R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 08-13-2005, 08:54 PM   #151
Tech Regular
 
Join Date: Dec 2003
Location: Oceanside CA
Posts: 274
Trader Rating: 9 (100%+)
Default

It's great to see people experimenting and "stretching the envelope" using Thermo-Electric-Couplings for r/c use.
The greatest tempeture differential I have ever been able to get was aprox 130 degrees, 80 degree air temp and -53 degree cold side plate. This was using 3 high perforemance 80mm TEC's stacked, remote liquid (gylcol) pumped through a large radiator and 4-120mm high CFM fans.
Of course this was a bench test and not very pratical to transport to a race venue.
There is a racer/forum user (micros-rock) who is working on a portable liquid cooled version. (do a search)
I just got a Team Much More unit and love it! Very well made and compact.
Keep working on new ideas, that's the best way for this hobby to evolve!
Jeff -- Team Pharriswheel
TeamPhariswheel is offline   Reply With Quote
Old 08-13-2005, 09:17 PM   #152
Tech Master
 
kartermdb's Avatar
 
Join Date: Dec 2003
Posts: 1,120
Trader Rating: 15 (100%+)
Default

has anyone noticed that over time there mm motor cooler doesnt cool as well?, mine used to get all frosty on me when i first got it and now it seems like it has trouble getting to 55 degrees
__________________
Mark Burt
Thanks to:
TRINITY - Revtech - Awesomatix USA - Side Piece Racing - Roche RC USA - Darkside Motorsports - Genesis R/C Raceway
kartermdb is offline   Reply With Quote
Old 08-13-2005, 09:57 PM   #153
Tech Champion
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,914
Trader Rating: 4 (100%+)
Default

Guys this is impressive and all but you really don't want to freeze you motor before a race. If you get it to just above 0 deg C you are perfect. If you get it colder to the point where it is frosting up you can actually freeze the arm to the magnets and stall/short out your motor, gum up the oil in the bushing/bearings, etc.

What ever you do make sure you motor will rotate before you pull the trigger. on your radio.
__________________
Adrian Martinez
What I run: Schumacher Mi5/Associated RC10R5.1/Associated RC12R5.2/Futaba/HobbyWing/Team EA Motorsports/BSR Racing
Where I run: Florida Indoor R/C Complex/Thunder Racing/Florida On Road State Series
AdrianM is offline   Reply With Quote
Old 08-14-2005, 04:56 AM   #154
Tech Elite
 
F. Alonso's Avatar
 
Join Date: Jan 2004
Location: Melbourne, Australia
Posts: 2,141
Trader Rating: 10 (100%+)
Send a message via AIM to F. Alonso Send a message via Yahoo to F. Alonso
Default

I've been looking at these little gizmo's for a while but I've been waiting and waiting to see and hear what people think of them. Now that I've seen the size of King-G's one, I'm impressed with that, and I've felt how cool his motor gets and that's quite impressive too. Can you notice the difference on the track in performance or is the benefit in the consistency, or is it even just a case of it making your motors last longer due to less heat buildup??
__________________
Simon Feigl
RCRacer.com.au - Dedicated Australian Forum and Website

XRAY | HPI | Hotbodies | Hobbies Australia | LRP Electronics | Futaba
F. Alonso is offline   Reply With Quote
Old 08-14-2005, 09:02 AM   #155
Tech Fanatic
 
TeamPink91's Avatar
 
Join Date: Jan 2004
Location: Central FL
Posts: 767
Send a message via AIM to TeamPink91
Default

Quote:
I've been looking at these little gizmo's for a while but I've been waiting and waiting to see and hear what people think of them. Now that I've seen the size of King-G's one, I'm impressed with that, and I've felt how cool his motor gets and that's quite impressive too. Can you notice the difference on the track in performance or is the benefit in the consistency, or is it even just a case of it making your motors last longer due to less heat buildup??
I can notice a difference speedwise for the first minute or so of the race, and you get people saying, "hey is that stock or 19 turn". As far as the motor coming off the track cooler, I can't really say because I don't jump out there with a temp gun right after my run to check it.
TeamPink91 is offline   Reply With Quote
Old 08-14-2005, 05:14 PM   #156
Tech Fanatic
 
King-G's Avatar
 
Join Date: Sep 2001
Location: Melbourne Australia
Posts: 837
Send a message via ICQ to King-G
Default

After some more testing of my Motor cooler on the weekend I am pretty pleased, after 30 mins I had Ice building up on the clamp and motor temps down to 3 degree's.

Mind you it was a pretty cold day, didnt really need to be running it
King-G is offline   Reply With Quote
Old 08-15-2005, 12:41 PM   #157
Tech Addict
 
Jam-ehz's Avatar
 
Join Date: May 2005
Location: Toronto, Canada
Posts: 592
Trader Rating: 6 (100%+)
Send a message via ICQ to Jam-ehz
Default

So the MM's Peltier plate is only a 60-70 Watt unit?

Seeing as someone had once reported it that draws 4A, so at around 12-15V it should be that much, correct?

I suppose a 150W or 320W unit would be overkill... also, a bit bigger, 40mm compared to 50mm, and needing a HUGE PSU to keep it going.
__________________
-=≡ Tamiya TA05 TRF415MSX F103R M-03R M-04 M-05 ≡=-
-=≡ CRC Carpet Knife 3.2 OFNA LD3 Pro Fastcats Spektrum ׀ווlı ≡=-
Jam-ehz is offline   Reply With Quote
Old 08-15-2005, 12:50 PM   #158
Tech Elite
 
litespeed-dom's Avatar
 
Join Date: Oct 2002
Location: Beaverton, Oregon
Posts: 3,990
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by Jam-ehz
So the MM's Peltier plate is only a 60-70 Watt unit?

