1/5 scale brushless monster conversion. tips welcomed.
 

so get this guys. a 1/5 scale on road was donated to me yesterday by a friend and neighbor. basically new, been driven once. so of course i have to get rid of that dirty gas motor-i will use it for my weed-wacker!!

anyway, this should be a very fun project. the chasis is perfectly suited for a conversion and will hold the batts and motor, esc perfect.

so here are the 2 options i am thinking.

1. Neu 1527 1.5D/10 cell lipo/ MGM esc Max RPM = 55,500

2. Neu 1527 2D/ 12 cell lipo/ MGM esc Max RPM = 51,060

i am actually leaning toward the 2nd setup but perhaps someone can explain:
MGM has a controller that is capable of 10 cell and 250+ amps. however, the 12 cell capable controller only handles 100 amps. why is this? and would it be sufficient? it doesnt make sense why they would have 6 cell controllers that push 300 amps but a 12 cell cap. esc with only 100 amps. please enlighten me:neutral:

my current truggy and buggy both turn at about 55k rpm and do 60-70 mph depending on my gearing. i am thinking this 1/5 car will do 60 mph.

also, anyone know where to get 8mm bore pinion gears?

here are some pics of the 1/5 monster. my truggy is in the back to give an idea of the size. the pipe on this thing is huge. the disc brakes (very cool) are massive.

anyone out there converted a 1/5 before or know anyone that has? i am wondering how it turned out and what kind of setup they used. i would love any info relating to 1/5 scale covnersion if any exists.

<a href="http://s471.photobucket.com/albums/rr77/ryujames/?action=view&current=DSC00462.jpg" target="_blank"><img src="http://i471.photobucket.com/albums/rr77/ryujames/DSC00462.jpg" border="0" alt="1/5"></a>
<a href="http://s471.photobucket.com/albums/rr77/ryujames/?action=view&current=DSC00466.jpg" target="_blank"><img src="http://i471.photobucket.com/albums/rr77/ryujames/DSC00466.jpg" border="0" alt="1/5 disc brake"></a>
<a href="http://s471.photobucket.com/albums/rr77/ryujames/?action=view&current=DSC00465.jpg" target="_blank"><img src="http://i471.photobucket.com/albums/rr77/ryujames/DSC00465.jpg" border="0" alt="disc brake 2"></a>
<a href="http://s471.photobucket.com/albums/rr77/ryujames/?action=view&current=DSC00464.jpg" target="_blank"><img src="http://i471.photobucket.com/albums/rr77/ryujames/DSC00464.jpg" border="0" alt="1/5 rear diff"></a>
<a href="http://s471.photobucket.com/albums/rr77/ryujames/?action=view&current=DSC00463.jpg" target="_blank"><img src="http://i471.photobucket.com/albums/rr77/ryujames/DSC00463.jpg" border="0" alt="1/5 chassis"></a>

55,000+ rppm is to fast. Especially on a big motor like that. I dont know much about those weedwhacker motors that power those large sclaes, but I'll bet they hardly turn 20,000.

First think you will need is a big wallet to go with that big car....

Get a big motor & big battery and use the torque, not the rpm to get your speed. Gearing is your friend.

1/5 scale opinion
 

I have a 1527 1D motor on my extended Lst2 and with a 5S it was a handful to drive but lacking the topend cause my 5S 8k maxamps seems like dying out. But I think you could only run a 6S or (7S tops) as you will go over the recommended 60,000 rpms rating of the motor. But being a road car it should be lighter than a Monster truck with big tires. My truck weights 18 lbs with full gear on it and that motor never even have problem lighting up the 4 tires
on take off.:yes:

this car weighs about 26 lbs. if i throw the 1527 1.5D with two 5 cells it will probably be in the 20-25 lb range.

your setup was good for 43,000 rpm (the 1527 1D is 2300kv) which is a good setup on a single 5 cell. however, from what i understand the lower kv motor will run cooler and be more efficient. by running the 1500 kv only one 5 cell would be 27k rpm, which is too slow for my tastes. if i double that it will be in a more acceptable range of about 54k rpm. so i would still be below the 60k rpm limit.

check this out: http://www.impaktrc.com/product_info...oducts_id=3076

I would love to see your LST2 though. have any pics? how does the 1527 fit?

Have you done any conversions with Neu motors? have you converted any 1/5 scale cars/trucks? what setups do you run?

