Thanks for the help buddy... Gave it a little test run to day just to see that the car is all lined up and everything... But ITS A BEAST!!!! I lost a wheel nut so that cut my session early.... The motor and esc is running quite hot... What sort of temps should i be reaching MAX... if its quite high i may have to gear a little lower.....
Vids coming soon... once i receive my new lock nuts...

Get some blue threadloc while your at it- I lost a wheel & stripped a hex as a result last trip out, silly really as I have 3 tubes of the stuff at home :sarcastic:

Max temps ( general guide lines ):

motor 180*F max, ideally 120-160*F
esc 160*F max, ideally 120-140*F
lipos 120-140*F max, ideally... less.

Also as a general rule:

hot motor + cool esc & batts = undergeared
cool motor + hot esc & batts = overgeared
warm everything = just right
hot everything ( or hot esc and motor since massive lipos take alot to heatup ) = way overgeared.

With your 1520 motor & 5s lipo, you should be able to gear for around 35-40mph ( maybe 45mph+ with 6s- depends on temps really ) quite happily I'd have thought- doesnt sound all that fast but these big trucks are a real handful with that much power on tap, they soon cover a field or football pitch sized area and need room to slow down again :lol:

As i only did a short run and didnt record temps ill have to check next run. Didnt want to run any longer not knowing the temps....

I did notice that the fan was on quite a lot of the time on the esc, but many people say that theirs is on. Im very tempted to work out a way of installing my own custom fans which remain on at all times.

Thanks for the info neil! ill use that as a general rule of thumb...

40mph is a little slow... My exact gearing is shown below... I was easily hitting 50-60 on short grass today!!! It was just as fast if not faster than my standard flux with the torq2200 i may gear it down to a 17t clutch bell.

Differential Ratio: 3.2222222222222223
Transmission Ratio: 1.5366847826086956
Other Ratio: 1
Spur Tooth Count: 44
Pinion Tooth Count: 21
Total Voltage: 25.2
Motor KV: 1600
Tire Diameter (inches): 5.5
Tire Ballooning (inches): 0.5
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 2.1 : 1
Total Ratio: 10.37465 : 1
Tire Circumference (inches): 20.42 inches (518.68 mm)
Rollout: 1.97:1
Total Motor Speed: 40320 RPM
Vehicle Speed: 75.15 mph (120.72 km/h)
Effective KV Value: 1600
KT constant: 0.85 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...

" Vehicle Speed: 75.15 mph (120.72 km/h) "

:surprised: :surprised: :surprised: :surprised: :surprised:

That would be why it's running so hot... Even if you aren't reaching those speeds (which you're not) the electrical system is still under lots of stress. Try for something at least below 50 mph and see how it goes.

Yea that's some tall gearing. I'm geared for 40-45mph on my XXL running a 1521 and that's kinda pushing it. Motor never got over 130 but it was only 12-14C outside.

Yeah, that'll be why its running hot. :lol:

I know everyone wants a super fast truck, but to reach those kind of speeds, you'd need a more powerful esc and much larger motor, in a truck weighing this much. I'd say something like a HV boat or plane esc sold by Castle would be great as you're using mech brakes ( no need for esc brakes or reverse ), and run more like 8-12s lipo with a ~1000kv Neu 1527 or 22xx series motor. The 1520 is a large motor, but it physically cant pull that gearing in a truck that weight ( the 1515 tops out at about 65-70mph max in an emaxx or erevo weighing 9-10lbs on 6s lipo, gearing higher just causes more heat from current draw, but wont make the truck go any faster )- you are asking the impossible pretty much :rules:

Definately gear for 40mph and see how it does, otherwise you will indeed need a more powerful motor and esc...

lol that gearing was my fault...
I have a new 18t pinion and 47spur coming and it should lower my top speed to 55mph on 6s. Ill see how my temps fair after that... Cant run at the moment as i lost a wheel nut on my last run and waiting on the replacements....

