Congrats to Paul Lemieux for his win at the ROAR Nats in sedan, and Ralph Burch for his TQ. Don't know what happened to Ralph's car early on in the main, but these two have been laying it down all over! These guys are always helpful, and supportive to racers at every event I have been to. Hopefully next year I will get a chance to race the nats..... and just race more often.

Yup, congrads to Paul. Couldn't have been won by a nicer guy!

Let's see I may be able to make that race. I know A bunch of people from around here are planning on attending as well.

i know its a big ask,

but can someone measure the width or the front diff..

from 1 bearing to the other bearing.

Inside bearing to inside bearing: 31.90

Outside bearing to outside bearing: 39.90

Outside eccenter to outside eccenter: 41.90

Gotta love CAD-programs.

what do you mean by 'eccenter'? is that with the bearing hub on?

just want to know outside to outside


also the weight of the diff? and weight with xceed lightweight gears, and cups

That's real close to a Mtx4r front oneway

The Mtx4r outside bearing to outside bearing oneway is 39.94

What about the rear diff measurement?????

Come-on fire up the machine again

the one way measureed 42mm bearing to bearing on the RRR..

if anyone has a nt1 diff they dont need, im willing to buy it to try fit it in the rrr.

anyone kind enough to count the teeth in the rear diff?

If you look at the Xray manual. The rear drive pulley on the nt1 is a 20 tooth.
And the Nt1 has a final drive ratio of 2.05 that means the rear diff pully should be 41 teeth. this is how I found it

If I'm wrong you'll let me know.


Pass you soon...

What's a good wt for rear diff when running a front spool on high traction track

Eccenter is the adjustable cam which houses the bearing, it's eccentric, so called an eccenter.

The measurement shown in your picture is the bearing outside to outside measurement so 39.90.

I have the Capricorn diff gears and pins and Xray lightweight outdrives, but I forgot how much they weighed, it was around 20-25 grams lighter compared to a stock diff.

Edit: front diff 24 grams, rear diff 27 grams.

Would recommend the Capricorn diff gears if you want the plastic gears since they last and have been thoroughly tested, I've already seen multiple broken Xceed diff gears.

Rear diff is 28.6 outside bearing to outside bearing.

Btw this is what I'm currently working on:



I really dislike the blade-type ARB, and almost bought a Serpent just because of the front wire type ARB the 733 has.
When the Capricorn set was released I decided to go for it and make it work on the NT1.
Received the set yesterday and it seems to be more of a challenge as I thought it would be.

I still have to machine the sides of the bulkheads so I can fasten the red bushings and have to make some carbon sideplates so I can fasten the top sides op the front bulkheads.
Had to cut the front off so make space for the ARB, but lost the two front mounting holes in the process.
Also planning on cutting two carbon plates for the downstop adjustment.

Planning on testing the system this Saturday.

40K when you are a starting driver, 60K when you are an average driver and 80K when you are a pro.

With high traction tracks you should always try to increase the rear diff locking as this will give you maximum acceleration.
However with very thick rear diff oils the car only works when you are right on the racing line, 10 cm's off and the car will spin out, that's why I would recommend different oils for different skill levels.

Thanks