Hpi Pro 4

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  • can anyone post the part number for the rear hubs... thanks
  • It comes in a pack with a rear hub and a front knuckle. The PN is 73507.
    -Josh
  • Thanks
  • Just had a play with soem old pro4 shocks and some old xray adjustable pistons and shafts, they fit and you still get heaps of down travel. I am going to use xray orings and make up some special spacers to go in the end of the shock body to seal it as the xray shafts are bigger. Internally adjustable pistons hooray. Once I work out what size to make the spacers I will post the dimensions as this would be a worthwhile mod to do to any car.
  • Quote: Come on floodo1, you of all people should know, it's all about the bling bling. And possibly more freespin from the precise bearings alignment.

    hahah

    yeah actually i had to sand my graphite bulkheads to get everything to align right

    just saying that AL is heavier than graphite, so what you may gain in drivetrain and bling you will prolly lose in handling.

    actually nowadays bling isnt where its at for me, lowest possible cg IS where its at
    then again i gaurantee my wiring is cleaner than anyones!!! maybe i should take pics to backup my claim eh?
  • floodo1..Went 27 last night on rubber tires.. The Pro4 FLAT laid it down..This car is HOOKED UP..many thanks for showing me the light.. I went a lap up on them in the main,every one was running foams except chuck.You coming down tomorrow..??
  • Quote: then again i gaurantee my wiring is cleaner than anyones!!! maybe i should take pics to backup my claim eh?
    Yes, please do!!
  • Quote: floodo1..Went 27 last night on rubber tires.. The Pro4 FLAT laid it down..This car is HOOKED UP..many thanks for showing me the light.. I went a lap up on them in the main,every one was running foams except chuck.You coming down tomorrow..??
    no working on oval for the practice, and getting new cvd bones guess im gonna have to go tc3 shiny or something cuz my hpi alum wear out WAY WAY too quickly, esp at 20 per pair im not really concerned about it tho, i switched to composite in the back so that might offset the steel weight.

    27 nice man

    prolly this coming friday i'll be there.

    and yeah i'll take pics soon prolly tomorow
  • Yeah. I'd like to see a really clean wiring job, mine alway look like dung.
    To me, it's the uglyest thing on an RC car!
  • Can anybody tell me what the final drive ratio is??
  • John:

    You can pay me Sunday. yes I'm finally going to get out again (let's how long I pass out this time) see you at HSC.
    got two cars to setup and one to start prototyping for carpet. so I might be a little busy.

    Thanks
  • Pro4 did me well today. I ran stock with some very stiff competition. Top 5 guys qualified within about 5 seconds from each other. TQ was only 3 tenths faster than 5th for the fast lap. My car was strong in the main, I qualified 3rd and took over 2nd after 2 laps. Then gained a tenth here and a tenth there all race. I finally caught up to the rear bumper on the final lap and ended up .149 back.

    I ran the stock setup with 3mm droop f/r, front spool, RP 30s, no swaybars, upperdeck mod, and removed centerbearing. RCProfessor batts, and HighVelocity motors. I'll work on setup next week.

    I've got a big race next week. I'm hoping that the Pro4 can come through and put me on the podium
  • Quote: Pro4 did me well today. I ran stock with some very stiff competition. Top 5 guys qualified within about 5 seconds from each other. TQ was only 3 tenths faster than 5th for the fast lap. My car was strong in the main, I qualified 3rd and took over 2nd after 2 laps. Then gained a tenth here and a tenth there all race. I finally caught up to the rear bumper on the final lap and ended up .149 back.

    I ran the stock setup with 3mm droop f/r, front spool, RP 30s, no swaybars, upperdeck mod, and removed centerbearing. RCProfessor batts, and HighVelocity motors. I'll work on setup next week.

    I've got a big race next week. I'm hoping that the Pro4 can come through and put me on the podium
    what surface?
  • HARA PRO4
    Have you guys read the latest issue of Xtreme RC? Oct. '05 issue
    they have a review of the Hara Pro4.
    very favorable review.

    Acceleration and Speed: 10/10
    Braking: 9
    Low-speed handling: 10
    High-speed handling: 9
    Maintenance: 9
    Wear and tear: 10
    Tuning: 10

    Scorecard:
    Instructions: 10
    Parts Quality: 10
    Durability: 10
    Tunability: 10
    Overal performance: 9.5
    Value: 9

    +Hits:
    *includes more option parts than anything else out there
    *High-quality parts throughout
    *The pinnacle of shaft-drive touring car technology
    *Overall presentation is excellent

    -Misses:
    *Price tag kind of hurts, and that's about it.
  • Quote: *The pinnacle of shaft-drive touring car technology
    Didn't see that one coming...
    -Josh