Anyway in the quest to keep my weight down... i no longer use the heavy fibre glass body and managed to finish painting my desertrat body... what do yall think???

http://i878.photobucket.com/albums/a...7/DSC00265.jpg
http://i878.photobucket.com/albums/a...7/DSC00264.jpg
http://i878.photobucket.com/albums/a...7/DSC00267.jpg
http://i878.photobucket.com/albums/a...7/DSC00266.jpg

It came out well for a first paint job :)

Indeed, that looks great. :yes:

The wing seems a bit undersized compared to the shell, might be worth looking at a proper baja or other 1/5 scale item, but it looks alright really. :smile:

Oh neil!!! Why did you have to point that out lol It does look undersized in the pictures.. .but looks acceptable in person... DAMN now i am going to go look for a larger wing! Thanks for helping me spend my money neil lol

Nice job on the body. I think the wing looks fine 'cause it lines up with the points on the back end of the body. :yes:

NEW IDEAS!!! Help me
 

Thanks whats nitro... i think i will leave it unless i find something else... but not desperate.

I hope to have this badboy up and running by the weekend!!! Im dying to run it properly!

The last few things on their way at the moment are:
Wheel Nuts
18t mod1 pinion
47t steel spur
my charging adaptor for the hyperions too...

Thats all that needs to be done really...

I dont have anything else to do??? :whistle:
Guys seriously... this truck is finished for the time being... What do i do?
Do i begin building a second savage now?

I know exactly what ideas i have for my next build ..... and possible changes to my current one.....

Ok after being around here for the last few months... i have now realised that i have made a few mistakes with buying the tvps i had bought. Although i do love them as the handling is ridiculous... tames all those wheelies and puts the power too the ground... its just that bit too heavy for big top speed... but we will get back to the current savage furthur down....

So my next savage is going to be utilise an ext PRC lcg chassis which will use my current Neu 1520 motor and geared for around 40 on 5s (no 6s here, light weight batteries ftw) PLENTY OF CARBON PARTS - I will be using this for racing (found a track near me), and hard bashing (depending on what shocks i put on it)

Back to my custom OVERKILL Plans:diablo:
As for my current XXL Savage... i am going to create a speed machine/shelfqueen out of it. It wont be used to bash hard... it will be used to cover huge spaces in no time at all.
It will still be kept as light as possible for what it is
I have plans for an overkill setup for the large wheel base and wide footprint...
I have decided on:
- Two torque 2200 and 2 MMM powering this thing. OVERKILL I KNOW but for a heavier car... splitting the weight over two Motors should help take the strain away from oneand allow me to gear high without heating issues :neutral:

I have been emailing dan at karshaw regarding motor mounts for twin setups. (as most of these mounts require you to mount motors up high in the chassis above the spur gear... this will no longer be safe to do jumps with (worried about ripping the motors from their mounts on landings)) I hope i will be able to make these mounts work with the reverse tranny and forward mounting on my DB-17 chassis.......

Any of these motor mounts work with torq2200 motors?
http://204.186.93.64/MotorMounts-Savage.html

http://www.fileden.com/files/2007/10...vageXMount.jpg
http://www.fileden.com/files/2009/4/...-Savage700.jpg

Batteries will be mounted on the inside of the chassis and outside utilising the original battery boxes. two sets of 6s:diablo: should be awesome!

Anyway i see how this all goes... I just want to run my current truck at the moment and have some fun!

I know exactly what i am going to do with my lightweight race savage but more help will be needed with this twin motor savage. Your ideas are most welcome!

The dual mounts for 550 motors will work fine, not sure on the first one though due to the fins killing any clearance under the motor & between the mounting plate.

neil they wont work... im obstructed by the tvps. The motors are too large.....
Ive put this project on hold, but talking to dan at kershaw about making a custom mount. Running one motor above the spur and the second in the stock position below the spur...

nice work and like the painted body must have taken quite some time in a project like that I like the orange covering for the wires I believe I have seen it in black where can I purchase the wire covering?

thanks for the props... The mesh for the wiring i got very cheaply from hobbyking... one of those things just to fill the package to my desired weight. VERY CHEAP! dont know why we havent seen more of it! It has saved my wires many a time!