regg151

I checked my build and the pulleys are all in the correct spots. I managed to find a tempoary solution by swaping out the rear belt and replacing it with one from the yokomo GT-4 it's a bit loose even after setting it up for maximum tension. but it did work very well and is holding up better then the stock belts.

also noticed that the spur gears are prone to chipping as well as the pinions

adlawoo

Same here....all were(pulleys) okey and on the right places...Thanks Sleepers for pointing that out! I guess it will surely be notice, if it's mistakenly (pulley) misplaced - front belt tension will be tight or vice versa....

I may try my Reflex front belt, but then it will be loose for sure(Reflex-67T/R40-64T)...will see and I'll just change the tension set-up probably will work like Regg's

InitialD

If you're looking for alternative belts, you can try Serpent's kevlar belts. The 705's front belt is 64T (192 mm). There is a 4 mm and a 5 mm option belt.

adlawoo

Thanks! Will try that...but my bad, I should have said it like this...the Reflex/Kyosho rear belt (192) & HPI A727 belt (189-63T)

BallPy

I already have about about 15 runs on my car which equals out to be about 20 or so tanks and I havent even chiped a gear or had any problems with my belts. I have been running on a parking lot track every weekend for the past 3 1/2 weeks. If you guys are running on parking lots make sure there isnt to much loss gravel or sand that could be causing this.

BallPy

I am having the same problem with my tensioner. What did you do to fix it?

HPIRACER310

take the tensioner off the the car.

easy fix. use some fine sand paper (preferably on a flat surface) to sand down the inside of the plastic washers (the sides that touch the bearings). you could sand the outside of the washer, just a matter of preference to reduce overall width.

hope this helps.

treky11

Hi Frank, here goes (see you in Vegas with my new car)

OK, almost done building my R40. Yes I bought one to race at the worlds. Will it replace my NTC3 as car of choice, don't know yet. It will have to show me a lot to make me leave the ease of working on a NTC3.


Anyway, here are the things I would like to see improved or corrected.

1. Metal shocks - a pro car shouldn't come with plastic shocks
2. Bearings for the steering. Bushings in a pro car
3. The front arms have front to back slop if they are installed with the spacers shown in the directions
4. The plastic looks different, but when you put a screw in it still feels like the old HPI plastic
5. Fix the directions.
6. Include all the setup/tuning guide info with the kit.
7. SPARE PARTS, SPARE PARTS, SPARE PARTS, where are they
8. There is extremely little room between the gas tank and the slide carb, seems like the tank could have about an 1/8 of an inch removed from the mold where it comes close to the slide carb to give a touch more room.
9. Urethane belts should be on a pro car
10. Too much slop in the steering, particularly in the area where the flanged bearings go into the swing rack. there is either wobble or binding if you tighten the screws all the way.
11. Stronger servo guard for the steering servo.
12. Fix the knuckles/uprights to be tighter where the alum cups screw in. They are way too loose.
13. The clutch is too tight even when shimmed correctly or not shimmed. and yes many have complained about this. The tolerances are off somewhere.
14. Include grease for the thrust bearing
15. Many kits have the 2x10 and 2x12 pins bagged with the wrong size or missing
16. Include graphite shock towers
17. Pre- thread the clutch shoes for the set screw
18.


Other general wishes

1. Bring the kit with the metal shocks/one-way to the US
2. Lightweight driveshafts
3. A bumper that floats like the one in the NTC3
4. Collars with set screws on the driveshafts rather than plastic spacers.
5. Include a set screw on the roll pins in the universals. Yes the bearing holds it in place but when you remove a wheel, the hex hub can come off, then the pin falls out, then the universal moves and next thing you know the pin falls out cause the bearing is stuck in the upright.
6. Heatsink/finned engine mounts
7. Include titanium turnbuckles in the kit.
8. If the stock shock towers have to be alum, at least make them purple
9. Have a mark on the plastic pulleys to show the number of teeth on the pulley itself
10. Metal pulleys included (and not the way too heavy steel ones that HPI made for the racer)
11. Come out with a full option kit near the same price
12.


Things I like.

1. The Rx box and the way it floats (although I want to know why Hara ran his car differently )
2. The gas tank on posts with clips, easy to remove !
3. The battery compartment/placement
4. The diffs are meaty
5. The downstops/up-travel being in the sway bar mount. AWESOME, now you don't loose your setup when you break an arm
6. The bearing capturing the pin in the universal
7. The rubber mounts for the front hingepins, provided they hold up.
8. The adjustable steering servo mount design
9.

I am sure there will be more. I'll update as they come to me. Overall a well designed kit. Now lets see how it performs.

:

popsracer

Guys;

Has anyone had the Chance to do a side by side comparison between the R40, V1-Evo and G4?

They all look very similar in design.

Just curious, Thank.

puma1824

I finished my kit but am having trouble with it free rolling. If I have the side belt off the car rolls free...with the belt on it doesn't really roll that free. Only thing I can compare it to is my MTX-3 which rolled free.

I checked the gears and I seem to have the correct ones installed.

18T front middle, 23T front side
19 rear middle and side.

Anyone have this problem?

Thanks,
Puma

Omar

iTrader: (15)

i just ran my r40 for the first time today. this car handles like a dream. it almost handles like my tc3 on carpet. i im ready for the big race in my town.

fastharry™

iTrader: (4)

Puma..

my car rolls fine.....with the side belt off,roll the rear and front side gears with your hands......something is binding front or back....you don't have the side belt tension too tigght,do ya?..


if you have the wrong pulleys,it will show up when you roll the car...Try rolling the front and rear wheels seperately on the table...I used that all the time on my racer2's when IO couldn't find that hidden rock..

HPIRACER310

Havent started her up yet, probly this weekend. still waiting on a steering servo to arrive in the mail.

What's a good starting point or neutral setting for droop?

I have Hpi threaded aluminum shocks on the car.
64.50 mm overall shock length, with the ride height set at 4mm front / 5mm rear.

fastharry™

iTrader: (4)

just so you guys are aware..

parts(all the main stuff like arms,belts,hinge pins etc) are in stock at tower...

alot of them are limited supply...

puma1824

With the side belt off or when I roll the rear and front side gears with my hands everything is smooth. If I take off the belt tensioner and only have the side belt on it's back to not rolling freely.

I triple checked the installed gears and everything seems to be correct.

I'm confused

-Puma