R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 12-25-2004, 10:10 PM   #5926
Tech Master
 
koabich's Avatar
 
Join Date: Oct 2003
Location: Detroit Area
Posts: 1,359
Send a message via Yahoo to koabich
Default

Quote:
Originally posted by KilRuf
Thanks Razzo, I'll have to try those out as well. I don't really care if I went through a set of tires each race day. $30bucks a weekend is no biggy for me. I'm just trying to get ready for the Snowbirds. So the fastest combo for 19t is what I'm looking for. I'll have to match my lap times with Parma Cyan/Magenta combo vs Jaco DoublePink/DPink-Orange... and see what I get. I could probably do that on NewYears.
Just remember, that compared to the Jaco, the inside diameter of the Parma wheel is really small...somewhere around 2mm smaller!! This will not (or at least shouldn't work) on a 415 with a stock suspension. I believe you would have to use the shorter kingpin that some guys are using to get the Parma's to work. For me this is not an option, as I do not want the roll center effects that using the shorter kingpin would have.
For the record, if anyone was wondering, I measured the inside diameter of several different manufactures of foam tires. The order from largest inside diameter to smallest of those i measured are:
-Jaco
-TRC (yellow dish wheel)
-TRC (new black spoked wheel)
-Parma

I was suprised to see that the new TRC wheel is not the same diameter as the old one.

I have been using Jaco for several years. I have never had any issues what so ever with them, I just wanted to try something new. But considering Jaco had the largest inside diameter I decidied to stick with them!
koabich is offline   Reply With Quote
Old 12-26-2004, 12:44 AM   #5927
Tech Regular
 
razzo's Avatar
 
Join Date: Aug 2001
Location: Crappy MN weather!
Posts: 426
Send a message via Yahoo to razzo
Default

okay... just took my digital caliper out and had to measure the rims. Having tried all 3 brands (TRC/Jaco/Parma) I don't get 'Parma is really small' thing... here's my readings, Parma/47.4mm, Jaco/47.8mm, TRC/45.8mm. These are ALL 28mm wide tires. Using inside ribs as center measuring point. Magenta for TRC/Parma, and Double Pink for Jaco. So there is 2mm difference between TRC and Jaco, but only about .5mm between Parma and Jaco. Also, for roll center, if you remove the 2mm shim from camber link mount on the graphite plate, it should lower it enough to not make much change with Evo4 king pins, compared to running 4mm (box setup) with original king pins. If you're leery of trying the Evo4 pins, Parma fits fiine with original king pin, with top of ball cup shaved.

Also, see attached picuture. Parma and Jaco have different off-sets too. With Parma, I can use 1mm wheel shim (red) with out having it rub the sway bars. With Jaco, I have to use 1.5mm shims (red+blue) to get it from rubbing the rear sway mount. These are 'latest' rims from both companies... 6 rib for Parma, and 8 rib 'new' Jaco rims.
Attached Images
File Type: jpg inside.jpg (32.3 KB, 173 views)
razzo is offline   Reply With Quote
Old 12-26-2004, 12:46 AM   #5928
Tech Regular
 
razzo's Avatar
 
Join Date: Aug 2001
Location: Crappy MN weather!
Posts: 426
Send a message via Yahoo to razzo
Default

another pic..

Parma on left, Jaco on right.
Noticist I didn't have to CA the edges on Parma so they won't seperate . This picture really shows the offset difference.
Attached Images
File Type: jpg outside.jpg (29.6 KB, 185 views)
razzo is offline   Reply With Quote
Old 12-26-2004, 02:34 AM   #5929
Tech Adept
 
Join Date: Aug 2001
Location: Minneapolis, MN
Posts: 215
Send a message via AIM to Dave Kurschner
Default koabich

The rollcenter settings on the car are based around 2.5" rubber tires. You can duplicate the rollcenter by adjusting the spacers on the inside of the camber link. You can also do it with adjusting the height of the hinge pin blocks.

