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Old 11-28-2013, 09:27 AM   #1
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Hi,

I have an history of rc cars since i first own a standard tamiya shaft drive electric on road car which wasnt that fast because its so standard. Then i own the first nitro hpi rush evo which was classic till i ruined the spur gear and snapped the rear right drive shaft.. terrible history of nitro buggies.

Now i own a brushless kyosho tf-5 shaft drive and i was mad enough to put in a drag motor 3.5t with 2 cell lipo which was pretty fast and lots of take off until i destroyed the drive shaft and the gear diff end thing connected to drive shaft ripped (not the gear diff inside) because its useless plastic. The chassis is useless now because its old and no spare parts available.

so, i am looking for a first belt drive which would be either the spec r sports or sakura xi sports but i am so unsure which one i would be getting it in terms of reliability since i owned 2 3.5t motors which is left in the shelf. Because i am always up for drag. i always wanted to do proper touring because it is now best of my interest.

What are the pro and con of owning a belt drive? What would be the maintenance effort for it? I have no experience in belt drive cars. Could anybody elaborate and confirm my position to buy one.... and of course any suggestions what i should get.

Thanks....
ciao
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Old 11-28-2013, 09:38 AM   #2
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If you plan to run a low wind mod motor then a belt drive car is best.

If you are interested in a Spec-R car, then have a look at the R1 graphite car and parts that I'm selling.

http://www.rctech.net/forum/r-c-item...c-r-sedan.html
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Old 11-28-2013, 10:37 AM   #3
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yeah probably. i did a 3.5t on a shaft drive and it was just instant power and uncontrollable when throttling like a mad dog from standstill. I have seen other guy with the same but his belt driven and it looks smoother and faster. however i need to know more in depth of a belt driven car.

And by the way, i dont think that would be possible because i am living in malaysia. :S only if you allow international postage...
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Old 11-28-2013, 01:26 PM   #4
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belt drive doesn't have torque steer of shaft, so it works better for low wind motors.

belt drive doesn't do well on surfaces with debris (pebbles, sand) because it chews the belts, and gets stuck in the pulleys.

what more information do you need?
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Old 11-28-2013, 01:57 PM   #5
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how regularly to maintain a belt drive? is there any way to avoid debris and does that even ruin a pulley's tooth?
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Old 11-28-2013, 02:03 PM   #6
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Quote:
Originally Posted by catalzzy View Post
how regularly to maintain a belt drive? is there any way to avoid debris and does that even ruin a pulley's tooth?
every run go through and clean belts of dust and debris. small rocks can get into the teeth of the pulleys, and chew them up


don't drive on a dusty surface, and there will be no debris.
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Old 11-28-2013, 08:38 PM   #7
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i was wondering about the belt tension, does the front and back pulley move and how can i adjust the belt length? arent they the same because they look the same to me?
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Old 11-28-2013, 09:04 PM   #8
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I don't mean to be obnoxious, but with your history of breaking stuff and your love of speed and parking lots, maybe you should get a 4WD Slash and dump some power in there. Then you would have something fast that can take a beating.
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Old 11-28-2013, 09:41 PM   #9
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Quote:
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i was wondering about the belt tension, does the front and back pulley move and how can i adjust the belt length? arent they the same because they look the same to me?
Some cars use a cam system in the bulkheads that can adjust the belt tension, some cars use equal length belts, some don't (most comp level cars use longer front shorter rear belts)
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I don't mean to be obnoxious, but with your history of breaking stuff and your love of speed and parking lots, maybe you should get a 4WD Slash and dump some power in there. Then you would have something fast that can take a beating.
Good advice
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Old 11-29-2013, 12:58 AM   #10
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haha i have enough of bashing and stuff... i am now more interested in touring because there is competition.. just not for fun though
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Old 11-29-2013, 07:51 AM   #11
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Quote:
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i was wondering about the belt tension, does the front and back pulley move and how can i adjust the belt length? arent they the same because they look the same to me?
Your belts are adjustable by the Diff cams, both front and rear.

Tamiya in the TA0* series, I believe, use the same belt lengths front and rear. Otherwise, 507/510mm front and 186/189mm rear is pretty common, although XRay uses a 513mm front and 186mm rear.

Modified can be tough on belts if run to loose, generally, 4-5mm deflection would be a good place to start.
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Old 11-29-2013, 03:08 PM   #12
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thats great. however which one i should opt for the sakura xi, zero or the spec r s1?

if i was to run on foams 26front and 30 back would be fine? how wide can the back go? up to 35?
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Old 11-29-2013, 03:25 PM   #13
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spec r s1.

foams tend to get chewed up on the road i think, it would be better to go for a treaded tire like the hpi x patterns in pro compound.
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Old 11-29-2013, 03:27 PM   #14
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In your first post you said you had a tamiya tc. Was it a tt01 by any chance?
You know, those can easily be tuned up to run very very fast.
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Old 11-29-2013, 03:47 PM   #15
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If you want to actually race, which it sounds like maybe you do, the absolute first thing to do is find out about local clubs, and go check out the racing. Meet people, learn about the classes, and then choose a class to start with and go from there. Racing with other people on a track is very different from parking lot speed runs. You may want to start with something slower.

-Mike
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