PDA

View Full Version : A couple of questions.


HO502cid
03-19-2002, 11:01 PM
I hope this is the right forum but I had some questions. I recently came into a sum of money because I sold my T-Maxx and I am looking for some new parts for my Micro. I know people have been asking about the alloy front suspension package from GPM but I was just wondering which ebay seller is taking orders via e-mail for them? I would also like to know where I might be able to pick up the LRP Quantum Micro Reverse, I found it at Stormer Hobbies but it is more expensive than the Quantum Reverse and I cannot justify spending $10 to get the few benefits of the Micro Reverse.


Thanks for your time!

MDM3
03-19-2002, 11:45 PM
Do you know how to solder? If you do the wires on the QR($85) are easy to replace with smaller guage like what is on the MicroQR
Try here:
https://sslserver.com/stormerhobbies.com/cgi-bin/seekpart.pl?pn=LRP8405
They have the Micro in stock.

armithius
03-20-2002, 10:27 AM
As stated above, I think you are still better off getting the standard quantum reverse and soldering your own connectors on. If you are looking to use the standard kit connectors then you should have the ones from the kit.

TFRMicro
03-20-2002, 04:15 PM
you should get the normal Q. Reverse...

so what will you do to your MC230R??:D

Mykroe
03-20-2002, 04:26 PM
you can get the quantum micro reverse at www.microrcshop.com for $97 now

TFRMicro
03-20-2002, 04:39 PM
the Q. Reverse has better spec...

HO502cid
03-20-2002, 05:40 PM
What is better about the QR's specs versus the QMR's? If I can get the QMR for the same price as the QR should I get it? I found a site that has the QMR for $0.03 less than the QR. Thanks for the feedback.

TFRMicro - I am giving the MC230CR to my brother, I talked him into getting a Micro.

MDM3
03-20-2002, 07:03 PM
Resistance is lower on the QR .This may be due to the high resistance Micro connectors used on the QMR.

HO502cid
03-20-2002, 07:26 PM
I am going to switch to polarized Deans 2 pin connectors anyway.

TFRMicro
03-20-2002, 07:33 PM
Quantum Reverse

Rec. Motor Limit-----------16-36 turns/winds
Voltage Input---------------4-7 cells (4.8-8.4V)
On-Resistance--------------0.0038
Rated Current--------------70A
Max. Current (30 sec.)----45A
Cont. Current (5 min.)-----30A
BEC Output Voltage--------5.0V
BEC Current 30 sec--------2.0A
BEC Current 5 min.---------1.2A
PWM Frequency-------------2100Hz
Reverse Operation ---------yes
Multi protection system----yes
Standard Connector--------yes

TFRMicro
03-20-2002, 07:35 PM
Quantum Micro Reverse
Rec. Motor Limit--------no limit(with 180 size motor)
Voltage Input-----------4-7 cells (4.8-8.4V)
Typical voltage drop---0.075V@10A
Rated Current-----------25A
BEC------------------------5.0V
Drive Frequency---------2100Hz
Reverse------------------yes
Protection system------3-way
Connectors--------------Standard Micro style
Weight-------------------11.0g
Case size----------------about 1" x 1" (tabs are about 3/16")

TFRMicro
03-20-2002, 07:41 PM
Altho the rated current is ok for all 180 size motor....I still think its too little...

and the resistance differences is alot...It will be not as smooth...

and its for the same price....why not get a better one...

HO502cid
03-20-2002, 09:17 PM
I do not see anything about on-resistance there. I think most of these current and resistance differences can be tied to the smaller wire and bad connectors. I will just get the Micro Reverse and try something new, it can't hurt to be different. Thanks a lot for the input though guys, I guess I am too dead set on the Micro Reverse to sway my decision (too stubborn).

TFRMicro
03-20-2002, 10:53 PM
The 0.075 is the on-resistance but it at 10A...

BBK
03-21-2002, 09:42 AM
Minor correction to the above. I'm going to use some Electronics terms here, so pay attention.
Ohm's Law states: Voltage/Resistance=Current. Applying a little mathmatical manipulation allows you to find the "On Resistance" if you are given the Voltage at a given Current as in the above specs for the ESC.
Here's the correct equasion and result.
Voltage/current=Resistance .075v/10A=.0075ohms
As you can see, the "On Resistance"= 0.0075ohms:D

TFRMicro
03-21-2002, 01:39 PM
0.0075 on-resistance is not bad then....

but the rated-current is bit low....