Diggity designs Xlr8 v1 User manual

STEP 1 1) Assemble the steering rack (#420-017) using tw 3mm x 20mm flat head stainless screws (#420-031), tw 3mm nuts (#420-039), tw

steering bushings (#420-024), tw 3mm washers (#420-037), and tw 3mm l ck nuts (#420-041). Y u will want t tighten the l ck nuts all the

way. Use the existing black ball ends fr m y ur TC3 r TC4 (#3858) and attach t the steering rack. NOTE: If the rack is binding make sure

the tw 3mm x 20mm flat head screws are n t ff center; y u can use Ass c (#3911) black shims t take any up and d wn play ut.

2) Assemble the fr nt differential h usings (#420-013) as sh wn. Y u will want t start with ne st ck Ass ciated diff shim (#3911) and ne

Diggity Designs diff shim (#420-036) n b th sides f the differential. Y u will make the pr per adjustments later if needed. Using f ur 4-40

x 1/4 flat head stainless screws (#420-427) secure the left and right side differential h usings. DO NOT FULLY TIGHTEN

STEP 1

UPDATE!!

Steering rack update! S me pe ple have had binding pr blems with their steering guide bushings. T take care f this pr blem the ne piece

brass steering guide bushings #420-024 are n w split in t tw parts making f ur brass steering guide bushings. This all ws f r the steering

guide bushings t m ve against each ther m re freely (if binding ccurs, use a little il r lube f r the first run t break the bushings in). We

n w use f ur #420-039 3mm hex nuts under the steering rack, this will raise y ur steering rack and get rid f bump steer.

STEP 2 1) Assemble the rear differential h usings (#420-013) as sh wn. Y u will want t start with ne st ck Ass ciated diff shim (#3911) and ne

Diggity Designs diff shim (#420-036) n b th sides f the differential. Y u will make the pr per adjustments later if needed. Using f ur 4-40 x

1/4 flat head stainless screws (#420-427) secure the left and right side differential h usings. DO NOT FULLY TIGHTEN .

2) Attach the m t r m unt (#420-010) t the chassis using tw 4-40 x 1/4 flat head stainless screws (#420-427) DO NOT FULLY TIGHTEN.

Attach the aluminum antenna m unt (#420-50) t the chassis using ne 4-40 x 1/4 flat head stainless screw (#420-427). There are f ur

m unting h les f r the antenna m unt depending n radi equipment l cati n.

STEP 3 1) Attach the fr nt inner pin bl cks (#420-019) using f ur 4-40 x 1/4 flat head stainless screws (#420-427) t secure them t the chassis DO

NOT FULLY TIGHTEN. NOTE: Y u will use tw 3mm x 8mm flat head stainless screws (#420-030) t attach the serv m unts.

2) Slide the st ck Ass ciated hinge pins (#3866) thr ugh the aluminum fr nt arms (#420-011). Y u will use ne brass swivel bushing(#420-

026) and ne brass washer (#420-062) n each end f the hinge pin as sh wn. Make sure the brass swivel bushings (#420-026) are n c rrectly

sh wn in the b x bel w NOTE: y u might need t press the bushings n using a light hammer. Slide the fr nt arms (#420-011) int the inner

hinge pin bl cks (#420-019) first and then finish the assembly by sliding the 0 degree pin bl ck (#420-020) nt the ther end f the hinge pins

and secure t the chassis using tw 4-40 x 1/4 flat head stainless screws (#420-427). DO NOT FULLY TIGHTEN

Brass Hinge Pin spacer washers! There will either be 8 thin brass spacer washers r 4 (white r black) delrin washers included in y ur kit. If

binding ccurs when using the delrin washers y u will need t sand them with sandpaper t thin them slightly, this will make sure the arms are

free fr m binding.

Delrin C ne Bushings! These are included f r quick replacements f the brass c ne bushings.

