HPI R40 Nitro Car Forum
10-18-2004, 12:27 PM
#4008
Originally posted by HarKonnenD
I'm running the MT12 w/ SG crank slide carb. How far down should I crank it? Also, should I just bag a Mugen spring instead? I'd really like to drive the car again.
I'm running the MT12 w/ SG crank slide carb. How far down should I crank it? Also, should I just bag a Mugen spring instead? I'd really like to drive the car again.
10-19-2004, 09:02 PM
#4009
I finally got it working now. The car really revs in my hand. Amazing punch offline. Took a little while to get the MT12 going because it hasn't been driven in a while. Had the gunk and MMO to get fully cleaned out before it allowed me to let it rev high. I used a TINY amount of CA glue on the first pinion because it came off no matter how tight it was. I'm running Odonnel fuel in the car now instead of Blue Thunder. I don't remember if my Mugen ran this strong, but its sick. 
10-20-2004, 09:13 AM
#4010
Hey guys, its been a while since I've been to the thread.
I stripped my rear layshaft pulley in my last race of the season, leaving me with only front wheel drive. Now, I came from running a Reflex last year which had all alloy pulleys, so this is new stuff for me.
Has anyone else had a problem with this? My rear belt was about 4 races old, so it wasn't too loose.
I just want to know if this is a consistent problem, cause if it is, I'll go alloy for that one pulley and suck up the weight addition.
Just in case, does anyone know of a company that makes an alloy replacement for that pulley?
I stripped my rear layshaft pulley in my last race of the season, leaving me with only front wheel drive. Now, I came from running a Reflex last year which had all alloy pulleys, so this is new stuff for me.
Has anyone else had a problem with this? My rear belt was about 4 races old, so it wasn't too loose.
I just want to know if this is a consistent problem, cause if it is, I'll go alloy for that one pulley and suck up the weight addition.
Just in case, does anyone know of a company that makes an alloy replacement for that pulley?
10-20-2004, 09:26 AM
#4011
I did it once. I attributed it to the fact that I had run the pulley all season and the fact that I had to bump the car off the board b/c a few times when the car was turned the wrong way and I wasn't patient enough to wait for a marshall, after that one incident I didn't have a problem. 3 racing makes an aluminum one with brake pins integrated into it though.
10-21-2004, 12:42 PM
#4012
Hmmm....I did have a couple of incidents when some poor souls found themselves being T-boned on the straight. Those sudden impacts could have caused the damage.
I think I will try to replace it with another plastic one first. Then if it happens again, I'll try the alloy replacement.
Thanks
I think I will try to replace it with another plastic one first. Then if it happens again, I'll try the alloy replacement.
Thanks
10-27-2004, 05:13 PM
#4013
This thread fell off the front page, so I thought I'd post my race results from Sunday.
I have 2 r40'2, one for my son an one for me. Mine has the lightened parts on it and my son's is stock. We were running stock gearing at a concrete parking lot race. Started off using foams, but it was like ice. Switched to Sorex 36r and traction was better.
Setup was:
front
1/2 degree toe out, 4.5mm ride ht, 2 degrees camber, black springs, 50 wt shock oil.
rear
2.5 degree toe in, 3 degrees camber, black springs, 5.5mm ride ht
My son ran 2 good qualifiers placing 2nd for the main and struggled a bit in the main.
I didn't do so well. 1st qualifier I flamed out. I've been using a RB v.12 with the HPI fuel and can't get it running correctly. Before the next heat, the raffle starts and I win a bottle of fuel. I remembered what Fastharry posted about RB's and Nova's not liking Wildcat fuels so I switched.
2nd qualifier, new fuel, retuned engine, and I get rammed from behind in the first turn. After that the car doesn't handle properly. The hit took off the lower spring retainer on the right rear shock. Limped through the race and ran out of fuel with 20 seconds left. Should have topped off after the start delay.
10 Min. main. 9th place start, I hang back and the front of the pack tangle in the first turn. As I scoot by, one of the leaders gets his car turned around, punches it and promply punts me into the second turn. Turn marshal get my car off the boards and I continue in last place. 3 laps later I start over driving and I ride the boards hard popping off the left steering knuckle and snapping the dogbone. I pull the car off, replace the dogbone, pop the knuckle back on and start racing again. 2 minutes later I run out of fuel comming on to the straight. The extra boost puts me into the boards and the knuckle pops off again. At this point, there's only 20 second left, so I pack it in.
Overall, I was really happy with the setup and performance of the cars. This was my first race since picking them up. My driving though leaves a lot to be desired.
My son won a Tamiya rtr and we also got a bunch of the Orion decals that go inside the body before you paint.
We had a great time though, frustrations and all. Next time will be better.
I have 2 r40'2, one for my son an one for me. Mine has the lightened parts on it and my son's is stock. We were running stock gearing at a concrete parking lot race. Started off using foams, but it was like ice. Switched to Sorex 36r and traction was better.
