Instead of a Pinion, Use a clutch bell? and double check my gearing please. - RC-Monster Forums

Jahay

Hi Everyone!

Firstly... Thanks to simplechamp for delivering me this awesome ofna centre diff!

I am quite shocked by how amazing the build quality is!

Question 1
Anyway, as i decided against the slipperential and because i am converting my savage flux to a CD rather than a tranny which has a slipper... I feel i may need some sort of give in the drive line....

I saw somewhere but i cant remember, someone using a clutch bell and pads to protect the motor. Basically a nitro setup...
Is this easy enough to do? Would it be possible for my 1520? And is it necessary taking into considering the weight etc of my ext savage?

Question 2
I just want you guys to check that my gearing is correct before i buy the wrong pinions. I am just a little confused as it looks ill be using 9t-11t pinion to get my desired speeds... Smaller than i have ever used (never had a centrediff)

Does this look correct? These are the speeds that i am running now with my current 18/47 gearing, and with no heating issues etc... so i am looking to maintain these speeds with the centre diff....

Thank you

_paralyzed_ · 07.16.2010, 06:59 AM

1.- Tekno RC makes a clutch adapter to use standard clutches on electric motors. This would give you an area for stress relief, but also adds maintainence to your vehicle because of worn out clutch shoes and bearings. Another factor to consider is that the clutch systemadds the width of the clutchbell to the overall length of your motor/gear combo.

It is a viable option, but not one I would choose.

2.- That gearing is correct. A transmission offers the gear reduction you need for a good spur/pinion combo, but adds a weakpoint. A CD eliminates the weak point, but doesn't have the gear reduction necessary for an ideal spur/pinion combo. But it will work!!

Jahay · 07.16.2010, 07:04 AM

Thank you for the fast response...

1. How strong are these motors are taking abuse? i have basically been running my savage with the slipper tightened all the way so far... Should the motor be fine? As long as i dont land and big jumps on power then nothing should really go wrong correct??? I dont mind my weak point being my pinion as it is easy enough to change, i just dont want to be replacing my f/r diffs and CD spur.

2. i guess having a very small pinion means it will wear very fast... at least that will wear and hopefully wont wear out my spur too quickly...

I was looking at the Novak Pinions, hopefully they should be all gd

_paralyzed_ · 07.16.2010, 07:16 AM

The motors are quite strong and take abuse well. Not landing on throttle (driving sensibly) will keep your motor running for a long time. Have fun!

Jahay · 07.16.2010, 08:11 AM

thats all i needed to hear. Thanks a lot!

thzero · 07.16.2010, 11:04 AM

Pictures and info!!

Quote:

Originally Posted by Jahay

Hi Everyone!

Firstly... Thanks to simplechamp for delivering me this awesome ofna centre diff!

Jahay · 07.16.2010, 11:06 AM

on what??? my conversion??? once i start installing everything, pics will be taken and posted in my thread.

thzero · 07.16.2010, 11:50 AM

On the ofna center diff that simplechamp did for you!

Jahay · 07.16.2010, 12:00 PM

will get pics up tonight.

Finnster · 07.16.2010, 04:54 PM

I don't know if you can use a CB with Mikes CD mount. The adapter plus CB will extend the gear face out quite a bit. You maybe able to reverse the CD so that the spur is opposite of the motor, but IDK.

Tekno always used set back motor mount to acct for the length