Project Jammin X2CRT-Pro electric
 

Hi !

I have been waiting for long time to get new project to started.

For 2 weeks ago I got my Jammin X2 CRT Pro ( Hongnor X2CRT Pro ) with no motor or electric parts included exept steering and throttle/brake servos from Finland.

Two days ago I bought these parts:

- Tekin RX8 ESC with T8 motor ( truggy 2250kv ) .
- 2 x Flightpower 3S ( 11,1v ) zippy's ( 30C ) .
and hotwire for ESC.

I have been heard that zippy's and some other low price LiPo's have been puffed and overheated because of motor braking problems, so I have been planned that I would install mechanic brakes with throttle/brake servo, and put 3 shoe 1/8th scale clutch with this conversion kit from Impaktrc:

http://www.impaktrc.com/product_info...oducts_id=3523

Its not only reason why I have been planned that conversion kit, it will not only reduce heat, I am interested about the smoothness of the nitro truggys and buggys, I am not trying to do bashing car.

Because I don't like pop the wheelie all the time in the air, I have already in my car Jammin ( hongnor ) super-torsen differential, that would reduce that effect even at high speeds.

Now here is some pictures:

http://www.aijaa.com/img/t/00261/4442149.t.jpg

The quality of RX8 and T8 is sweet, I was like WHOA when I just opened the package first time :yipi: !

http://www.aijaa.com/img/t/00502/4442154.t.jpg

http://www.aijaa.com/img/t/00919/4442187.t.jpg




Sorry about low quality.


I will take more pictures ( maybe with better camera next time ) when I get more parts and stuffs soon, 3 channel radios and the conversion kit have not yet ordered. Maybe some videos coming when I get car ready to drive.

More informations and specs coming soon.


:smile:





- Tapio.

I probably would've gotten the 1700kv motor since it would be running on 6S. It would spin at 38k rpm, which is probably better than the 2250k spinning at 50k rpm.

Then again, I'm using a MMM 2200 on 6S, and have had no problem.

I can use advanced settings with hotwire to reduce the power settings with computer if needed, its not problem I think so. I just got that ESC combo easily so I didn't wait that I would get 1700kv motor.

What do you guys like my project ? I try to make my car pretty fast and still smooth to drive if its possible with that motor and those batteries.

Looks good so far. The question now is, how are you going to mount the electronics?

RCM motor mount is an obvious choice, as well as the RCM battery mounts. Though I suggest to put the batteries at the rear, on either side (saddle-pack style), and the motor with the esc up front. See my layout below.

In my experience, this provides good balance. Also, having the motor/esc weight closer to the front end helps lessen wheelies.

http://www.ronnbot.com/sites/default...p/P5092164.jpg

How about this one conversion kit for my X2CRT :) http://www.impaktrc.com/product_info...oducts_id=3523 ? I was meaning that I will may be buy that conversion kit as soonest as possible, meaning about 2 weeks.

If there is another smart possibilities to make other kind of conversion with 3 shoe 1/8th scale clutch and mechanical brakes I am interested to hear ideas :) . Its really hard to make homemade-conversion if you are interested to do conversion with clutch and mechanic brakes, thats why I am interested about impaktrc:s conversion kit. The mechanical brakes are not hard to make, clutch conversion is. Thats why.

Nice and clean conversion flipmac ;D .

Today I bought 3 channel 2,4ghz radios, futaba 3PM. In next week I am going to buy impaktrc:s v3 kit. I need to get also 4S batteries in next week.

And 10 awg cables are also coming with 10mm hxt gold connectors, I think that those cables and connectors are enough :D .


- Tapio.

TeknoRC kit c3 has been orderer, will come at next week. batteries have been ordered from hobbycity, 3 x 4s 5000mah 30C pakcs - would be enough :mdr: !

That makes about 33.000 rpm with 2250rpm motor.

Electric clutch, bearings and some other stuffs have been ordered too.


-Tapio.

