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Looking for new Mini
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Bronco
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Looking for new Mini - 07.30.2008, 07:27 AM

Hi all,

As the titel says, I had an LRP Shark Factory Team (Vendetta ST) in mind but the CRT.5 caught my attention this week.

I have been reading here but would like to ask about some things :

- Is Jammin/Hong Nor the same car ? I mean quality wise (I know they are the same)
- Can one only buy RTR's or also rollers ? Do the RTR's come build?
- I have a MM + 5700 lying around, so I would also convert to brushless using 2cell Maxamps 6000 mah lipo's.
- What do you do whit the not used parts (engine, cluctch, ...) I would sell them ?
- Except for a motor mount, what else would I need ? Pinions (which) Spur (which) Spare Parts ...
- Is the new CRT.5 with PBS steering already available ?
- I see alot of lipo's put on their sides on the chassis. Is this the only option
- Does one really need the extended chassis to put in a 1/10 scales servo?
- Is the standard drive really up to brushless power ?
- What about steering slop/ wheel slop ? Is it an issue like it was for example with my Mini Inferno ?
- The center diff of the Mini Inferno had the issue of unloading to the front wheels. Is this also true for the CRT? Or is the power even to the front/rear?

I know these are alot of questions, but any answers/advice/comments/thoughts are welcome

Thanks in advance
   
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Arct1k
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07.30.2008, 07:50 AM

Quote:
Originally Posted by Bronco View Post
Hi all,

As the titel says, I had an LRP Shark Factory Team (Vendetta ST) in mind but the CRT.5 caught my attention this week.

I have been reading here but would like to ask about some things :

- Is Jammin/Hong Nor the same car ? I mean quality wise (I know they are the same) - They are physically the same car - nor is the manufacturer - ofna the distributer
- Can one only buy RTR's or also rollers ? Do the RTR's come build? The pro is without the engine and comes prebuilt
- I have a MM + 5700 lying around, so I would also convert to brushless using 2cell Maxamps 6000 mah lipo's. you can get away with a 5700 but it is a bit hot - longer term i would go with an L can
- What do you do whit the not used parts (engine, cluctch, ...) I would sell them ?Yes but Pro has no engine so you are just left with pipe etc which go for very little
- Except for a motor mount, what else would I need ? Pinions (which) Spur (which) Spare Parts... Motor mount and pinion is it - stock spur is fine- It is a mod 1 spur so you will need a bore reducer to use the MM with stock 5mm pinions
- Is the new CRT.5 with PBS steering already available ? Not yet
- I see alot of lipo's put on their sides on the chassis. Is this the only optionNo if you use small lipos - 2500 such as finnster or mikes chassis they can run flat
- Does one really need the extended chassis to put in a 1/10 scales servo? Yes but it comes as standard now
- Is the standard drive really up to brushless power ?Oh yes
- What about steering slop/ wheel slop ? Is it an issue like it was for example with my Mini Inferno ?a little but not too bad considering the abuse mine has taken
- The center diff of the Mini Inferno had the issue of unloading to the front wheels. Is this also true for the CRT? Or is the power even to the front/rear? No even - it has a full centre diff so can be tuned

I know these are alot of questions, but any answers/advice/comments/thoughts are welcomeNP - Just review some of the conversions in the truggy section

Thanks in advance

The larger bore shock mod is essential - revo front - buggy front for rear
   
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Finnster
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07.30.2008, 12:00 PM

I would get the Pro version as its the cheapest upfront and you don't have to resell stuff, plus it has the best parts on it. Its all prebuilt other than tires to mount. All the crt.5 kits now have the OFNA ext chassis. They use std servos

I have the above and as Arct1k said, I use 2100-2500 35mm wide packs. I've done 3S and 4S, but I think I'm going to go all 4S and a 2200 50mm medusa motor to get all the power and runtime I want. 3S works quite well, but too much power pushes the cells a bit. More cells, more power.

Doing the much more standard 45mm packs require some creative mounting on the OFNA chassis, or the RCM chassis which is wider to lay packs flat.

The truck is very tough, the diffs are 1/8th scale diffs. They are stronger than a Revos diff I can tell you. The only weak part is the servo saver, but Arct1k showed me that if you use the rear ackermann hole on the servo saver, the thing holds up.

My build thread for pics

No pics of the BB shock mod, but see Go-ride.com's thread. Its is essential. Click my sig vids if you want to see the .5 in action.
   
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Finnster
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07.30.2008, 12:13 PM

Oh, btw there is a new mini Hyper ST coming out anyday. Nitrohouse said the RTR version is already for sale there, but I couldn't find it. The Pro version will be out sometime later. Its HoBao, which is also an OFNA division.

It does have PBS, but don't know too much else about it yet. Should be good, I like my Hyper ST, but I'd still wait for the pro version. I wouldn't wait on the CRT.5 PBS conversion tho unless you really really want PBS. No RCM mounts or much support for it yet tho.
   
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Bronco
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07.30.2008, 04:16 PM

Thanks for the replies.