Setup was:
front
1/2 degree toe out, 4.5mm ride ht, 2 degrees camber, black springs, 50 wt shock oil.
rear
2.5 degree toe in, 3 degrees camber, black springs, 5.5mm ride ht
My son ran 2 good qualifiers placing 2nd for the main and struggled a bit in the main.
I didn't do so well. 1st qualifier I flamed out. I've been using a RB v.12 with the HPI fuel and can't get it running correctly. Before the next heat, the raffle starts and I win a bottle of fuel. I remembered what Fastharry posted about RB's and Nova's not liking Wildcat fuels so I switched.
2nd qualifier, new fuel, retuned engine, and I get rammed from behind in the first turn. After that the car doesn't handle properly. The hit took off the lower spring retainer on the right rear shock. Limped through the race and ran out of fuel with 20 seconds left. Should have topped off after the start delay.
10 Min. main. 9th place start, I hang back and the front of the pack tangle in the first turn. As I scoot by, one of the leaders gets his car turned around, punches it and promply punts me into the second turn. Turn marshal get my car off the boards and I continue in last place. 3 laps later I start over driving and I ride the boards hard popping off the left steering knuckle and snapping the dogbone. I pull the car off, replace the dogbone, pop the knuckle back on and start racing again. 2 minutes later I run out of fuel comming on to the straight. The extra boost puts me into the boards and the knuckle pops off again. At this point, there's only 20 second left, so I pack it in.
Overall, I was really happy with the setup and performance of the cars. This was my first race since picking them up. My driving though leaves a lot to be desired.
My son won a Tamiya rtr and we also got a bunch of the Orion decals that go inside the body before you paint.
We had a great time though, frustrations and all. Next time will be better.
10-27-2004, 05:43 PM
#4014
Tech Elite
iTrader: (4)
Join Date: Sep 2001
Location: Louisville, KY!.. USA!! ....Home of http://www.fastharry.com
Posts: 2,847
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I remembered what Fastharry posted about RB's and Nova's not liking Wildcat fuels so I switched.
10-27-2004, 05:55 PM
#4015
Originally posted by Rapid Roy
This thread fell off the front page, so I thought I'd post my race results from Sunday.
I have 2 r40'2, one for my son an one for me. Mine has the lightened parts on it and my son's is stock. We were running stock gearing at a concrete parking lot race. Started off using foams, but it was like ice. Switched to Sorex 36r and traction was better.
Setup was:
front
1/2 degree toe out, 4.5mm ride ht, 2 degrees camber, black springs, 50 wt shock oil.
rear
2.5 degree toe in, 3 degrees camber, black springs, 5.5mm ride ht
My son ran 2 good qualifiers placing 2nd for the main and struggled a bit in the main.
I didn't do so well. 1st qualifier I flamed out. I've been using a RB v.12 with the HPI fuel and can't get it running correctly. Before the next heat, the raffle starts and I win a bottle of fuel. I remembered what Fastharry posted about RB's and Nova's not liking Wildcat fuels so I switched.
2nd qualifier, new fuel, retuned engine, and I get rammed from behind in the first turn. After that the car doesn't handle properly. The hit took off the lower spring retainer on the right rear shock. Limped through the race and ran out of fuel with 20 seconds left. Should have topped off after the start delay.
10 Min. main. 9th place start, I hang back and the front of the pack tangle in the first turn. As I scoot by, one of the leaders gets his car turned around, punches it and promply punts me into the second turn. Turn marshal get my car off the boards and I continue in last place. 3 laps later I start over driving and I ride the boards hard popping off the left steering knuckle and snapping the dogbone. I pull the car off, replace the dogbone, pop the knuckle back on and start racing again. 2 minutes later I run out of fuel comming on to the straight. The extra boost puts me into the boards and the knuckle pops off again. At this point, there's only 20 second left, so I pack it in.
Overall, I was really happy with the setup and performance of the cars. This was my first race since picking them up. My driving though leaves a lot to be desired.
My son won a Tamiya rtr and we also got a bunch of the Orion decals that go inside the body before you paint.
We had a great time though, frustrations and all. Next time will be better.
This thread fell off the front page, so I thought I'd post my race results from Sunday.
I have 2 r40'2, one for my son an one for me. Mine has the lightened parts on it and my son's is stock. We were running stock gearing at a concrete parking lot race. Started off using foams, but it was like ice. Switched to Sorex 36r and traction was better.
Setup was:
front
1/2 degree toe out, 4.5mm ride ht, 2 degrees camber, black springs, 50 wt shock oil.
rear
2.5 degree toe in, 3 degrees camber, black springs, 5.5mm ride ht
My son ran 2 good qualifiers placing 2nd for the main and struggled a bit in the main.
I didn't do so well. 1st qualifier I flamed out. I've been using a RB v.12 with the HPI fuel and can't get it running correctly. Before the next heat, the raffle starts and I win a bottle of fuel. I remembered what Fastharry posted about RB's and Nova's not liking Wildcat fuels so I switched.
