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-   -   My CRT.5 conversion (https://www.rc-monster.com/forum/showthread.php?t=6417)

IBJAMMIN 04.14.2007 07:57 PM

My CRT.5 conversion
 
3 Attachment(s)
Well I see there is a couple of CRT.5 conversion projects going on here this is what I have came up with. I wanted a car to run the Mamba max motors I have and once I saw the CRT.5 I new it would be perfect with 1/8th scale diff gears and suspension design in a 1/12th scale car it should be a great platform for brushless motors. :)

I have a 5700kv Mamba and decided to go with a 3s 4000hv Maxamps lipo pack to keep the weight down looking at the numbers 50-60mph should be posible and the weight is right at 4lbs.

I went with the Kyosho 46t spur to keep the pinions reliable I stole some parts off my full size CRT the rear aluminum diff mount and drive cup and pin for the diff gear along with the front center shaft off my HPI savage. I also moved the center diff over to the right side of the chassis to get the battery closer to the centerline and also allow more room for a 4-5s pack later.:)

cadima 04.14.2007 08:56 PM

nice truck Jammin. Where's the ESC?

GorillaMaxx360 04.14.2007 09:01 PM

NIce man i like the .5

jnev 04.15.2007 03:19 AM

Very nice!! Looks really clean and ncie set up. Should fly on 3s... :027: .

Where will you mount the esc, doesn't seem to be much more room left.

Sylvester 04.15.2007 11:24 AM

How did you fit the kyosho spur gear on there?

IBJAMMIN 04.15.2007 04:36 PM

2 Attachment(s)
The Kyosho spur bolts right up to the CRT.5 diff the only problem is the bearings. Check out RICEMANS post in the brushless section for the details on how to install the Kyosho spur to the CRT.5 diff. Here is a pic of the parts side by side you can see the diference in bearing sizes.

I'm working on the ESC mount now it's going to end up just above the motor in the center of the chassis. :)

gizzmo79 04.15.2007 05:28 PM

Quote:

Originally Posted by IBJAMMIN
Well I see there is a couple of CRT.5 conversion projects going on here this is what I have came up with. I wanted a car to run the Mamba max motors I have and once I saw the CRT.5 I new it would be perfect with 1/8th scale diff gears and suspension design in a 1/12th scale car it should be a great platform for brushless motors. :)

I have a 5700kv Mamba and decided to go with a 3s 4000hv Maxamps lipo pack to keep the weight down looking at the numbers 50-60mph should be posible and the weight is right at 4lbs.

I went with the Kyosho 46t spur to keep the pinions reliable I stole some parts off my full size CRT the rear aluminum diff mount and drive cup and pin for the diff gear along with the front center shaft off my HPI savage. I also moved the center diff over to the right side of the chassis to get the battery closer to the centerline and also allow more room for a 4-5s pack later.:)

Hi nice truck
Where did you get the motor mount and the battery mount? What kinde of pitch is it on the kyosho spur

andywpj 04.15.2007 08:50 PM

in the future (as soon), Jammin ofna maybe consider E-CRT or E-CRT.5 Version.

this is i know news.

IBJAMMIN 04.16.2007 03:19 AM

3 Attachment(s)
IT'S ALIVE

I just got it done to late to drive it but everything works. :018:

I used the ESC off my CRT so the UBEC was wired in so I decided to leave it makes it easier if I want to play with a 4s lipo later and I like the extra voltage to the servo.

Anyone thinking about this conversion you can probably use the RC Monster motor mount for the Jammin buggy to convert it with a couple of washers under the front diff mount to level out the center diff it will make it alot easier to get the motor mounted up. :)

Sylvester 04.16.2007 03:22 PM

Did you use the CRT mount that mike sells?

neweuser 04.16.2007 03:38 PM

Everything looks great. Glad to see you here. :)

riceman 04.16.2007 06:16 PM

Hey this one looks great. Nice and clean.

IBJAMMIN 04.16.2007 08:48 PM

Thanks this thing is a rocket on 3s I had a chance to run a few packs today and play around with the ESC to get the power to the ground. Temps were right around 140deg in the motor and ESC the battery started to get warm also whitch was strange? It got up to about 120deg when I was running in the grass to see how everything would do with a load.

I made my own mount but used a jammin buggy aluminum center diff mount so with Mikes Jammin buggy mount I think the conversion will be alot easier to do with the Kyosho spur. :)

jnev 04.16.2007 08:56 PM

Looks awesome. Try to get some video, will you. All these crt.5's popping up, now makes me want to convert one.

IBJAMMIN 04.17.2007 12:10 AM

Here's a vid I put on youtube www.YOUTUBE.com/watch?v=DnD6DVYfx2A

BrianG 04.17.2007 12:28 AM

Looks fast! It's funny to see that little thing zooming around compared to the bigger 8 and 10 scale vehicles, lol.

IBJAMMIN 04.17.2007 01:34 AM

It's a little harder to see better then the RC18's though. :)

I need to get some foams for it and try the 44t spur with a 4s pack and see how fast this thing can really go.:005:

I think this is the prefect size car parts are alot cheaper then the 1/8th scale stuff and there avalable when the kit was released WOW what a novel concept I wish Associated would have thought about that before releasing the RC18R I'm still waiting for parts and that was 4 mo ago :mad:1

gixxer 04.17.2007 01:38 AM

that looks great. I hope they make an electric version. If not I will just have to do what you guys are doing and convert one. That probably wont be for awhile though, cause i am going to try 8th scale for the summer.

