syndr0me

iTrader: (32)

I like the split blocks in the front, but they're harder to shim up if you want to raise them. Hopefully Tamiya will release some of the shims for those like they have with the longer blocks. As for C/C or D/D, that's up to you. That's one of the things people commonly change on the front of the car to make it more aggressive. It might be worth having both, but if you pick only one, I'd go with D/D, as the other can be very aggressive.

The Kimbrough servo saver will last forever, but I think it's a little soft and less direct feeling. The Tamiya saver with the alum horn has a nice direct feel, but you'll stretch them out every now and then and need to replace the plastic portion ($5). If the car feels like it won't center, it's probably time to change the saver. I just test it by trying to turn the wheels with the radio on (so the servo holds position) and looking to see if there's any play. If it "clicks" from side to side, it's time to replace.

sidecarphil1

iTrader: (1)

Tamiya have

White = Extra hard
Blue = Hard
Yellow= Medium
red = Soft

but the HPi springs are
between White and blue = gold
Between Blue and Yellow = silver

i find the HPi springs give better car control on Asphat then the Tamiya springs but on carpet they are too agressave and the tamiya springs are better

yokemad

Thanx Mate
so should I shim them up with 3mm like the one piece blocks?

syndr0me

iTrader: (32)

Nope, the shims are only because that block is flipped (to clear the belt). With the 2pc blocks, there's no need to flip them.

SammyZ

iTrader: (138)

i use corally black springs

reenmachine

iTrader: (26)

Same question from me. I tweaked the front rear block (if that's the right way to describe the rear block in the front suspension) pretty much right away.

SammyZ

iTrader: (138)

you must be hitting soooo hard

sidecarphil1

iTrader: (1)

i bent 2 of them in 6 months racing indoor

bought the split blocks as soon as they came out and all ok for the last 3 months

big + from me on the hop up to buy

reenmachine

iTrader: (26)

Not particularly. I haven't even broken or bent an aluminum turnbuckle but that suspension block deformed. Maybe I'm just lucky.

Stein Tumert

Various combinations of the HPI springs on asphalt.
Blue (r) - Silver (f) or Silver - Silver or Silver - Gold

...

veecee

iTrader: (34)

If u bent your FR blocks, you may as well replace with split block. They are rock solid. Get both C & D so you have tuning options.

Regarding HPI springs, I would add Pinks to Stein's list. They are between gold and silver in spring rate.

dsrbltoys

iTrader: (1)

Yokomo
Spring Rating [lb/in]
Orange 18.87
Green 16.06
Pink 14.93
Yellow 14.71
White 12.94
Blue 12.12

Rayspeed
Spring Rating [lb/in]
Gray 19.90
Red 18.26
White 17.17
Yellow 14.87
Blue 14.29
Green 13.20

Associated
Spring Rating [lb/in]
White 40.00
Yellow 31.91
Purple 30.30
Copper 23.26
Red 23.08
Gold 18.35
Blue 16.53
Silver 13.89
Green 11.43

Tamiya
Spring Rating [lb/in]
Purple 22.72
Gray 20.91
White Short 17.24
Blue Short 15.27
White 14.82
Blue 14.08
Yellow 13.33
Red Short 13.24
Yellow Short 12.90
Red 11.86

Courtesy of awsome stud - Ling Kang Tong, Mechanical Engineer
ALZA Macroflux Development

Circa 2005 and a quick search button

dsrbltoys

iTrader: (1)

Yokomo
Spring Rating [lb/in]
Orange 18.87
Green 16.06
Pink 14.93
Yellow 14.71
White 12.94
Blue 12.12

Rayspeed
Spring Rating [lb/in]
Gray 19.90
Red 18.26
White 17.17
Yellow 14.87
Blue 14.29
Green 13.20

Associated
Spring Rating [lb/in]
White 40.00
Yellow 31.91
Purple 30.30
Copper 23.26
Red 23.08
Gold 18.35
Blue 16.53
Silver 13.89
Green 11.43

Tamiya
Spring Rating [lb/in]
Purple 22.72
Gray 20.91
White Short 17.24
Blue Short 15.27
White 14.82
Blue 14.08
Yellow 13.33
Red Short 13.24
Yellow Short 12.90
Red 11.86

Courtesy of awesome stud - Ling Kang Tong, Mechanical Engineer
ALZA Macroflux Development

Circa 2005 and a quick search button

yokemad

hi guys
would you recommend me to use 44 or 46 steel driveshafts with spool ? I've got both at the moment ...
also has anybody tried TIR racing front spool?
cheers

sidecarphil1

iTrader: (1)

i used 44's all summer long outside with no problems

then i went indoors and at tthe first race meeting i broke 3 spool outdrives before i realised i needed 46's

i will always use 46's now but i feel that sometimes on full lock they tend to tie the car up , i am now using 1C 1C front not 1D 1D i was using so maybe i will be ok with 44's