My BL Savage

Alright, I think I will shoot him an e-mail once I finish the drawings then, thanks.

I'm so close to finishing the drawings!
All I have to do now is to finish the chassis, and then modify some of the existing drawings a bit, then add a few more bits into the assembly to make sure everything is going to fit. I'm leaving for Canada this Wednesday, so I hope I can finish either tonight or tomorrow. I'll post some pictures of the assembly when I am finished.

Well, I have decided that my SolidWorks hates me.
It's crashed twice now, and of course it always crashes at the worst possible times. I'm going to sleep now(almost 5 am, wow)
I'll finish up the little bits (all I have left, really) and post some pictures tomorrow.

Well, I finished the drawings (for the most part). My SolidWorks keeps crashing because my computer hates me, so I'm done with it for now. All I have to do is add some holes to the TVPs, and add a section on the top electronics plate for the ESC/BEC (when I decide what ESC I am going to run, I don't think I want to use the BK 3695). Other than that, the drawings are done, sorry I couldn't get very great angles, I'm pretty bad with the displaying of things in SolidWorks...

General View:


View from the side with one TVP hidden:


View from the front:

I have the HV Hercules BEC it is rated for 60v I havnt used it yet but its in the plan with a HV110 ESC...heres a link

http://www.helidirect.com/product_in...oducts_id=4667

Oh nice!
Will it be enough though with only 3.5 amps of cont. current?

Originally Posted by E-Traxxer

Oh nice!
Will it be enough though with only 3.5 amps of cont. current?

I think so, especially when you will be pushing 40+ volts through it, if your not comfortable with the Hurcules HV they do have a higher amp model but the voltage goes down and also there is the Koolflight

heres the Hercules 5 amp 45v model
http://www.helidirect.com/product_in...oducts_id=4666

and the Koolflight

http://www.hobby-lobby.com/ubec.htm

[MetalMan]

That HV-110 is very nice in the Savage... It's extremely smooth and the power delivery is perfect when you get it set up. Feels just like a car controller aside from the lack of motor brakes.

Originally Posted by MetalMan

That HV-110 is very nice in the Savage... It's extremely smooth and the power delivery is perfect when you get it set up. Feels just like a car controller aside from the lack of motor brakes.

Good to know I think I will like mech brakes more than motor braking anyways. They just have a different feel.
I'm itching to get this whole project done, but I still have to wait on a few components to get in before I can finish the drawings. I'm sure I'll have it finished somewhat soon though.
As for the drawings, I have the motor mounts 100% done, and I am looking to finish the battery trays and the components going along with them tonight. So far I'm on schedule.

Oh, also. 12s fresh off the charger turns out to be 50.4v
The HV-110 is rated for 50v, although it says it will handle 12s. I should be fine, right?

Originally Posted by E-Traxxer

Good to know I think I will like mech brakes more than motor braking anyways. They just have a different feel.
I'm itching to get this whole project done, but I still have to wait on a few components to get in before I can finish the drawings. I'm sure I'll have it finished somewhat soon though.
As for the drawings, I have the motor mounts 100% done, and I am looking to finish the battery trays and the components going along with them tonight. So far I'm on schedule.

Oh, also. 12s fresh off the charger turns out to be 50.4v
The HV-110 is rated for 50v, although it says it will handle 12s. I should be fine, right?

Castle has a tendency to under rate thier products, and if there is a problem it probubly wont arm but I think you will be ok

So, I have, for the most part, finished all of the basic drawings. Everything is blocky, and there are no holes placed yet, but everything is in place. I have run into a bit of a problem, though. I can fit on a rear brake on the center diff without any problems, but I will not be able to fit one on the front unless I extend the chassis another 20mm (40mm if I want equal weight distribution). The chassis is already extended 62mm longer than the FLM Extended TVPs, so I really don't want to extend it any more. So I am thinking about putting a brake on the output of the front diff. So the question is: does anyone know if there is an existing kit that will allow me to do this? I've done some searching around, but I have had no luck. If there is no kit, I can probably draw one up in Solidworks without too much difficulty, but that means that I'd have to wait longer to finish the drawings, because I'd have to order brakes and measure them and such.
Thanks!

Here are a few pictures of the basic layout for those interested, it's all just basic blocks right now, but I just want to get everything ligned up correctly before I do the holes/reduce the block-age. I personally like this layout much more, plus there's more power in it! I think tht this is just cleaner too, it was much easier to work with SW the second time. If you have any suggestions or anything strikes you as possibly a weak link, let me know.

Trimetric View:


Front View:


Side View:


View without the battery covers or gears (at least, the cylinders that take place of the gears):


And here is what I have for the speed calc, I can get anywhere from 10:1 to 25:1, so I have enough gearing options I think.
Differential Ratio: 3.3076923076923075
Transmission Ratio: 2.3636363636363636363636363636364
Other Ratio: 1
Spur Tooth Count: 38
Pinion Tooth Count: 17
Total Voltage: 44.4
Motor KV: 1150
Tire Diameter (inches): 6.9
Tire Ballooning (inches): 0
Motor Current Draw: 100
Motor coil Ω: 0
Spur/Pinion Ratio: 2.24 : 1
Total Ratio: 17.47594 : 1
Tire Circumference (inches): 21.68 inches (550.6 mm)
Total Motor Speed: 51060 RPM
Vehicle Speed: 59.98 mph (96.34 km/h)
Estimated Adjusted Speed: 55 mph (89 km/h) - 8% loss
Effective KV Value: 1150
KT constant: 1.18 oz-in/A
Motor Torque: 0.61 ft-lbs
Final Torque: 10.7 ft-lbs
Final Power: 4440 watts (6 HP)

[jordan...]

Looks real good, ive been watching this thread and can't wait to see this finished product, should be really awesome

One question, what difference is there between running a 1527/1D (2300kv) on 6s and a 1527/2D (1150 kv) on 12s. They'll both be running the exact same rpms, will one get more runtime or pull more amps or something??

cheers
jordan

in order to make your set up more efficent you not only have to increase your voltage you need to mate it with a higher turn motor (lower KV) or you will get a rather hot motor......

Originally Posted by azjc

in order to make your set up more efficent you not only have to increase your voltage you need to mate it with a higher turn motor (lower KV) or you will get a rather hot motor......

My motor is going to be spinning pretty fast (51k RPM) but it should be fine.

you might want to go with the 1521 instead there is a member on the board who tried a 1527 in a Savage and he didnt like it ...saying you couldnt contol all of the power

here is a link to a post he started

http://www.rc-monster.com/forum/show...light=neu+1527