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on rd adjustable clutch - 7/27/2010 6:41 AM   
smokeymaronejpfxb8


 

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Joined: 7/21/2010
Last Login: 3/31/2013
From: brisbanequeensland australia, AUSTRALIA
Status: offline 		Hi there, i've recently inherited an old picco RS 600 2WD 235MM, it's been extensively modified & i don't have a manual for it so i can't find the info i need regarding the clutch. on the body shell there's a decal saying Syncro clutch ? Dunno if that's the brand , but i can't find anything on the web regarding it. It's basically the same as the clutch's on my Mugen MRX 4R & MTX 3PROSPEC & MTX 4R , only difference is instead of shoes inside it has ball bearings ! My question is : it has spaces for 8 balls but there's only 4 fitted ??? Can anyone explain what the go is there, & i can't find anywhere on the web on these type of clutches. Thanks for listening to my woes. Thanks all.

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RE: on rd adjustable clutch - 7/27/2010 11:49 AM   
D.DJ


 

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Joined: 11/2/2009
Last Login: 3/29/2011
From: Melbourne, AUSTRALIA
Status: offline 		Basically the balls are the weights, in a sense they kind of act the same way. As the engine revs higher, the balls start moving out of their "cups" and push the clutch shoe and plate forward towards the clutchbell. If it has 4 and can fit 8, it is just like the Centax clutches like the Kyosho 2D/4D clutch - you can either have 2 weights at opposite ends, or all 4 weights. The more you have, the earlier it will engage with the same spring tension, but Im not entirely sure how hard it makes the clutch feel. I think if you have 2 weights with the Kyosho one, it grabs softer compared to having all 4 in, but dont take my word for it.


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RE: on rd adjustable clutch - 7/27/2010 1:23 PM   
smokeymaronejpfxb8


 

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Joined: 7/21/2010
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From: brisbanequeensland australia, AUSTRALIA
Status: offline 		Thanks matey, that explains it perfectly , as the bloke i got it from ages ago was a Picco team racer, it's got alot of modified parts on it that from pic's i've seen of stock rs 600's haven't got. So i guess he knew what he was doing aye ? I was just concerned that maybe he'd been short of balls haha & just assembled it with just enough to get it rolling. I've lost his ph No so couldn't call him to check. So thanks heaps for the advice aye.

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RE: on rd adjustable clutch - 7/28/2010 11:46 AM   
D.DJ


 

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From: Melbourne, AUSTRALIA
Status: offline 		No worries, I think its a Picco Integra clutch, ive seen one floating around on "evil bay" on a search for centax style clutches. Took a little while looking at the pic how it works, till I understood how the centax clutch worked!


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RE: on rd adjustable clutch - 7/29/2010 3:39 AM   
smokeymaronejpfxb8


 

Posts: 41
Joined: 7/21/2010
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From: brisbanequeensland australia, AUSTRALIA
Status: offline 		Yep, you're probably spot on there bud, It's actually a nice design, allthough being used to the Mugen clutch's it just seemed strange that all the balls weren't fitted. Allso on 4 of the recesses the bottom is slightly higher, like 1-2mm ? any thought's on that one ? I'm still getting the hang of computers , but i'll take a few photo's to show what i mean. It's a beast to drive allso, i've gotta have the diff (Ball diff) fairly loose so it'll drive in a straight line , otherwise it's full on fishtailing to the point of outta control. They're pretty cool once setup diff wise though, alot different to our 4wd cars. I see you've got a VoneRRR ? I allmost bought one, in fact i'd been drooling over them as a couple of mates have them, but my LHS had the Mugen MTX-4R on special & didn't have any Kyosho's at the time, plus the Kyosho was a couple hundred bucks more. I allready had an MYX-3 Prospec & 1/8 MRX-4R so alot of the parts are universal for all 3 models, so it made sense. I do have a VoneR though, It's the GRP wide sponge version kit , with sway bars, & one way included in the kit, has a different shock spring holder for running rubber tires.I've replaced the chassis as i found one cheap at OZRC (they're an on line shop as well as walk in etc) Top shop actually, great service, but the VoneR was my first serious touring car, she's in beautifull cond allso. anyway i'm raving on a bit aye, but thanks heaps man for yer help, like i said earlier, took alot of worry off me mind. I'll try sort those pic's out today, cheers matey.

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RE: on rd adjustable clutch - 7/29/2010 5:00 PM   
D.DJ


 

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Status: offline 		By "recesses" do you mean where the balls sit in place? Or something else? As far as the fish tailing goes, looser diffs generally give more traction at that end but also affects the other end of the car. But probably not as much as a 2wd. If only the rear is being driven, then power oversteer and fishtailing will always be a challenge to contain.
Yeah, Ive had this RRR (Evo 2) for about 8 months or so, but always had this nasty oversteer happening. Only recently (after months of trying all sorts of setups) I changed the front overdrive ratio down to 0, and instantly felt more tame! Now I just have to make it right once the weather decides to keep the track dry for a few days! Otherwise, its an unbelievably awesome car to drive. My mate has the Mugen MTX-3 right now, and it had really great handling. All he has to do is stop blipping the throttle all the time, ease his way around the track as smooth as me and other racers, and he has a winner. Right now I think he could beat me if he only didnt do what he does now! But any car (almost) is a great car, all it takes is a good driver and the other 15% comes down to tune and setup.


