What is the best setup 8xl and warrior 9920

[Nick]

Originally Posted by Serum

What's up with that smiley flapping his tongue out?!

Nevermind that! Whats with this one: :020:

...lol.

[Serum]

Your smiley has got a bad infection on his ear if you ask me..

i think that we are getting a little off topic here

[sluggie24]

According to the Ohms laws as I understand them, voltage and current have a inverse relationship given the same load. As voltage goes up current goes down and vice versa. So if I use a certian motor and gear ratio with 14v it will draw more current then if I use 18 or 24v. But if I change the load value by changing the gear ratio causing the motor to work harder then then current draw will increase. Can anyone back this up? Lets put this issue to bed. LOL

I think if I gear it properly I can get about the same run time on 20 cells as I do on 14. I just have no idea what ratio to use.

[RC-Monster Mike]

Maxxdude and Serum - nice discussion and I am glad on this fine Sunday that we worked it all out in such a friendly manner. :)
To summarize.....Maxxdude is 100% correct on the "laws". If you take the same setup and simply add voltage, the amp draw will increase proportionally as well and therefore increase total power and decrease runtime(within battery limits, of course). For our purposes, though, the "identical" setup is seldom used when we add voltage(nor should it be). When we add voltage, but change the gearing to achieve the same speed, runtime will surely increase, even with the same motor. If the motor is changed to accomodate the higher voltage, runtime AND speed can easily be increased(hence the purpose of selecting an appropriate motor for the application to maximize power, speed and runtime). Basically, you are both right!
:)

[sluggie24]

Ok Mike. So what would you think would be the proper gearing for this setup for 14cells? 20 cells?

[RC-Monster Mike]

What slipper setup? Strobe? stock diff(which will fail on 20 cells in time, even with the aluminum cups and cases-though they will hold up for a while if you are just running on the street)?
20/51 would get you around 40mph. Runtime wouldn't be spectacular, though.
On 20 cells with the Strobe and 16/51 gearing, speed would be in the mid 40s with stupid torque and a pretty decent runtime as well. 18/51 would get you to 50+ mph if the cells can deliver the voltage.
Given your lack of brushless "drive time". I think you will be quite overwhelmed with the power of this setup on 20 cells. Your wheelie bar won't stop the truck from flipping onto its back with this power, and the torque will be pretty extreme. I think it is safe to say you will be blown away with the performance(and so will anyone that is watching). You will want the suspension, steering and overall setup to be on the money or driving will be a real problem!

[sluggie24]

WOO HOO!!! Glad to hear that Mike. That is what I'm looking for. Stupid power! I ordered the probe clutch with 16t and 18t pinions from you this weekend.......along with a ton or other parts. I did build up the rears already, aluminum diff cases and cups with 3mm screws. The problem I see with longevity with these diffs is the lubrication problem. Any grease put on the gears during assembly will be whipped off when the truck is run. I'm tempted to silicone the cases together and add 1/2 oz. of 70wt gear lube in it. Do you think that would work?

[RC-Monster Mike]

The diffs could easily be modified to accept regular viscous fluid if you have access to a lathe. This would be a better option IMO. Also, the Revo diffs could be used with a different bearing on one side(Revo diff cup is a little different), so a Modified Revo diff(aluminum diff cup) would probably hold up better. Both are band aids in the long run, though. 20 cells and an 8xl motor will NEEEEEED 1/8 diffs for ultimate durability.

[sluggie24]

You're right. But at the moment you show them as out of stock. So I will probably just run it with what I have for now, till they go bad, then get the better diffs. What would I need to change my pinion to with the bigger diffs if I was using a 16t or 18t with the stock ones?

And also, just wanted to say what a great site you have here. I got so much info from this forum that I was saved from buying a HV-Maxx and being dissapointed with the power. And your store has just about everything I need or want. Great job.

[RC-Monster Mike]

Thanks for the site comments, Doug. I see you have ade a couple order this weekend, actually! (I must remember to refund the extra shipping you have paid!). The goal is to make RC-Monster the one stop shop with everything you want or need, backed by knowledge and support. Not perfect for sure, but I do my best, and am blessed with tons of great, knowledgeable members on the foums here(many of whom I consider friends) that are as helpful as any you will find anywhere.
For the diffs...the UE diffs are indeed out of stock, but I do have equivilents available(these are not listed yet, though I will get them listed in time-have a few details to work out first, though). You will need to replace both diffs at the same time-hybrid bulks are a great upgrade to consider at the same time, as these will house the 1/8 diffs and are lightweight and strong. As a general rule, add tow teeth to the pinion for a similar overall ratio when switching to the 1/8 diffs(so 16 on stock diffs = 18 w/1/8 diffs).

[Nick]

Originally Posted by RC-Monster Mike

but I do have equivilents available(these are not listed yet, though I will get them listed in time-have a few details to work out first, though). You will need to replace both diffs at the same time-hybrid bulks are a great upgrade to consider at the same time, as these will house the 1/8 diffs and are lightweight and strong.

Are the equivilents cheaper? Which hydrid bulkheads?

Thanks.

[RC-Monster Mike]

FLM hybrids. The equivilents are about the same price, actually. Just the diffs(no cases, so hybrid bulks are needed).

[sluggie24]

Thanks. Thats my problem when ordering online. I always seem to forget things and have to place another order. I think I made 5 separate orders in the last week! LOL I would be interested in the hybrid diffs as that would kill two birds with one stone. Looking forward to seeing them in the store.

[sluggie24]

Do you sell the diff sets, bearings and cups to go with th flm kit? I didn't see them in the store.