STEP 4 1) Attach the rear inner pin bl cks (#420-019) using f ur 4-40 x 1/4 flat head stainless screws (#420-427) t secure them t the chassis DO

NOT FULLY TIGHTEN.

2) Slide the st ck Ass ciated hinge pins (#3866) thr ugh the aluminum rear arms (#420-012). Y u will use ne brass swivel bushing (#420-

026) and ne brass washer (#420-062) n each end f the hinge pin as sh wn. Make sure the brass swivel bushings (#420-026) are n c rrectly

sh wn in the b x bel w NOTE: y u might need t press the bushings n using a light hammer. Slide the rear arms (#420-012) int the inner

hinge pin bl cks (#420-019) first and then finish the assembly by sliding the 1 r 2 degree pin bl ck (#420-021 r #420-022) nt the ther end

f the hinge pins and secure t the chassis using tw 4-40 x 1/4 flat head stainless screws (#420-427). DO NOT FULLY TIGHTEN

STEP 4

UPDATE!

OPTIONAL! Rear arms Reverse m unting! In the m st recent runnings f the XLR8 kits, racers running ind r n carpet prefer t run the

arms in reverse with the sh cks n the inside f the arms. This all ws f r faster transiti ning thr ugh tight and quick c rners. Make sure t

use a spacer n the t p sh ck m unting screw t slide the sh ck ut m re t level. (It will n t be level, it will angle back at the t p).

TC4 Fr nt Steering Bl cks and rear carriers: We have als n ticed in the m st recent runnings f the XLR8 that the TC4 fr nt steering bl cks

have an extra h le f r the steering ackermann and this new m unting l cati n w rks very well f r the XLR8. When running the rear arms in

reverse we like t use the TC4 rear hub carriers but y u will need t drill a h le f r a set screw like the TC3 nes. We als rec mmend trying

L si fr nt C-hubs and rear hub carriers. Aluminum C-hubs and steering bl cks give y u the m st s lid platf rm.

STEP 5 1) Slide the aluminum fr nt/rear shaft supp rt (#420-014) nt the drive shaft (#420-016) f ll wed by ne Ass ciated 3/16 x 3/8 bearing

(#6906), tw Ass ciated shims (#3911) n te: the tw shims are a starting p int and y u can adjust later if needed by taking away r adding

shims. Slide the Ass ciated pin (#3919) thr ugh the shaft h le. Finish sliding the Ass ciated drive pini n (#3914) nt the drive shaft and

secure with ne 4-40 x 3/16 butt n head stainless screw (#420-430). Use LIGHT thread l ck.

2) Attach the 3mm carb n fibre t p plate (#420-050) t the aluminum fr nt/rear shaft supp rt (#420-014) using tw 4-40 x 1/4 flat head

stainless screws (#420-427). NOTE: y u will have t finish the assembly f the drive shaft in Step 6 bef re y u can secure the t p plate t the

drive shaft unit! DO NOT TIGHTEN TILL LATER

STEP 6 1) Slide the aluminum middle shaft supp rt (#420-015) nt the drive shaft (#420-016) f ll wed by ne Ass ciated 3/16 x 3/8 bearing (#6906).

Slide the gear adapter (#420-018) and spur gear unit nt the drive shaft past the sec nd small h le, slide the sh rt Diggity Designs pin (#420-

061) thr ugh the drive shaft h le and push the gear adapter up t the pin and clip using the Ass ciated Large E clip (#3919). Slide the

aluminum fr nt/rear shaft supp rt (#420-014) nt the drive shaft (#420-016) f ll wed by ne Ass ciated 3/16 x 3/8 bearing (#6906), tw

Ass ciated shims (#3911) n te: the tw shims are a starting p int and y u can adjust later if needed by taking away r adding shims. Slide the

Ass ciated pin (#3919) thr ugh the first shaft h le. Finish sliding the Ass ciated drive pini n (#3914) nt the drive shaft and secure with ne

4-40 x 3/16 butt n head stainless screw (#420-430). Use LIGHT thread l ck.

