And I also agree with you two on HV setups :yes:
I wonder how much runtime I'll get with 12s 5000mah? Probably quite a bit :whistle:

Now it's clear for me :lol:. Just awesome. Can't wait to see it come to life.

It will be a little on the heavy side, but being able to keep AMP draw to around 60A max spikes would give you about 1 hour or so.

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

Well, I already have the 1527 ordered and they are making it for me so I don't think I can turn back now. My truck is most likely going to be heavier than his so maybe it'll be able to handle the power better. I can also have the slipper set a bit looser than super tight (so just tight). If it ends up being too much to handle, I can order a 1521... but hopefully it won'tbe!

I did a forum search on the Neu 1527 and a lot of posts came up...there was a lot of info if you are intersted

Thanks for the heads up. :yes:

So.. plans have changed, again! :lol:
Why can't I just stick with one plan?
So I'm changing the design because a few reasons:
I don't want the batteries to stick out of the sides of the chassis
The brake system that I had planned was just a bit weak
The design that I had was a bit too complicated and would be extremely hard to put together/do maintenence on.

I have a new design in my head, and it is a little bit different, but not by much. I am also going to be using this new platform to create a Savage/Truggy hybrid as another project as well.

I'm throwing myself on a rollercoaster, but this should be the last one! I hope. I just want to get it right the first time, as I'm a bit of a perfectionist at times... :whistle:

its better to have second thought before you sink some money into the project than later...Good luck with your endevour.......:yes:

Haha thanks. This new design that I am working on should be much better (imo). Much more simple. Not only will it be easier to work on, but it will also probably cost much less to get machined, which is a big plus! :yes:

Well my new design is almost finished! I'll probably have the whole basic drawing done tomorrow. :yipi: It is a bit.. unconventional and different than anything I've seen on a Savage, but you all will see that soon. :lol: I'm also switching to running 2 6s Zippy-R 4800 mah packs as my Dad is going to buy my Thunder Powers from me, so that has affected the layout of everything considerably.

I need to start looking for a body for it though, as it is going to be 30mm longer than the FLM extended LCG TVPs. (70mm over stock, I think?) The Savage XL body is a little bit too short, it would probably fit if I didn't have to fit it around the LST shocks, but there's no way I'm taking off those beefy things. :angel: So does anyone know of a body that isn't 1/5th scale, but long enough to fit this large of a truck?

I rekon a genesis sized body would work since its wheelbase is 60mm longer than the stock savage (397 verses 336.5) and is also 7mm longer, in wheelbase, than the XL which you said was a bit too short. Hope this helps.:yes:

Oh yeah, I forgot about the Genesis. Thanks, that should help a lot!

No problem, glad that helped I've got one coming for my flm savage, not quite as long as yours though:yes:. Good luck with the project.

yep i run the genesis body on my flm and the front is just behind the bumper as is the rear. So this should give you plenty of leeway for your chassis.

edit- look at my avatar, that is the genesis body on the FLM conversion. The rear is just as close to the bumper.

Looks like a Genesis Body is on the top of my list now, then.
Thanks again guys. :yipi:

oh forgot to tell you though that escalade body is the longest. That is the style on my truck link here - http://www3.towerhobbies.com/cgi-bin...2&I=LXPCG5&P=K some genesis bodies are shorter. Just look at the lengths to see how shorter.

Oh alright, thanks for the info. :yes:


I'm also going to post what I have for the speed calc now, mainly for my own records, since things tend to get lost on my hardrive... :neutral: (It's those cyborg lawn gnomes with USB connections, I say!)