Seeing as someone had once reported it that draws 4A, so at around 12-15V it should be that much, correct?

I suppose a 150W or 320W unit would be overkill... also, a bit bigger, 40mm compared to 50mm, and needing a HUGE PSU to keep it going.
The MR one is a 30mm, my 40mm is a 52watt draws 6A. So you do the math, the MR one probably is a bit less than 52watt. A 50mm w/ 150w would really be an overkill, you'll need a real big heatsink for it to work anyway, if you don't use the right heatsink, a peltier actually has a reverse effect. Like Adrian said, the plate gets before freezing is ok, but not the motor. When I put my motor in the plate to cool, no matter how long I put it in, the motor will never get before 0 still, hover just above freezing, so I think that's the perfect setup.

Dom
__________________
Team Kyosho America - Team Br00d Racing - Team R/C Plus - GQ Racing Tyres - Slapmaster Tools - FSX Racing
litespeed-dom is offline   Reply With Quote
Old 08-15-2005, 01:05 PM   #159
Tech Addict
 
Jam-ehz's Avatar
 
Join Date: May 2005
Location: Toronto, Canada
Posts: 592
Trader Rating: 6 (100%+)
Send a message via ICQ to Jam-ehz
Default

Where do you find the motor clamp? just bend one yourself, or chop up an existing heatsink?
__________________
-=≡ Tamiya TA05 TRF415MSX F103R M-03R M-04 M-05 ≡=-
-=≡ CRC Carpet Knife 3.2 OFNA LD3 Pro Fastcats Spektrum ׀ווlı ≡=-
Jam-ehz is offline   Reply With Quote
Old 08-15-2005, 01:11 PM   #160
Tech Elite
 
litespeed-dom's Avatar
 
Join Date: Oct 2002
Location: Beaverton, Oregon
Posts: 3,990
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by Jam-ehz
chop up an existing heatsink?
There is an easier way to do that.

Just go find a metal tube in whatever material you wish, cut it to your desire length, chop it in half, you'll have a clamp.

Dom
__________________
Team Kyosho America - Team Br00d Racing - Team R/C Plus - GQ Racing Tyres - Slapmaster Tools - FSX Racing
litespeed-dom is offline   Reply With Quote
Old 12-28-2005, 01:08 PM   #161
Tech Regular
 
Join Date: Jan 2004
Posts: 265
Default

Say you have a motor in the Much more cooler. Would using some freeze spray on the motor, speed up the process any ? or hurt it. Or make the motor overall cooler ?

Reason I ask is I used my MM cooler for the first time last night on a Trinity Spec motor. the room was about 69 degrees and I left it on for about 40 minutes and the can only got to 52 degrees F.

Should it have gotten colder ?
erock1331 is offline   Reply With Quote
Old 12-28-2005, 02:12 PM   #162
Tech Master
 
kerry's Avatar
 
Join Date: Jul 2003
Location: Alberta, Canada
Posts: 1,157
Trader Rating: 1 (100%+)
Default

the motor cooler will only get as cold as the amount of air moved away from the peltier device, if you were to put a bigger fan on the unit they would get colder, because they are taking away the heat that is produced from the peltier. using cold sprays would make the motor cooler at the beginning but it would get warmer very quick dont waste your money. just put the unit on 20 min before you run
kerry is offline   Reply With Quote
Old 12-28-2005, 02:14 PM   #163
Tech Regular
 
Join Date: Dec 2005
Location: CA
Posts: 458
Default

if it is true that its a 52watt peltier, i think its pretty much impossible for it to go freezing conditions where we have normal days like 25degC.

some people at the track says it goes freezing, and others says it just condenses. what to beleive? i think some people exagerate some of their equipment they have.
XingXing is offline   Reply With Quote
Old 12-28-2005, 02:26 PM   #164
Tech Master
 
kerry's Avatar
 
Join Date: Jul 2003
Location: Alberta, Canada
Posts: 1,157
Trader Rating: 1 (100%+)
Default

i use the much more because it is compact and looks good, i have made a few units that get to -1C in 20min with ambient air temp around 20 degrees C but the things are to damn big to maintain cooler motors use fans when you are running. i have 2 fans on my chassis combined with the pre treatment of motor cooler = motors that do not loose any zip during a race, my 2 fans sound like a jet when they spool up
kerry is offline   Reply With Quote
Old 01-02-2006, 08:24 PM   #165
Tech Fanatic
 
rogtsaamokin's Avatar
 
Join Date: Oct 2003
Posts: 881
Trader Rating: 5 (100%+)
Default

Any ideas where to find these in the states???
thanks
rogtsaamokin is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS MuchMore Motor Cooler sig sour R/C Items: For Sale/Trade 1 03-17-2008 04:57 PM
Muchmore Motor Cooler DoH Australia For Sale/Trade 2 12-29-2007 01:13 AM
FS: MuchMore Motor Cooler xxx787 R/C Items: For Sale/Trade 5 12-03-2006 01:06 PM
MUCHMORE motor cooler scottw R/C Items: For Sale/Trade 4 04-06-2006 07:25 AM
WTB MuchMore Motor Cooler erock1331 R/C Items: Wanted to Buy 0 12-13-2005 05:59 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 01:27 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net