Help with gearing/new track astro/dirt
I have a cougar sv pro are new track is half astro and dirt ,I am running a 10.5 120a motor combo,24/80 gearing stagard rib ft mini spike back.Now :confused: more power ? Change gearing ? What timing ? And help would be greatly appreciated
Cheers. |
Hi there, I've been using the below as a ballpark gearing guide for my cougar:
http://www.teamnovak.com/tech_info/b...r_gearing.html With a 10.5t motor that would mean a 26t pinion with your 80t spur to give a FDR of 8.0 if you haven't changed the internal gearing from standard. I'm no genius though so I'm sure someone has a better suggestion :thumbsup: |
Cheers but I was told that if you have a smaller pion you will have more top end but Iam no expert .:confused:
|
the advice given is correct. 26-27 tooth is a good starting point and will give more top speed
|
Cheers.....:thumbsup:
|
Whenever I've ran a 10.5 I usually ran 78/27. Considering half your track is dirt I would consider a smaller spur like a 76 and a 26 pinion.
This will move the motor back slightly and help give a little more weight to the rear to aid traction. |
Thats good to know but schumacher has only 80-83 spur do you know another place or a another brand that will fit :(
|
Quote:
|
I run with a 7.5t motor, schulze esc, standard cougar internal gearing and a 26/80 ratio on astro at Southport. I'm slightly down on top speed but still have plenty of torque left at mid throttle.
I suggest a 26 or 27 pinion to start with. does any one have the calculations for FDR on a cougar |
Try the FDR calculator at the bottom of this page:
http://driftmission.com/tools/ Countersteer Ratio/Final Drive Ratio is your internal gearbox ratio which as standard is I believe 2.6 If you've got an Android phone I use a free app called Gears from Nor-cal Hobbies, there are loads kicking about though... PS - If you're down on top speed I found the biggest difference was changing/updating ESC software as you're geared high anyway |
bit of stupid moment really... I knew the internal was 2.6 and i knew my external ratio, not entirely sure why i didn't do the rest really.. :blush:
I thought 8 FDR was about right, its probably the motor not being a real 7.5t (ebay special) its coming off warm ish so I may go up a little further see what happens. |
Quote:
|
[QUOTE=toddzellia;671568]Thanks but all I saw was 80-83 but I wrote them an email to see if they could help me out CHEERS.:thumbsup:[/
Due to customer demand from around the globe, we have again increased the range of spurs we produce for the Schumacher Cat SX & Cougar SV. Just added to the current range of 78T thru 83T are the following, 72T 74T 76T Posted by RW Racing at 03:07 1 comment: http://img2.blogblog.com/img/icon18_edit_allbkg.gif |
All times are GMT. The time now is 11:06 AM. |
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
oOple.com