New Jammin SCRT project. carbon, 1/8 shocks, and mech brakes.
 

hey guys,
i recently picked up a Jammin SCRT and have building it out. Doing lots of upgrades to it and i have a couple questions. i will post some pics of my progress so far in just a bit. but can anyone help me out on these?

1. the center diff of the SCRT is all plastic and doesnt have the metal insert that holds the outdrive as in 1/8 diffs. as a result the outdrives are not centered well and wobble slightly. i would like to upgrade to actual 1/8 diffs but the SCRT diff is quite small. i know the Inferno MP9 buggy uses a very small diff and a couple other buggies do. anyone know if there is a 1/8 buggy diff small enough to fit the SCRT that i could swap? or if you have a MP9 and a SCRT maybe check for me

2. i will be putting mechanical brakes on my Jammin also. i feel this will give me a little edge at the track and bottom line is i just much prefer mech brakes. it wasnt an option with my 4x4 PE but since the jammin uses a 1/8 style layout this will be no problem. i have picked up several of the brake components already from the CRT.5 as it uses the same chassis components but i have one question. Does the CRT.5 use 1/8 size dogbones? the center diff outdrives for the CRT.5 look like 1/8 size but the SCRT uses a much smaller 1/10 size dogbone and outdrive cups. i am just wondering if i am going to have to get new dogbones to run brakes or if these outdrives just look large in the pic but are actually smaller?

http://www.amainhobbies.com/product_...-Joint-Brake-2

anyway, more questions to come i am sure. i will post up some pics in just a bit.

Hi, all the diff cups in the SCRT10 are without metal insert, many people have reportet that the outdrives in the front and rear start to woble after a while, not only the center.
Yes the outdrives and dogbones in the SCRT10 are smaller than the usual 1/8th stuff, at least smaller than the stuff I have/had. No idea on theCRT.5 though, but I wouldn't be surprised if the parts were the same size.
Purely theoretically I would have a neighbour who has a MP9, but they are impossible to get in touch with, so don't hold your breath...

You might want to get some captured rod ends for the steering (TRX2742X) as the stock ones are reported to pop of quite easily.

here are some pics of things so far. these are some custom towers from ERC that allow me to run any type of 1/8 buggy shock. also a pic of how i plan to layout things.

http://i471.photobucket.com/albums/r...james/0312.jpg
http://i471.photobucket.com/albums/r...james/0332.jpg
http://i471.photobucket.com/albums/r...james/0342.jpg
http://i471.photobucket.com/albums/r...mes/0292-1.jpg

The CRT .5 uses smaller sized dogbones and outdrives, same as the Hyper 10SC or Jammin SCRT. My CRT .5 diff outdrives wobbled a bit right out of the box.

I have all the mech brake parts from my CRT .5 that I won't be needing, if you want them let me know.

Also, who makes that spring-flexing rear brace you have? Fioroni? And do you know if it will work on a CRT .5?

Nice, you allready got your set of the ERC towers!
Still waiting for my set, but I guess that will take another 1 to 2 weeks...
And you got your's in silver, I'm hoping for a silver set as well.
Could you tell me when you paid?

And yes, that rear brace looks great, would like to know where you got it as well.

edit: Looks like the fioroni OT-UR319 for the Losi 8ight-T or maybe the fioroni OT-UR612 for the Mugen MBX6.

hey guys,
thanks for the feedback. glad to hear the dogbones on crt are same as the scrt. i will hit you up on the brake parts.

as for the ERC towers i happened to be online when i got and email and saw a post on rctech from Brandon saying the first set of towers were ready. i had paid him within 60 seconds of the first email to go out. i got mine on wed of this week. they are pretty sweet and surprisingly light. but here is a tip. go with the losi shocks or the D8 shocks. both run about 97mm front and 112 rear. i made the mistake of getting mbx6 shocks and they are 112mm front and 135 rear and too long. i have the front mbx6 shocks on the rear for now and will probably just get the d8 set for the front.

edit: oh yeah the rear brace is Fioroni and is their flex chassis brace for the 8ight. they make flex chassis braces for several different vehicles and i have always used them since i first tried them. they make the ride have more more feel and input and just feels more plush around the track. i buy them from amain and just try to choose the one that will fit whatever i am building. they arent hard to make work. just drill a hole in your chassis and mount it up to rear bulkhead where the stock brace would go. sometimes some minor mods may be needed to make work but nothing that takes more than a few minutes. just get everything mounted up before you drill the hole in your chassis so you dont make mistake. also, you can dial in the amount of flex you want by using 8mm washers to limit travel.

