CAT KF Setups

[James]

Mine from Worksop 10/11/13


http://www.petitrc.com/setup/schumacher/setupcougarkf/KF_JamesHelliwell_Worksop20131110/

[spud31]

James i cant get this to enlarge :-(

[gazhillAE]

http://www.petitrc.com/setup/schumacher/SetupSheetsSchumacherCougarKF.html

[wrighty]

my set up from weekend
http://www.petitrc.com/setup/schumacher/setupcougarkf/KF_JamesWright_201312/

[dobber]

my set up from weekend

Dude, it's too small to view. Any chance you can make it bigger?

[Cockerill]

Petit RC have a great database of setups here:

http://www.petitrc.com/setup/schumacher/SetupSheetsSchumacherCougarKF.html

I've added a wet Astro setup from RHR which was great, would recommend it for people looking for a starting point for people running on low grip tracks.

[chrispattinson]

Cheers Tom, much appreciated. Are you spacing the steering bellcrank up any (and matching bump steer spacing on knuckle arm) on that damp rhr setup?
.... And, did you leave the rest shocks in front of the wishbone?

[Cockerill]

Yeh, I've got 4mm under the bell cranks and 4mm under the outer Ballstud.

[CARB]

Hi
What is the idea of the washers under CTR as I have not noticed much bump steer on a SV2 which think shares the same set up as the KF
CARB

[mark christopher]

I believe it smooths the steering

[James]

Worksop 5/1/14 KF Setup.

Track seemed slippier this round to me. 3 degrees rear camber helped a lot also 1 degree rear alloy blocks. Finished A7.
http://i220.photobucket.com/albums/dd296/mrtymcfly/Setups/ScreenShot2014-01-09at150627_zps0fdc100d.png (http://s220.photobucket.com/user/mrtymcfly/media/Setups/ScreenShot2014-01-09at150627_zps0fdc100d.png.html)

[shaungooner]

My KF setup from Caldicot RC Racers club night last night

This thing is awesome!

Ball diff really transformed the car, with the gear diff I was really struggling to get the power down but with the ball diff it was so smooth and easy to drive, it really felt like I could push it hard and the car just kept giving :lol:

https://www.dropbox.com/s/xqlkc38mx8cs42l/KF%20Caldi%2017012014.jpghttps://www.dropbox.com/s/xqlkc38mx8cs42l/KF%20Caldi%2017012014.jpg

[Maddy]

Can someone please let me know what rate the kit springs are on the kf.
Cheers.

[dobber]

I think they are 4 front and 2.5 rear.

[gazhillAE]

I think they are 4 front and 2.5 rear.

Yes :D

[Maddy]

Thank you,
Gaz just a quick one to ask how well did you find your kf at southport indoor.
Ran mine there today on its first time out in near kit set-up with the rear alloy block upgrade,
Just felt as if i couldnt push to hard through the corners,having to back off a little.new cut staggers and blocks both in yellow,grip wasnt an issue but just felt unstable.
Cheers
Dave

[jrenton]

Will be running the KF at Herts this weekend at the Mid South regional. Never run at this circuit before. Looks like it will be dry. Does anyone have a setup for this circuit? Is it Low/Med/High traction?

Cheers, John

[wrighty]

All 3 if damp in the morn it will be slippy then grip comes up as it drys but then grip fades as sand comes up

[lee.willows]

guys
i am building a kf and put sv 2 rear wishbones to length the car. What spacing should i put there and also the pin is short is it worth getting the sv2 pin aswell?
thanks for help
lee

[Adam F]

I would try it in stock setup first before changing anything too drastic, Tom C's setup is awesome... (The std chassis one)

[TheTallOne]

Having a head scratch moment :)

I'm running an LRP 8.5t (76t spur, 22 pin) on carpet and you could cook an egg on the chassis after 4 mins racing. Because the motor is so hot!

I dont understand!! I have checked various set ups and most recommend the 76 spur.

I'm thinking that the belt might be too tight. But.... I have done about 3 belts already in a year and I suspect I'm not running the belt tight enough and they are stripping.

Could it be speedo?

If anyone has any ideas please, please share them.

Cheers in advance.

[cornishboy176]

I am using a 24t pinion on mine with an 8.5 HPI, and no overheating problems at all

[badger5]

Does sound like you have a transmission problem to me, and if you've done three belts this year it does sound like something is amiss. How have the belts failed, snapped or frayed on one side?
If you take the pinion off the motor how easy does the transmission rotate? Any binding? I always find it a bit weird that Schuey never give any guidance in how tight the belt should be, I always gauge the belt tension by twisting the belt halfway alone the top run, you should be able to twist it 90 degrees without too much force.
LRP's do like to run hot though.

[badger5]

What speedo are you using as well? Does it have separate software for mod and stock, if so does it have the mod software loaded?

[TheTallOne]

Thanks for the quick reply :)

The belt always fails due to significant teeth reduction along roughly 3" of its length (never snapped a belt yet! [fingers crossed]).

Removed the pinion gear to test transmission:- Feels smooth with no binding. Resistance of the drive feels a lot like a gear diff with 10K oil in it. i.e. if you spin the rear wheels then they come to a stop within approx 1 free wheel rotation. Also when you spin the rear axle by one wheel the diff does not activate.

The belt easily rotates 90 degrees. I like your tip to gauge the belt by the way, I have only seen / been told to measure deflection which to me seems daft if as you don't have a set force applied.

I so wish someone sold a belt tension like they do for timing belts on cars.

I currently run a Vampire SR+ Speedo. I have never heard of different software for it and the manual does not mention that there is Mod/Stock options. I will look into that. Is it possible the speedo could be somehow giving the motor to much current? [The motor has not been tampered with or adjusted in anyway, its straight out the box]

Thanks again for your thoughts on this.

p.s. would the slipper being too tight overload the motor? [really grabbing at straws now]

[Dave Dodd]

Hi all.
I'm after a carpet base setup for the 1st generation KF please.
The petitrc pages do t seem to be working...

Cheers

[Npdp72]

There are some on the schumacher website.

[Thomas B]

Hi
Locking for a grass start setup for KF2 and K2. We have the Swedish championships next weekend and have never raced on grass, only astro and dirt. Not mutch on petitrc and Schumacher website.
Thanks

[ianjoyner]

With the KF2 on grass I'm finding Schumacher mini spike rears and low profile cut stagger fronts work well. I find the the low grip layout easier to drive than mid, it also makes it easier to get the weight further back which helps if the grip is low. If the grip is very low you can flip the rear wishbones to shorten the wheelbase and get some more rear traction.

Ball diff will be easier to drive.

You may want to run pistons with bigger / more holes than kit if the surface is rough. The 1.8 / white Core rear spring will also help if the rear is loose. The kit roll centres / alignments work well.