Will a fast-back II chassis work for my ridgecrest??

[axial 4x4 crawler]

Hello,
I've done a build on my ridecrest before but recently I decided to take the older build even further. I plan on buy the underground fast back two chassis (black) but before I do I need some important questions answered. Let's start, eh? My ridgecrest is using the stock axles that are upgraded but I'm going to buy V.P. alum. axle housings soon, but I got thinking....Would a set of super-bully axles be good? (M.O.A.) I'm gonna put a tekin Fxr pro with a 45t motor in it or I can switch over to moa. Here's my upgrade list so far:

- Under-Ground crawlers F.B. ll chassis (Black)
- Tekin fx-r w/ 45t H.D. motor
- Hot Racing internal "air" shocks 120mm
- V.P. Alum. transmission cover (orange)
- RR solid gear outdrive (diff) gear
- RR input steel gear
- V.P. alum. Axle x2 - (black)
- V.P. Diff covers 3d type x2 (gun metal)
- V.P. shock alum. mounts x2 (red)
- V.P. Diff locking caps (red) x2 alum.
- axial H.D. Differential gear x2

As you can see I'm putting a lot more into my ridgecrest but I'm doing this over building a super. I don't have time or money to mess around with a super build...that's why. So what do you think? Hmm...if I get a F.B. 2 chassis, how will I mount a 2s on the front axle? Do they make 2s lipos that will fit on a custom plate? I'm just tired of the old chassis and a bodiless chassis will be nice. Keep in mind that you can find my old thread about the build I did. As of right now my ridgecrest crawls okay, I have H.B. Rovers on them with weight in the front and back tires but it will need tuning over time. Thanks for your time, -axial 4x4 crawler

 

[redsawacs]

I did it last year. It was so awesome, it was stolen 2 weeks before Christmas

http://www.rccrawler.com/forum/axial-ax10-2nd-gen/448081-project-dagger-crestcrawler.html

 

[axial 4x4 crawler]

Oh that sucks that it got stolen but thanks for the link, I'll defiantly take some tips and go off of your thread. Thanks man, -axial 4x4 crawler

 

[Dostradamas]

Yes
After this build/conversion I decided I wanted ax10 / scx10 axles.
http://www.rccrawler.com/forum/axial-wraith/444978-fastback-ii-used-wraith.html
I very much like that chassis & Juan is very easy to deal with.
Hurry tho if you want one, last I heard they are almost gone......

 

[axial 4x4 crawler]

Alright I will, thx. What will I do for links? I can't make my own..I don't have the stuff to do it.

 

[666]

Links are easy to make, threaded rod (hardware store) brake line (auto parts store) rod ends (hobby store) hacksaw (daddy's tool box)

It's all in what you want to do.

 

[Dostradamas]

Alright I will, thx. What will I do for links? I can't make my own..I don't have the stuff to do it.

I used stock wraith length links in the rear & then measured what the lowers would need to be to get me in the 12 to 12 1/2" wheel base.
After I had the front lowers on I then could measure the exact upper length needed.
Traxxas 5319 Black Steel Push Rods Pushrods 2 1 10 E Revo New | eBay
These are 125mm eye to eye & steel so real cheap & tough. Get some of these & an m4 die & with a vise you could cut & thread these down to whatever length you need in front.
You could also get one of the many vendors on here to make a set once you get the lengths.
or Vanquish
Titanium Links

 

[axial 4x4 crawler]

I used stock wraith length links in the rear & then measured what the lowers would need to be to get me in the 12 to 12 1/2" wheel base.
After I had the front lowers on I then could measure the exact upper length needed.
Traxxas 5319 Black Steel Push Rods Pushrods 2 1 10 E Revo New | eBay
These are 125mm eye to eye & steel so real cheap & tough. Get some of these & an m4 die & with a vise you could cut & thread these down to whatever length you need in front.
You could also get one of the many vendors on here to make a set once you get the lengths.
or Vanquish
Titanium Links

Well thank you. That helps me a lot. I'll most likely get the revo pushrods and go from there. Will I need to bend the pushrods??? Bad thing is that I don't have a vice so I might have to find already threaded links and go from there. I'm kinda nervous about this, my ridgecrest already has v.p. Links but they won't work with the new chassis. I just don't know how to properly bend then...I'm not in a fabrication shop, I only use basic tools lol.

 

[axial 4x4 crawler]

Links are easy to make, threaded rod (hardware store) brake line (auto parts store) rod ends (hobby store) hacksaw (daddy's tool box)

It's all in what you want to do.

