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All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> RC Monster Trucks >> Traxxas Monster Truck forum >> Revo Help A Couple of Questions
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Revo Help A Couple of Questions - 7/2/2008 1:40:43 AM   
Helpmepls


 

Posts: 48
Joined: 12/28/2007
From: Asheville, NC, USA
Status: offline 		My revo just chewed up a spur gear (slipper clutch to tight) and im going to buy a new one, i like the way it runs now but wouldnt mind to have some more top speed, would a few more teeth give me more top speed. And if i do will it make the engine run hotter, it already runs around 260-270 degrees (OS .18 TM)

Im also looking for a wheelie bar does anyone have some suggestions on one that will look good and perform good. I'd like a wheelie bar wing combo but im not sure how well they work.

I recently installed the Hitec HS-985MG High Torque Coreless Servo on my revo and am wondering if i really need to put the servo savor spring on to. If i dont will it really hurt anything?

Btw What is the idea setting for the slipper clutch i never had problems with my revo chewing gears but the OS motor has alittle more power.

Sorry for all the questions but you guys always help me out so i come here with every question i have.

< Message edited by Helpmepls -- 7/2/2008 1:47:24 AM >
       Post #: 1

RE: Revo Help A Couple of Questions - 7/2/2008 3:21:24 AM   
Mspeed


 

Posts: 952
Joined: 2/9/2007
From: , VA, USA
Status: offline 		I will address the slipper clutch and spur eatting issue. I have learned over the years that if you set your mesh between the spur and clutch bell "correctly" you should not be eating up spurs that easy. The revo uses the same pitch as the savage and does a fine job with the stock plastic spur. I learned how to set a spur on my old savage before I ventured into any other trucks. On my revo, I only ate one spur due to it melting from the clutches giving out inside the clutch bell. I have run a .32 axial that stripped out the top shaft gears eventaully but never took apart a spur. I am sure if you land with power on you could strip one, but I am also quite certain that alot of guys are going through spurs thinking its a weak link or just the slipper settings, when its the mesh. The more powerful motors start to uncover more issues with a sloppy gear mesh setting.

Going down on spur teeth will give you more top end as long as your motor can push it. Going up in teeth on the spur will give you more lowend power. For slipper, most are going to say tighten it all the way down and back off to a certain amount. I am probably one of the few that sets it by feel, and watching. I start with it tight enough so it will not move if you hold the spur with your fingers and try forcing the truck backwards on the ground. Then tighten from there. You can tell if its slipping by touching the adjusting nut, if its hot its slipping to a good amount. I use locktite on the adjusting nut to make sure it doesnt work its self loose under power. I get it tight enough so its not blazing hot, but still does its job. Really depends on the traction you are getting and power of your motor how tight you need to go. Too loose over heats and wears out the clutch, too tight you will wear out your tranny gears, diffs, and driveshafts prematurely.

_____________________________

After exhausting all aveunes and the most experienced, your left with a problem.

(in reply to Helpmepls)
       Post #: 2

RE: Revo Help A Couple of Questions - 7/2/2008 3:29:11 AM   
Helpmepls


 

Posts: 48
Joined: 12/28/2007
From: Asheville, NC, USA
Status: offline 		Thanks i was hoping someone would post fast im online going to buy a spur gear right now lol, i think the OS .18 can handle a "smaller" spur gear for better top speed. And thanks for the info on adjusting the slipper clutch i didnt really know how to go about that, And your right i probally didnt mesh the gears right.

Anyone got any info on wheelie bars? im trying to find one at IMPAKTRC.com but cant i was hoping to order everything from there. Any help with a good wheelie bar would be appreciated.

Thanks again Mspeed

(in reply to Mspeed)
       Post #: 3

RE: Revo Help A Couple of Questions - 7/2/2008 3:32:00 AM   
racemaxx24



Posts: 908
Joined: 10/7/2007
From: Afton, TN, USA
Status: offline 		To be perfectally onest with u, just buy the Teckno Revo wingmount and wing. That acts as a great wheelie bar plus it is also a good rollbar to protect the engine in a rollover

_____________________________

Life is a pain. Don''''''''''''''''t make it worse by trying to beat my Revo in a drag race...

(in reply to Helpmepls)
       Post #: 4

RE: Revo Help A Couple of Questions - 7/2/2008 3:39:24 AM   
Helpmepls


 

Posts: 48
Joined: 12/28/2007
From: Asheville, NC, USA
Status: offline 		the only reason i have done that is its extra weight... i may buy it though if it works as a wheelie bar. Does it throw the weight off if you jump alot. I dont race it or anything but less weight is always better.

(in reply to racemaxx24)
       Post #: 5

RE: Revo Help A Couple of Questions - 7/2/2008 3:42:55 AM   
racemaxx24



Posts: 908
Joined: 10/7/2007
From: Afton, TN, USA
Status: offline 		It will maybe push the rearend down depending on your speed. It is much better in the long run. I took the wheelie bar of of my maxx because the wing worked much better.

_____________________________

Life is a pain. Don''''''''''''''''t make it worse by trying to beat my Revo in a drag race...

