Manticore

for those who are interested at car setup, there are plenty of information here

RClover

that's what i usually recommend to rookies in the rookies' tread!

stefan

Thanks guys, good info on the overdrive issue!!

Next question

Can somebody explain the differences between the Nova Rossi S1, S2 and S3 engines and parts interchangeability.

This is becoming confusing and the NR website dioesn't provide any insight.

Thanks

kevink2

Recently had a small chat with another member of this thread (here's a hint: his handle starts with a P and ends with a T)regarding overdrive for an MRX-3. I thought I might post his reply because it applies also to the MTX-3:

My q:
Recently I began using the overdrive 25T pulley, but I think I may be stressing my front belt more now than before, because I've been stripping teeth lately. I normally run with about a 6mm split. Should I be using a different split with this pulley? The car doesn't seem as out of whack handling wise with the overdrive pulley in comparison with my sedans, but the stripping thing is bugging me. I've even got a front belt tensioner on the car that I devised, but it's not helping right now.

He replied:
"...regarding your MRX-3, great car! We have been running these for the last 1 1/2-2 years and I have to say it is one of the easiest cars to build and work on that is on the market. Running the 25T pulley allows you to run smaller front tires i.e. larger splits (@9mm) while still maintaining an overdrive ratio of 1 (aproximate numbers here). The reason that you would do this is primarily that it raises your roll axis on the front end. Raising the roll axis means the car stays flatter through corners puts more weight on the inside front tire when cornering which is not necessarily bad as the outside tire is being loaded by the G's of cornering so it argubly makes the car corner more efficiently. Having said this, when you start talking about roll axis things are getting realy complex and it's difficult to do without drawing out diagrams to show the geometry of the suspension and how the pivot points intersect. This is best done talking face to face with some one. However I hope this gives you an idea at least of what running in the case of the MRX-3 a 25T pulley and on the MTX-3 an overdrive pulley does and why it does it.

Regarding the belt stripping you probably have an overdrive chart for the car. If so then looking at it you should be running about a 9.5mm split. With anly a 6mm split you are running a massive amount of front overdrive (basicaly off of the chart that I have). Try running something like 74/64.5 which gives you a ratio of 1.004 to start. Also try running a couple of washers or shims under the mid bearing block to raise the pulley which should tighten the belt a little."

I've been schooled...

mitch179

Thanks heaps manti, u know your shit

I asked rody on the RB forums and he said with 20% it should be fine to not add a shim but if i wanted to go to 25% i would need a head shim

and i will remember when im building the kit to do that little fix so i dont bust the tank

Manticore

there are endless information about car setup on internet.

there is another good site that gives excellent car setup information here

Motorman

iTrader: (1)

PMT
Good stuff bro. I learn something new every day. everybody's got a niche.

Ron Rosetti
Thanks for the 411 on precambering the other night. It was priceless dude. I owe ya!

Jonathan

iTrader: (2)

Here a thought.... If I can get PMT to set up my car, Dennis to tune my motor and Kevin to paint my body...

Manticore.

While it's true info is out there...PMT seem to have a way to make basic info basic...

RCLover

I guess your line of thinking would make Salven a rookie also... btw. where do you race at?

Kevin

Thanks bro... and if you got schooled... I know a lot of people have as well... whether they want to admit it or not.

Manticore

oh really?

Jonathan

iTrader: (2)

Initial D

Thanks Bud. My son is verrry coool. I'm very blessed.

Roger

Cool man... Are you going to the McCoy race?

Sparsky

Yeah....He was born on Chinese New Year's Day!!!

Thanks guys

Roger

iTrader: (10)

Manticore, PMT, KevinK2, and other mugenist: Just wanna thank all of you for all good advise on the MTX-3. I've learned alot just by reading some of the information that you guys post here. Again, thanks.

TBR: Dude, I love that avitar; Michael Jackson's smoooth criminal. Thats hella funny Where did you find that ??

Roger

iTrader: (10)

I really wanna go to the McCoy race but I've got plans already for that weekend. I know that York is going this weekend to get some track time. As for me, i'll have to wait for the nats.

Manticore

Hi Roger !

TBR

My mate just emailed it to me I think its pretty funny too.

PMT

Thanks Motorman, I'm getting ready to start working on engines soon Just kiding, I think that I will leave that to you!