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R/C Tech Forums Thread Wiki: Schumacher's new K2 4wd buggy ..!
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Welcome to the Schumacher K2 Wiki!

Please feel free to add tips and tricks as well as any information that you would feel is beneficial for everyone to know.

Introduction and Pictures Introduction and Pictures

ElectronicsSetupElectronicsSetups

Setup SheetsSetup Sheets

EmulsionShocksEmulsion Shocks

Tony Newland Gear Diff BuildTony Newland Gear Diff Build

Help I Keep Breaking Front Arms

With the K2 Schumacher sarted using an adjustable hub design that required
a relief cut in the arms for the steering knuckle to clear. The easiest solution
until a revised arm is to run the old style arms without the relief cut. Run the
hubs in the High position and set your steering end points down so the steering knuckles don't hit.

SCHU3597
SCHU3407 MED Flex

There is a newer batch of the SCHU3407 wishbones which correct the weakness in the previous front arms.

Suggested upgrades/spares
Strongly suggest to buy 10 alloy front alloy pivot blocks-U3556 the A & B front plastic pivot blocks-U4798 will break soon.

Have some shock seats spares, alloy v1-U3611, plastic-U3937, alloy v2 (off-road)-U4890

Have some spare shock shafts available U3668 & U3669
MIP pucks an Excellent option!

Misc

Other wheels that fit apart from the Schumacher wheels
Losi 22-4 wheels will fit on the front the rears will work as well!
AE b4, b5 & b6 will fit on the rear
Be sure to lock tight the track screws and rear strap this is a must!!!

AE (12mm) and KYO fronts will work with .5mm spacer - available through AVID


Don't buy the purple titanium turnbuckles as an upgrade there thread is too small and they wander too much. Lunsford Super-duty titanium turnbuckles fit very well they are 3.5mm threads. Get the 1 3/4", 2 1/8" & 57mm lengths. I did not replace the Centre Track Rod.

** When running the Super Duty turnbuckles with the stock captured ball ends, be sure to check for binding in the front steering and camber links after each run - tumbles and glances off the pipes cause them to flex and slightly twist and can bind up the front suspension ... The fix? - simply take a turnbuckle wrench and twist the link back and then forward to it's original positon .. consider doing this as a maintenance step after each run ..

Suggested Gearing

5.5 - indoor high bite clay 83/20 (+/- 1 tooth for layout and conditions etc)
6.5
7.5
8.5
9.5
10.5
13.5 At SRS Arizona I ran 75/28 buggy was quick! RCM lockout worked great!
17.5 - FDR between 5-6 depending on track. E.g. 35/66 down to 30/69 slipper eliminator in use. Different options within the thread. I use B5M exotek eliminator and file it to fit.

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Old 11-18-2015, 12:25 AM   #61
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I can't wait for this car to come, it looks awesome. I tried to make a 4wd KF2 but ran out of time due to working away from home, the biggest issue I had was getting the front belt over the motor. With the K2 it looks like Schumacher have done this and then some, chassis looks well balanced and the motor now rotates the same way as the SX3 did compared to the wheels. I like the look of the captured ball ends as well, I changed to the rose joints for the outer steering link ends after having these pop off some times at full lock, the other issue I had with the standard ball cups was on the rear camber link but I found on the KF2 changing to the alloy rear camber link helped as the ball cups were rotated 90 degrees and in the same plane as the outer ball cups on the rear hubs.
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Old 11-18-2015, 02:31 AM   #62
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I've preorderd mine!
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Old 11-18-2015, 09:26 AM   #63
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I've preorderd mine!
From where?
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Old 11-18-2015, 10:15 AM   #64
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From where?
From the german distributor, cs-electronics.
I'm from austria, and this is my closest shop, that carries schumacher cars and parts.

It says, delivery in one week...
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Old 11-18-2015, 11:15 PM   #65
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discountrcstore.com
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Old 11-19-2015, 06:30 AM   #66
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Originally Posted by MelKF2 View Post
Well lets hope it works out, I have noticed that in all the picture's now posted on the fatory driver's buggy's they are not using the new ball stud's?
They were one of the last parts to be ready so the team couldn't use them.
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Old 11-19-2015, 07:31 AM   #67
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They were one of the last parts to be ready so the team couldn't use them.
Hello Chris,

Could you please tell me, how your impressions are with saddle packs on this car?
As i do not have shortys yet, i would like to run the k2 with saddels, or is it better to get some shortys?


Thx in advance and
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Old 11-19-2015, 03:16 PM   #68
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K2 shipping tomorrow in the UK! Can't wait, I pre-ordered mine from MB Models.
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Old 11-19-2015, 03:43 PM   #69
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Looking at Ben Jemison's buggy on petitrc, he has added what looks to be about 110g of lead, 55g to each side, of his K2 while running a length wise shorty. To me, that means you may as well run saddles. My shorty pack is 206g, my saddle pack is 266g. I plan to add the Yokomo 25gx2 saddle pack weight set under the packs to give me the extra 50g in weight.
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Old 11-20-2015, 01:14 PM   #70
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Picked up my K2 kit today starting build tomorrow!! So many bags of bits! Reading through manual tonight, not built a Schumacher kit before all been Tamiya kits before, may need some help, newbie after 20 year gap in rc. Any help appreciated.
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Old 11-20-2015, 01:56 PM   #71
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Originally Posted by Navek668 View Post
Picked up my K2 kit today starting build tomorrow!! So many bags of bits! Reading through manual tonight, not built a Schumacher kit before all been Tamiya kits before, may need some help, newbie after 20 year gap in rc. Any help appreciated.
Congrats to the choice and restart!
I'll await mine next week to arrive
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Old 11-20-2015, 03:25 PM   #72
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Originally Posted by Navek668 View Post
Picked up my K2 kit today starting build tomorrow!! So many bags of bits! Reading through manual tonight, not built a Schumacher kit before all been Tamiya kits before, may need some help, newbie after 20 year gap in rc. Any help appreciated.
The builds are usually very smooth and trouble free. One bag per step in the instruction manual. Fit and finish is usually top notch. But yeah, lots of little bags. Try not to build it in a carpeted room as you'll be finding staples in the rug for months after.

Mine is on the way, hopefully next weekend the build begins.
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Old 11-20-2015, 06:09 PM   #73
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Default Merry Xmas to me!

Got mine today! let the build start now!
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Old 11-20-2015, 11:16 PM   #74
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Got mine today! let the build start now!
Wow, thats nearly a second car on spares!
What are common spar parts to be good to carry in my pit box?
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Old 11-21-2015, 06:55 AM   #75
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I bought a lot of spares for my K1. Only thing I've used over 2 years are front arms, front uprights, front shock tower, front suspension hangers, and F&R shock shafts. Nothing out of the ordinary for a 4WD buggy, I tend to replace with the aluminum hop ups when the original plastic breaks. Keep the short front hinge pins handy too as they back out over time.

Oh, don't forget some spare spur gears. At least this version doesn't use the 98T "Pizza Cutters".
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Last edited by trevcoll; 11-21-2015 at 07:04 AM. Reason: Forgot something.
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