(in reply to Helpmepls)
       Post #: 6

RE: Revo Help A Couple of Questions - 7/2/2008 3:48:40 AM   
Helpmepls


 

Posts: 48
Joined: 12/28/2007
From: Asheville, NC, USA
Status: offline 		Ok thanks, im going to wait on the wing for now but thats the next thing im getting .

(in reply to racemaxx24)
       Post #: 7

RE: Revo Help A Couple of Questions - 7/2/2008 3:49:08 AM   
Mspeed


 

Posts: 952
Joined: 2/9/2007
From: , VA, USA
Status: offline 		I have the tekno wing mount and proline wing. I only got that cause it was the best set up for the revo wing at the time. Now most people are saying the traxxas wing mount is better, due to more support mounting to the bumper and body mount. The revo always had a problem breaking rear exhaust manifolds and a wing will give you more potential issues with pushing in on the exhaust in the rear. I think the wing is the way to go for a wheelie bar as well as engine head protection for roll overs. You risk busting your cooling fins on your motor and breaking your engine mount without a wing, and cages are heavy and make it hard to work on. Plus cages trasnfer alot of impact force to other areas on your truck. I can give you a tip on mesh if you like Helpmepls?

_____________________________

After exhausting all aveunes and the most experienced, your left with a problem.

(in reply to Helpmepls)
       Post #: 8

RE: Revo Help A Couple of Questions - 7/2/2008 3:53:18 AM   
Helpmepls


 

Posts: 48
Joined: 12/28/2007
From: Asheville, NC, USA
Status: offline 		I accept all tips with anything lol always good to learn.

(in reply to Mspeed)
       Post #: 9

RE: Revo Help A Couple of Questions - 7/2/2008 4:16:39 AM   
Mspeed


 

Posts: 952
Joined: 2/9/2007
From: , VA, USA
Status: offline 		Her is my recipe for a lasting spur, and hopefully you will never have a issue again. Loosen the adjusting bolts, put a small strip of reg paper between the spur and bell and push the motor toward the spur to wedge the paper between the bell and spur. You want it to be wedged in there fairly tight at this point. Hold them together and tighten the adjusting bolts. Make sure you get both bolts tight beofore you pull the paper out. With everything tight, and paper pulled out, try spinning the spur and bell with your fingers. They should roll totaly and completely free all the way around. If there is any binding, then you should remesh everything with the paper again, till you get it with zero binding. Now, take your fingers and rock the spur or bell back and forth from right to left. If it feels like there is no extra play between the gears as you rock them and you have zero binding all the way around, your right on. If there is play between the spur and bell as you rock them, this is called backlash. You can actually see the play if you look really close. A very tiny bit is ok, but not much at all. My goal is to keep it very close to zero backlash with no binding.

Sometimes your frame can twist or flex under power and its not a bad idea to have a tiny bit of backlash. Also, as your motor gets older, the bearings in the crank loosen up and can cause your gear mesh to get way off. You should keep a eye on it and check it from time to time. I like to locktite my adjusting bolts to hold everything in place too. The revo doesnt have many issues with things getting stuck in the spur, its pretty well covered.

_____________________________

After exhausting all aveunes and the most experienced, your left with a problem.

(in reply to Helpmepls)
       Post #: 10

RE: Revo Help A Couple of Questions - 7/3/2008 12:42:32 AM   
Helpmepls


 

Posts: 48
Joined: 12/28/2007
From: Asheville, NC, USA
Status: offline 		thanks ill do that with my new spur gear, if there is to much backlash how do you get rid of it?

(in reply to Mspeed)
       Post #: 11

RE: Revo Help A Couple of Questions - 7/3/2008 3:21:40 AM   
matts6887



Posts: 1582
Joined: 3/27/2008
From: scottsdale, AZ, USA
Status: offline 		Like mspeed mentioned, push the engine with the clutch bell on it toward the spur a little bit more. That should help eliminate and/or minimize it....(if Im not mistaken; if I am someone correct me please)

_____________________________

"If U havent broken anything....U arent driving it hard enough"

(in reply to Helpmepls)
       Post #: 12

RE: Revo Help A Couple of Questions - 7/3/2008 3:35:06 AM   
Mspeed


 

Posts: 952
Joined: 2/9/2007
From: , VA, USA
Status: offline 		The piece of paper between the spur and bell is a way of getting the mesh correctly set. If its not working for you, you can try it without the paper but make sure you dont get it so tight that is binds when you move the gears by hand.

_____________________________

After exhausting all aveunes and the most experienced, your left with a problem.

(in reply to matts6887)
       Post #: 13

RE: Revo Help A Couple of Questions - 7/3/2008 4:43:54 AM   
matts6887



Posts: 1582
Joined: 3/27/2008
From: scottsdale, AZ, USA
Status: offline 		Exactly, because if u get it soo tight that it wont move freely, what will happen when u try and run it, is will create friction between the clutch bell and/or the spur, which may end up possibly starting to eat away at the teeth on the clutch bell...

_____________________________

"If U havent broken anything....U arent driving it hard enough"

(in reply to Mspeed)
       Post #: 14

RE: Revo Help A Couple of Questions - 7/6/2008 11:04:33 PM