I'll give you double what you paid for it......

Yes. Ive run quite a few Neu motors in all kinds of vehicals. No I havent done any 1/5th scales becasuse I never wanted to invest to kind of money it would take to do one correctly. What you are planning will make it run, but you are likly to have all kinds of heat issues spinning a long motor that fast.

25lbs is a heavy beast of a car even for just running on pavement.

I would recomend picking a larger diameter motor with alot of torque, lower kv say 1000 and run it on the 8s you were planning. Then for speed use the gearing. Spinning the motor faster isnt the only way to get more speed.

Go with a 2215/2Y and 10S lipos. As for ESC, any good 10-12 (Even 15S) esc can do the trick. If you're going to stick with the mechanical brakes, you can get away with airplane esc. I have a Jeti Spin200 for sale if you're interested. They work great with pistol grip radios and all you need is the program box for it. You'll still be faster than the gas version and you'll have a more efficient running set up. One other member in the forum converted an HPI Baja and there will be another member doing one as well.

my local hobby store has the new HPI Baja 5T and i am thinking about converting it. the chassis is perfect for holding two batteries on each side like the new ERevo. i think it would be awesome. plus the Baja 5 has tons of upgrade parts avail on the market. it could be a real sweet setup. how does the converted Baja 5B do? have you seen it run? any pics?

thanks for the tips. sounds good. any specific motor recomendations? what does Neu make that would fit into the category you think would be best?

Double what i paid for what? the 1/5 car as it is? or the finished brushless project?

What kind of horse power would the 2215 / 2y make on say 8-10...I only ask cause thats what mike is putting in my baja right now.

I would say max about 5HP giving your set up gives you 100A at 37V. That is just a conservative estimate. I had my BPP truggy on 10S lipos with the 1521/1Y put out 4760 watts which is just over 6HP, but it was just too much for the diffs. If you gear your Baja right, you can see less HP, but longer run time and cooler everything :lol:.

Attachment 5716

Attachment 5717

Attachment 5718 Heres a few shots of my baja ready for the master to start in on.:diablo:

haha. i think i get it. you got it for free so you paid $0. multiply by two and you get 0. hell pay $0 for it.(before brushless) if thats not the joke then....:oops:oops

I like it so far. Getting rid of all the colored aluminum sure helps the look of the baja for me. I like a little touch of color such as you have with the shocks but too much just get's to me.

What motor is going to power this beast?

I just got off the phone with mike and he's going to use a 2215 2y 750kv neu motor on 9 or 10s with a big mgm esc like maybe a 145.32 which will most likely be extreme overkill on the power and will have to be dialed down a bit. As for the baja itself your right all that color looks funny...I see tons of baja's on the baja forum and they have so much color it's not funny. I didnt want something that looked like a float in a gay pride parade. I didnt really consider what color I was using I just went with the best parts money could buy and it just looks the way it looks you know....cool huh? It has darksoul axel extenders for an extra 1'' of width and a custom carbon fiber chassis from the UK and also has rpm a arms front and rear stainless screws carbon fiber parts everywhere hostile tires nutted hinge pins and a jr 8711 400oz torque steering servo ....the list goes on and on. When Mike is done mastering this thing its going to rc car action mag for a full photo shoot / bash test and artical.

There are already a few 1:5 onroad car conversions in Germany. Like for example this one here: Evo 04. This one uses a 3040/12 (875kv) motor paired with a 32.170 Schulze on 8s2p Lipo (12000mAh) -> around 26000rpm. You can find a few videos on youtube and myvideo. I also saw a few conversions with Lehner 2250 or 2280 motors. If you compare those motors wheightwise with Neu Motors you should have a good match for your car. An MGM 12545-3 ESC should also do the trick. Good luck with your project.

I watched the vid pretty cool conversion, but I must say it was very slow. If my baja isnt faster than that I'll tear the electronics out and stuff the gas engine back in it and issue a public apology to every single member of the baja forum.:oops:

Ya know - I picked up a Lehner 2250/12 (987KV) used but in excellent condition earlier in the year with the intent of a large scale project in the 8S- 12S range but seeing that LMT 3040 and Mike using a Neu BAM I am having my doubts it would workout well on 1/5 scale.

The 2250/12 will work. It was used in another very fast 1/5 scale in Germany.

http://www.onefive.de/e-power/prototyp_05_01.jpg

Thanks Lutach - I guess all is not lost. I really like the way these guys have setup their battery trays with the carbon fiber - very neat setup. Props to anyone who can put that together - I just don't have mechanical skills to do anything like that.