Nice, can't wait to see the finished product!

Did you allready mount your shock towers together with the front and rear bumpers?
I have a few small problems at the moment and can't figure out where exactly.

yes, but there is a problem with mounting the bumpers. i did get it figured out and you do have to make a couple little mods but nothing too big. its kinda hard to explain so i will post some pics later tonight when i get home from work and can show you.
you need to use the little plastic "Y" pieces that mount to the stock towers that hold the body posts. cut off the "arms" of the Y so you have just a little square type plastic part. then screw that to you ERC shock tower in the holes where it lines up. now you have the holes needed to be able to mount up your bumper. now you may need to drill a hole in your ERC tower or grind away a little portion so you can mount the bumper brace up right. i had to grind away just a tiny, tiny bit for the bumper screw to fit through and put locknut on back side of tower. hardly noticeable and completely un-noticeable when everything is mounted up. anyway, thats what i did essentially but i will post some pics up later so you can see better.
i actually havent mounted the rear bumper yet but got the front all mounted and it looks good.

Ok, thank's.
I'm looking forward to the pics.
As for the rear towers, what have you done to fit in the rear braces (40947) to the tower?
Grind them off? Put the part that holds the braces further to the front?

are you talking about the little crescent moon shaped parts that connect to the rear tower and to the top of the bulkhead by the chassis brace? that part number you gave is for a parts tree and has several different parts on it. anyway, if that is the part you are referring to they mount up just fine with no mods required. do you have your tower facing the right way? flat side facing in. machined side facing toward rear bumper.

Yes exactly those parts.
Yes, the shock tower is facing the right way.
If I mount these crscent moon shaped parts to the rear shock tower, they are 1mm too far to the front.
I guess I will take a picture of what I mean later today.

hmm...if you look in the pics i have posted in this thread you will see mine mounted up fine. if they are 1mm pushed forward then cut off 1mm on the backside where the 2 screws go into each one. that should do the trick. or just jam 'em in there. lol. maybe thats what i did but i dont recall them not fitting right. i will have to double check that...

and sorry i havent posted more pics but my frickin camera wont work.

Well, mine don't, but Brandon (Hi there silent reader!) just mailed me that I have to grind 1,5mm off of the crescent brace parts. By my measurements 1mm should be enough, but those measurements weren't taken in that a precise way, so I'll just start taking off material and check from time to time if it fits.

No problem with the pics as for the front I'll wait till I have decided what front bumper I'm going to take. Thought about the T-Bone with a RPM front part, so it is tough and looks OK. But then you wouldn't be able to see the beautiful tower any longer....

thats exactly what i did. i have a tbr front bumper and rpm slash bumper mounted to it. but actually it turns out the rpm slash bumper mounts up directly and then fits to the tbr cross brace. i will post pics when i can. turned it good.

for the rear i am using a tbr rear and losi lst rear bumper mounted to it. has a pretty cool look and requires no mods to my manta body.

Sounds interesting, but I can't really imagine what you did there.
So, let's see some pics :yipi:

By the way: What do you think about the STRC parts?

Ryu: what are your initial thoughts on the Jammin kit? Advantages over the Slash 4x4 besides that it based off a buggy platform(CRT.5)?

