1/12 forum
I need to paint up a few bodies. I've been pretty much just running the protoform amr 12. Do 12th scale bodies affect handling as much as TC bodies? It took me a year, but I finally settled down on a TC body that I like. It took me going through at least 2 of each of the popular bodies. Suggestions?
Yes the body has a big impact on the handleing of the car. Alot depends on the level of grip, here we have a very low grip(dusty) carpet track so I've found that the HD8 is best for my car/style. If the grip is high the CRC bodies and the AMR should be good. You really should try a couple of bodies with no changes to the car and you'll see the differences.
Tech Master
iTrader: (10)
Joined: Nov 2006
Posts: 1,799
From: New Bern, N.C.
I tried searching for this problem, but it is so hard to find specific info in these threads. Sorry if this has already been covered, I figure it has since I have 3 different cars with the same problem 
I have a CRC 3.2R, 12R5.1 and 12L4 that all have the same problem keeping the left hub tight on the axle. No matter how hard I tighten the screw in the left hub, it eventually develops a little bit of side-to-side slop which ruins the handling. The faster my lap times are getting, the quicker I am working these left hubs loose.... and it is happening on all three 1/12s I am running
Are there any good tricks for keeping the left hub tight on the axle?? The screw is not coming loose and it has always been tight when I checked it, but the hub will eventually move enough to cause ~1mm of play.

I have a CRC 3.2R, 12R5.1 and 12L4 that all have the same problem keeping the left hub tight on the axle. No matter how hard I tighten the screw in the left hub, it eventually develops a little bit of side-to-side slop which ruins the handling. The faster my lap times are getting, the quicker I am working these left hubs loose.... and it is happening on all three 1/12s I am running
Are there any good tricks for keeping the left hub tight on the axle?? The screw is not coming loose and it has always been tight when I checked it, but the hub will eventually move enough to cause ~1mm of play.I tried searching for this problem, but it is so hard to find specific info in these threads. Sorry if this has already been covered, I figure it has since I have 3 different cars with the same problem 
I have a CRC 3.2R, 12R5.1 and 12L4 that all have the same problem keeping the left hub tight on the axle. No matter how hard I tighten the screw in the left hub, it eventually develops a little bit of side-to-side slop which ruins the handling. The faster my lap times are getting, the quicker I am working these left hubs loose.... and it is happening on all three 1/12s I am running
Are there any good tricks for keeping the left hub tight on the axle?? The screw is not coming loose and it has always been tight when I checked it, but the hub will eventually move enough to cause ~1mm of play.

I have a CRC 3.2R, 12R5.1 and 12L4 that all have the same problem keeping the left hub tight on the axle. No matter how hard I tighten the screw in the left hub, it eventually develops a little bit of side-to-side slop which ruins the handling. The faster my lap times are getting, the quicker I am working these left hubs loose.... and it is happening on all three 1/12s I am running
Are there any good tricks for keeping the left hub tight on the axle?? The screw is not coming loose and it has always been tight when I checked it, but the hub will eventually move enough to cause ~1mm of play.The side, or end play issue you point out is from the bearing, and bearing holders seating into the pod.
Over-tightening of the hub will only loosen the hub on the axle more over time, it does not have to be that tight to do it's job, hence the small screw used to lock it down.
This of course is just from my experience with the R5, perhaps other brands have an issue ?
Tech Adept
iTrader: (28)
Joined: Aug 2010
Posts: 245
From: Westerville, Ohio
I think my hub problem was related to a tweak issue. I didn't know how to adjust tweak so when I was setting up the cars, I just screwed down both sides until they looked even
Luckily another member on this site explained it to me in a PM and after checking (and fixing) the tweak, I didn't have a problem with the hubs coming loose. All 3 cars were hooking pretty sharp in one direction before fixing the tweak. I think this combined with a ton of traction was slowly working them loose over time. I ran all day sunday and the hubs didn't loosen up once.
Luckily another member on this site explained it to me in a PM and after checking (and fixing) the tweak, I didn't have a problem with the hubs coming loose. All 3 cars were hooking pretty sharp in one direction before fixing the tweak. I think this combined with a ton of traction was slowly working them loose over time. I ran all day sunday and the hubs didn't loosen up once.
Yes the body has a big impact on the handleing of the car. Alot depends on the level of grip, here we have a very low grip(dusty) carpet track so I've found that the HD8 is best for my car/style. If the grip is high the CRC bodies and the AMR should be good. You really should try a couple of bodies with no changes to the car and you'll see the differences.
Seriously, if your track doesn't have a lot of grip start with a Parma Speed 8 HD. If you're in the middle try a Protoform Speed 12 or a Parma EE-1, if you have lots of bite go Protoform AMR or CRC R8C. But like Chris said try at least 2 because they are different and you will like one more than the other.
UK 12th Nationals Live
next meeting is Tamworth on 11th & 12th December
next meeting is Tamworth on 11th & 12th December
In an effort to keep 12th scale racers and followers up to date and in the loop with news and results, the national series will now be covered online.
From the Tamworth national onwards you'll be able to visit pages on Facebook and Twitter to see what's going on if you're not at the meeting!
On the facebook page there will be round by round updates including images of the qualifying lists as well as notable occurrences and things that happen worth mentioning. Following each meeting you'll also be able to see photos, videos and reports from the event.
To access the facebook page, Click Here
Twitter will be used in a similar way, but due to its more basic nature it'll be limited to short text updates on the movers and shakers in each round and the finals.
To access the Twitter page search for '@BRCA12thScale'
From the Tamworth national onwards you'll be able to visit pages on Facebook and Twitter to see what's going on if you're not at the meeting!
On the facebook page there will be round by round updates including images of the qualifying lists as well as notable occurrences and things that happen worth mentioning. Following each meeting you'll also be able to see photos, videos and reports from the event.
To access the facebook page, Click Here
Twitter will be used in a similar way, but due to its more basic nature it'll be limited to short text updates on the movers and shakers in each round and the finals.
To access the Twitter page search for '@BRCA12thScale'
in this particular case it is the speedo. Version 104 is supposed to rectify the issue that causes him to get pulled out of every corner with a lower start rpm to the speedos timing maniputlation.
Right now the powerband doesn't really come in soon enough.
I know Noavk will get the software dialed in and then he will be right where he needs to be....
Right now the powerband doesn't really come in soon enough.
I know Noavk will get the software dialed in and then he will be right where he needs to be....
Thanks for the help
Jeremiah
Last edited by ThrottleKing; 11-27-2010 at 04:32 PM. Reason: revision
Mark talks about a CRC car here but the principles apply to all:
http://markpayneblog.blogspot.com/se...a%2012th%20Car
These days balancing has almost replaced tweaking. If you balance the car exactly, it should be nearly perfectly tweaked. Which he explains.
http://markpayneblog.blogspot.com/se...a%2012th%20Car
These days balancing has almost replaced tweaking. If you balance the car exactly, it should be nearly perfectly tweaked. Which he explains.



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