2nd qualifier, new fuel, retuned engine, and I get rammed from behind in the first turn. After that the car doesn't handle properly. The hit took off the lower spring retainer on the right rear shock. Limped through the race and ran out of fuel with 20 seconds left. Should have topped off after the start delay.
10 Min. main. 9th place start, I hang back and the front of the pack tangle in the first turn. As I scoot by, one of the leaders gets his car turned around, punches it and promply punts me into the second turn. Turn marshal get my car off the boards and I continue in last place. 3 laps later I start over driving and I ride the boards hard popping off the left steering knuckle and snapping the dogbone. I pull the car off, replace the dogbone, pop the knuckle back on and start racing again. 2 minutes later I run out of fuel comming on to the straight. The extra boost puts me into the boards and the knuckle pops off again. At this point, there's only 20 second left, so I pack it in.
Overall, I was really happy with the setup and performance of the cars. This was my first race since picking them up. My driving though leaves a lot to be desired.
My son won a Tamiya rtr and we also got a bunch of the Orion decals that go inside the body before you paint.
We had a great time though, frustrations and all. Next time will be better.
10-28-2004, 10:41 AM
#4016
Jag,
Thanks for the info. We only race on the concrete once or twice a year at one of the Hobby People races. The rest of the time we run on medium traction asphalt and use foam tires.
The rear traction was very good. The cars were planted and felt very stable. At first I wasn't getting enough steering because I was previously driving a 705 with a one way. After adjusting my driving style, I had plenty of steering. Agan, the back end was planted. The track was pretty small. Only 1/2 second worth of 2nd geer on the straight. I ended adjusting my 2 speed for 1st only because there was a slight bump in the straight where the car wanted to shift. It was more stable that way
So far, I really like the cars. Especially the cost of parts. $9.00 knuckle set, and $7.50 for dogbones. My last race with my 705 cost me $75 to fix. It was getting too expensive with the way i drive.
Thanks for the info. We only race on the concrete once or twice a year at one of the Hobby People races. The rest of the time we run on medium traction asphalt and use foam tires.
The rear traction was very good. The cars were planted and felt very stable. At first I wasn't getting enough steering because I was previously driving a 705 with a one way. After adjusting my driving style, I had plenty of steering. Agan, the back end was planted. The track was pretty small. Only 1/2 second worth of 2nd geer on the straight. I ended adjusting my 2 speed for 1st only because there was a slight bump in the straight where the car wanted to shift. It was more stable that way
So far, I really like the cars. Especially the cost of parts. $9.00 knuckle set, and $7.50 for dogbones. My last race with my 705 cost me $75 to fix. It was getting too expensive with the way i drive.
10-29-2004, 01:42 AM
#4017
Tech Initiate
Top speed of R40
Hi Guys
Recently i bought the R40 -2004 edition from Tokyo for around USD350. I just wonder what is the top speed for the R40 model in comparison to 1/8 Serpent 950R? I was told the R40 can reach a top speed of 120km/h.
Also have you guys used RDl .12 Katana 5port turbo engine on this model?
Cheers
Recently i bought the R40 -2004 edition from Tokyo for around USD350. I just wonder what is the top speed for the R40 model in comparison to 1/8 Serpent 950R? I was told the R40 can reach a top speed of 120km/h.
Also have you guys used RDl .12 Katana 5port turbo engine on this model?
Cheers
10-29-2004, 07:30 AM
#4018
I posted earlier and some people wanted to see the actual shirt before they placed an order so here's the pic.
'hpi racer' ninja
http://home.comcast.net/~anthony.isl...er_shirt_2.jpg
A bunch of the HPI Pro4, Savage, ect guys have bought them and I'll do a second run if enough people are interetested....email me if you are at [email protected]
http://www.rctech.net/forum/showthre...threadid=51915
'hpi racer' ninja
http://home.comcast.net/~anthony.isl...er_shirt_2.jpg
A bunch of the HPI Pro4, Savage, ect guys have bought them and I'll do a second run if enough people are interetested....email me if you are at [email protected]
http://www.rctech.net/forum/showthre...threadid=51915
10-31-2004, 08:01 AM
#4019
Question about the engine..
Hpi Advertises the R40 as a rolling chassis....Where can I get and which parts are they to make them run. Like the R40 Engine, R40 Pipe and header, etc etc.........I have the rs4 3 and well I would like to build my own but I want it to faster than my Rs43. Can you all help me with location and prices?
11-01-2004, 03:43 AM
#4020
diff oil leak
Help, my diff oil keeps leaking through the diff o-ring, its an R40. Is it alright if I use grease instead of diff oil so that it wont leak out? My LHS has no diff o-rings available and also said it still will leak even if I replace with new ones.. How will it affect the car's handling?
thanks...
thanks...