My 1st BL Conversion Project - Inferno MP7.5

[VintageMA]

Hi, I am new to this forum. I am working on my first BL conversion project and there seem to be some great threads here. I was just looking for any input into suggestions for a successful project.

I have a MP7.5 purchased off of ebay with a nitro motor that had wasted more than enough of my time. I got into brushless and lipo with my RC18MT and find it hard to look back to nitro (haven't run my LST2 more than once in 3 months).

I have purchased the majority of the parts that I think I will need for the conversion up to this point and am waiting by the mailbox:027:

List of parts:
From Fine Design RC - order pretty much most of the parts for the LST2 kit that are available on their site (once I run out of fuel, 2 gal. to go, I will probably move the conversion over to the LST2 anyway)

1/8 Nemesis BLUE XLT- 4 motor
BK 9920/c Speed controller
FDM Alum. Heat Sink BK Speed Control mount
FDM Losi Lipo battery tray with look downs
FDM Alum. motor Clamp mounts
Hitec Y Harness (I want to run ESC for forward, but mechanical brake)
4x 2S 3700mAh lipo (my charger only does up to 3s, so I will run the packs in a 2S2P configuration)

From Tower:
Apogee LOA (low-volt alarm, auto-sense 2S-4S, alarms at 3.2v per cell - I can't find anywhere where it says the 9920 controller has a LVC and I don't want to toast ~$375 in lipos)
New Body and Wing

I've added a few pics (first one is RC18MT) and will post a few progress ones along the way.

Thx all - hope you enjoy.

[Serum]

Welcome to the forum!

You've got the wrong distributor boy! ;)

But so far it sounds nice, you can easy save money on the conversion for the buggy /LST and make your own.

the 9920 doesn't have a LVC, but the quark 125 is smoother, cooler and has got a build in low volage cutoff.

You are better of, running the packs on 4S2P on your truck. with 2S2P you have got a too low voltage for the monstertruck.

If you want a better motor than the Nemesis (which get's less hot on partitial load) get a Neu motor. The segmented magnets in the Neu's are responsible for that.

I personally would save me the money and make my own LST conversion. the cfd conversion looks okay, but it's nothing fancy and in price it's WAY over-rated. looking at it, it seems to me like someone who is trying to make a quick (good) buck on it, and material wise, doing relative cheap conversions. it's just a brushless drop-in. No way around it.

Sorry for venting my opinion about the cfd conversions, but they are not my bag..

[scyan]

Yeah, I agree with that all the way !! Stick with Mike here or Jamie at Starluck RC. They are both VERY good people to deal with !

I can provide you with the motor mount for the inferno 7.5 series. Its MUCH stronger and polyvalent than the one from fine design and is very good looking !

You can see the mount here for a hyper 7 and the inferno is the same !

There's even a small video. We provide the Motor mount and ESC/Fan mount that you see in there as well. Both are attached to the center diff and are VERY strong and made out of 6061 grade alloy.

http://s112.photobucket.com/albums/n178/charancon/

You can reach me at teamfcr@excite.com if you have any ? on the motor or fan mount !!

We already have very happy customers !

Thanks !

David
Team FCR

[glassdoctor]

I have to "third" the advice here.

Man I try to not say much and I don't mean to come down on you... this is just a rant in general about Finedesign and all the "run" they get. Guys see them in the magazine ads and throw their money at them cause they don't know what else is out there.


Dump Finedesign as fast as you can....

You will get better advice, better products, better results, better prices........... by following the adivce above.

Too bad you already ordered stuff. Just so you know, Chirs Fine doesn't give a rip about you after your credit card gets charged.

Not trying to toot my own horn, but my Kyosho conversion will blow away any of FD's conversions. Not just performance, but the whole package... the way it runs, the way it looks, track performance, everything...

ok, rant over...

[squeeforever]

To be honest, I have heard some pretty bad things about there service, but I personally had a good dealing with Chris Fine. I got my 9920 from him when Mike was sold out and it fried about 8 packs in and I called him, he said send it in, yada yada, he got my 9920 sent to Germany, they said they would cover him, and as soon as they said that they would send him a new one with his next order, he sent me one he had in stock. Like I said, I haven't had a bad dealing with him, but from what I hear, I'm part of a small crowd..

[glassdoctor]

I may have been out of line... don't know.

I owe VintageMA an apology for ranting on his thread.

We want to see pics, etc and will help out in your project if you need anything. We won't bite I swear.... ;)

I'm on serveral forums and lately FD keeps coming up on all of them. I guess I'm gettting tired of explaining that there is life after FD. They do help get out the word on BL in general but they would have you believe only they can do it.

Hey Mike how much is a full page ad in RCCA? :)

Vintage...

If you search the forums you will find my Kyosho and others. Feel free to ask if you have any questions.

[Serum]

@scyan, welcome aboard!

Would you please contact Mike about advertising on his forum?

(I respect your work, don't get me wrong, but it's Mikes forum, and he makes conversions too)

I see you run the plettenberg maxximum on the quark controller, that's nice to see. The plettenbergs are rather difficult to use, because of their startup resistance (the magnetic field) How is the startup/cogging of that setup?

How many S lipo are you using, and what brand are they?

Are you using pinions like cups of coffee, or is that a hardened pinion?