So the brake line goes into the threaded rod and then the rod ends go on the brake line? Just making sure. Bending the links is another story haha.

 

[axial 4x4 crawler]

Hmm... Will a wraith tranny be better than the scx10 type transmission? I would rather drop a wraith transmission it cause there are a bit more stronger with rrp gears. I won't put a dig on this nor will I make it a rear steer. Where will the battery mount? That's one thing I can't figure out. I saw on your build thread (Dostradamas) that it had a custom servo/battery mount on the front axle, well how did you measure that? Haha

 

[Dostradamas]

I am a get parts & try, then try again, then get pissed & try some more.
SREAMMMMMMM!!!!!
Take a break, drink a beer (puff, puff, pass) then try again.
Get more parts & repeat.
I have a German friend that has a rough time with anything that does not just fit & work.
I almost never have anything fit & work perfect the first time.
I just keep at it until I conquer the issue.

http://www.rccrawler.com/forum/axial-ax-10-scorpion/496506-so-i-started-another-sporty.html
Battery on the front axle seems the best spot.
Lots of trial & error & even more reading & looking at how others have done it.

 

[axial 4x4 crawler]

I am a get parts & try, then try again, then get pissed & try some more.
SREAMMMMMMM!!!!!
Take a break, drink a beer (puff, puff, pass) then try again.
Get more parts & repeat.
I have a German friend that has a rough time with anything that does not just fit & work.
I almost never have anything fit & work perfect the first time.
I just keep at it until I conquer the issue.

http://www.rccrawler.com/forum/axial-ax-10-scorpion/496506-so-i-started-another-sporty.html
Battery on the front axle seems the best spot.
Lots of trial & error & even more reading & looking at how others have done it.

Yeah you're right about the battery on axle. I'll some how make my own mount out of aluminum and some how bend it. I might just try my v.p. links that are already on there for the hell of it and if that doesn't work then I'll get some non-bent ones to measure and cut from v.p. What 2s battery would fit on the axle?

 

[redsawacs]

I use turnigy 2s/3s 800mah batteries...wait until you finish up the build before you buy batteries.

You will need to measure the area for the battery to determine what dimensions on the battery will fit.

Hobbyking.com has specs listed on all their batteries if you choose to buy there.

 

[Dostradamas]

wait until you finish up the build before you buy batteries.

You will need to measure the area for the battery to determine what dimensions on the battery will fit.

Very good advise.

I am hoping to work one of these in.
http://www.rccrawler.com/forum/axle...10-front-axle-battery-mounts.html#post2875482

 

[Dostradamas]

I have one of these on my FXR.
Running this with 3s batteries gives me the speed I want without any heat issues.
Early tip I heard & used & now agree with, "volt up gear down"
Once I went 3s I wont go back to 2s on a crawler.
http://www.crawlerinnovations.com/i...ategory_id=22&option=com_virtuemart&Itemid=80

 

[redsawacs]

Not to mention, using 3s allows you higher voltage to your servo. A 2s will only truly support 6.0V....a 3s can get you up to 7.5v without hesitation. Most servos will cut out any higher than that since you're upping the amp draw and dropping voltage across the system when you go too high.

 

[axial 4x4 crawler]

I use turnigy 2s/3s 800mah batteries...wait until you finish up the build before you buy batteries.

You will need to measure the area for the battery to determine what dimensions on the battery will fit.

Hobbyking.com has specs listed on all their batteries if you choose to buy there.

Oh alright..I'll do that then. Thanks! I think that the U.G.C. Fast back 2 is out of stock, it won't open on my ipad...strange.

 

[axial 4x4 crawler]

I guess it will have to depend cause I'll most likely get a small 3s lipo and make me a mount for the front axle. And I knew about the voltage to the servo haha..that's why I'm going 3s. Well..I think the F.B. 2 chassis is out, what am I going to do now?!? Hot racing makes a bodiless type chassis but I'm a bit nervous buying cheaper stuff. Any other chassis out there that will work? And no I can't make my own...I don't have time or the money to do so. Thank you guys,I apperciate all the help! -axial 4x4 crawler

 

[axial 4x4 crawler]

Just to mention I have already put about 400 into this ridgecrest, add about 650 for everything in the part 2 of the build this thing has eaten my wallet! Let's just say it will have about 1300 into it after I'm done with these upgrades!!lol

 

[C*H*U*D]

... I think that the U.G.C. Fast back 2 is out of stock, it won't open on my ipad...strange.

I sold one a bit earlier, and show one left. Not sure why your iPad isn't working.