Why would the 5700 CC be too light and run hot. I used it in a Losi XXX-T and it did fine. Is the CRT that heavy being 1/12 scale ?

Mod 1 spur gear does that mean I can't use 1/10 scale pinions ? What is a bore reducer and could you direct me to one ?

Will my 2cell lipo's be sufficient to get a good speed ? I'm not yet interested in insane spead (looking for 30mph).

What size rims and wheels does work for the CRT?
   
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Arct1k
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07.30.2008, 04:57 PM

You can run 2.2 buggy or truck tires / wheels - or traxxas 2.8 / proline 30's which I run mostly.

2 cell will be fine on any motor faster than 3500

Mod 1 - yes you need mod1 pinions and bore reducer - see below
http://www.rc-monster.com/proddetail...1pinion&cat=40
http://www.rc-monster.com/proddetail...reducer&cat=40

CRT.5 is a fairly chunky car - metal chassis - full tripple diff - the mambas are really suitable for 2wd statdium trucks and onroad cars.
   
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lutach
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07.30.2008, 05:46 PM

Quote:
Originally Posted by Arct1k View Post
You can run 2.2 buggy or truck tires / wheels - or traxxas 2.8 / proline 30's which I run mostly.

2 cell will be fine on any motor faster than 3500

Mod 1 - yes you need mod1 pinions and bore reducer - see below
http://www.rc-monster.com/proddetail...1pinion&cat=40
http://www.rc-monster.com/proddetail...reducer&cat=40

CRT.5 is a fairly chunky car - metal chassis - full tripple diff - the mambas are really suitable for 2wd statdium trucks and onroad cars.
I saw Arct1k run his CRT.5 and WOW is the only word that I have to say about it.
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Bronco
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07.30.2008, 05:55 PM

Thanks Art1k.

So I can use my front Losi rims on the CRT ?

Since you say its a chunky/heavy car, it will probably not be suited to run indoors on a carpet track using foam tyres (if they are available).

What is the standard size rim and tyre ?

Could I also run it against 1/10 4wd buggy's ?

Basically, I loved the size and handling of my Mini Inferno ST (but not the reliability). Now looking at this CRT I thought it would be a nice replacement and don't have to use Micro Electronics (ESC-Motor-Servo). Thats why I was looking at the LRP Shark ST (Vendatta ST) but its smaller than the Mini Inferno (1/18 vs 1/16)
   
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Bronco
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08.03.2008, 03:04 PM

If the CC 5700 will run hot, will it help to install a cooling head with ventilator ? Or is it best to invest in a new motor. If so, which one (I don't want to spend the cash on a Neu), Medusa/Feigoa ?

Can I use the MM with my 2s2p lipo's wired parallel to obtain 14.4v or will it be to much ?
   
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jnev
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08.03.2008, 03:15 PM

The Feigao actually costs as much as a brand new 5700KV motor from Castle Creations. You can get one for $60 - $70. 14.4V will be way to much voltage for a 5700 motor as well...


   
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Bronco
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08.03.2008, 05:31 PM

Jnev, what motor would you suggest. I would like to use my 2cell lipo's.

Will the 5700 run nice on the CRT with 7.4V ?

I havel 2 Maxamps 8000mah, 2 6000 mah and 3 Team Orion Platinum 4800 lipo's (all 7.4v). These I would like to use without buying new batteries.

So, will the CC Motor burn after a few runs or will it do ok.

I should of thought of it that 14.4v would equals >80000rpm
   
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E-Revonut
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08.03.2008, 05:41 PM

Check out my build in the truggy section, look for my user name. Using a Medusa 36-50-4800-5 motor and MaxAmps 6000mah packs. Very fast, drives straight, and stable. Uses 2.2 buggy rims, not sure if they normally come with 12mm hexes but they where on mine when I got it and for bashing I'm running a set of slash tires with I beleive a 15t pinion. Bore reducers and pinions are available from RC-Monster as are the Medusa motors. I would recomend getting the motor with 5mm shaft so no bore reducer is needed.
   
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Bronco
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08.04.2008, 07:56 AM

I've been searching for your built thread, but did not really find it. Did find other threads from you.

BTW, is 235$ a good deal for a brand new CRT (+52$ shipping to Belgium) ?

Do you know if there are any foam tires for this kind of car ?
   
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E-Revonut
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08.04.2008, 09:00 PM

http://www.rc-monster.com/forum/showthread.php?t=13183
   
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Bronco
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08.05.2008, 05:50 PM

Well, I'm going to order the CRT.5 Pro.

Will be using a MM esc with the 5700 motor (for starters) and 7.4v lipo's.

I'm going to buy the following :
RCM's motor mount
12T pinion (maybe also 14T ?)
bore reducer to 1/8" for the CS motor
heatsink wiht fan for CS motor
fan for the esc
RCM's battery tray/box (or what other options I have ?)

Will those fans take away power from the batt. ?
Do I need and external BEC ?

I'm I forgetting something ?
   
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