311 Join Date: Mar 2007 Location: Buffalo Grove, IL	02.16.2012, 07:04 PM I don't have a Hyper ST. I've got a Jammin X1 truggy though, and while people recomended the single battery layout, no one told me I was crazy or that it couldn't be done with saddle pack style. My advice is to take ALL of your measurements and mock it up on the chassis. There will be drilling and countersinking of the chassis most likely. Now that the truck is done I'm VERY happy with the saddle pack layout. Left to right is about as balanced as it can get, and the truck is actually balanced front to back very well too. The motor is already pretty close to centerline, so even though its nearly 416 grams, it doesn't have much polar momentum. With twin 2S packs its slightly nose heavy. Steers faster under power. With twin 3S packs its a little less nimble, but the run time or speed benefits are why I'd run it that way. 3S 10,000mah is nice. But if you wanna go fast just change from parallel to series and go 6S. The only annoying thing is making sure to label your packs so you only run them in pairs. I only have 1 pair of 2S, and 1 pair of 3S but when I get more I'll label them so I don't mix and match new/old packs. If I did it again though I would have gone for custom battery trays to fit the batteries I do have better. since the trays are slightly too long and I had to do some clearancing to make them fit. I also installed stops to prevent the battery from sliding forward. If I had gone with custom sized trays I could have avoided that. If you go saddle pack, you can make a rear ESC tray that will put the ESC between the two packs. I just finished the last revision to the setup which lowered the ESC and protected it better from lid impacts. http://www.rc-monster.com/forum/show...t=30843&page=2 1989 Pontiac TransAm GTA, 5.7L LT1/M6 400rwhp+ Jammin X1 CRT Pro, MMM/1717, 6S Hyper One Seven 1/7th scale GT car, MMM/1717, 6S Hyper 10TT, MMP/1410, 3S TL Mini 8ight, stock, 2S Last edited by Thirdgen89GTA; 02.16.2012 at 07:12 PM.