MRC / Academy SB V2 Thread  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       


Tamiya Land Cruiser CR-01 Crawler Assembled w/ ESC - Kit
Seller:  sheograth
Details:   $300.00   |  9/29/2008   |  Classified Ad
We will rotate YOUR AD in this spot if you select "Forum Featured" when placing or editing your ad!

All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> Academy Racing (MRC) Support >> MRC / Academy SB V2 Thread
Page: [1] 2   next >   >>  

Login
Message << Older Topic   Newer Topic >>
MRC / Academy SB V2 Thread - 5/11/2006 7:11:44 PM   
Cainlord


 

Posts: 164
Joined: 1/11/2006
From: , ND, USA
Status: offline 		I figured lets start a specific thread concerning the SB V2 so we can discuss issues found, hot mods, and our race experiences.

I have completed my initial build less of course the body painting and here are some things I have found for the USA version (re-inferno's issues are all still present):

1. The steering drag link doesn't give enough throw, I went with a turnbuckle / ball cup setup and now have maximum throw. Will see how well this holds up.

2. The diff setup still bottoms out similar to the SB V1, however it feels alot smoother than before. Will run it stock to see how it holds up.

3. Chassis with all the cutouts allows a good amount of flex. This may be an issue on certain tracks, looking to see about going with a graphite chassis when it becomes available.

4. Kit didn't include the washers that go over the front axles before mounting the hex to the cone. Contacted MRC to see about getting them in. Without them the wheels have a slight wobble

5. Rear droop is adversely affected by the fact the dogbones will pop out at certain angles. I went with an o-ring in each axle to push the dogbones in more but made sure that maximum compression of the shocks didn't hit the diff cups. Appears to be working.

6. Mounting of the Tekin G-10 speed control didn't have enough mounting surface. Will rig up a mounting plate to use.

7. Motor mounting system is SIGNIFICANTLY better than the old setup.

8. Spur Gears are nice and big and the slipper is easy to adjust.

9. The FRP chassis components feel higher quality than the SB V1s, not sure why, they just do.

10. Suspension components are significantly stiffer than the previous setup.

11. The front hingepin brace is plastic along with the bulkhead. This could be an issue. An alloy one should be pretty easy to manufacture.

12. Outdrives are composite with composite savers. Alloy savers would be a nice touch on the pro as I am not sure how these will hold up but will thrash them good with a 9 turn to see how it goes.

All in all I like the SB V2 better than the V1 based on initial build. I plan to run the vehicle this weekend through a good bash session and possibly on the track utilizing a 9T motor.

       Post #: 1

RE: MRC / Academy SB V2 Thread - 5/25/2006 4:22:04 PM   
AEoffroader


 

Posts: 15
Joined: 10/8/2005
From: South Lyon, MI, USA
Status: offline 		Putting an o-ring in the rear axle to move the dogbone further into the diff outdrive...wish that was a tip in the manual. My outdrive shredded and out went the dogbone. To get more steering trow I put the ball studs in holes 2 and A and slightly shaved the tip of the steering rack and I now have full throw.

(in reply to Cainlord)
       Post #: 2

RE: MRC / Academy SB V2 Thread - 5/26/2006 5:05:59 PM   
Cainlord


 

Posts: 164
Joined: 1/11/2006
From: , ND, USA
Status: offline 		If you have chance can you post a pic of your steering mod? For the V2 faq I would like to have pics of the mods done.

(in reply to AEoffroader)
       Post #: 3

RE: MRC / Academy SB V2 Thread - 5/31/2006 3:41:16 PM   
AEoffroader


 

Posts: 15
Joined: 10/8/2005
From: South Lyon, MI, USA
Status: offline 		I have taken the pics of the steering rack but can't get my comp. to load them properly...I'll keep trying.

(in reply to Cainlord)
       Post #: 4

RE: MRC / Academy SB V2 Thread - 6/1/2006 4:48:48 PM   
AEoffroader


 

Posts: 15
Joined: 10/8/2005
From: South Lyon, MI, USA
Status: offline 		Here's a shot of the trimming...

Attachments
Click to see fullsize image.
Click for fullsize

(in reply to AEoffroader)
       Post #: 5

RE: MRC / Academy SB V2 Thread - 6/1/2006 5:49:33 PM   
Cainlord


 

Posts: 164
Joined: 1/11/2006
From: , ND, USA
Status: offline 		Thats great. I'll look into adding it to the FAQ.

So how are everyone's V2s doing?

Any news?

By the way, did everyone's V2s come with the shims for the front axles? mine didn't, not sure if that normal.

(in reply to AEoffroader)
       Post #: 6

RE: MRC / Academy SB V2 Thread - 6/1/2006 9:29:04 PM   
AEoffroader


 

Posts: 15
Joined: 10/8/2005
From: South Lyon, MI, USA
Status: offline 		My v2 came with shims. they are the same ones that are used to shim the diffs. but I am missing a screw. I had to borrow one of the ones that holds the battery tray in.

(in reply to Cainlord)
       Post #: 7

RE: MRC / Academy SB V2 Thread - 6/2/2006 3:49:49 AM   
Cainlord


 

Posts: 164
Joined: 1/11/2006
From: , ND, USA
Status: offline 		Hey Everyone.

