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Old 02-08-2002, 07:44 PM   #1186
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Just a defect in the construction. You probably know how to set tweak, as long as you set it right, it will be fine.

Josh
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Old 02-09-2002, 02:01 AM   #1187
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Hi guys. Greetings from Malta.

Adam. I hope to be down at the track this afternoon, weather permitting. I'll bring the MR4 and Josh's TC3 down for a photo session if you don't mind. Thanks.

Darkside. This crash testing business seems to be becoming a ritual this season. Did you hear about Coulthard testing the MP17s roll bar yesterday? He had a big one apparently, as had Fisichella and quite a few others.

I finally got the new camshafts for my race car yesterday and have started putting it together. The National Hill Climb Championship starts in 2 weeks, so I had better get on with it.

Are any of you following the Snowbirds? Sounds like a good meeting.

I broke a front wishbone on the MR4 yesterday. Haven't done that in ages!

Regards

Joe from sunny Malta.
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Old 02-09-2002, 08:14 AM   #1188
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Johnbull: No I didn't hear that. The teams are pushing the limits, so stuff like that is bound to happen.
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Old 02-10-2002, 11:31 AM   #1189
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heres johnbulls mr4 sp!
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Old 02-10-2002, 11:35 AM   #1190
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rear
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Old 02-10-2002, 04:09 PM   #1191
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I purchased a MR4 special about 8 monthes ago. I talked to some people that race at my local race track and seen some comments made in disscusion boards online. And what they're telling me is that, you need to buy some more things to make this car hook up. For instance, it's better to use the old arms instead of the ones that came with the kit?, cut some of the reinforcements on the top chassis brace for more flex?, position the servo 45 degrees so that you get faster steering? If this car is a special edition, why do we have to do more modifications to it? Seems like i have wasted a lot of money while i could have bought another car like a TC3 or a XXX-S. My loss
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Old 02-10-2002, 06:01 PM   #1192
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The car is fast stock, but those are just ways of making it faster

The old style rear arms are more of a tuning option. They flex a little more, so you get more rear traction with them, but they are not as durable. You may want to try them.

Mounting servo 45 degrees- no, don't need to.

I am going the other way, making a carbon fiber top deck to stiffent the car up. On the old car, people would cut braces out of the top deck, but unless you are on a very low traction track, or a bumpy track, you shouldn't have too. The car has quite a bit of flex allready.

Keep in mind that people are modifying other cars too.

Good luck,
Josh
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Old 02-10-2002, 08:09 PM   #1193
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Johnbull,
Car looks interesting, last time I saw it you were running the two turnbuckles up top.
Like the neon Ballends
Rear gearbox machining looks interesting, did you cut under the rear diff pulley and spur gear as well, so that any stones that make it in there can go either out the back or just dropout under the chassis? I'm keen to give that a go when I can borrow a Dremel
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Old 02-11-2002, 01:33 AM   #1194
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Hi guys, greetings from Malta.

Simon, thanks for kind comments. I have cleaned up and dremelled both front and rear gearboxes, both top and bottom. As you say, the stones find their way out as quickly as they find their way in.

You're right about the top brace. I changed from a rose joint in front after I broke 2 front bulkhead caps. The front end of the alloy shaft now has a stud tapped into it, with rubber O rings either end of the shock tower, to allow a bit of flex there too. It's had a few bashes already and doesn't seem to have suffered.

In case anyone's wondering about the two receivers, the black KO is actually the receiver, the orange XXL case houses the personal transponder. It just seemed to fit so well I couldn't resist it.

Speedo. Finally you can see the front triangulations I have been talking about. Pretty simple don't you think?

Other than that's there's not much that's different. Incidentally the motor heat sink is a Fastrax TC3 unit. Fits straight on.

Regards

Joe from sunny Malta.
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Old 02-11-2002, 02:09 AM   #1195
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Hi John,

Like to know what is the C-hub that you are using ? Do you drill additional holes on the MR4 C-hub or did you use similar from TA-04R ?

I tried the similar using Express parts, but it don't quite work for me.
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Old 02-11-2002, 07:39 AM   #1196
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Johnbull: I was just about to ask what you were doing with two recievers!

Man, you know you have too many colors on that car!

Looks great though. Typical "Johnbull Racing" modifications throughout!
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Old 02-11-2002, 07:40 AM   #1197
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Hi guys. Greetings from Malta.

Ongbenghui. The C hubs are modified MR4 items. I use the Fastrax alloy ones or the factory ones, depending what caster angle I want.

All I do is grind off the verticle brackets that mount the standard top link, so you have a flat surface at the top.

The Trinity top kingpin mount then screws straight in ,just like the standard item, only with a longer bolt. The Trinity bit is off their pan car. Should be easy to find.

Haven't seen you on this thread for a while!

Regards

Joe from sunny Malta.
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Old 02-11-2002, 04:20 PM   #1198
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Yeah, looks good john. I've just dremeled out the back of the rear bulkhead cap (little piece that goes over hinge pins) at the bottom so grit will find a way out. Also have a hole under the spur gear because I needed it to use my 96 tooth BK pitch spur, along with a trued down outdrive to match. And will cut out the place where the spur rides under the bulkhead, to match my carbon fiber top deck when I get that made.

One way broke on Saturday, so I have a HD one coming in, along with the kingpin-ballstuds to mount to front link on the castor block, and also have modified the rear hubs to give that a try too.

I think I was getting closer with setup with the one-way though, still wan't great, but using the upper hole to mount the arms in the bulkhead certainly helped.

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Old 02-11-2002, 05:10 PM   #1199
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I now have posted on my page what should be Chris' setup from the Novak race.
www.mo-net.ws
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Old 02-11-2002, 05:48 PM   #1200
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Josh,
How long had you been running the front one way? Did it last a while before breaking?
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