R/C Tech Forums

R/C Tech Forums (https://www.rctech.net/forum/)
-   Electric On-Road (https://www.rctech.net/forum/electric-road-2/)
-   -   belts: cutting every OTHER tooth??? (https://www.rctech.net/forum/electric-road/39474-belts-cutting-every-other-tooth.html)

xray racer 04-29-2004 12:33 AM

belts: cutting every OTHER tooth???
 
hey

i was just wondering... ive heard a lot about cutting off every OTHER tooth on belts for belt drive cars, to make the drivetrain more free.....

does every OTHER tooth mean every SECOND??? like cut one-leave one-cut one-leave one etc..

and could somebody please explain the best and easiest way to do this without damaging anything?

and also, is it really worth it??? does it make THAT much of a difference???

im running xray btw

let me know,

thanx, robbie

mcsquish 04-29-2004 04:41 AM

That is what I did with my LOSI car. Since the X-Ray belts are much more narrow I wouldn't think you would want to cut out teeth. From what I have seen, the X-Ray drive like is very free to begin with.

SalvadoriRacing 04-29-2004 07:06 AM

you should try cut the front diff pulley tooth.......

check out the pics from josh cyrul's car and you'll see how it's made....


and surely works...josh was toooooooooooo faster at the roar nats....

mikejr718 04-29-2004 07:27 AM

I just cut the belt on the Losi I built. Found easiest way was to turn the belt inside out and use fingernail clippers to clip off every other tooth.

Cain 04-29-2004 07:28 AM

those X-Rays have insanely free drivetrains. I am an AE man, but its funny to watch stankulas get a kick out of spinning his drive train with a yank on the belt. TALK ABOUT FREE!

ICEMAN 04-29-2004 07:50 AM

i have done it to my XRAY's and have seen really no real gain

Randy Caster 04-29-2004 08:32 AM

I do it on my Losi belts, but really dont see a need to do it on an XRay belt because like everyone is saying, they are already free. I have heard of Josh cutting teeth off the gear which I would think is a better idea on that car since the pulleys are pretty small, cutting teeth would propably make it skip easilly.

John Fontaine 04-29-2004 08:33 AM

Doesn't removing teeth on the belt cause chance of stripping the belt? I don't think the belt could handle a mod motor and it would strip and end your race. My Xray drivetrain is very free, mostly with high speed bearings and the 1.77 internal gear ratio. I would like to hear from Josh or other factory team pilots that have done this on their opinion.

Randy Caster 04-29-2004 08:39 AM

There is no more chance of stripping the belt from when it was stock as long as you dont cut into the fibers. I havent seen anyone strip a belt out here weather it's cut or not...

losispeed 04-29-2004 08:39 AM

I was under the impression that this was done to the Losi Belt because it is a single belt system that has to loop back on its self so cutting out the extra teeth added more flex, making it easier to loop back. Im not even sure this would benifit any other cars..

John Fontaine 04-29-2004 08:50 AM


Originally posted by Randy Caster
There is no more chance of stripping the belt from when it was stock as long as you dont cut into the fibers. I havent seen anyone strip a belt out here weather it's cut or not...
Good point. Would there be a chance for the belt to skip more as there isn't as many teeth in contact with the pullies? These belts surely move fast, mostly with mod motors.. :sneaky:

Cain 04-29-2004 10:08 AM

I have seen an X-Ray belt strip clean. Was pretty funny to, a local racer who will remain incognito when to burn out the compound on his tires. Did it for two seconds, went to go and wow, he had front wheel drive. Was pretty funny. :lol:

Cobra81li200 04-29-2004 10:57 AM

I bet he said that the car was crap, not that what he've been doing was stupid...

NismoSkyline17 04-29-2004 12:49 PM


Originally posted by ICEMAN
i have done it to my XRAY's and have seen really no real gain
Of course not, you're too fast to begin with.:D

stankulas 04-29-2004 06:12 PM

i have cut every other tooth on my xray front and rear belt on the evo2 kit it was noticable with stock but should not be done with the rear belt it will strip to easy i ran the front cut belt for at least 3 months i replaced it when it was tweeked or bent side ways and flipped over twice in one day but it never broke running 19 turn

for stock it is noticable and worth cutting the front belt but i would not do it with 19t or mod and i would cut the pully this time

alex lopez runs super thin belts front and back that were saved down to kevlar and were super flexable when i spun his drive train you could see how free it was and no one can say he is slow
but when he put a 19t he broke it:tire:

FIRE RIDER 04-29-2004 06:23 PM

I was wondering why when i bought my losi used that there were teeth missing on the belt. i never thought to ask, i just thought that it was made that way.

rtypec 04-30-2004 11:13 AM

I heard if you cut every other tooth on the belt, pulleys, spur and pinion gear, you'll be super dialed :lol:

IncogneatO 04-30-2004 12:02 PM

I have heard that each tooth cut off of the pulley = 0.1 secs off of your time.