BrianG 04.17.2007 10:00 AM

I too think it's the PERFECT size. Small enough so it's light and parts aren't stressed as much, but big enough where you can put a standard motor on there and still have room for many battery options. I was also impressed at the build quality and the fact that it uses some 8th scale parts (diffs).

Mr.lst 04.17.2007 10:12 AM

have you got yours running yet Brian?

BrianG 04.17.2007 10:43 AM

Yup, I have all the pics in my thread. I plan on taking it to the local track today to get some playtime. :)

Procharged5.0 04.17.2007 10:44 AM

Nice buggy IBJAMMIN!

Welcome to the forums btw!

jollyjumper 04.17.2007 11:02 AM

haha, he's been here from october '06, lol.

nice truggy btw, little small imo but nice non the less.

Procharged5.0 04.17.2007 11:54 AM

OK JOLLY! You got me!

I saw the handful of posts and thought he recently joined! That will teach me to check the joined date before I respond!!!!

IBJAMMIN 04.17.2007 04:32 PM

1 Attachment(s)
Yep I have been here for awhile LOL

I have a full size CRT conversion also just waiting for the MMM ESC or a software update to run the Neu motor. :)

neweuser 04.17.2007 04:35 PM

I really like the CRT conversions, they are really nice IMO. Have you ran the MM in there yet? Why not a Quark? My Quark and neu run real cool on 4s...

IBJAMMIN 04.17.2007 05:44 PM

I almost went with the Quark ESC for the CRT but with the Monster Max coming out soon I figured I would wait plus the firmware update that has never came to run multi pole motors with the Mamba Max ESC? I did try the Mamba ESC but could never get rid of the cogging issue it runs great but getting it to go from a stand still was the problem with a 10lb truggy. :)

jnev 04.17.2007 07:35 PM

Cool video. Looks like the crt.5 is so much fun.

A couple days ago I was think about if I can have any two rc's... what would they be. I knew I wanted a truggy, but I wanted them to be similar and from the same company. I thought of a brushless CRT and a brushless CRT.5. And then it turns out you have both. :027: Oh my, are you lucky.

IBJAMMIN 04.17.2007 08:26 PM

I think I found some Jaco foams for the CRT.5 there made for the Associated gt t4 and t3 trucks but the size is 3-3/8"od and 1-7/8" wide Tower has the wrong pick but they should bolt right on with a shorter drive pin my GT tires would bolt right on. I'm going to have to get some and see. :)

IBJAMMIN 04.18.2007 07:33 PM

All I gota say is WOW the motor is starting to breakin this thing is a rocket on 3s we clocked it at 56mph with the radar gun and it handled great at speed it just keeps getting faster with every pack.:018:

I think i'm going to have to get another one and convert it over to a speed car with a Neu or LMT motor and go for the 1/12th scale speed record at the worlds fastest RC contest in July.:032:

gixxer 04.18.2007 09:00 PM

just saw this video on another forum and thought it showed the potential of the mini. hope you like it :)
http://www.5spoke.com/site/op/media/...41/fileid/8012

Procharged5.0 04.18.2007 09:03 PM

AWESOME video! Now I want a CRT.5!

I looks like it kept up with the "big boys" really well!

IBJAMMIN 04.18.2007 10:57 PM

Wow that is a great video spanked the 10th scale trucks in the turns and huge jumps. :)

jnev 04.19.2007 12:03 AM

Quote:

Originally Posted by IBJAMMIN
I think i'm going to have to get another one and convert it over to a speed car with a Neu or LMT motor and go for the 1/12th scale speed record at the worlds fastest RC contest in July.:032:

You should totally do that. That would be sweet.

Awesome video you found gixxer.

How much could I get for a used rc18mt running a Mamba 6800 and many upgrades and with spare parts? I really want to convert a crt.5. These things are SICK!!!!

gixxer 04.19.2007 04:38 PM

well I just couldn't resist after seeing these conversions. So I ordered one. Now I will just have to figure out what electronics I am going to run. I think I am going to swipe my lrp comp from my xxx-t and probably put a 7.5 novak motor in it.

Then I have to find a servo. Ibjammin how is that hitec working for you? I checked out the 5245 and they are only $40 so I am thinking of trying that.

IBJAMMIN 04.19.2007 06:23 PM

Did you get it from tower? you can get 30 bucks off there price of 275 bucks? the Hitec servo is working great you can put a larger servo in but there almost twice as much money and dont have much more torque then the smaller Hitec servo. :)

gixxer 04.19.2007 07:06 PM

$35 off of the price. They e-mailed me a code.

jnev 04.19.2007 10:26 PM

gixxer - can you PM or post the code? I need to buy something.... A charger or the CRT.5.:027:

Quote:

Originally Posted by ***RC***
How much could I get for a used rc18mt running a Mamba 6800 and many upgrades and with spare parts?

:)

Patrick 04.20.2007 05:18 AM

Wow, in the 5 spoke video, the main jump was HUGE, but the CRT.5 seemed to handle it and everything else very well....ohh...don't make me buy another car yet :024: , I've got to finish my other ones and get them running properly first :005: .
Yay, tripple didgets (posts).

jollyjumper 04.20.2007 06:37 AM

seems like it goes well from that video, but with jammin jay drivin it could be a shoebox going like that.lol

congrats patrick on the first 100 posts. :003:


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