RCCrawler Forums

PONYBOY87LX · 01-30-2008, 11:15 AM

this is the setup i have in mind feel free to express yes's and no's. 55t integy v10 rock crawler motors, adjustable motor mounts, robinson 9t pinion gears (front/rear), noavk crawler esc with cooling fan, hitech HS 645 servos, team orion 3000 mah. let me know the goods and bads. any info would be great

sketch · 01-30-2008, 03:49 PM

It all depends on what size rig. I use the same setup on my 2.2 and it works great but if you are going bigger you might want diferent pinions or motors. You shouldnt need a cooling fan on that esc mine never gets warm.

PONYBOY87LX · 01-30-2008, 04:19 PM

i already have a 2.2 so i want something BIG RIG lol like super class what would you suggest on the pinion or the motos like a 75t or what thanks for the info

sketch · 01-30-2008, 04:29 PM

65t with 8 tooth is the most common that I see.

Kamikaze · 01-30-2008, 05:30 PM

35t's and 6 tooths, trust me.

PONYBOY87LX · 01-30-2008, 05:40 PM

thanks for the info guys, kamikaze will 35t give me enough power and torque.

Kamikaze · 01-30-2008, 06:34 PM

Yes, you will have alot more than the 55t with a 9 tooth.

32inchTSLs · 01-31-2008, 10:13 AM

the relationship between then number of turns and rpm/volt is inverse. that means a 65T is much slower than a 35T. there are a variety of factors that influence a motor's speed.
1. voltage - electric motors react to voltage. that's why the motor slows down as the pack dies
2. windings - the number of windings a motor has indicate if it's going to be fast (high kV) or high torque.
3. brushed vs. brushless - this is important because a brushless motor can be very stable at very low speed and still go very fast if enough voltage is applied. that low speed stability is a result of no electrical connection to the armature. in a brushed motor, at extremely low speed the current goes through same point on the commutator for a long time. that sucks up battery without really giving anything back.
in the words of JRH (HolmesHobbies) "gear down - volt up". this is good advice when you consider that your speed control is only applying a percentage of the battery's voltage to the motor based on your input. a 35T on 7.2v is probably going to yield good wheelspeed at the expense of low end modulation, where a 55T can be very controllable at the low end but runs out of top speed too soon. i've had good success with hand-wound 45T on 7.2v and a good transmitter, but i prefer 11.1v LiPo and brushless.

this is not to say you can't get great results with less than 11v. you just have to come up with a good mix based on your style and the terrain you run on. a 45T on 8.4v will still be as controllable at the low end as it is with 7.2v but with a little more top end. if your ESC can handle it, take up even further. there are successful competitors that are using 9cell and even 10cell sub-C or 2/3A to get the wheelspeed they need and still have good crawl control.

given enough time and tuning (and thought), you should be able to come up with a package that works well.

Moondust1950 · 01-31-2008, 01:56 PM

Good setup apart from the servo. That servo will struggle to turn super class size tyres. I'd go for more torque around 200oz+

Kamikaze · 01-31-2008, 03:06 PM

I've been running 35t's with 6 tooths on a 4 cell with more low speed controle than I can shake a stick at.

PONYBOY87LX · 01-31-2008, 04:43 PM

thanks again guys for all the info

redrustbucket · 01-31-2008, 07:17 PM

I second upgrading those servos. They'll take a dump on you quicker than you'd like. I went to 5955s.

cspyy · 01-31-2008, 07:24 PM

i third on the servos. i ended up having to go back and buy the 5955TG and my clod is just a 2.2

PONYBOY87LX · 02-01-2008, 07:32 PM

where would be the best place to get 5955 (tower hobbies) or where

Badd · 02-01-2008, 08:05 PM

Quote:

Originally Posted by PONYBOY87LX

where would be the best place to get 5955 (tower hobbies) or where

JRH has them and I think you can still get the $10 off also . Enter the coupon January in the checkout screen . he has not said the sale was over . so you can get one shipped for around $107.00

http://holmeshobbies.com/product.php...&cat=13&page=1

PONYBOY87LX · 02-04-2008, 07:43 PM

Well i ordered all the stuff in my original post for my setup today only thing i changed was the esc i went with a novak super duty. I found a tq3 radio with receiver and crystals on ebay. So maybe it will all be here by the weekend and i can start the install got the terminator clod from CPE over the weekend (AWESOME) ill post pics of the build as i progress but this is what i will be starting with. I need to extend the WB and lower it a little but i want to get it mobile first. Let me know what you all think and please hit me with some ideas.

juststartin · 02-04-2008, 07:55 PM

looks good cant wait until you get it working so we can put it through its paces

PONYBOY87LX · 02-08-2008, 10:36 PM

got the clod wired today (still a little rough though) need to do some clean up on the wiring but i wanted to make sure it all worked . Just waiying on the tq3 to come in. I'll try to post some pics later on but its late and im tired so im going to bed. lol cya all in the morning

01-30-2008, 11:15 AM	#1
PONYBOY87LX Pebble Pounder Join Date: Dec 2007 Location: Somerset, KY Posts: 140	couple of setup ? this is the setup i have in mind feel free to express yes's and no's. 55t integy v10 rock crawler motors, adjustable motor mounts, robinson 9t pinion gears (front/rear), noavk crawler esc with cooling fan, hitech HS 645 servos, team orion 3000 mah. let me know the goods and bads. any info would be great Last edited by PONYBOY87LX; 01-30-2008 at 11:53 AM.

