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-   -   My Brushless 8ight Project (https://www.rc-monster.com/forum/showthread.php?t=12635)

DRIFT_BUGGY 09.21.2008 05:34 AM

Quote:

Originally Posted by stum (Post 214755)
Just finished up my e-8ight using the tekno conversion.. WOW awesome! I've got the MM esc w/ fan and ccBEC (4s config). Gearing is stock spur (48) and 16t on the e-clutch. No temp issues and she runs great! Motor is the Medusa v2 2000kv 60mm.

7,10,3 for diff fluids
50wt w/ Green on front shocks
35wt w/ Black on rear shocks

She runs great and I was owning the nitro's today!

Sweet, thanks for posting up your setup. Still playing around with my setup. 50wt with green springs seems pretty stiff. What type of trac/surface do you run on?

DRIFT_BUGGY 09.22.2008 02:53 AM

Well I disconnected my CC BEC today from the MMM and ran it for 20 minutes of speed runs up and down the street and the MMM is still alive. Still have the fan in there with the broken blades and the ESC was around 95F after 20 minutes. The fan still blows some air however. Had to stop after 20 minutes to get ready for night shift :sleep:

MTBikerTim 09.22.2008 03:00 AM

I put a bec on my 5th MMM (3rd v2) and it works perfectly. I would keep it on there until we know the problems are sorted.

DRIFT_BUGGY 09.22.2008 03:07 AM

Quote:

Originally Posted by MTBikerTim (Post 215142)
I put a bec on my 5th MMM (3rd v2) and it works perfectly. I would keep it on there until we know the problems are sorted.

How much does it cost to send the MMM back to Castle from Australia and do you know how long it was till they recieved it?

tc3_racer_001 09.22.2008 05:35 AM

20-25 bucks registered but not express. express was closer to 35 if i remember correctly (for a MM)

Gee 10.09.2008 10:36 AM

Drift_Buggy did the mount you have your MMM on come with the kit? Any problems with clearance when the body it on? I need to come up with something different for my 8ight. The body sits right on top of the fan I have on my mm. From the first picture in your thread it doesn't look to have too much of a bend more like an angle down towards the chassis. Is that right? Thanks.

DRIFT_BUGGY 10.10.2008 02:15 AM

Quote:

Originally Posted by Gee (Post 220836)
Drift_Buggy did the mount you have your MMM on come with the kit? Any problems with clearance when the body it on? I need to come up with something different for my 8ight. The body sits right on top of the fan I have on my mm. From the first picture in your thread it doesn't look to have too much of a bend more like an angle down towards the chassis. Is that right? Thanks.

Yeah, the top plate comes with the RCPD kit. It can be bought seperate aswell. I'll have to check if it does clear the body when I get home. Can't remember if it does or doesn't as the race roller body came precut so there is a hole there for the nitro engine.

stum 10.10.2008 07:20 AM

Quote:

Originally Posted by Gee (Post 220836)
Drift_Buggy did the mount you have your MMM on come with the kit? Any problems with clearance when the body it on? I need to come up with something different for my 8ight. The body sits right on top of the fan I have on my mm. From the first picture in your thread it doesn't look to have too much of a bend more like an angle down towards the chassis. Is that right? Thanks.

I used my dremel tool and cut that 'esc stand' stand down basically in half. I used the current wire routing notches as the new height and trimmed it all the way around at that height. Then I made a few more custom notches on my lowered plate and also flattened the three screw downs for the personal transponder on the bottom side and I just used some 3m heavy duty two-way tape to hold the transponder in place. PERFECT FIT!

DRIFT_BUGGY 10.13.2008 05:15 AM

Quote:

Originally Posted by Gee (Post 220836)
Drift_Buggy did the mount you have your MMM on come with the kit? Any problems with clearance when the body it on? I need to come up with something different for my 8ight. The body sits right on top of the fan I have on my mm. From the first picture in your thread it doesn't look to have too much of a bend more like an angle down towards the chassis. Is that right? Thanks.

Sorry I took so long to reply. By the looks of it the cornor of the fan cover will just hit the body but the instruction manual for the esc kit said you can bend the plate down more to clear the body.