Sorry to tell u heat issue is not due to motor braking it's usually due to undergear or overgear. I run a 6s 5000 zippy n 1600kv medusa finish a 40min main vs nitro no heat issue.

Also manage to get 3rd. I dun like mech brakes due to difficult to repair if race break down n extra weight.

Ok. Anyways I will use mechanic brakes because I ordered that conversion kit, and its not the only reason why I choosed teknorc's v3 kit, the main reason is that I can use electric clutch wich is very good choise to increase smoothness when driving.

The 4s with 2250kv is good choise I think so, not too much power to handle when driving.

The teknorc's v3 conversion is also very nice and clean conversion kit so that is one of the reasons too :D . Im trying to make clean conversation and good car to race without heat or gearing problems.

For smoothless I use rc monster slip diff much better then d clutch system can tune using diff oil or tightness. Clutch system still need clutch shoe n spring.

The slip diff is not ideal for my use because then I can't use torsen differential in the middle of the car, and I won't remove if its not needed.

If the clutch system is not good, I can remove the shoes and spings to better ones, there is also many kind of springs and shoes to choose.

Hv u tried torsen on BL before can they take the torque n power? I read in some thread it can't take it. That's y I use regular diff n center slip diff

This is conversation with medusa 80mm 1600rpm and 4-6s lipos. http://i92.photobucket.com/albums/l1...o/IMG_3816.jpg , http://www.rc-monster.com/forum/show...t=16816&page=2 . It takes the power easily, no problems at all. That means you don't have maybe correct information. I won't remove the center torsen, it is good differential and it can handle the power in the same way like regular differential aswell.

That is good reason to use torsen, slip differential is not my thing and not good for my use.

i m not here to challenge u, i m just telling u what has been tried by many n winning races.

u have not tried how do u know its no good? anyway its ur car at the end of the day its the skill of the driver not the car:)

I will go with EK4 on this one, no one is challenging u on your ideas, but since you posted on a forum that consist of what some people would call brushless experts, if your not willing to listen and shoot people down for giving constructive criticism, post on another forum!!

Excuse me ? I am not trying to disable other choises like slipperential to replace center diff, I am just not interested to put it to this project. And yes I have some experience with brushless motors and speedcontrollers, I have just my own ideas and I will use torsen because its fantastic choise to this project.

I know that peoples don't like teknorc conversion and torsen differentials because they are not mass production kit like any other stuff but it is not a reason to criticise my ideas or my car project.

Criticism is okay but disrespect is not okay.

If you don't like me, then be quiet. I am friendly but I don't like agressive peoples.


I am here to tell about my own project and get some information and tips, I just don't mind some ideas what are not suitable to my use. You can tell me some ideas if you have some, but its not meaning that I am going to use them.


The idea of using torsen differential is from my friend from Finland, and yes, I can say that he is some kind of "professional" and yes, there is alot of peoples who are using torsen differentials, I am not only one.
There is also very much peoples who like teknorc desing, its good thing. I like the desing, thats why I choosed it.

There was no other ideas like slipperential what I don't like, I took the tip with battery and motor selection and now I am waiting to get 3 x 4S batteries. It makes sense to use 4S with 2250 rpm motor, that was great idea and I am very glad to get that information.

I hope that you and superek4 can understand me, this choises are just my own selections to make this project done.


Tires are not ballooning and popping the wheelien on air every time when pulling the trigger to 100% or using high rpm, thats one of the simpliest reasons to say why I like torsen more than slipperential or normal kind of differential. When you use regular differential the car is under-steered, professional drivers have used that style for years, thats why they are not using torsen because it makes car over-steered and they can't drive with that style or they don't like it because its harder to drive with it.

How about wires ? I think that 12 gauge ( awg ) cable is not enough for truggy conversation... Should I use 10 gauge ( awg ) cable in this project ?

12ga is fine as long as you keep your wires relatively short.

Thanks BL_RV0 ! Nice to hear. I have some 12ga wire, and I will get some 10ga wire soon too.