Ryu James - good look with this project and post lots of pics - I will be very curious to see how everything comes together.

your Baja is a stunner!! love all that carbon fiber. be sure to post some pics when Mike gets done.

thanks, nice looking builds. i wish this 1/5 i had was a FG. unfortunately it is a Smartech, a cheaper brand. but i guess i cant complain considering the price i got it for.:wink:

i will be sure to post lots of pics but it might be a couple of weeks before i begin work on it now cuz i just got an 1/8 scale Schumacher in the mail yesterday that i have been waiting for for 2 months. i have already bought all the parts and stuff to convert it and so i am going to build this one first. it has a 3 speed trans so i am hoping to make this 100mph+ car. should be fun. it is electric already so doesnt need any converting....just some major improving. here are a couple of pics. it is the Shcumacher Menace GTRe. when this one is done i will start on the 1/5 and be sure to post lots of pics. thanks Team for all the pics and info on 1/5 conversion. sounds like i need to seriously look at the 2200 series Neu motors. would love to see any other 1/5 stuff out there. when will we see the first Baja 5T conversion? anyone, anyone????
<a href="http://s471.photobucket.com/albums/rr77/ryujames/?action=view&current=DSC00471.jpg" target="_blank"><img src="http://i471.photobucket.com/albums/rr77/ryujames/DSC00471.jpg" border="0" alt="menace gtr side"></a>
<a href="http://s471.photobucket.com/albums/rr77/ryujames/?action=view&current=DSC00473.jpg" target="_blank"><img src="http://i471.photobucket.com/albums/rr77/ryujames/DSC00473.jpg" border="0" alt="menace gtr"></a>
<a href="http://s471.photobucket.com/albums/rr77/ryujames/?action=view&current=DSC00472.jpg" target="_blank"><img src="http://i471.photobucket.com/albums/rr77/ryujames/DSC00472.jpg" border="0" alt="3 spd and motor"></a>
<a href="http://s471.photobucket.com/albums/rr77/ryujames/?action=view&current=DSC00474.jpg" target="_blank"><img src="http://i471.photobucket.com/albums/rr77/ryujames/DSC00474.jpg" border="0" alt="3 spd trans"></a>

:gasp: wow DUDE.. Killer!..:intello: I can wait to see it all together..

How fast are you planning on running it ?? and how long do you antisapte before you'll have it done ?? :neutral:

Ok so you shooting for 55K out a 60K motor running 12s and the bad boy weighs 26 lbs that's insane / tons of mass behind it. Please post some pics when you wrap it around a telephone pole doing what 100 mph.. :lol::lol::lol:

Now you just need to strip it down, clean it up and spend a lot of money!! (oohh how i know that feeling).. :yes:

Another killer build / project for YOU.. two thumbs up.. :great::great:




P.S.
keep us updated Sir and Thanks for sharing the lastest and greatest money pit of your's.. :wink:

Good luck with the GTRe. I had one and thought it could do with quite a bit of work to be competent for high speed. The center brace limints battery height, mine had alot of drag in the belt setup, and the barkes just did not work well. Plus that big electronics box is kinda dumb, it would be better to have a battery tray on that side too. And you motor choice will be a bit limited due to the special 3 gear pinion with 1/8 bore. Maybe get a medusa 50mm with 1/8 shaft, but I think a larger motor would be required to run 100mph...

Sounds like an interesting project, I have only seen a few GTPe floating around, I had mine well over a year ago. It was brand new when I got it.

all i can say is TRUE, TRUE, TRUE!! :lol:

true that its lots of money:lol:
true that i will wrap it around a telephone pole:lol:
and true to all the other shit you said too!:lol:

here is the plan: 60mph car finished in the next 4-6 weeks. i would like to say it would be done sooner than that but just being realistic when i consider the money and time.


does anyone here know where to get a 8mm shaft pinion gear that will mesh with these 1/5 scale gears?

hey pimp,
so do you still have your GTRe? i have heard that these are pretty rare. at least that is what the guy told me that i bought it from. but i noticed you can still get them on the schumacher site.

here is what i am going with. i have looked at all this stuff and it all fits pretty well.

