BL-conversion of a FG Monster 1:6
 

Hi guys,

My name is Hermann, I'm 46 years old and I'm living in Germany.
I was looking for a forum that deals with BL-Monstertrucks and so I found rc-monster.com.
My first BL-MT was a Traxxas E-Maxx with an extra long chassis and a lot of other alu-parts from Unlimited Engineering. I still love this car although it's almost 6 years old but still running with a Lehner 1930 and a BK 18/90.

After taking a closer look I found out that 1:6 brushless conversions are not enclosed here but anyhow,
maybe someone is interested in taking a look at my conversion of a FG Monster Truck 4WD into a BL-Monster.
I took a Lehner 3040/12 BL-engine with approx. 6-7 hp and a Schulze ESC 32.170. I use either 8S1P to enjoy a lot of wheelies or 8S2P to have extra weight and runtme and keep all 4 wheels on the ground.

If you are interested I will post some pictures of my Monster here.
To get a first impression you can check the following links at youtube.

First one is with 8S2P and no wheelies - (sorry for the fog): http://de.youtube.com/watch?v=xAjjKHV6B7c
Second one is with 8S1P only and there's no need to have 4WD: http://de.youtube.com/watch?v=mZQR_Xubr8o

Hope you like it and please let me know what you think about it - thanks!

Regards,
Hermann

Welcome to the forum.

Very nice. I like your coversion a lot. It has tons of power. Post some pictures here so everyone can see them.

Looks very powerful. Lets see some pictures.

-Brett

Welcome E-VO-MAX, I had seen the first vid a while back, very impressive.

Awesome- with that much power it handles like a truck half its size.

Please post up every picture you have, and any other relevant details- there are precious few builds of this quality/size around here. :yes:

Great video's. That is a true monster you have built. i'm with the rest of the guys about the pictures. lets see them. lots of them! Welcome to rc-monster!

Welcome to the forum.

I've seen vids of what people claim to be rocking 1/5 and 1/6 conversions and they are underpowered piles of dog-pooh compared with yours! That thing is rockin' fast!! Great job!

Would you mind posting some pics under the hood so we can see the setup and layout?

Thanks for sharing

Impressive. Great to see an 1:6 converted to brushless with this power level. Would be interesting to see eagletree Graphs of this built. Don't hesitate to post some pictures ;-)

Yes please! More Info! LOL

I would absolutely LOVE to build a truck like this.

I can only imagine a Chassis that has LOTS of room. Room for things like Batteries. LOL Or at least, Battery compartments that weren't so limited.

I'm hoping these have some bullet proof diffs in them.

We talk about 10S - 12S setups, but with the E maxx or E Revo, I can't imagine where to put the kinda batteries needed to produce the power.

Welcome, and thanks for sharing. There are a couple 1/5 scale builds here (we generally call fg's 1/5, but we knew what you meant by writing 1/6) but there would be more if we saw your build pics. (monkey see, monkey do) So yes, please post them !

In general the offraod trucks are 1/6th and the onroad cars are 1/5th classes in Europe. Not so sure how it works now that HPI started in on them.

Woah! That thing can move! Must be going 45+ MpH in that first video... I wish I had the cash for a project like that!

Sorry forgot to mention to you Hermann from Germany, (wife had just came home as I watched the videos)... That is the sickest truck ever !! made me contemplate selling things to make one... I have some gas Bergonzonni 1/5 cars I wanted to make brushless, but an FG truck looks like the cake. I would build it its own garage. Im amazed the power that has on 8s. I am truely impressed with that build and its durability. Keep us updated and plenty more pics !!!

Welcome to the forum. Nice video. Post pics of your truck too.

Thats some serious power...I hope to see the power plant :intello: ...Welcome to the forum ...seriously hope to see the inside of that monster...

Thanks for sharing

x2 please

Thanks to all for your very warm welcome!

It's a pleasure to share pics with you and I'm going to write some details along with the pics.
I'm also interested in data logging and will try to find out what's suitable for this car. Am I right that eagletree is limited to 150 amps? That might be not enough.
The calculated speed should be 60+ mph with the original gear-ratio (16/48) but I took a shorter ratio (14/48) to get more torque as it is still fast enough.
The highest temperatures i got were 140°F at the ESC and 120°F at the engine.

First 4 pics show the belt drive-unit for the 4WD.

That is very, very, very cool. do you have any pics of the setup under that belt guard thingy?

The next ones show the engine and the motor flange. The small engine is a Lehner 1930 out of my E-Maxx to give you an impression of the engine size. The weight is 2,2 pounds.
The front part of the flange is custom made; the rear part is taken out of a FG EVO 04. With this unit I can use the engine in the Monster as well as in my EVO 04 and it takes less than 30 min. to change the unit.

Beautiful! That motor is huge. I can't even imagine what a 3080 looks like.

These are the compartments for the Lipos. I cut them out of 3mm cfk-plates. They allow for four different settings in terms of weight and weight allocation.
1. 1P in front, 2. 1P lower and more rear, 3. 2P in front, 4. 2P front and rear.

Have you considered mounting the 1p tray sideways on the chassis rather than straight and diagonal?

That's how it looks like with lipos. 1P is 2,7 ponds.
The electrics besides the ESC are voltage-controls for 16 cells plus a voltage control and limiter for the receiver-lipo.

BTW: The 3080 has the same diameter but is 40 mm longer, heavier (3,5 ponds) and of course more powerfull if not to say too powerfull for this car.

Sweet. Your setup looks nicer with the lipos installed.

:lol: That's what we like!!! :lol: That truck is so sweet- maybe I'll get one for Christmas!!! NOPE. :smile:

Last but not least some pictures prior and after test driving.
I think that's it for the moment. Please feel free to ask for more details and thanks for watching.

Regards,
Hermann

Unfortunately not but you can download the manual from th FG homepage. I wanted to keep the Lipos in the most secure and protected area in the car and that is right in the middle although it might be better to have the weight lower in the car.

Stunning piece of work. Although its a taboo, I have to ask; how much did all that cost to put together?...

Yeah it's a taboo but it's no secret because you could google all prices in the www. The conversion was approx. 2K Euros without the car. But I did what jayjay mentioned earlier: I sold almost every piece of RC stuff that I had to make this project happen. And I'm going to sell all the gas-components from the monster as well. This makes it a little bit easier for me - and my wife...

did you make the motor mount yourself, or is it from hm-modellbau (onefive.de)?

You're right, the motor mount is from hm-modellbau (onefive.de).
Michael, the owner did a hell of a job to support me in realizing this Monster-project.

Very nice truck you have. I bookmarked that site in case I ever win the lottery.

Do you have graphs of the runs to see how many AMPs you're pulling? I just want to get an idea if my 10S ESC will be enough or if I have to get something more powerful done.

No, not yet. I have to gat a suitable logger first. But a similar setup in an 1/5 pulled approx. 180 amps.

medusa's oracle data recorder is rated for 200amps: http://www.medusaproducts.com/oracle/index.htm

How are temps after you run you truck?

Thanks for the link - looks promising.

The maximum temps so far have been 140° F at the ESC and 120° F at the engine at 50° F outside temp .

It is a 4WD monster out of the box. I haven't checked your rules regarding links yet but if it's not a problem I would post the link to the construction manual here.

no rules about links, and Linc (a member here) goes by no rules, so Link away!