I'm thinking had about possibly getting one to fix up as well.

i like the jammin kit so far but i havent driven it yet so we'll see. i traded my slash for a Losi Ten T with a RCM conversion and i plan to convert that to a SCT. i do like the jammin kits layout much better than the slash. however, the jammin uses ball cups instead of rod ends and has a couple other cheap parts. i have been upgrading all of these parts in my build as i have heard nothing but issues with some of the stock parts. i think out of the box the jammin outperforms the stock slash on the track but the slash is much tougher.

I am racing a scrt10 now changed the ball end to screw on n everything is still stock. Even the setup is stock but yet it performs.

Are you running 17mm hexes?

sorry guys, still dont have a working camera but almost done with my jammin. i got a Ten T i am working on now too. i will try to get some pics up this weekend.

jofreak, did you figure out how to mount up the front bumper with the ERC towers?

Not even a camera phone?
I really can't imagine what you did with the tbr and slash/RPM stuff.
Wouldn't need high quallity pictures to see what you did there.

ok. here are my pics of the front bumper setup. i used a 4x4 slash rpm font bumper, a TBR bumper brace, and the stock plastic shock tower part.

first cut the arms off the "Y" shaped stock part. i shaped mine to be the same shape as the tbr brace. then you need to use a dremel or 1/8 drill bit and grind out a tiny portion of material from your ERC tower where you see the screws with purple locknuts mounted in the pics.

mount the plastic piece to your ERC tower through the bottom holes that mount to the top of the bulkhead.

http://i471.photobucket.com/albums/r...ujames/002.jpg
http://i471.photobucket.com/albums/r...ujames/003.jpg

then mount your tbr brace through the top holes of the plastic part and through the tower. secure on the back with locknuts.

next, mount up the slash bumper. the stock holes line up close enough to just mount to the chassis.

line up the holes in the tbr brace to your slash bumper and drill 2 holes. counter sink, and then screw it together. viola! (the wire you see in the pics is my AMB transponder)

http://i471.photobucket.com/albums/r...ujames/007.jpg
http://i471.photobucket.com/albums/r...ujames/006.jpg
http://i471.photobucket.com/albums/r...ujames/005.jpg
http://i471.photobucket.com/albums/r...ujames/012.jpg
http://i471.photobucket.com/albums/r...ujames/008.jpg

here are just a couple of quick pics of the layout. nothing is mounted up yet but i should have it finished tonight. i decided not to do the carbon parts yet. i have a TenT i am building and will be using carbon for that build. anyway, cant wait to race my jammin. the TenT rear shocks on the front are very responsive and feel great.

http://i471.photobucket.com/albums/r...ujames/011.jpg
http://i471.photobucket.com/albums/r...ujames/010.jpg
http://i471.photobucket.com/albums/r...ujames/009.jpg
http://i471.photobucket.com/albums/r...ujames/008.jpg

so i actually got my jammin finished and raced it this weekend. to answer your question from experience now the jammin has nothing on the slash 4x4. mind you, my slash was decked out fully but i liked it better....so far. i am going to continue to tweak my jammin and get it dialed in and i am sure i will like it but my lap times were fast with the slash.

one plus to the jammin though is the mechanical brakes i hooked up.

one big negative on the jammin is the chassis catches any rough spots on the track and send you flipping. this was happening to me and my friend who was driving his jammin for the first time. his was all stock with the Chad Bradley settings. where the chassis angles outward from the nose as it gets wider would catch the ground and just dig and flip. need to find a way to fix this. going stiffer springs and fluid changes your handling but might be the only way.

here are some pics of my finished jammin. still need to get front brakes hooked up. and i didnt end up doing any carbon on this one. saving that for my ten t build.

here are the pics
 

http://i471.photobucket.com/albums/r...ujames/046.jpg
http://i471.photobucket.com/albums/r...ujames/048.jpg
http://i471.photobucket.com/albums/r...ujames/049.jpg
http://i471.photobucket.com/albums/r...ujames/050.jpg
http://i471.photobucket.com/albums/r...ujames/052.jpg
http://i471.photobucket.com/albums/r...ujames/054.jpg
http://i471.photobucket.com/albums/r...ujames/055.jpg
http://i471.photobucket.com/albums/r...ujames/056.jpg
http://i471.photobucket.com/albums/r...ujames/058.jpg
http://i471.photobucket.com/albums/r...ujames/057.jpg

Nice, what did you use for the rear bumper and what shocks are those?
Mechanikal brake parts are from the CRT.5 I guess?
Centerdiff CF top plate from the CRT.5 as well?
Did you make the upper steering plate yourself?
Slash front or rear offset on those wheels?