Gee 10.18.2008 01:21 AM

Thanks. I have a friend that owns a sign shop. He gives me the scrap lexan leftovers. I tried to make one similar to the one you have. The first attempt didn't get the esc low enough. The second one got the job done. I'm working on a battery tray made from lexan. Using the toarch to bend it into shape. First couple looked like something you'd bring home from 1st grade made out of clay. Is it an ashtray or a coin holder? Thanks for the build thread. I've looked it over a lot since I started thinking buggy. It's helped a lot.

http://i212.photobucket.com/albums/c...s/DSCF6494.jpg

DRIFT_BUGGY 10.18.2008 06:31 PM

Nice work, looks pretty neat

DRIFT_BUGGY 10.24.2008 05:14 AM

Done a few changes to the buggy. Now running a Airtronics MX3 2.4ghz and throttle response is so much better with 2.4ghz. Have also changed the diff fluid from 5/10/3 to 7/10/3 and changed the MMM settings to 70% Punch Control. It seems to accelerate faster but I think that it is due to the diff fluid as I changed the MMM settings 1st and didn't notice much but after changing the diff fluid it ran better. Have now updated the MMM software to 1.2 and removed the Ext. BEC but haven't taken it for a good run yet

DRIFT_BUGGY 10.25.2008 11:50 PM

Got to finally take my buggy for a run but only in the street and the backyard. Didn't get a chance to take it to the track. It's nice not having a Ext. BEC, alot less wires. The MMM ran great with the new software. No issues at all. Only got a chance to ran it for about 1 hour until i got hungry and had to go get a pizza. The MMM temp was 120F and that is with a fan with only 3 blades.
I managed to get a set of 4 Losi Yellow Wheels and Step Pin tires for $15US off ebay which is nice as my current tires don't have much tread left.

DRIFT_BUGGY 10.25.2008 11:51 PM

http://i110.photobucket.com/albums/n...ct08_01sml.jpg

http://i110.photobucket.com/albums/n...ct08_02sml.jpg

DRIFT_BUGGY 10.26.2008 12:03 AM

http://i110.photobucket.com/albums/n...ct08_03sml.jpg

http://i110.photobucket.com/albums/n...ct08_04sml.jpg

ffactory666 10.26.2008 01:37 AM

Nice mate , good to see the MMM is running cool with the new firmware and no external bec .

DRIFT_BUGGY 10.26.2008 03:32 AM

Well got pizza for lunch and went and did some more jumping/running in the backyard and after about 2 hours of more running disaster struck :cry: .............. I hit a jump wrong which sent the buggy flipping towards my son (21 months) who was playing in little sand pit and the buggy struck him in the head and split his head open. So trip to the hospital for the poor little guy. He was ok, but lost alot of blood.
The MMM is still going strong though, it seems to have more punch and better throttle response with the new firmware.

tc3_racer_001 10.26.2008 07:21 AM

more punch- how about RIDICULIOUS PUNCH. 100% seems to do nothing...

i can wheelie with 100%. struggled with 0 before. (V2 BTW)

good to know everythings good. pitty about your son! hope he gets better!

DRIFT_BUGGY 10.26.2008 06:24 PM

My son is fine. When I running around the yard and I flip over, he gets real angry with me if I go and flip the buggy back over as he wants to do it. He always comes with me to the track and stands in pit lane watching me.

DRIFT_BUGGY 10.26.2008 10:36 PM

Well got to go down to the track today for the first time in about 2 months. First time I have been to the track running a different setup (shocks changed, diff fluid now 7/10/3) but I ended up taking my old bold tires down to the track. I got 35 minutes out of the first battery before LVC kicked in (16.4V) and highest recording temp for the 1st run was Motor - 170F, Battery 120F and ESC was 135F. ESC was running 135F as I didn't realise that a twig got jammed in the fan and the fan was working. Took the twig out and fan starting going again. ESC temp went down to 125F once fan started working. It was hard to say if the setup was great as bold tires didn't help but even with the bold tires, it seemed to handle pretty good.
I let everything cool down and then went out for another run. Temps got a little hotter this time, Motor - 180F, Battery - 120F and ESC - 130F but that might be becuase it was now the middle of the day and was a pretty hot day. Bold tires also don't help. After 35 minutes I noticed that one of the tires was unglued but I thought that the battery would ran out soon so I kept on going. Flat out down the back straight lost control and hit the wall pretty hard and ended up stripping the thread that the screw goes into hold down the turnbuckle on the spindle. Didn't matter, didn't ruin my day as that was probably the most fun I have had with a R/C. Castle has done a excellent job with this new firmware. No issues at all and it doesn't look like stopping at all. So nice to not have a ext. bec. on anymore.

tc3_racer_001 10.27.2008 02:08 AM

good to know that im not the only one with a hot motor (170+F). although im getting 160+ after only 6 minutes. in the mains though it doesnt seem to get past 175 before stablising. mind you, it was a 35C day in the shade!!

