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Old 09-16-2005, 06:57 PM   #10966
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nyuck nyuck nyuck.



You ship thoses towers out yet Jason?
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Old 09-16-2005, 08:22 PM   #10967
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Didn't P-dub say something about some pics of the new towers? Trying to figure out which version I have.
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Old 09-16-2005, 09:36 PM   #10968
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Here's a pic of the upper mounts on the rear tower. The slots are indexed now so it's easier to get them equal but still have more adjustable than the standard towers.

Last edited by Jon Kerr; 06-07-2007 at 05:20 PM.
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Old 09-17-2005, 04:19 AM   #10969
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Jon

Can you post or pm a starting setup or link for the BMI2 chassis for carpet and ashphalt with rubber tyres. I hope to be getting my kit soon

Cheers

Paul
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Old 09-17-2005, 06:59 AM   #10970
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Quote:
Originally Posted by mutley001
Jon

Can you post or pm a starting setup or link for the BMI2 chassis for carpet and ashphalt with rubber tyres. I hope to be getting my kit soon

Cheers

Paul
got http://www.gearchart.com/index.cfm?f....sheets&type=1
or http://www.racing-cars.com/usa/searc...e1=prodvalue14
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Old 09-17-2005, 09:57 AM   #10971
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Quote:
Originally Posted by mutley001
Jon

Can you post or pm a starting setup or link for the BMI2 chassis for carpet and ashphalt with rubber tyres. I hope to be getting my kit soon

Cheers

Paul
YGPM
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Old 09-17-2005, 10:44 AM   #10972
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Quote:
Originally Posted by Jon Kerr
YGPM
Back at ya! Thanks for your help!
Paul
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Old 09-17-2005, 10:54 AM   #10973
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helo u lot
right i have got 2 races left outdoors, then i will b going back to indoors on carpet

i am runing AdrianMs set up that he gave me, and it is gr8 outdoors . was wondering if u had a set up 4 med to small carpet track?? i am runing trf shocks and std chassis (carbon) on foams. 19t motor. just need 1 as a starting point. (i am going to cut the shell out soon 4 it and my chassis is on the longest wheelbase what will b the best 4 indoors, then i will cut the shell to suit that) thanks alot bob
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Old 09-17-2005, 02:48 PM   #10974
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Ran my car the first time today. Couple of minor adjustments and it was dialed!

Noticed a few problems with it though.

An axle (granted, plastic) broke after 5 batts. No problem, replaced it. Cheap though.

Unfortunately there's a more serious problem. If I give the car a decent amount of throttle while turning the wheels in either direction, the wheels and axle assembly wobbles like crazy. The problem is gone when I take the wheels off. I tried with a perfectly balanced set of wheeles/tires - the same.
I'm using a spool. Any help here would be great
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Old 09-17-2005, 02:53 PM   #10975
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u will most probly find that on any car with a spool its just one of tho's things (so i got told lol) just it is anoying, my car has started doing it with a normal diff in also now
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Old 09-17-2005, 03:13 PM   #10976
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It's not normal when you can hear the thing wobble and complain in each corner...
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Old 09-17-2005, 03:18 PM   #10977
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lol mine did that, to solv that turn ya steering down abit, i could hear mine allway round the track and its not a god sound but it dint slow it down. but wen i turned the steering down it was alot better
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Old 09-17-2005, 04:13 PM   #10978
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Quote:
Originally Posted by AdrianM
The chatter comes from the fact that no R/C cars use true CVD's (Constant Velocity Drive). MIP and TiR CVD are actually just fancy rebuild-able UJ's (Universal Joints). The are no problems when the wheels are straight. However, as the wheels turn the UJ causes the axle to accelerate up to 7 deg ahead of the dog bone for 180 deg then decelerate 7 degrees behind the dog bone for the remaining 180. This 360deg cycle of acceleration and deceleration of the axle causes the chattering. Note that the car will not chatter with the wheels and tires off the car. The inertia of the rotating wheel resisting the axles acceleration and deceleration causes the chattering.

As the the drive system wears with use the chattering gradually gets better them pretty much disappears. The tiny amount of play that develops in a CVD with use allows the system to because less sensitive to and eventually can absorb the inherent oscillation.

This is why all the new guys have a problem with this but not the guys with older cars.

The chatter is only noticeable with spools. Diffs and one ways can absorb the oscillation.

All sedans chatter. The JRXS is the first car with a sort-of real CVD. It uses a very old articulating joint design to function as a CVD. It works and is very clever. Their ads say patent pending but I doubt they will be able to patent it as it has been around since the 1800's.

Others are working on real CVD's but the problem is that the materials available do not allow us to make true CVD's within the space and weight limitations required by our cars with acceptable durability....for now.
Adrian posted this a few months ago about the chatter in the front end. It's very informative.
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Old 09-17-2005, 04:22 PM   #10979
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hey jon, have u got a killer set up for carpet? lol. im runing like i said few post bk
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Old 09-17-2005, 05:28 PM   #10980
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Hybrid Dip is the bomb!!!!!!!!!!!!!!! Tried it back to back against tire Tweak. More steering and traction with the Dip. Approximat .3 seconds quiker per lap. It is deffinatly differnet then Tweak. I thought it would be close, but not.
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