Help ! The dark side is calling to me
 

Hi,

I have been BL buggyless for the past few weeks after my motor adaptor went south. I am in the process of trying to get Mike to machine a different design for me. I should be pretty depressed but in the meantime, nitro is calling to me. I am actually starting to enjoy myself ! Somebody slap some sense into me !

Anyway, I do hope Mike starts to look into my need soon. I need the unfair advantge to compensate for me poor driving skills.

I have purchased a BK 12020 from Mike & will use it in place of the Quark125. I have just done a successful test of the BK in my savage (but with no reverse) so I think I will stick to BK for the time being.

Regards,
Joe Ling

We'll have to get you into NA asap - Nitro Anonymous!

"Hello, my name is joeling, and I am a Nitroholic".

:005:

Anyway, you ought to pick up a fairly cheap stadium truck or something. Then, throw a MM system in it to get you by.

I agree, a MM in a RC10 T4 is great fun. However, now that I've driven my BL buggy, 4WD makes things SO much better.

Sleebus

Hang in there joeling!

Looks like we might need to do an RC-M intervention!

Quick.. someone post a vid of a nitro gettting smoked by BL... :)

on second thought... let him run the nitro for a while.... he will be back hee hee

Hi guys,

Thanks for your support. :027: but I can't help myself... going at it again this Wednesday if weather permits & proper custom clearance from wife :005:

In the meantime, waiting for Mike.:dft012:

Regards,
Joe Ling

Didnt your mother teach you if you do that to much you will go blind.;)

Hi jhautz,

he he do what ? :005:

Anyway, the mind is a terrible thing... always making the most wicked assumptions:027:

Regards,
Joe Ling

I am getting ready to cut a similar mount, let me know if you want me to machine it for ya. What buggy? The one I have drawn up is for a Kyosho/HB.

Hi Bomb-Proof,

YGPM.

Regards,
Joe Ling

Why step into the darkness? You can walk the fence and have fun with both

Hi crazyjr,

Yeah that's a very good idea ! Only thing is I have only darkness now. Waiting for parts to see the light again.

Wow pretty deep there:005: .

Just venting my frustration. I'm pretty close to getting a stable machine before all the troubles began. Getting things right in this tropical heat is not easy. The esc is the most fragile part of the chain. In addition, I'm trying to move on to the next evolution on buggy conversion but nothing can be done until I get a running machine.:036:

Regards,
Joe Ling

I have an equal amount of both, but if i had to pick a favorite of the nitro's, it would be a tossup of the 3.3 revo and my GT2

Hi crazyjr,

On my side of the pond the choie is limited. Everyone runs 1/8 buggy. I am only one of three persons who has a monster. Out of the three, only two of us are active nowadays. Sigh... better than nothing I suppose. At one stage last year, I was the lone offroad person in the whole town for 6 months straight. Scary come to think of it.

Regards,
Joe Ling

Not always easy to get clearance from the wife!

Hi Procharged5.0,

U are so right but I can't say anymore on this subject.. :005:

In the mean time, still waiting for Mike's response. Pretty impatient of me:007:

Regards,
Joe Ling

Hi,

Mike has come through for me ! I only hope that my poor drawing skills did not let me down. If all goes well, I'll be BL powered again come next weekend (but may have to wait until week after next to get a run as next weekend is the last day of Chinese New Year - no way to escape the mandatory celebrations).:012:

Regards,
Joe Ling

Nice design and nice execution! I'm really digging the one-piece rear diff carrier/motor mount. Screwing it to the stock plastic diff holder works, but don't like how you have to put the pinion WAAAAY on the end of the motor shaft to make it work.

Very cool!

Sleeb

I have got to agree, that is a very ncie design. I am sure it won't let you down.

Nice design! Looks good!

Very nice! Why are the celebrations mandatory??

Hi guys,

Thanks for the words of encouragement. Mike sent me that pic of the mount just as he finished it. So, I will have to wait for Mr. Postman to deliver the item & it will take a week at least. :002:

Hi squeeforever, Chinese New year lasts 15days. However, for practical purposes, only 2 days of public holiday is granted where I live (first 2 days). However, apparently, the last day of the CNY is also significant & much celebrated (although not a public holiday) occassion. That's the best I can do :o :005:

In the mean time, I'm brushing up my driving skills with my nitro buggy. Wonder why the silly buggy always get sucked into the bricks lining the edge of the track ? :027:

Regards,
Joe Ling

I have noticed that with all my R/Cs. My theory is that the R/C vehicle, having minimal mass, is drawn towards the wall via gravity because of the relatively higher mass of the wall. That's my story and I'm sticking to it!