DRIFT_BUGGY 10.27.2008 09:09 PM

Got to go to the track again today. I put some new Losi Step Pins on, what a difference it makes having tread, doesn't feel like you driving on ice.
1st battery went good, got 37 minutes on it before LVC kicked in. Temps were; Motor - 175F, ESC - 130F & Battery - 130F.
I let it cool down and then ran the next battery. After 22 minutes I bought the buggy into the pits to check the temps and the motor was 195F :oh: (ESC 135F and Batter 120F) It was another hot day but I have never cleaned the motor/bearings. So ill clean and check over the motor and hopefully get another run tommorrow.

tc3_racer_001 10.27.2008 09:55 PM

jeez, and your in sydney! im screwed in brizzy running a hotter motor, smooth can, heavier car and ambient temps cracking 40 regularly in summer!!!

hope you get it under control, sounds like alot of fun though!

DRIFT_BUGGY 10.28.2008 12:25 AM

Quote:

Originally Posted by tc3_racer_001 (Post 226796)
jeez, and your in sydney! im screwed in brizzy running a hotter motor, smooth can, heavier car and ambient temps cracking 40 regularly in summer!!!

hope you get it under control, sounds like alot of fun though!

Im in Central QLD. Surely it can't be from running thicker diff fluid in front and rear.

ffactory666 10.28.2008 02:04 AM

Quote:

Originally Posted by DRIFT_BUGGY (Post 226839)
Im in Central QLD. Surely it can't be from running thicker diff fluid in front and rear.

Have you tried going up one tooth on the pinion to see if the motor temps come down , sounds like your undergeared .

DRIFT_BUGGY 10.28.2008 03:28 AM

Quote:

Originally Posted by ffactory666 (Post 226861)
Have you tried going up one tooth on the pinion to see if the motor temps come down , sounds like your undergeared .

No, i'll try that tomorrow. I was running a larger tooth before I changed all the settings (MMM settings/diff settings etc.) which was when I 1st built it.

ffactory666 10.28.2008 03:40 AM

Quote:

Originally Posted by DRIFT_BUGGY (Post 226869)
No, i'll try that tomorrow. I was running a larger tooth before I changed all the settings (MMM settings/diff settings etc.) which was when I 1st built it.

Should solve it , your other temps are so good seems strange your motor temps went up .

Are you going to try the AKA tires out , you won't go back to any other brand .

DRIFT_BUGGY 10.28.2008 03:58 AM

Quote:

Originally Posted by ffactory666 (Post 226871)
Should solve it , your other temps are so good seems strange your motor temps went up .

Are you going to try the AKA tires out , you won't go back to any other brand .

Battery went up 10F - 15F aswell but its not longer winter which probably why it went up abit.
Here is a shot of my current MMM settings. I only recently changed the punch control from 50% to 70%.
http://i34.tinypic.com/28018w1.jpg

I won a set of 4 premounted Losi Step Pin Tires (off new Losi 8ight) off ebay america for $15US. Currently using them which is better than nothing. I will try out the AKA City Blocks for sure. Haven't had to luck in Australia but most of my orders I do from Amain or Impakt anyway.

DRIFT_BUGGY 10.29.2008 01:43 AM

Well put the 14T pinion in and after 15 minutes the temps of the ESC was 140F and the motor 185F. I then set the punch control back to 50% and put the 13t pinion back in and after another 15 minutes which is when the lvc kicked in the temps were 130F for the esc and 175F on the motor. I'll hopefully get a chance to run another battery and check the temps again. Surely the thicker diff fluids aren't making the motor run hotter. I only went 2000wt thicker in the front and 1000wt thicker in the rear

ffactory666 10.29.2008 05:00 AM

Quote:

Originally Posted by DRIFT_BUGGY (Post 227147)
Well put the 14T pinion in and after 15 minutes the temps of the ESC was 140F and the motor 185F. I then set the punch control back to 50% and put the 13t pinion back in and after another 15 minutes which is when the lvc kicked in the temps were 130F for the esc and 175F on the motor. I'll hopefully get a chance to run another battery and check the temps again. Surely the thicker diff fluids aren't making the motor run hotter. I only went 2000wt thicker in the front and 1000wt thicker in the rear

Never heard of diff fluids doing that .

It's getting hotter in Melbourne and was 28 today my temps went up about 10 degrees across the board from last run but all well within acceptable temps .

