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Old 09-12-2010, 12:24 PM   #2386
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I suspect the car is pretty balanced since the even tyre wear..??
Trued to 62mm front, 64mm rear. After 1 hour of running or so..







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Old 09-12-2010, 05:29 PM   #2387
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yeah that is about right for tire wear, im jealous you can run an hour on one set :P
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Old 09-12-2010, 08:18 PM   #2388
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wear looks good.
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Old 09-12-2010, 11:50 PM   #2389
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yeah that is about right for tire wear, im jealous you can run an hour on one set :P
ok good. well maybe not quite.. but I was there (on the track) 2-3 hrs and changed my tires once and was driving constantly (and as hard as I could) so..

thanks Jason
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Old 09-13-2010, 02:36 PM   #2390
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Default Why does a two speed clutch need warming up to work properly?

Does anyone have an insight of why 2 speed clutches in some cars need several laps before they start working properly? We have had this in a TM G4RS, and now the same in our Kyoshos. I have also witnessed the same in some MTX4s, one of my mates has a MTX4 that doesn't start changing properly until after about half a race. This seem to be an issue in some cars only, and not all.

Our RRR and VoneS both need more than half a dozen laps each time to work properly; and its not really a problem, but it would be nice to understand why. We have had a couple of instances where the the car didn't change because a little oily fuel got into the 2 speed housing, so I clean it with methylated spirit after each race now. But some cars other brands that have aluminium 2 speed housings that still work if fuel gets in it, also need time before they start changing properly.
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Old 09-13-2010, 04:36 PM   #2391
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Does anyone have an insight of why 2 speed clutches in some cars need several laps before they start working properly? We have had this in a TM G4RS, and now the same in our Kyoshos. I have also witnessed the same in some MTX4s, one of my mates has a MTX4 that doesn't start changing properly until after about half a race. This seem to be an issue in some cars only, and not all.

Our RRR and VoneS both need more than half a dozen laps each time to work properly; and its not really a problem, but it would be nice to understand why. We have had a couple of instances where the the car didn't change because a little oily fuel got into the 2 speed housing, so I clean it with methylated spirit after each race now. But some cars other brands that have aluminium 2 speed housings that still work if fuel gets in it, also need time before they start changing properly.
I have not had this issue with any of my cars muegan or kyosho, but when they become irratic I put in a new set of shoes and springs
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Old 09-13-2010, 08:37 PM   #2392
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Quote:
Originally Posted by Chickentrader View Post
Does anyone have an insight of why 2 speed clutches in some cars need several laps before they start working properly? We have had this in a TM G4RS, and now the same in our Kyoshos. I have also witnessed the same in some MTX4s, one of my mates has a MTX4 that doesn't start changing properly until after about half a race. This seem to be an issue in some cars only, and not all.

Our RRR and VoneS both need more than half a dozen laps each time to work properly; and its not really a problem, but it would be nice to understand why. We have had a couple of instances where the the car didn't change because a little oily fuel got into the 2 speed housing, so I clean it with methylated spirit after each race now. But some cars other brands that have aluminium 2 speed housings that still work if fuel gets in it, also need time before they start changing properly.
i think it could be the engine tuned a little too rich and when the engine warms up it gets more power out of the engine and starts changing into second earlier
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Old 09-13-2010, 10:18 PM   #2393
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i think it could be the engine tuned a little too rich and when the engine warms up it gets more power out of the engine and starts changing into second earlier
Thanks for the advice; that's what you would first think, but its not the case here. Often people in the pits are commenting on the lack of or our late gear change before it starts changing properly, and you can hear it reving hard in the straights.

Also; I advised a guy in the warm up once that I was pitting for; to fix his late gear change, but he just said that it would correct itself in the first race. He was right; it did after a couple of minutes in the race and was right for the rest of the day. I don't think that this is the case that the engines are cold and rich in either case, but I cannot think of why.

Kindest regards,
Lars.
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Old 09-13-2010, 11:16 PM   #2394
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Centax clutches heat up after first few laps. If shimmed too tight clutch gets jammed. Maybe this is the opposite case ? It's shimmed too loose and starts working only when it expanses from heat. Check the shimming.
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Old 09-14-2010, 01:40 AM   #2395
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chickentrader; iv never had that problem. i was going to say engine still needs to be warmed up.

anyway just fully rebuilt my rrr/nt1/733 or whatever u wanna call it, because weather has been crap lately. got my receiver mounted under the chassis on the exhuast side.

cut my chassis - kind of fucked it up abit... but i covered it up so it kinda looks good now lol.
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Old 09-14-2010, 04:04 PM   #2396
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Originally Posted by Chickentrader View Post
Does anyone have an insight of why 2 speed clutches in some cars need several laps before they start working properly? We have had this in a TM G4RS, and now the same in our Kyoshos. I have also witnessed the same in some MTX4s, one of my mates has a MTX4 that doesn't start changing properly until after about half a race. This seem to be an issue in some cars only, and not all.

Our RRR and VoneS both need more than half a dozen laps each time to work properly; and its not really a problem, but it would be nice to understand why. We have had a couple of instances where the the car didn't change because a little oily fuel got into the 2 speed housing, so I clean it with methylated spirit after each race now. But some cars other brands that have aluminium 2 speed housings that still work if fuel gets in it, also need time before they start changing properly.
half a dozen is quite a few, even my track is 17s/lap and it takes 4-5 now that i am running novarossi. my idm engines would shift correctly on maybe the 2nd lap. Be sure that you do not allow the engine to spool into high rpm during these first laps, come hard off the corner and take the straights slow to build up heat until 2nd gear works correctly.

just recently for the evo2 they did change the 2 speed shoe and the surface area of the 2nd gear to match the evolva, possibly because of this problem although I don't think it changed my car one way or the other except now I can't use the titanium 2nd holder.
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Old 09-14-2010, 04:55 PM   #2397
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What the difference between the kit grey and red 2D/4D clutch shoe? And which would suit a long fast flowing track?

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Old 09-14-2010, 07:13 PM   #2398
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What the difference between the kit grey and red 2D/4D clutch shoe? And which would suit a long fast flowing track?

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I have always preferred the grey shoe. I think its smoother.
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Old 09-15-2010, 07:43 AM   #2399
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I have always preferred the grey shoe. I think its smoother.
indeed, the grey shoe has a slight slip on it. the red shoe hits hard. i'd try grey first for a long flowing track that didn't have 90% 180 degree turns.
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Old 09-15-2010, 04:45 PM   #2400
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Thanks for the info guys on the clutch shoes
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