Differential Ratio: 3.3076923076923075
Transmission Ratio: 2
Other Ratio: 1
Spur Tooth Count: 38
Pinion Tooth Count: 14
Total Voltage: 44.4
Motor KV: 1150
Tire Diameter (inches): 6.9
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 2.71 : 1
Total Ratio: 17.95604 : 1
Tire Circumference (inches): 21.68 inches (550.6 mm)
Total Motor Speed: 51060 RPM
Vehicle Speed: 58.37 mph (93.77 km/h)
Estimated Adjusted Speed: 54 mph (86 km/h) - 8% loss
Effective KV Value: 1150
KT constant: 1.18 oz-in/A


Hmm, I just found this body for the MGT http://www3.towerhobbies.com/cgi-bin...?&I=LXFUL9&P=7
It says it's 20 inches (shorter than the Cadillac for the Genesis) but also says its 556mm (longer than the Genesis one).
Hmm...

i dont listen to descriptions usually. the specs say it is 20" and the one i linked is 20.5" so very little difference

Awesome project you've got going there dude!!

Thanks! :smile:

I'll try and see if I can finish the drawings tonight. School is starting up again soon for me, and I've been trying to squeeze every last bit out of my summer.

Update! (finally :lol:)
I finished the basic drawings of my new design. It took way too long, probably because I changed my mind a few times.. again (this is the last one, I promise! I'm fully satisfied with this). I have to change/add a few things (front kickup being one of them), but this is the basic layout of everything. I still have to wait on a few things in the mail before I can add the radio tray, brake mounts, rollbar, and a few other things. I will also take out much of the "TVP"s once I get all of that other stuff done, to significantly lighten it all up. There's more good news: It will end up being only 10mm longer than an FLM kit with this design, and I'm sure the CoG will also be much lower. :yipi:

Without further ado, here are the pics!

Trimetric:
http://i278.photobucket.com/albums/k...2sDrawing1.png

Rear:
http://i278.photobucket.com/albums/k...2sDrawing2.png

Side:
http://i278.photobucket.com/albums/k...2sDrawing3.png

Top:
http://i278.photobucket.com/albums/k...2sDrawing4.png



Hope you guys like it! I know I do! :yes:

That looks damn nice!!

Nice project!

...very cool...i DO like it...so did you get your 2008 resolution done? :D As the first post of 2009 I ma looking forward to hearing how its going...Thanks for all the work you have out into it and thanks for letting us watch as you go along...An education and an inspiration all at the same time...Great stuff...

This project is not done but I am determined to finish it very soon, I have the final design in the works and will hopefully have the drawings done in a week. This new design is definitely the last one, and also the best IMO. It is still going to be run on 12s with the NEU 1527 2D and will have the same wheelbase as the Savage XL. It will be overkill. It will probably kill someone. It's out of my hands now. :lol:

Question though, does anyone think that the slipperential will be able to handle this power? I plan on using it but I'm scared... so scared. :eyes:

The basics of the new design are done so I thought I'd post a picture of it to get some feedback, any comments, questions, or criticism are welcome! This is just the basic outline of it, I will be scrapping weight off and have to add holes and mounts and such, but you can get an idea of where I'm going with this. :yes:

http://i278.photobucket.com/albums/k...arlyRender.jpg

Way cool. Don't you think the motor shaft is too close to the bearing holes for the CD? Or are you running a tiny spur?

I'm running a 46 tooth spur on the slipperential, then I'm going to be running a shaft with a 10 tooth pinion and a 15 tooth pinion on it for gear reduction, so effectively my "spur" is going to be 15 teeth. The space is measured out to accommodate a 9t pinion up to a 17t pinion, and if I need to go higher than that, I can also always change the spur to be lower as well.

Also, I have made some progress on the drawings and will post up another version tonight/tomorrow. I think I've done it right this time. :yipi:

Here is an update for anyone that's interested. All that's left are servo mounts, radio/eLogger box, and the esc mount.

http://i278.photobucket.com/albums/k...rlyRender2.jpg

It's looking great!

The width between the TVPs, does that correlate to the bulkheads? Looks a bit narrow to match the stock chassis width.

I'm interested in seeing bulkhead mounting holes put on the skids :intello:

Thanks! And yeah they are about 10 mm narrower than the bulkhead's width, but I designed little brackets to narrow it down, they are shown on the first pic, but I had them hidden on the second one on accident. :sleep: I may beef them up a little bit but I think they'll do.

What thickness will the brackets be?

They are 5mm thick where they mount to the bulks and then they extend to 10.25mm where they mount to the TVPs.