I am going to try a two tooth layshft pulley and four on the diffs.

I should make the A this weekend.

Masterfaster 04-30-2004 01:33 PM

I've seen my buddy's belt break in stock from shaving every other tooth off the pulley. Just run mod and you don't have to do some of these crazy little things to be fast.

BuddyB 04-30-2004 01:45 PM

At the carpet nats i seen Todd Hodge break a belt, but he said that it was the black belt that he put in over a year ago. And i did do that with yellow belt, but with how hard it was for me to get the black one i didnt chance it.
-Buddy

Cole Trickle 05-01-2004 11:42 AM


Originally posted by IncogneatO
I have heard that each tooth cut off of the pulley = 0.1 secs off of your time.

I am going to try a two tooth layshft pulley and four on the diffs.

I should make the A this weekend.

Try cut off the last four on the diff - then you should be 0,4 sec. faster :D

FlyinGT 05-02-2004 06:48 PM

Wears Out .!!
 
I've just got back from a big meet .....!!
since i'd cut the tooth off my belt (an old belt)
it quickly started to get chewed up an ripping ....
after bout 5 races of 5 minutes in stock ....!!

so if u are trying this on an old belt be careful ...... there will be a chance it will snap or break......... during a race
it'll last longer on a new belt but haven't tried this yet ..!!

i still do recommend it ........ car felt better with the cut belt .!!
(but that could b just me ):lol: :lol: :lol:

Tek Nickal 05-02-2004 11:35 PM


Originally posted by Cole Trickle
Try cut off the last four on the diff - then you should be 0,4 sec. faster :D
Cut them all off, you'll be like 10 min. ahead. :lol:

xray racer 05-03-2004 12:12 AM

hey everyone, thanx for your responses ,..... and please keep em coming with new findings and comments.

another question though.... what will give me a greater benefit.... cutting every second tooth off the belts, or cutting every second tooth off the diff pulleys? or even leaving only say 4 teeth on the pulleys


let me know as im about to order some things in and was wondering whether to get a belt or diff pulleys

thanx

robbie

meat head 05-03-2004 12:21 AM

i cut every other tooth off my belt and i did not see that big of a deffents and when i run mod it skips :(

FIRE RIDER 05-04-2004 05:49 PM

tighten the belt up if it skips. i had my brushless in and it skipped so i tightened it up and it hasnt skipped since. i have a losi so i dont know about tightining up belts on outher cars.

Tek Nickal 05-04-2004 05:57 PM

I find that running a belt that goes to the front wheels loose, really helps the car feel smoother.

=MisFitz= NuKe 05-04-2004 06:38 PM


Originally posted by FIRE RIDER
tighten the belt up if it skips. i had my brushless in and it skipped so i tightened it up and it hasnt skipped since. i have a losi so i dont know about tightining up belts on outher cars.
well, tightening the belt, makes it less free, more drag, which is what you people are trying to be rid of with cutting teeth...DRAG, so if you have to tighten the belt to keep it from skipping, you might as well go play with some Tonka trucks

Neil Rabara 05-04-2004 07:13 PM

I don't recommend cutting the Xray belts at all. Modifying the front pulley is really all you need to do. It does decrease drag and frees up the drive train, and an added benefit is a quieter car.

team_tamiya 05-05-2004 12:25 AM

How far into the tooth should i cut. Has anyone done it with a TA04, found any diff.

xray racer 05-05-2004 12:59 AM

hey, okay i gather so far that cutting every second tooth off the front diff pulley will give the most benefit right???

so now then... how do i do it? dremel every second tooth flat?

FlyinGT 05-05-2004 01:56 AM

yeah i've done it recently to the belts of my TA04 R

i did feel a difference ....... i could use my pinky on the hex hub an move the drivetrain .......... i couldn't b 4 !!
felt smoother when racing........ car would glide into corners.... rather than come to a quick stop n lose all my speed !!

team_tamiya 05-05-2004 03:09 AM

Yeah I have an R to, how far did you cut into each tooth. Have you done anything else to your drive train.

FlyinGT 05-05-2004 03:39 AM

Use A nail clipper .......!!
 
I used a nail clipper ....... to cut the belt .... i cut enough so that its flat an even
when u look at the belt side on ......... u cut it so it looks like the tooth was never there ........ exatly where it would start to rise up an ....like a hill then a flat ... then a hill ....... u should get my point(not very good at explaining things >>>!!:D :D

i've only done this so far ......... not touching the pulleys just yet .may b when i get some spare ones to play around with !!


All times are GMT -7. It is currently 08:47 PM.

Powered By: vBulletin v3.9.3.8
Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.