RC-Monster Forums - Building A Drag / Street Ve8 Buggy Need Advice !

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Quote:

Originally Posted by The Overclocker (Post 398356)

Slipperential ? heard very little about it whats that ? for better traction ?

My #1 favorite RC-Monster product. It's a 1/8 center diff with a built-in slipper. Great for traction control and drivetrain protection.

http://www.rc-monster.com/proddetail...Mslipperential

Quote:

Originally Posted by DrKnow65 (Post 398362)

Delta (D) winds make more power on the bottom end, Y's (just like the cymbol) make more power on the top end. Should be a little easier on the gear train on startup and give a little more push at the end of it's rpm range.

The 1.5y should end up right about 45k rpm with the load. I think even with the little extra kv rpm the 2.5d may not spin as fast at the end with the load.

You could push it to the 2D and get more rpm, but your maxing out the rpm even with a load, and if it spins the tires on a fresh pack it will over rev. Not to mention how slow your going to need to roll on the throttle.

ok but exemple , the 2650kv kit on 6s would hit passed 60k rpm ... woulnt this be faster ??

60k is the rpm limit, if you spin any faster your warranty and reliability are out the window, heat becomes an issue, and it could become a game of keeping replacement parts on hand :-)
This is also why I recomend the XL over the Mamba Monster in your rig, reliability as it has a higher amp capacity and data logging so you KNOW what's happening after a run.

If you don't care about ratings and reliability, you could run a 1415/1D (4200kv), I've heard they will spin 100K for a while. Pair that up with a Mamba Monster on 6S for 94k rpm, gear for 100mph...How long it will last, and how hot it will get are a mystery to me.

I know the 1518/XL combo I have is rock solid, runs cool, and is IMHO the ultimate setup for a <10 pound 1/8th buggy.

P.s. There is a way to make the 1518 fit in your buggy :yes:
You could run the XL on 6S with the 2200kv Castle 1515 too :yes:

I also think the slipperential isn't a must have in your application. It is there to protect the drivetrain from the shock of landing with the tires spinning or stopped. If you are just doing speed runs and not building an all-around buggy you should be fine without it.

If your going to build a multi purpose buggy you should consider it.

Why not come up with a custom mount to allow using a different diff setup?

I think there are two expectations butting heads here a little bit: the desire for a 100mph+ speed demon, and the desire to keep things simple. On a good note, a 1/8 buggy is a pretty decent speed demon platform IMO, and a 1/8 on-road GT is only a few parts away. Plus, as people have mentioned others, including the RC mags, have got 1/8 buggies going pretty damn fast without too much work. However, if you look at the extreme speed vehicles, almost all of them are VERY heavily modded, with custom parts, sometimes barely resembling the "base" chassis at all. So it's up to you to decide where in that spectrum you want your vehicle to be.

I agree DrKnow, I don't think the Slipperential is really in the cards for a speed machine build, I was just posting the link since he asked about it. I could see it possibly being applied to drag racing for launch control (using a VERY tight slipper setting) but it could just as well just slow you down (more rotating mass than a regular center diff). I don't know much about drag racing, if you want the tires to break loose, or not? Most people do look at the Slipperential as a drivetrain protection item (which it is) but it's equally a traction control tuning aid.