Hi brianG,

Ah yes, the good old blame it on the forces of attraction law of physics thingy. I thik I'll make your story mine from now on too. :027:

Regards,
Joe Ling

I have another theory; i keep driving up on the pvc pipe lane markers at my track. I think they glued the caps on on a real hot day, then in the cooler weather there is a vacuum near the rails.

Hi bdebde,

Sorry, can't use that, my local 'track' is made of used mooring rope & bricks. So, no chance of vacuum forming :005:

Regards,
Joe Ling

I say go for the nitro. Later on you can think of it as an appreciation period you went threw.

Hi,

A big thank you to Mike!:004: I have received the motor mount & it has been installed. Gonna test it in 1/2hrs time if the rain doesn't come by then.:002:

Regards,
Joe Ling

Looks nice!

I see you are retaining the steel spur and are using a hardened pinion. I'm curious how that holds up. The general consensus says that the pinion will get eaten away, but the mesh on your mount is quite solid, and I think that has a LOT to do with the longevity of the pinion/spur.

That motor mount looks amazing. I hope mine will looks as nice s that one. Mike is making it for me right now. :027:

Mike really should start a new section in the store with the motor mounts he's done. That way, people know what is already available. At the rate that he's aming different mounts, he's going to have to start hiring staff to run the store! :)

Hi guys,

Thanks for the comments. Just came back from the test run. Ambient temperature is around 30 deg C

I have gathered some data:

1) Ambient temperature = approximately 30 Deg C
2) Max. Amp. = 89.7A
3) Max temp. on the esc = 48 Deg C
4) Motor temp. = approx 61 Deg C
5) Battery temp. = 45 Deg C
6) Battery usage b4 LVC kicked in = 2600mah
7) Run time (running, not idling over on it's lid) = approx 13 minutes


Configuration :

1) 8XL
2) 13/46 gearing
3) 5S 3200mah Kokam cells
4) BK 12020 esc
5) sacker pro buggy


Problems encountered :

1) Loose mesh after about 10minutes into the 26 minute session. Retightened & continued
2) Puffed 3S pack eventhough LVC was used. Maybe overdischarged (20C raing is only 64A but saw 89A !):036:


Conclusion :

I think this is a good test finally laying to rest on the problems encountered by my BL system in this warm & humid place. I need to get better battery but that would in turn increase the weight of the buggy. :027:


Question for the expert :

When fully loaded, the buggy is close to 4.1kg while its nitro equivalent is only 3.7kg. I am having problem with the handling of the buggy at the moment. It would bottom out eventhough I am already on heavier springs. Do I need to change the viscocity of the shock oil to something heavier compared to the nitro buggy. The nitro buggy is using 30wt oil. Can I use 45wt. oil in the e-buggy to eliminate the bottoming out problem ?

Regards,
Joe Ling

PS : the eagletree data recorder was connected to the 2S side only. Not sure why it showed a max of 12.5V for the battery pack though but not shown anywhere in the graph

Video !

Regards,
Joe Ling

http://www.rcgroups.com/forums/showt...18#post7056592

Great vid! Pretty nice track layout!

Id try s ome flightpower evo 20 3700 lipos, they rock!

The temps lok ok... that's about the hottest I have ever had a lipo get but it should not do any harm.

The buggy it kinda heavy... mine only weigh a tiny bit more than nitro, with a 6000-8000mah pack.

But since it's heavier, you do need to run a heavier oil in the shocks along with the stiffer springs. The oil damping has a lot to do with the car absorbing impact on landing. You could also swap out to a smaller piston and keep the oil the same. That tends to help bottoming out a lot.

But... all 1/8 bottom out anyway at least sometimes

That was great. Looked like you were toying with him. Good show. :D Would love to see more Nitro spanking. ;)

I love to see the raw acceleration of BL compared to Nitro, especially on the same vehicle! Only wish the video was longer. Nice video though.

Hi,

As mentioned, I puffed my 3S. Luckily, my maxamps 4k cells turned up & I'm running 5S 4000mah Maxamps lipo cells at the moment. I have had 2 complete runs until the LVC cut in & each time, my ICE says I've depleted between 3960mah to 3980mah of the battery. So, looks pretty good for now.


I have measured my maxamps recently & thery were in the low 40's (41 ~ 42 deg C). I will try the more viscous oil to see if I can improve the handling a little.


Well, we're friends & just goofing around. But the comments I hear the most from my fellow bashers is that "why no sound ?". "I need to hear the scream of nitro" "no kick lah".:027: I'm beginning to think that if I keep this up, no one will want to 'race' me anymore:036:

Thanks Brian. The handling of the buggy still need to be tweaked so I cannot get a consistant round (read, my driving sucks). :005:

Regards,
Joe Ling

That is really a great idea, and should definately be recomended to him by someone. That way, it may also help someone pick their next project for themselves if they can't machine their own mount.

Yes I second that.

Regards,
Joe Ling