HPI R40 Nitro Car Forum
#3961
Tech Apprentice
iTrader: (1)
Originally posted by JAG Racing
I missed this thread... can you paste the URL for us?
I missed this thread... can you paste the URL for us?
Originally posted by Thad Garner
The 72210 piston profile provides slightly better dampening. The grey kit pistons have rounded sides the accelerates the oil around the sides of the piston rather then 100% thru the holes. Because the 72210 pistons are machined they are super precise. The flat sides and tight fit make for improved dampening.
The 72210 piston profile provides slightly better dampening. The grey kit pistons have rounded sides the accelerates the oil around the sides of the piston rather then 100% thru the holes. Because the 72210 pistons are machined they are super precise. The flat sides and tight fit make for improved dampening.
#3962
Tech Apprentice
iTrader: (1)
Re: Re: Re: R40 - Weight Reduction Question
Originally posted by AMGRacer
Yep this is the same reading that I got for my HPI light chassis. If you get all the 2004 hopups you should see around 1725g ready to run
Yep this is the same reading that I got for my HPI light chassis. If you get all the 2004 hopups you should see around 1725g ready to run
I'll have to wait till Monday to give it a run as the State Electric Titles are on down at the track this week end. I might slip down there tomorrow for the finals anyway and grab a few pics Bound to be plenty of hot shells in the line up.
Last edited by BF; 10-02-2004 at 09:04 AM.
#3964
Re: Re: Re: Re: R40 - Weight Reduction Question
Originally posted by BF
I'm at 1790g just now and have finally removed all the tweak from the car by replacing the rear bulkhead At least I think that's what fixed it.
I'll have to wait till Monday to give it a run as the State Electric Titles are on down at the track this week end. I might slip down there tomorrow for the finals anyway and grab a few pics Bound to be plenty of hot shells in the line up.
I'm at 1790g just now and have finally removed all the tweak from the car by replacing the rear bulkhead At least I think that's what fixed it.
I'll have to wait till Monday to give it a run as the State Electric Titles are on down at the track this week end. I might slip down there tomorrow for the finals anyway and grab a few pics Bound to be plenty of hot shells in the line up.
#3965
Tech Champion
iTrader: (42)
I mainly follow the HPI Pro4 thread...but thought a few people here might be interested in this.
thanks..sorry to go into the nitro thread :P
http://www.rctech.net/forum/showthre...threadid=51915
thanks..sorry to go into the nitro thread :P
http://www.rctech.net/forum/showthre...threadid=51915
Last edited by Nexus; 10-06-2004 at 09:35 AM.
#3966
Re: Re: R40 Turnbuckle slipping?
Originally posted by AMGRacer
Yes this does happen, usually in a crash. It only happens very rarely on my car. I think if you have had it happen enough the ballcups will strip, try replacing them and see how that goes.
Yes this does happen, usually in a crash. It only happens very rarely on my car. I think if you have had it happen enough the ballcups will strip, try replacing them and see how that goes.
#3967
Re: Re: Re: R40 Turnbuckle slipping?
Originally posted by JAG Racing
Thanks AMG - Replacing the plastic ballcups took care of the problem.
Thanks AMG - Replacing the plastic ballcups took care of the problem.
#3968
Re: Re: Re: Re: R40 Turnbuckle slipping?
Originally posted by AMGRacer
I thought it should. but if you are chronically whacking the rear wheels into hard boards it will happen again Most of the tracks I run at are fairly easy on the car.
I thought it should. but if you are chronically whacking the rear wheels into hard boards it will happen again Most of the tracks I run at are fairly easy on the car.
Too bad 4mm reverse thread jam nuts are so hard to find. Ultimate soluton would be to use the stock turnbuckle ( as FastHarry stated ) along with some thin jam nuts.
If anyone has invested in the tooling costs( 4mm taps, std and rev thread ), maybe they can sell some pairs of jam nuts at a reasonable price??
#3969
Re: Re: Re: Re: Re: R40 Turnbuckle slipping?
Originally posted by JAG Racing
My R40 is hooked up REAL nice these days ( on concrete surface ) and I am actually running clean races so I think I'll be OK (famous last words right?). I did buy some additonal turnbuckle combinations that should bail me out of trouble in case I need them.
Too bad 4mm reverse thread jam nuts are so hard to find. Ultimate soluton would be to use the stock turnbuckle ( as FastHarry stated ) along with some thin jam nuts.
If anyone has invested in the tooling costs( 4mm taps, std and rev thread ), maybe they can sell some pairs of jam nuts at a reasonable price??
My R40 is hooked up REAL nice these days ( on concrete surface ) and I am actually running clean races so I think I'll be OK (famous last words right?). I did buy some additonal turnbuckle combinations that should bail me out of trouble in case I need them.
Too bad 4mm reverse thread jam nuts are so hard to find. Ultimate soluton would be to use the stock turnbuckle ( as FastHarry stated ) along with some thin jam nuts.
If anyone has invested in the tooling costs( 4mm taps, std and rev thread ), maybe they can sell some pairs of jam nuts at a reasonable price??
#3970
Re: Re: Re: Re: Re: Re: R40 Turnbuckle slipping?
Originally posted by AMGRacer
Interesting you run on concrete? Are you using foam or rubber on that surface?
Interesting you run on concrete? Are you using foam or rubber on that surface?
#3971
Tech Elite
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Join Date: Sep 2001
Location: Louisville, KY!.. USA!! ....Home of http://www.fastharry.com
Posts: 2,847
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Too bad 4mm reverse thread jam nuts are so hard to find. Ultimate soluton would be to use the stock turnbuckle ( as FastHarry stated ) along with some thin jam nuts.
just use those PRO LINE Tmaxx rod ends,and you won't have a problem........
#3973
Tech Apprentice
iTrader: (1)
Re: Re: Re: Re: Re: Re: R40 Turnbuckle slipping?
Originally posted by AMGRacer
Interesting you run on concrete? Are you using foam or rubber on that surface?
Interesting you run on concrete? Are you using foam or rubber on that surface?
#3974
Re: Re: Re: Re: Re: Re: Re: R40 Turnbuckle slipping?
Originally posted by BF
I note a couple of the regulars at Bayside are running 24mm sorex on 26mm rims with good results. With the weather nudging 30C, 40R will be working after mid morning.
I note a couple of the regulars at Bayside are running 24mm sorex on 26mm rims with good results. With the weather nudging 30C, 40R will be working after mid morning.
#3975
Tech Elite
iTrader: (23)
Weird how my foams that came with the R40 look like GRP foams. Anyway, I thought the manual wasn't as bad as I heard it was, and the car seems noticiably heavier that most cars, but I don't think its really a threat to my acceleration. Maybe this will even help me from spinning out a little, due the xtreme lightness of my NEO TNT. Anyone filled the rear diff on the stock R40 with any fluid? If so, which one? I'm running nothing there and the included 50,000k. Car runs really smooth. I like it a lot. Glad I didn't get the NTC3. No offense, but I like the looks of this car better. Will post a review of a test run sometime this week when I get time.