01-31-2008, 10:13 AM	#8
32inchTSLs Newbie Join Date: Jan 2008 Location: under a rock Posts: 21	about motor windings... the relationship between then number of turns and rpm/volt is inverse. that means a 65T is much slower than a 35T. there are a variety of factors that influence a motor's speed. 1. voltage - electric motors react to voltage. that's why the motor slows down as the pack dies 2. windings - the number of windings a motor has indicate if it's going to be fast (high kV) or high torque. 3. brushed vs. brushless - this is important because a brushless motor can be very stable at very low speed and still go very fast if enough voltage is applied. that low speed stability is a result of no electrical connection to the armature. in a brushed motor, at extremely low speed the current goes through same point on the commutator for a long time. that sucks up battery without really giving anything back. in the words of JRH (HolmesHobbies) "gear down - volt up". this is good advice when you consider that your speed control is only applying a percentage of the battery's voltage to the motor based on your input. a 35T on 7.2v is probably going to yield good wheelspeed at the expense of low end modulation, where a 55T can be very controllable at the low end but runs out of top speed too soon. i've had good success with hand-wound 45T on 7.2v and a good transmitter, but i prefer 11.1v LiPo and brushless. this is not to say you can't get great results with less than 11v. you just have to come up with a good mix based on your style and the terrain you run on. a 45T on 8.4v will still be as controllable at the low end as it is with 7.2v but with a little more top end. if your ESC can handle it, take up even further. there are successful competitors that are using 9cell and even 10cell sub-C or 2/3A to get the wheelspeed they need and still have good crawl control. given enough time and tuning (and thought), you should be able to come up with a package that works well.

01-31-2008, 07:17 PM	#12
redrustbucket Rock Crawler Join Date: Feb 2006 Location: sunny acres Posts: 621	I second upgrading those servos. They'll take a dump on you quicker than you'd like. I went to 5955s. Last edited by redrustbucket; 01-31-2008 at 07:26 PM.

01-30-2008, 03:49 PM	#2
sketch Newbie Join Date: Jan 2008 Location: lockeford Posts: 32	It all depends on what size rig. I use the same setup on my 2.2 and it works great but if you are going bigger you might want diferent pinions or motors. You shouldnt need a cooling fan on that esc mine never gets warm.

01-30-2008, 04:19 PM	#3
PONYBOY87LX Pebble Pounder Join Date: Dec 2007 Location: Somerset, KY Posts: 140	i already have a 2.2 so i want something BIG RIG lol like super class what would you suggest on the pinion or the motos like a 75t or what thanks for the info

01-30-2008, 04:29 PM	#4
sketch Newbie Join Date: Jan 2008 Location: lockeford Posts: 32	65t with 8 tooth is the most common that I see.

01-30-2008, 05:30 PM	#5
Kamikaze I wanna be Dave Join Date: Oct 2005 Location: Columbia TN Posts: 6,154	35t's and 6 tooths, trust me.

01-30-2008, 05:40 PM	#6
PONYBOY87LX Pebble Pounder Join Date: Dec 2007 Location: Somerset, KY Posts: 140	thanks for the info guys, kamikaze will 35t give me enough power and torque.

01-30-2008, 06:34 PM	#7
Kamikaze I wanna be Dave Join Date: Oct 2005 Location: Columbia TN Posts: 6,154	Yes, you will have alot more than the 55t with a 9 tooth.

01-31-2008, 01:56 PM	#9
Moondust1950 Rock Crawler Join Date: May 2006 Location: United Kingdom,Scarborough Posts: 563	Good setup apart from the servo. That servo will struggle to turn super class size tyres. I'd go for more torque around 200oz+

01-31-2008, 03:06 PM	#10
Kamikaze I wanna be Dave Join Date: Oct 2005 Location: Columbia TN Posts: 6,154	I've been running 35t's with 6 tooths on a 4 cell with more low speed controle than I can shake a stick at.

01-31-2008, 04:43 PM	#11
PONYBOY87LX Pebble Pounder Join Date: Dec 2007 Location: Somerset, KY Posts: 140	thanks again guys for all the info

01-31-2008, 07:24 PM	#13
cspyy Rock Crawler Join Date: Dec 2007 Location: Shreveport, La Posts: 544	i third on the servos. i ended up having to go back and buy the 5955TG and my clod is just a 2.2

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02-01-2008, 07:32 PM	#14
PONYBOY87LX Pebble Pounder Join Date: Dec 2007 Location: Somerset, KY Posts: 140	where would be the best place to get 5955 (tower hobbies) or where

02-04-2008, 07:43 PM	#16
PONYBOY87LX Pebble Pounder Join Date: Dec 2007 Location: Somerset, KY Posts: 140	Well i ordered all the stuff in my original post for my setup today only thing i changed was the esc i went with a novak super duty. I found a tq3 radio with receiver and crystals on ebay. So maybe it will all be here by the weekend and i can start the install got the terminator clod from CPE over the weekend (AWESOME) ill post pics of the build as i progress but this is what i will be starting with. I need to extend the WB and lower it a little but i want to get it mobile first. Let me know what you all think and please hit me with some ideas.

02-04-2008, 07:55 PM	#17
juststartin Quarry Creeper Join Date: Dec 2006 Location: Corbin KY Posts: 392	looks good cant wait until you get it working so we can put it through its paces

02-08-2008, 10:36 PM	#18
PONYBOY87LX Pebble Pounder Join Date: Dec 2007 Location: Somerset, KY Posts: 140	got the clod wired today (still a little rough though) need to do some clean up on the wiring but i wanted to make sure it all worked . Just waiying on the tq3 to come in. I'll try to post some pics later on but its late and im tired so im going to bed. lol cya all in the morning

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Thread: couple of setup ?