I didn't mean to be aggressive, and i understand that u have your own choices, just when i read some of your posts, the way some of it was worded led me to believe you were being "arrogant" to everyone else's ideas. My mistake for my confusion.

The conversion kit arrived at last !

And so I got some 8mm HTX-gold connectors too ( very hard stuff ) .

More information and pics coming soon:party:

Now the conversion kit have been installed, allmost everything is ready but radio tray is not installed yet.

http://www.aijaa.com/img/t/00399/4592161.t.jpg

after.

http://www.aijaa.com/img/t/00478/4592256.t.jpg

with body.

http://www.aijaa.com/img/t/00592/4592407.t.jpg

ESC and motor, motor is kinda heavy, 400 grams.

http://www.aijaa.com/img/t/00086/4592006.t.jpg

The quality of conversion kit parts is very good and suprising and clean work.

http://www.aijaa.com/img/t/00690/4592175.t.jpg

The torsen differential with 46T spur gear.

http://www.aijaa.com/img/t/00447/4593394.t.jpg

The quality is perfect.


http://www.aijaa.com/img/t/00001/4593398.t.jpg

Now some parts have been installed and you can see that middle differential is closer to front.

http://www.aijaa.com/img/t/00601/4593416.t.jpg

Brake linkages have not been yet mixed right.

http://www.aijaa.com/img/t/00189/4593419.t.jpg

Middle support is nice and clean.



I hope that you like it. Comments are welcome :smile: .


- Tapio.

http://www.aijaa.com/img/t/00710/4593422.t.jpg

http://www.aijaa.com/img/t/00707/4593435.t.jpg

Battery tray would be better but this is good enough.

http://www.aijaa.com/img/t/00872/4593437.t.jpg

http://www.aijaa.com/img/t/00788/4593440.t.jpg

http://www.aijaa.com/img/t/00681/4593445.t.jpg

http://www.aijaa.com/v.php?i=4593443.jpg

- Tapio.

Thanks to Jesi because he have been helped me alot with tecnical issues ;D .

Radio tray is kinda small with ESC and receiver.

http://http://www.aijaa.com/v.php?i=4597808.jpg

Looks good Tapio.

Old pictures doesn't work.. So here is some pictures...



http://www.aijaa.com/img/t/00707/4611059.t.jpg

http://www.aijaa.com/img/t/00051/4611066.t.jpg

http://www.aijaa.com/img/t/00833/4611075.t.jpg

http://www.aijaa.com/img/t/00180/4611086.t.jpg


I got batteries today, I changed 4mm connectors to 8mm bullet connectors.

Now it is almost ready, next I need to solder wirings. I am still waiting clutch bell and shoes :wink: .



http://www.aijaa.com/img/t/00490/4611051.t.jpg

http://www.aijaa.com/img/t/00076/4610991.t.jpg

http://www.aijaa.com/img/t/00429/4611009.t.jpg

http://www.aijaa.com/img/t/00211/4611042.t.jpg


- Tapio.

Now finally with wires.

http://www.aijaa.com/img/t/00548/4640118.t.jpg

Click to enlarge.

Now I have been painted the new body to car with metal blue color and I got the clutch bell and bearings so I mounted the clutch to car and had a few drives with it. The car is working good, no problems with mechanical brakes. The tires are stretching a little bit in the asphalt especially in the high speeds and thats only problem with the car right now, none of the electric parts are becoming hot and thats really good thing.

I also drived in the garder grass and grave track.

http://www.aijaa.com/v.php?i=4687014.jpg

http://www.aijaa.com/img/b/00860/4680120.jpg

http://http://www.aijaa.com/img/b/00856/4680135.jpg

hello. i just got a jammin x2 and i am looking for a good race set up .. track is a little clay sand mix. long back stretch. and whoop sections bank corners and some other stuff nothing big... but i got the mamba 2200kv with team orion carbon 6900 30c 4s lipo.. we run about 15 min races witch i can make not a problem with this lipos .. but i am looking for gearing.shock and diff help .. thanks for your time!