Mamba Max ESC
Castle 5700kv motor (1/10 of course)
losi 3200mah 3cell lipo (would like to run a thunder power but wont fit....maybe with some mod i can make it work)
2 jr9100s servos
many alum and titanium schumacher upgrade parts

as for the 100 mph you may be right. many of these 1/10 brushless motors push the RTR trucks at 70 mph out of the box so i figured that this GTRe with the 3 speed would do 100mph+ with those extra gears.
i assumed that 3rd gear would be very tall and that 2nd gear would be similar to the gearing of the single geared RTRs that do 70mph.
well, after looking at the gearing it appears that 3rd on this GTR is about the same as the RTR stock pinion and spur setups like the Rustler and the Losi speedT. anyway, i may just have to scrap the 3 speed trans and come up with something different. will just have to wait and see. But i know these motors could do 100mph with the right gearing. if my Rustler VXL had a 2nd gear....whoa.

imo in regular setups, gears = something more to break lol. kiss :)

hi

i would also target around 25'000 rpm. a good tuned zenoah does bout that.
those cars are geared very high so you need a high torque motor. the 30er lehners seem to be about right or the plettenberg bolido. there also the pinions fit directly on the 10mm shaft.
a schulze 40.160 should do the job. if the promised XXL schulze 40.300 come out soon (?) those would be even nicer. i havn't converted one of my FGs yet but personally i would also do some kind of small watercooling circuit as there is some much room in those cars.


bye
rhylsadar

http://www.schulze-elektronik-gmbh.d...fut-xxl-3i.jpg

hey rhylsadar,
where do you get parts and stuff for your 1/5 FGs? i havent been able to find any good site for 1/5 scale hop up parts.

just an update. i am waiting on carbon fiber sheets from dagraphite.com before fabrication begins. also, i am awaiting my ESC.

Here are some pictures of my conversion
 

I decided to install the Plettenberg Bolido in my FG touring car and build a car for speed. Alas it was quick but too quick. It kept wheel spinning even with the most gentle throttle curve. To keep the mechanical brakes I decided to use a converted Futaba 9CS transmitter with the gimbals that centred on the spring on the throttle side. I then used a mix to apply brakes when the throttle was 1/3rd in reverse position and let the brakes off at 1/2 stick reverse position. The schulze controller only applies when the stick is in reverse in 1/2 position and after a delay of about 1 second. SO basically I have Mechanical hydraulic brakes and elektromotor brakes which can be weakened by using a the boat setting on the schulze.

The lipos are Thunderpower extreme V2 - 5000MA and running 2 sets to have a combined voltage of 44.4v. The total rpm should be over 35000 rpm on the bolido but I have restricted it on the throttle curve to stop the destruction of the motor.

The motor mount is a custom job and took less than 2 hours to mount onto the vehicle. I did not make the mount but have now sourced a chap in germany who can make them.

[IMG]http://i476.photobucket.com/albums/r...e/IMG_0197.jpg[/IMG]

[IMG]http://i476.photobucket.com/albums/r...e/IMG_0198.jpg[/IMG]

[IMG]http://i476.photobucket.com/albums/r...e/IMG_0199.jpg[/IMG]

[IMG]http://i476.photobucket.com/albums/r...e/IMG_0200.jpg[/IMG]

[IMG]http://i476.photobucket.com/albums/r...e/IMG_0201.jpg[/IMG]


I had to change the wheels to stadium wheels as I kept burning the road wheels - I burnt a set within 1 hour. The stadium wheels looks a bit silly but I need to think of an innovative way of mounting a shell - perhaps a MT shell?

I am now waiting for the next conversion which is to mount a Lehner 3080 Monster motor onto a MCD 4 WD truck and power it on 18S.


Mohan

That build is huge! :great::great::great:

Well done.

Have you got any video yet??????

hi

@mohanjude
nice ride! now add a little watercooling circuit with a radiator and pump in there! :intello:
18s in a MCD sounds good.

@ryu james
i usually buy my FG stuff directly here in switzerland. in germany there is a big shop that also sells internationally. rc-car-online.de
the electric motormount for the FG can be bought here http://www.onefive.de/e-power/epower_fg_umbau_I.htm

bye
rhylsadar

I have not had a chance to do the video yet - I was trying to struggle with burning tyres. Once the weather improves and it is a bit brighter and drier I will take video of a good run with some spped meassurements using the eagle tree GPS or the speed gun

Mohan

Very nice Mohan.

Second that.