[scyan]

Yeah I contacted Mike via email but never got a response. So instead of putting a big advertisement like I put elsewhere I'm trying one on one basis... I figured since my stuff really doesnt get in competition with his, why not. Sorry if I've offended anyone.

Yeah, the plettenberg has super HIGH resistance, don'T know why. Its hard to turn by hand ! But no, no cogging with the quark and im on the first setting, i still have 3 upper if it ever tries to cog on me. The packs are maxamps 8000mah lipos. Plenty of rip, plenty of runtime. 4s setup. I might get up to 5s eventually but problem is I don't think I can run a 2s and a 3s together.. won't the 3s try to charge the smaller one before going out to the motor ?

Anyways, the pinions are the century ones from towerhobbies. The 14th got eaten in like 3 mins. and the others are fine, a little worn, but very good for the price. I'm trying to get a kyosho or 9.5 center diff to use a plastic spur eventually. I only ran on VERY high grip surfaces so I find the pinions pretty good so far. I know that going offroad will offset some of the pressure they get.

My biggest problem right now is going out to buy some 100k or 500k center diff oil, it only unloads to the front right now and my tires are pretty much bald because of it.

The plettenberg, can't say enough about it, it's really good. It never goes over 140f NEVER. The controller heats up when going over 13t pinion. But with an 11t pinion I get around 45mph.. and I have a 15t as well, which is well over 50, probably close to 60mph. The video here is with a 14t pinion. We can guesstimate about 3more mph out of the 15t pinion.

Thanks !!

Video here.... and pics of the mount fan and motor

http://s112.photobucket.com/albums/n178/charancon/

[VintageMA]

So, as I had already done the FD purchase - I went with what I had for my first noob project. Have I learned a lot - hells yeah!! After several multiple dealings with FD I have just found him very slow to respond on problems - when I asked him about the XLT4 motor I got a very lame answer about it being his own production and not being able to give out the specs, but it being ample for the LST2, etc.... blah...blah... But I do really like the hardened clutch bell items that he sells - they are really great against a metal spur gear.

So just as a side note on the XLT4 - i saw a scribble on the cap for the can about it being a XL7 - so my guess would be a variation on the Feigao 7XL.

I have finished the conversion with some mods of my own - the FD kit was just kind of a starting point before I found this forum. So I wanted to share a few pics of the final product.

I am running:
XLT4 motor
2 x 4s 3700 mAh (two run in parallel)
9920 esc
Apogee LOA
2000 mAh lipo receiver pack with Novak voltage regulator
Hitec titanium high-torque steering servo
OFNA Torsen differential upgrades (they rock)
Kyosho CVDs front/rear/center

Next project is my LST2 - for which I am buying product from Mike here - I sent him an e-mail and his reply was very detailed and informative.

No longer a noob - but still a lot to learn.

Originally Posted by VintageMA

when I asked him about the XLT4 motor I got a very lame answer about it being his own production and not being able to give out the specs

thats funny, i got basically the same responce out of him when i asked him about the xlt4. i thought that it was kinda wierd when he said to me "i have been in the business too long to give out info like that............"

tomorrow i will call and ask about the xlt4..........again, i can't wait to hear what kind of crappy answer i get this time! :005:

BTW nice conversion!

[squeeforever]

Yup...Thats pretty much the same answer he gave Cemeterygates...I seriously doubt that the motor is "his product". More like a Wanderer or a nemesis with his sticker on it...

Edit: Darn, you beat me to it...

[VintageMA]

I can't resist - I have to share from my e-mail:

"HI , I Would be the Only One I Design It for the 1/8 Trucks, As for Winds No Info can be give out, Sorry It Was my Time Put in to this"

"As for Forums, have no time for the silly crap. Let them Talk, We Are the Best at point in this field and many guys are just behind"

Can't figure out why not share the specs - good way to get more people to buy it.

[squeeforever]

Ok, I see SEVERAL things wrong with those quotes...

1. His grammar is terrible...Ever e-mailed Mike? Its actually correct grammar and easy to read. I had to read that 3 times to understand it fully...

2. Forums are not silly crap...There helpful for one...

3. True, many guys may be behind, whatever the hell he means by that, but still, they are NOT the best...Look at who has a forum with over 1000 members...ALL probably repeat customers...

[VintageMA]

Yeah - add me to that list. I think forum is one of the most mature I've seen and the advice is awesome - I get the feeling most people on this site are in the 25-35 ish age group as opposed to the other forums that are full of 12 years olds saying they can't work on their cars because they have homework to do. LOL

BL is definitely not cheap - but I am hooked by the power these motors with lipo can unleash. My intro to BL was with a RC18MT that I threw a Mamba motor into and until they start to come out with nitro engines with fuel injection and computer controlled timing so you don't spend the whole day tuning the freaking thing there is no looking back on my part. I already have 9 lipo packs with another 4 on the way - and looking back I don't think I could even use a NiMH pack anymore.

I just ordered the MGM 16024 controller from Mike, after a very intelligent reply on his part to an e-mail for recommendations for an LST2 conversion, to start off a 6S BL conversion for my LST2.

[squeeforever]

Yea, it is rather mature...Well there are alot of jokes and whatnot, but its still not 12 year olds saying, "mi carr is faser dan urs!"....Just curious, how old do I seem? I have been told I seem alot older than I really am...