2) Attach the 3mm carb n fibre t p plate (#420-050) t the aluminum fr nt/rear shaft supp rt (#420-014) using tw 4-40 x 1/4 flat head

stainless screw (#420-427) and t the aluminum middle shaft supp rt (#420-015) using ne 4-40 x 1/4 flat head stainless screw (#420-427).

DO NOT TIGHTEN TILL LATER

STEP 7 1) Attach the drive shaft assembly t the fr nt/rear right and left differential h usings (#420-013) by sliding tw 4-40 x 3/8 flat head stainless

screws (#420-028) thr ugh tw aluminum c untersunk washers (#420-032) and thr ugh the t p plate (#420-050) n each end. Slide ne 4/40 x

1/4 butt n head stainless screw (#420-431) thr ugh the t p plate and secure t the m t r m unt (#420-010). DO NOT FULLY TIGHTEN

2) Attach the drive shaft assembly t the chassis (#420-055) by using six 4-40 x 1/4 flat head stainless screws (#420-427) and securing them t

the aluminum fr nt/rear shaft supp rts (#420-014) and t the aluminum middle shaft supp rt (#420-015). MAKE SURE YOUR DRIVE LINE

DOES NOT BIND AT THIS TIME, IF IT IS TOO LOOSE THEN ADD A SHIM OR TWO WHERE NEEDED AND IF IT IS TOO TIGHT

THEN TAKE A SHIM OR TWO AWAY WHERE NEEDED AND THEN REPEAT STEP 7. M st shim adjustments will be in the differential

h usings, y u will want t shim it s that the drive pini n and diff gears are n t t l se because y u will strip the gears if its n t pr perly

adjusted. Once y u have a set shimming selecti n then y u will always use the same when rebuilding y ur car.

STEP 8 1) Slide ne Ass ciated 4-40 x 3/4 pan head screw (#7413) thr ugh the fr nt sh ck t wer (#420-053) and secure with an Ass ciated 4-40 mini

nut (#7260). Slide ne Ass ciated l ng black ball end (#3858) thr ugh the fr nt sh ck t wer and secure with an Ass ciated 4-40 mini l ck nut

(#4449). Attach the fr nt sh ck t wer (#420-053) using f ur 4-40 x 1/4 flat head stainless screws (#420-427). DO NOT FULLY TIGHTEN

2) Slide ne Ass ciated 4-40 x 3/4 pan head screw (#7413) thr ugh the rear sh ck t wer (#420-054) and secure with an Ass ciated 4-40 mini

nut (#7260). Slide ne Ass ciated l ng black ball end (#3858) thr ugh the rear sh ck t wer and secure with an Ass ciated 4-40 mini l ck nut

(#4449). Attach the rear sh ck t wer (#420-054) using f ur 4-40 x 1/4 flat head stainless screws (#420-427). DO NOT FULLY TIGHTEN

STEP 9 1) In this step y u will finally be tightening all the screws. The reas n behind this chart is s that y u will av id chassis tweak! After s me

racing and a few hard hits y u will always want t check y ur chassis tweak, just l sen the listed screws and refer t this chart t re-tighten

and re-set y ur tweak. Y u will want t tighten the screws n the b tt m f the chassis first in the c rrect rder and then lay the chassis n a

super flat surface and finish tightening the t p plate screws in the c rrect rder. DO NOT USE THREAD LOCK

2) Finish tightening the pin bl ck screws n the b tt m f the chassis after y u tighten the chassis and t p plate screws. Finish tightening the

screws n the sh ck t wers in the c rrect rder . DO NOT USE THREAD LOCK

STEP 10 1) Attach the f ur aluminum battery brace stand ffs (#420-058) t the main chassis using f ur 4-40 x 1/4 flat head stainless screws (#420-427).

Use thread l ck.

2) Secure the l ng battery brace (#420-056) t the aluminum battery brace stand ffs using tw 4-40 x 1/4 flat head stainless screws (#420-427).

