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R/C Tech Forums Thread Wiki: Official Team Associated RC10 B5m Mid-Motor Thread
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Old 05-20-2014, 01:23 PM   #4591
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hello people! so i got my B5M a week ago, i came here to learn some racing setups/tips. After reading a few hundred posts, i noticed that people were having motor temp issues?

So, as of now I am only concerned about my B5M running its motors hot, because my driving style- is aggressive and i run 8.5 turn for 2wd modified class at our indoor dirt track.

I thought I saw somewhere- someone suggesting that we cut out the stock B5M body's side scoops? The scoops' positionings look right and the right side scoop looks like it lines up with the motor so should it stream cool air straight on the motor? OR would it be disastrous, weakening the body? Any tips or advices will be appreciated! Pic is attached for reference.

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The temp issues are mainly in 17.5, because they are geared to the sky to get power. That said a MM motor will run hotter than an RM car. For me, its normally 20-30deg higher. Since i normally run 110 in RM, I only temp out at 140ish with a mod motor. Just vent the body and keep an eye on temps. even maifield vents his body
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Old 05-20-2014, 02:52 PM   #4592
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Originally Posted by jjwitczak View Post
hello people! so i got my B5M a week ago, i came here to learn some racing setups/tips. After reading a few hundred posts, i noticed that people were having motor temp issues?

So, as of now I am only concerned about my B5M running its motors hot, because my driving style- is aggressive and i run 8.5 turn for 2wd modified class at our indoor dirt track.

I thought I saw somewhere- someone suggesting that we cut out the stock B5M body's side scoops? The scoops' positionings look right and the right side scoop looks like it lines up with the motor so should it stream cool air straight on the motor? OR would it be disastrous, weakening the body? Any tips or advices will be appreciated! Pic is attached for reference.

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Cut it out and create a flap that directs the air down into the hole you created. Does not look pretty but we are racers looking for results, right?
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Old 05-20-2014, 09:03 PM   #4593
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Originally Posted by jjwitczak View Post
hello people! so i got my B5M a week ago, i came here to learn some racing setups/tips. After reading a few hundred posts, i noticed that people were having motor temp issues?

So, as of now I am only concerned about my B5M running its motors hot, because my driving style- is aggressive and i run 8.5 turn for 2wd modified class at our indoor dirt track.

I thought I saw somewhere- someone suggesting that we cut out the stock B5M body's side scoops? The scoops' positionings look right and the right side scoop looks like it lines up with the motor so should it stream cool air straight on the motor? OR would it be disastrous, weakening the body? Any tips or advices will be appreciated! Pic is attached for reference.

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Having said all that... What is your motor geared at, and what temp is it coming off after 5 mins ? 8 mins ? 10+ mins ?

Just because others are having a problem does not mean you will. As someone already said, the temp issues are 17.5 guys that geared to the roof. I run like 10-15 mins on my 8.5T geared 78/23 and I come off at like 140.
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Old 05-20-2014, 09:08 PM   #4594
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no heat problems for me. i run a trinity 7.5. I did vent the body
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Old 05-20-2014, 09:34 PM   #4595
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Cut it out and create a flap that directs the air down into the hole you created. Does not look pretty but we are racers looking for results, right?
this is what I saw maifield go. he made a flap that was lifted up to direct air in
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Old 05-21-2014, 05:58 AM   #4596
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Does anyone else have other cooling mods they've done?

One's i'm currently aware of are the motor band mounted fan, waterfall mod/mount.

Anyone doing scoops or vent holes on the body? gator teething or shimming the gear cover?

My motors currently are running okay. I've been thinking about helping that out a bit in the future but I'm currently mired with a heck of a time keeping my tekin rs cool. It has the latest software (i believe) and I'm in blinky mode with some wimpy mod motors (10.5/13.5). We use a lot of heavy brakes on the currently layout and I'm sure some of that is the problem for the regular RS. Unfortunately with the 10.5 (same elec setup as my previous B4 and never had an issue like this) i've been between 23/81 and 27/81 with very little speedo change (170F!) so I've dropped to a 13.5 thinking maybe something is wrong with the motor and it has not gone down much. Can't drop the gear on it much more either as the 17.5s nearly walk me down the front straight now! Transmission seems okay but I guess I need to take it apart and verify.

So let's see some of your ideas!
Quit worrying about it. Time for a new speedo anyway.
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Old 05-21-2014, 07:50 AM   #4597
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Questions?? After Tuesdays club race

Let a couple teammates test my ride.
One drives a Losi, other drives a B5m setup like most .

They both said way better then there rides..

Then ? I drove the B5m set up normal..

My remark ?

"Dude !! My ride use to drive like this.."

conclusion:
Inline shorty rocks...
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Old 05-21-2014, 08:13 AM   #4598
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Quit worrying about it. Time for a new speedo anyway.
silence! enjoy vacation.
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Old 05-21-2014, 08:26 AM   #4599
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Will the b5m body work on the 4.2 centro ?
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Old 05-21-2014, 09:29 AM   #4600
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Inline shorty rocks...
shutter

Good luck with that. Been there, done that. In-line shorty just doesn't work on dirt.
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Old 05-21-2014, 09:38 AM   #4601
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shutter

Good luck with that. Been there, done that. In-line shorty just doesn't work on dirt.

For moonscape layouts that blow rooster tails ?
Stick
with the stock setup...

For indoor clay ?

Inline shorty will rule after a few more months.
Believe it will become the standard setup for B5m.

Also the 4 x 55 pistons , they are awesome..
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Old 05-21-2014, 09:48 AM   #4602
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For moonscape layouts that blow rooster tails ?
Stick
with the stock setup...

For indoor clay ?

Inline shorty will rule after a few more months.
Believe it will become the standard setup for B5m.

Also the 4 x 55 pistons , they are awesome..
Did you stick with the 37.5 front and 32.5 rear oils?
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Old 05-21-2014, 10:01 AM   #4603
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For moonscape layouts that blow rooster tails ?
Stick
with the stock setup...

For indoor clay ?

Inline shorty will rule after a few more months.
Believe it will become the standard setup for B5m.
Don't hold your breath Especially if neither of the Ryan's are doing it!

Hartson's got the right idea...
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Old 05-21-2014, 10:04 AM   #4604
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GTI

Same oil weights..No changes...

Last night Ryan Matesa ( top N/w k car driver) said best he ever seen me drive ..

I trying to tell you guys its the best.
After driving a b5m stock , totally convence inline shorty will prove to be the standard setup over the next couple months...
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Old 05-21-2014, 10:08 AM   #4605
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Inline shorty works pretty well on the TLR22, why not on the B5M?
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