I run medium timing on my Medusa as i was told by others and Medusa recommends medium timing on 4 pole motors so maybe you can try that.

Check your bearings in the motor as well and your whole driveline as something could be binding .

With AKA couldn't find any in OZ either ,A Main is the best bet or Imapkt ( i do most of my business with them as well )or try ebay for a bargain . Kyosho MP9 comes standard with medium compound City Blocks so look for one that is being parted , there a few at the moment :wink:

DRIFT_BUGGY 10.29.2008 06:41 AM

Quote:

Originally Posted by ffactory666 (Post 227171)
Never heard of diff fluids doing that .

It's getting hotter in Melbourne and was 28 today my temps went up about 10 degrees across the board from last run but all well within acceptable temps .

I run medium timing on my Medusa as i was told by others and Medusa recommends medium timing on 4 pole motors so maybe you can try that.

Check your bearings in the motor as well and your whole driveline as something could be binding .

With AKA couldn't find any in OZ either ,A Main is the best bet or Imapkt ( i do most of my business with them as well )or try ebay for a bargain . Kyosho MP9 comes standard with medium compound City Blocks so look for one that is being parted , there a few at the moment :wink:

I was told with 'D' Wind motors to run them on low timing and 'Y' can run medium+
I clean my bearings yesterday and put oil on them. Might check out the drivetrain but all seems fine. Might purchase a 12T and see what happens then. 13T (what I am not running) seems just right though (41mph) Know of any where in Australia that sell Mod 1 pinions?

ffactory666 10.30.2008 05:49 AM

Sorry , wish i did .

I have bought all mine from Mike RCM or at Impakt for Robinson pinions .

I have from 14t - 21t but destroyed my RCM 15t last week .

DRIFT_BUGGY 10.31.2008 11:13 PM

Ended up ordering a 12T and a 11T. Can never have to many size pinions. Tekno are bringing out their 1512 Size Motors next week, depending on what they are like I might look at going down to the 1850KV motor

stum 10.31.2008 11:17 PM

All I know is my medusa v2 60mm 2000kv is PERFECT in this 8t tekno v3 buggy.. runs good on 4s and is a beast on 5s, 6s is crazy.. motor temps are never over 130, 150max during summer after like 3 hours of non-stop running.

DRIFT_BUGGY 11.03.2008 05:47 AM

Checked through my drivetrain and seems to be alright. I did notice that the front centre cvd shaft is rubbing on the steering servo mount but it pretty much always has. I did also remove the plastic front diff mount bearing adaptor and now running the optional aluminum apator but can't see how that could do anything bad. What happens if you add to much diff fluid to the diffs.

DRIFT_BUGGY 11.03.2008 08:41 AM

Well I think I worked out why the centre cvd shaft hits the servo mount. Because of the 46T Spur and the RCPD rear diff mount, the front diff mount has to run spacers to sit level which makes the shaft sit higher which causes it to hit the servo mount. I'll just use a dremel and cut it off to it no longer hits and test the buggy out tomorrow to see if it helps any

DRIFT_BUGGY 11.13.2008 01:09 AM

Here is some more photos I finally uploaded onto the computer

http://i110.photobucket.com/albums/n...T/IMG_4280.jpg

http://i110.photobucket.com/albums/n...T/IMG_4298.jpg

http://i110.photobucket.com/albums/n...T/IMG_4315.jpg

http://i110.photobucket.com/albums/n...T/IMG_4231.jpg

http://i110.photobucket.com/albums/n...T/IMG_4223.jpg

http://i110.photobucket.com/albums/n...T/IMG_4293.jpg

http://i110.photobucket.com/albums/n...T/IMG_4311.jpg

DRIFT_BUGGY 11.13.2008 01:10 AM

A few shots of my Marshall (21 month old son)

http://i110.photobucket.com/albums/n...T/IMG_4246.jpg

http://i110.photobucket.com/albums/n...T/IMG_4247.jpg

http://i110.photobucket.com/albums/n...T/IMG_4248.jpg

http://i110.photobucket.com/albums/n...T/IMG_4249.jpg

http://i110.photobucket.com/albums/n...T/IMG_4250.jpg

http://i110.photobucket.com/albums/n...T/IMG_4251.jpg

http://i110.photobucket.com/albums/n...T/IMG_4321.jpg

MTBikerTim 11.13.2008 02:23 AM

Great photos. Looks like he is having fun.

TheRandom1 11.13.2008 09:56 AM

The question is, who had more fun? Dad or son?


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