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RE: on rd adjustable clutch - 7/30/2010 8:14 PM   
smokeymaronejpfxb8


 

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From: brisbanequeensland australia, AUSTRALIA
Status: offline 		Yeah man, where the balls sit ! 4 of them are a different shape on the bottom of the recess's, like, they're slightly flattened on the bottom, & the other 4 are perfectly rounded. If all 8 were sitting in it, then 4 of them would sitt 1mm (approx) higher ??? Must be something to do with the tuning of the clutch engagement point aye ??? what'd you think man ??? & in regards to yer oversteer , I've been having same probs with both the MTX-3 & MTX-4R, i was going through rear tires (foams 40) like 3 sets to 1 of fronts. Actually the front i was using 42's so changed down to 40 & even 37, but was still having mad oversteer. & I'm a real tame driver aye, i look after my cars to the point they're all like new still. I was told to drive how you were describing, to be consistant, not flying off every corner etc, i still have a go though, as lot's of oversteer describes. Plus , engines are way too expensive to drive like yer mate does aye ? smooth on the power & keep an eye on the conrods etc, & ,(touch wood), i haven't blown an engine in my nearly ten trs of driving them. That just made me think, the engine in the VoneR , is an old O.S..12TR-(P)-T 5 Port, it's at least 5 yrs old, never had anywork apart from after run oil & sealing up the possible air leaking spots & a couple of o rings in the carb. & it still has plenty of compression & power. All my engines i've broken in properly, & apart from that one, all have had a conrod & pin replacement a few litres of fuel after break in stage. Like i said man, i'm kind to me cars, & only drive the on rd cars on tracks. Ahhh....it's a great hobby aye ?? Cheers matey.

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RE: on rd adjustable clutch - 7/31/2010 6:20 PM   
D.DJ


 

Posts: 439
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From: Melbourne, AUSTRALIA
Status: offline 		With those recesses, I wouldnt have a clue as to what they are! Maybe different clutch characteristics? Id stick to having 4 balls all in the same type of 'hole.' After changing the front overdrive to 0, I took it for a spin today and ive got it exactly where I want to be at running 37r 40f. The fronts do last a hell of a long time I agree, but the rear will always wear more than the front, that's why rear wheels are generally cheaper than fronts! at least from what ive seen around. It's so much fun, only when something is wrong and you don't know what it is, then it gives you a headache. Ive got it tuned perfectly pretty much now, just adjust for the temps on the day. Cant wait till this engines craps itself completely, but I still have a P/S set to use, and after that goes, then it's time to try out a Novarossi engine One guy running today had the '08 353 engine, and it absolutely screamed!! My mate with the MTX-3 is getting the '10 353 soon, cant wait to see how it goes!


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RE: on rd adjustable clutch - 8/1/2010 6:48 AM   
smokeymaronejpfxb8


 

Posts: 41
Joined: 7/21/2010
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From: brisbanequeensland australia, AUSTRALIA
Status: offline 		Good one man, i'll try the same thing. I put a novarossi PLUS.12-3ct Race Tuned 06 engine in the MTX-4R when i bought it, it's an awsome engine too, & after 4 yrs it's only had 1 conrod change, & it's still got too much go for me lol....Yep, the old italians know how to make engines. I've sorta stuck with O.S. engines in general for reliability & price range is good, but splurged out on the MTX-4R as the place i got it from had it cheap, allthough the engine cost more than the car kit. Oh well, ya only live once, but after owning it i can see why they're so good. ok man, gotta go so, i'll try get the photo's on & let ya know how i go with the overdrive.
cheers Tony.

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RE: on rd adjustable clutch - 8/1/2010 7:21 AM   
D.DJ


 

Posts: 439
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From: Melbourne, AUSTRALIA
Status: offline 		The next engine I wanna get is either the Plus 12-3SCT , the new Flash .12 (if I ever get enough money for it) or the '10 or '08 353 .12 Ceramic version. Either will be a beast to drive! The Italians really know how to make a powerhouse, and a price to match. OS is great too, but I think Nova is a bit ahead in terms of craftsmanship and quality control.


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RE: on rd adjustable clutch - 8/3/2010 9:18 AM   
smokeymaronejpfxb8


 

Posts: 41
Joined: 7/21/2010
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From: brisbanequeensland australia, AUSTRALIA
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I agree man, my plus .12 - 3CT Tuned is so powerfull still, & it's the 06 version, it still has ceramic bearings & the crank & sleeve is a work of art. & it's a 3 port allso. I would've loved to get the JP version back then, but that engine was over $600 autralian & the JP version was around $800. Wayyyy toooo muuuuuch $$$$$$ man. The O.S.'s i had were 5 port turbo plug engines & they're unreal, & only a bit over $300. I've got a couple of 3 port versions too but like i said man , they're all between 3-4 yrs old now & still reliable & powerfull. The new O.S XZ models sound good & if they're anything like the old TR & TZ engines then i'd stick to them. However, ya can't beat the Italians for craftmanship, & I've got a liking for JP BLACK modded Novarossi's. The JPFX.21B-8T that i bought off a friend for $600 second hand, is an awsome thing.He had it in a Mugen MBXT Truggy, but bought a house & got out of racing so sold all his rc stuff. The engine had just been run in & had around 6 tanks through it after run in. It came with a new conrod , he replaced the conrod after breakin, as that's alot of strain on the engine( conrod ) when they're new. I still cannot turn it over by hand with the flywheel on, it's tight as. That's the first thing i noticed with Novarossi engines is how tight they are man. I had to heat my Plus 12-3CT up with a hair dryer before i could start it, for a long time after too. Mongrel tight. Nice. I didn't have that with any OS engines.
 Novarossi rocks.   Tony.



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