i like to use my mmp esc with a new reedy motor what trun 13.5

Good call.

MMP/Pro4 issues
 

Having a few issues, and figured I might lean on the knowledge of those in this thread... :mrgreen:

This evening I got my pro4/mmp combo wired up. Upon testing it (after calibrating it to my radio) I ran into a problem...

If I ease into the throttle it slowly and steadily begins to move, and then it jumps forward like it gets a surge from the battery. About the equivalent amount to an 1/8th increase in throttle input. It only happens from a complete stop. I can get on the throttle and back down to a craw and it is fine?:?: I ran in sensored only and smart sense. It did the same thing in both modes.

Last try was sensored only, 0* timing, 4* CHEAT at 8000-9200 rpm. Start power is high, straight throttle curve, punch control disabled, 100% power forward and reverse, 70% drag, auto lipo (I run 3s lipo's)...

Any ideas? :?:

Make sure your sensor wire is plugged in all the way.

I will check it again, but that is the first thing I looked at when it did it... it won't hurt to unplug and replug it back in one more time though...

try recalibrating the esc to the transmitter. The same thing happened to me and this seemed to solve the problem.

I run my timing @ 10*(Normal) and 14 on the cheat. Start power is High aswell.. These guys kinda already touched on the sensor being plugged in which it does kinda sound like. Maybe try another sensor wire if you have one lying around.. What's your gearing ?

32p 15/60 on the transmission. Also have under drive gears front and rear that gear it down a touch as well. When i get home tonight I will re-plug the sensor wire to see if that does it. If not I may try a new sensor wire like you stated... I will also try your timing set-up to see how I like it. This pro4 runs like butter (beside the low speed hick-up I am getting at the moment) :shock:.

New senor wire solved the problem... Thanks for the help "thumbsup"

If one decided to go w/ the Axial AE-2 ESC and the Axial 20T motor, what would be an appropriate gearing choice to go with to keep from letting the "Magic Smoke" out? All would be stock at this point, not sure what the batt choice would be at this point. I currently have a couple 7.2 3000mah nimh batts, but would entertain the idea of some lipo's in the near future.

Lower the better in terms of keeping the motor alive. 87-84 spur and 14-16 pinion.

I ended up going with a 21.5 Xceleron for $55 delivered and 80 amp Sensored ESC $40

If it smokes, not probs, I will see how the RC functions with this set up then look at the Tekin

It's worth a shot. The only thing with the cheaper ESC's is sometime the drag brake is weak or non-existent.

Still stand behind my 30T Brood Apocalypse. Perfecto "thumbsup"

Drag brake I can do without for time being, I think I have a feel for what I will be doing so drag might not be missed too much

I have bought all my basic upgrades thx to you guys
32 P gear sets, Tranny gears, Steering arms, even got some shock towers cheap

"thumbsup";-)

Re: Choosing a motor and ESC for your Wraith
 

I went the Tekin 17.5T and MMP 87/18 , awesome speed and roosting , crawling is pretty good too . Not 55T brushed good but no cogging issues. After getting the 17.5T I couldnt imagine what a 13.5T would be like , I spend enough time on the roof as it is.
Where abouts in OZ are you?

Re: Choosing a motor and ESC for your Wraith
 

In VIC
Yeah I have invested about $580 so far on the whole deal, and I am going to invest more after seeing the potential of the Wraith
I have a 1/5 Baja electric too, I was going to buy a Mamba kit, but as its already working flawlessly, thought I would try a newer kit, aka Wraith
Managed to get the Robinson Tran gears, some aluminum shock towers, heaps of 32 pinions and spurs, aluminum steering pins etc etc
The whole Kit in the way I have got it together is a little more than a RTR here in Oz
No brainer really, and I got confirmation that my Wraith has been shipped :)
21 T Xceliron I have been told will be fine for this app as its sensored
If either can or esc is not up to the job, I will go a Tekin kit
Looking forward to it and many thx to peps on here for the assistance
Oh have you seen the track drive mods available yet?
Looks bloody good!!

"thumbsup"

Re: Choosing a motor and ESC for your Wraith
 

Yep loving the wraiths ( I've got 2 ! ) my first is with the Tekin setup and now with the wet season about to start up here I went for a brushed setup . I originally wanted something a bit faster than what I got but for crawling its way better than the Tekin . I got a Holmes Hobbies BRXL waterproof and a torquemaster expert 35T . I got these thru amain for like a couple of bucks postage , to get the same esc and the lower turn motor from holmes was about $40 postage . That saving was enough to get some more Junfac driveshafts. I have STRC knuckles and chubs on both , 3racing steering link on my HH rig and , better than the Hot racing one on my Tekin rig. Traxxas ends on 4mm allthread and brakeline for lower links , upper links are still holding up ok , original lowers lasted 1 good session . And Stainless steel bolt kits in both .These are a money pit , I have about $900 in each but they are my fave rc at the moment , a go anywhere vehicle.

Re: Choosing a motor and ESC for your Wraith
 

Ben lurking for a few weeks, have learned a lot from you guys, much appreciated !

I haven't settled 100% but I'm leaning towards a Viper sensored 10.5/3100kv. M.M.P. with ext/BEC running 2s 50C Gens Ace packs.