Secure the sh rt battery brace (#420-057) t the aluminum stand ffs using tw 4-40 x 1/4 flat head stainless screws (#420-427). DO NOT USE

THREAD LOCK n the t p screws.

BATTERY BRACE TIP: If y ur battery brace straps are l se, y u will want t either tape r glue s me thin f am t cushi n the braces t the

batteries. This will all w y u t tighten the straps and h ld the batteries in better with ut them c ming l se!!

STEP 10

V2 LIPO

1) Attach the LIPO brace t the chassis (ch se which p siti n f the 3 y u want t use) using tw 4-40 screws, the included .060 aluminum

spacers and the tw included stand ffs as sh wn in the picture (spacers in between LIPO brace and main chassis). Attach the battery strap t

the stand ffs using tw 4-40 screws.

STEP 11 1) Install the milled bumper (#420-023) t the chassis (#420-055) using three 4-40 x 3/8 flat head stainless screws (#420-028), three 4-40 steel

washers (#420-438), and three 4-40 l ck nuts (#420-442). Make sure these are nice and snug. Install the tw Ass ciated fr nt b dy p sts

(#8818) using tw 4-40 x 1/2 butt n head stainless screws (#420-432)

2) Attach the tw Ass ciated rear b dy p sts (#8874) t the rear sh ck t wer (#420-054) using tw 4-40 x 3/8 flat head stainless screws (#420-

028). Y u will want t use a fr nt f am bumper, we rec mmend the P-Dub racing f am fr nt bumper.

STEP 12 1) Attach the rear hub carrier Ass ciated (#3876) r we rec mmend L si xxx-s 0 degree (#L sa9847) t the aluminum rear arm (#420-012)

using the Ass ciated hinge pin (#3866), and tw Ass ciated plastic washers (#4187). Secure with set crew n hub carrier. Attach the wheel

hexes. Install the 8-32 set screws (#420-059) t use f r dr p adjustment. NOTE: When using L si rear hub carriers y u will need t add ne

small g ld shim between the arm and hub carrier as sh wn.

2) Attach the Ass ciated 4 degree fr nt spindle and bl ck carriers (#3873) r we rec mmend L si xxx-s 4 degree fr nt spindles and bl ck

carriers (#L sa9757) t the aluminum fr nt arms (#420-011) using the Ass ciated hinge pin (#3866) and securing it with the set screw n the

carrier. Attach the wheel hexes. Install the 8-32 set screws (#420-059) t use f r dr p adjustment. NOTE: Use the 4-40 stainless nut (#420-

440) n the steering bl ck t reduce bump steer as sh wn.

STEP 13 1) Install the f ur threaded sh cks Ass ciated (#3963) r any c mparable threaded sh cks using ne Ass ciated (#6473) sh ck bushing and

ne 4-40 l ck nut (#420-442) n the t ps. Use ne 4-40 x 1/2 butt n head stainless screw (#420-432) n the b tt ms f the sh cks.

2) Install y ur serv as sh wn using the st ck Ass ciated serv m unts (#7336) and m unting hardware. Y u will need t use a L si serv

saver (#L sa1540 & L sa1542) r Kimbr ugh mid size serv saver. Make sure y u set the serv saver ffset t ab ut 7.5mm and then adjust

y ur radi and linkage t get pr per steering.

STEP 14 1) Install the steering, fr nt suspensi n, and rear suspensi n turnbuckles using the rec mmended starting lengths. Y u will adjust these later

t fine tune after final assembly.

2) Install y ur m t r using tw aluminum c untersunk washers (#420-032) and tw 3mm x 8mm stainless flat head screws (#420-030).

3) Set the batteries n the chassis and see which battery c nfigurati n will best suite y u. Running the wire n the inside requires a flat wire r

n dle wire s that it d es n t rub the drive shaft (this is the best way since the wires are sh rter). Make sure the wire will clear the t p plate.