Don't you think the ESC switch is in a disadvantageous location?
Especially if it is in the off position as shown in the first picture.

Lot's and lot's of questiions, I know...

rear bumper is a TBR skid with the losi LST bumper screwed to it.

front shocks are losi Ten T rear shocks

center top plate and brake parts are all from CRT.5

front top plate i made from 2mm carbon

regular slash 4x4 wheels

the on/off switch i moved. i just put it there for the pics. but i knew it wouldnt last long there.

tonight is race night and i have made some adjustments from last week. i am hoping it drives a bit better tonight and i can get it dialed in.

on another note my Ten T is coming along. Got my carbon shock towers started on last night. i will start a new thread on it soon.

last night was race night and i still had some tweaking to do. i qualified 3rd on the night but then after making some final adjustments smoked everyone in the main. my esc shorted somehow with 20 seconds left in the race and i was out of commish for about 15 seconds. since i had lapped everyone i still won as i ended up with more laps than all the other drivers.

needless to say i am happy with this build and after 3 weeks of tweaking and tuning finally got it dialed in. woot!!

recent pics!
 

got a new body mounted up on the jammin. then my track tells me that i cant use it cuz it doesnt cover the wheel wells. anybody with a jammin interested in this body?
i really like it and its more aerodynamic. the other thing thats cool is the side of the body sits inside the chassis mudgurads so it really keeps the inside of your ride clean.

http://i471.photobucket.com/albums/r...mes/0102-1.jpg
http://i471.photobucket.com/albums/r...mes/0112-1.jpg
http://i471.photobucket.com/albums/r...mes/0122-1.jpg
http://i471.photobucket.com/albums/r...mes/0132-1.jpg

Well that sucks that you can't run the body at your track.
I think it looks great and I would be interested. But with shipping to Germany this would cost probably more than buying a new body and the needed colours here.

How are the mech brakes working for you?
Do you think you could write a list of all parts you used fo the mech brakes for me?
At the moment I'm thinking about using this option my self...

i love the mech brakes. this is the cheapest way to get everything you need for mech brakes: http://cgi.ebay.com/OFNA-JAMMIN-CRT-...item1c13c1fb62

just buy that and then you just need to mount your brake servo. i used tekno servo mounts to mount mine. measure, drill 4 holes in the chassis, and youre done.

Where's the website for the ERG scrt10 parts?

They are ERC towers but he only made 100 sets and they are all gone. he primarily only makes motor mounts. his website is elitercd.com and he is always on rctech.net with username longbill76

if you want i can make you a set of carbon fiber towers. i will pm you pricing. just let me know.

The ERC towers are pretty nice but mine bent cuz they have too many holes in them for shock positions. it really weakens the aluminum in that area. I now have carbon ones with like 3 different mounting options and they have held up much better.

Emailed erc but no reply, I got SNR to do a custom rear shock mount for my scrt10 instead. So far only STRC n SNR reply emails.

have you already paid SNR for the carbon shock mount? i can make you a fr/rear shock tower set using much better carbon than SNR uses. I use a 1k fineweave which has much tighter weave than traditional 3k like SNR uses. nothing against his products as i am sure they are great from what i hear. just thought i would offer. pm me if you want a quote. thanks

What's your email address?

why would u want ur rear brace to flex, dont understand, the chassis is stiff

hello all i just got my esc installed in my scrt10 ,its a tekin rx8 with a pro4 4000kv motor,tall shock tower mod and sc10 4x4 shocks,strc steering , cvds ,bead lock wheels,ready to put it on the track.