If by some chance the Viper motor does'nt suit my power hungry expectations then I'll prob get a Pro4 3300kv.

Re: Choosing a motor and ESC for your Wraith
 

Quick q guys, since I have posted more in here than anywhere lese, not to get OT, BUT the G-Transition Shock Red 90mm for Gmade Crawler Clod

is this going to fit the Wraith?



Ordered some thinking they were all the same?


Cheers


"thumbsup"

There are threads on those shocks, probably better luck there than in the motor thread.

Re: Choosing a motor and ESC for your Wraith
 

K Harley cheers

Anyways good news, my rig is on its way

Everything paid for
All other stuff selling to fund this sold

;)

Im trying to decide between Tekin ESC's, RX8 and a RS Pro. Any advice on which one.

Re: Choosing a motor and ESC for your Wraith
 

The R8 has more power handling ability. It depends on what motor you plan on.

There both close to the same price, so I figured just keep my options open. Might use it in a different vehicle later on.

Re: Choosing a motor and ESC for your Wraith
 

If you have room and don't mind the little extra pop for the R8. It's perfect if you plan on the Pro4 motor.

Re: Choosing a motor and ESC for your Wraith
 

I'm still learning about crawling but I can comment with certainty about the Tekin stuff. The RX8 is a very robust ESC but honestly for this application the MambaMax Pro is better suited and much cheaper. Also the Castle permits/has the capability of programing with a pocket sized card(No PC required)
Between the RS/Pro and the RX8, the RSP will efficently run the pro4 3300kv on 3s in a crawler/Wraith application with no problem and the RX8 is serious durability insurance but with that comes excessive weight and footprint. Both have very capable internal BEC's where as the MMP is prone to be a little weak.

Re: Choosing a motor and ESC for your Wraith
 

Was thinking, I have a Novak 4.5T 550 Ballistic on 2s I want to try. I tried this motor in an E-Maxx with a MMP on 2s and the truck did close to 20mph. Great power. So curious to see what it would be like. But use an RX8.

Re: Choosing a motor and ESC for your Wraith
 

Suggestion for gearing? I am putting in a Tekin 35T, and using the stock ESC, using only 2S lipos. Only going to use it for trail running, would like to be able to crawl slowly, yet have enough top end for a brisk walking pace. Is that possible with this combo? I have upgraded the servo and put beadlocks on-8oz in the fronts and 4oz in the rears.
Thanks

Try just bumping up to a 84 spur, stock pinion.

Re: Choosing a motor and ESC for your Wraith
 

That is a ton of weight to be adding. Your drive train and motor aren't going to like it very much. Mine has the electronics moved to the rear battery up front and 3oz per wheel up front. I couldn't be happier with the way it crawls and runs the trails. I have actually been thinking about dropping a little weight. From my experience there is a limit to how much weight you add to much can actually hurt you when trying to climb. As for the motor I run a HH 35t with a 84t spur and right now a 19t pinion on 3s and it is almost as fast as the stock motor and on 2s it is a little more than a fast walk. Hope this helps.

Re: Choosing a motor and ESC for your Wraith
 

I will be trying out my 18.5 novak brushless in my wraith, im using 32p gears and need to know what size's to start out with, any help? thanks

The stock ratio is 4:1, so start around there or go lower. I run 60/15, and it's a tight fit.

Re: Choosing a motor and ESC for your Wraith
 

I have yet to assemble the first screw in my Wraith and I'm trying to figure out the gearing, I plan to run a 3100kv Sensored motor on 2s and with the 32P spur and pinion. Heres what I'm looking at, Not sure if this estimated top end speed to much or not enough ??

Differential Ratio: 2.923076923076923
Transmission Ratio: 2.6
Other Ratio: 1
Spur Tooth Count: 58
Pinion Tooth Count: 25
Total Voltage: 7.40
Motor KV: 3100
Tire Diameter (inches): 5.0
Tire Ballooning (inches): .10
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 2.32 : 1
Total Ratio: 17.632 : 1
Tire Circumference (inches): 16.34 inches (414.94 mm)
Rollout: 0.93:1
Total Motor Speed: 22940 RPM
Vehicle Speed: 20.13 mph (32.33 km/h)
Effective KV Value: 3100
KT constant: 0.44 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...

58/25 is way too high of a gear ratio IMO.

Re: Choosing a motor and ESC for your Wraith
 

I'm new to crawling so 20mph was "crawling" for me.

What kind of speeds should I be looking for, gonna need some wheel spin and speed for hill climbing ?

Rarely does anyone in crawling relate to things in actual MPH. Plugging things into a calculator like that is a rare practice. A 3100 KV motor is going to be fast so I would gear down. I would go in the 60/15 or 60/12 range to start.

Re: Choosing a motor and ESC for your Wraith
 

I understand where your coming from, I'm used to 6s and 8s beasts so 20mph seems right in the "ball park" LOL

I want a little speed from this thing because I plan to bash and climb/crawl. I'll heed your advice and start lower with 62/22 BC thats what I have in hand right now.

Thanks H.

You better heed a little more my way because that combo isn't going to fit without modifying the motor plate. You need to drop that pinion way down.

Re: Choosing a motor and ESC for your Wraith
 

Since "you've ben there done that" enlighten me on what is the maximum gearing options are without motor plate mods plz.