I got to finally do some bashing sessions with my SB. Here is my current setup:

ESC – Tekin G10 Pro +
DX3 Specktrum Radio System
Hitec 945MG
Orion V2 9 turn single
Stock battery and motor configuration
Fusion Tires with Losi Firm Foams
Modded center Steering link for maximum throw
Teflon #3 piston front, #4 rear
30W AE oil front and rear
Front shock tower stock location, Rear 1 in from outer most location
Front A arm stock location, Rear A arm outer location
Stock Springs
Front and Rear Arms level
Gearing: 80T / 16T

With this setup for bashing the vehicle had great off to mid power steering full power had some 4wd push. The thing I really noticed that I liked was that the rear off of jumps and bumps would not bottom out like my SB V1 Sport or Pro would do. Initial Battery pack run had some diff chirping issues, retightening seemed to clear that up but will watch this area.

Jumping consisted of repeated hitting those black BMX jumps you can purchase at Toys R us, I believe about 1 – 1.5 feet at the highest point. Similar to the jumps I have used before when running indoors on carpet over jumps. The V2 sailed true and was easy to correct in mid flight, better than my V1 Sport or Pro in fact.

The stiffeness of the suspension parts compared to the V1 displayed itself well during various types of turns with diffent levels of power, the vehicle felt more direct than the similar plastic V1 Sport. I am very interested in trying the vehicle on the track to see how well it steers and handles the chassis flex. The flex on the local tracks may not be an issue. On high traction surfaces however you will want to op for graphite components I believe.

The steering and droop mods appear to have held up well and I would recommend trying them. For durability, the vehicle did quite well, I hit a tree at about mid power and it can away unscathed. I also took a few jumps wrong, which made the local kids excited from the flips the buggy did and it came away again in one piece with little road rash.

I hope to stop by the track this weekend and get some laps in. Most likely trying out the Fusions first but going to holeshots I believe will be the best bet. If things are fluffier than I anticipate I will go with Losi IFMAR Studs .

Some issues I need addressed separately will be that every so often my setup would either catch a glitch on full power starts or when the power started to go down, it would either have full power to the servo or full power to the motor. Also, I am not sure of gearing yet, but venting may need to be done. I’ll see about setting up the vehicle without the undertray and see how it goes for heat.

< Message edited by Cainlord -- 6/2/2006 4:20:56 PM >

(in reply to AEoffroader)
       Post #: 8

RE: MRC / Academy SB V2 Thread - 6/14/2006 2:19:23 AM   
*Nitstklr72*



Posts: 1763
Joined: 3/12/2006
From: Asheville, NC, USA
Status: offline 		is this buggy durable i whant to get a buggy to play with and race

_____________________________

http://www.freewebs.com/nitstklr72/index.htm
My cars : mini t, mini lst, and a micro street force

(in reply to Cainlord)
       Post #: 9

RE: MRC / Academy SB V2 Thread - 6/14/2006 3:27:03 AM   
AEoffroader


 

Posts: 15
Joined: 10/8/2005
From: South Lyon, MI, USA
Status: offline 		The SB V2 is incredibly durable on 4wd standards. The original sb sport was about the same as other 4wd's durability. I have marshalled many 4wd qualifiers and watched 6 out of the 10 buggies go down (mostly losi's and the occasional lazer zx-5). I raced a whole series (6 saturdays) and only broke one front arm and a front hub carrier.

(in reply to *Nitstklr72*)
       Post #: 10

RE: MRC / Academy SB V2 Thread - 6/14/2006 4:04:41 AM   
Cainlord


 

Posts: 164
Joined: 1/11/2006
From: , ND, USA
Status: offline 		I would say the SB V2 is as durable as the last buggy suspension parts wise which is saying alot as the SB Sport parts were more flexible so they would most likely strip out instead of breaking in alot of instances. I would recommend the SB V2 as long as you do some of the mods stated here. Drop me an email as I have some info for your purchase.

(in reply to AEoffroader)
       Post #: 11

RE: MRC / Academy SB V2 Thread - 7/14/2006 2:51:43 PM   
*Nitstklr72*



Posts: 1763
Joined: 3/12/2006
From: Asheville, NC, USA
Status: offline 		what is the info and what mods are needed and when i race im going to need a lot of torque i race on a small track i would mostly be bashing

_____________________________

http://www.freewebs.com/nitstklr72/index.htm
My cars : mini t, mini lst, and a micro street force

(in reply to Cainlord)
       Post #: 12

RE: MRC / Academy SB V2 Thread - 7/14/2006 3:12:06 PM   
Cainlord


 

Posts: 164
Joined: 1/11/2006
From: , ND, USA
Status: offline 		I always liked to have a 19 turn motor in my aresonal as a short track motor. I really liked the Reedy Quad Mag, but the Orion Element (non V2 version) made great torque too. You could also try a 14 turn Trinity Cobalt 1 or 2.

For mods on the V2, the main thing you will want is to due the center steering link mod (basically go to a ball cup and turnbuckle setup so you can increase your steering range), use B4 diff springs in the diffs, and put o-rings into the rear axles to space the dog bones into the diff cups more on the rear (1 oring per axle is what I used). That should get you started. You will probably also want to go to better shocks, AE shocks or Academys will work fine. Also AE springs work great on the buggy.

Finally, I prefer the Teflon coated pistons, #3 front and #4 rears.

If you are in the need of some new rims and tires (I have Ifmar studs and Proline holeshots mounted, NEW) let me know.

(in reply to *Nitstklr72*)
       Post #: 13

RE: MRC / Academy SB V2 Thread - 7/24/2006 7:00:05 PM   
*Nitstklr72*



Posts: 1763
Joined: 3/12/2006
From: Asheville, NC, USA
Status: offline 		can this buggy handle a bl system with lipo or will i wrek the trany lmk

_____________________________

http://www.freewebs.com/nitstklr72/index.htm
My cars : mini t, mini lst, and a micro street force

(in reply to Cainlord)