I'm running the lowered king pin and its working just fine. In fact, just unscrew the stock one and screw the other one in. It will go about 1/8th of a turn from full tightening down. I was concerned that if I couldn't lock it down, that it would loosen from racing. I've had it in there for probably 5 weeks now with 2-3 nights of racing per week and they haven't budged at all.

tires - I think the Jaco's work just great. I start mine at about 59mm out of the box. The tires seem to be fastest between about 55.5mm and 58mm. If I start at 59mm for one race night, at the end of the night, I'll reshape them at about 57.5 to 58mm. So that's a solid 16 to 20 runs on dbl pinks. I just run the kit silver spacer on the wheel hex and I don't have any rubbing problems. The rear swaybar isn't an issue as most drivers would not choose to use a swaybar on a car running on foamies. With both cyan/mag. and dbl pink compounds (which are basically the same thing), there's a little more chance for the foam peeling because the foam is softer. It rolls over more on the track and pulls harder on the sidewall glue seem. A nice thick ring of CA will help with that, chunking, and most importantly, will make your car handle a bit more consistantly with the stiffer sidewall on the tires. I haven't purchased any Parmas but my initial take on them was a rim that was a bit flexier than the others.
Dave Kurschner is offline   Reply With Quote
Old 12-26-2004, 02:35 AM   #5930
Tech Elite
 
JimmyMac's Avatar
 
Join Date: Oct 2001
Location: NC
Posts: 4,443
Trader Rating: 2 (100%+)
Default

I have been using Parmas. I'm just switching to Jaco's so I can use Double Pink Combo. But Razzo was suggesting the Cyan and Magenta. So I'm gonna try that as well. Rubbing is no big deal for me. It's not like it can't be fixed or anything. My main concern with the foams was the compounds.

I also super glue the sidewalls as well.

If I were to say which was the best overall foams... I'd have to say BSR foam tires. But I have trouble getting them. So I have to resort to other brands.

Also, I got the same measurements as Razzo did. Jaco's are just a hair bigger. Just enough to barely run on the ball cups. Parmas just need a hair trimming down.

Either way... I'll be running whichever gives me the fastest lap times next weekend.
__________________
M.J. McIntyre

Yokomo YRX12
Tamiya TB03
JimmyMac is offline   Reply With Quote
Old 12-26-2004, 03:34 AM   #5931
Tech Regular
 
razzo's Avatar
 
Join Date: Aug 2001
Location: Crappy MN weather!
Posts: 426
Send a message via Yahoo to razzo
Default

Dave, you want to buy my Jaco sets out? I just re-loaded with Parma Cyan/Magentas. Last time we ran, I was on Parma Cyan/Magenta, not the usual Parma Plaid/Purple I've been using. Even with the softer foams, if it's glued well, it shouldn't peel! I was ready to go all Jacos, but after peeling ALL my sets, I'm done.
razzo is offline   Reply With Quote
Old 12-26-2004, 10:22 AM   #5932
Tech Addict
 
racer's Avatar
 
Join Date: Oct 2002
Location: ADVAN Le Mans Project
Posts: 707
Default

would the 'mod' setups that we see on the forum work with stock motors?

any help would be appreciated.

Thanks in advance!
racer is offline   Reply With Quote
Old 12-26-2004, 12:12 PM   #5933
Tech Prophet
 
Randy Caster's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2003
Location: Costa Mesa, CA
Posts: 16,675
Trader Rating: 46 (100%+)
Default

Quote:
Originally posted by racer
would the 'mod' setups that we see on the forum work with stock motors?

any help would be appreciated.

Thanks in advance!
As far as asphault setups go, they should be ok, but carpet will propably be far off. Usually mod setups will have a lot of steering because the motors dont have the drag brake like stock motors do, and they obviously go a little faster
Randy Caster is offline   Reply With Quote
Old 12-26-2004, 12:14 PM   #5934
Tech Prophet
 
Randy Caster's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2003
Location: Costa Mesa, CA
Posts: 16,675
Trader Rating: 46 (100%+)
Default

Quote:
Originally posted by razzo
Dave, you want to buy my Jaco sets out? I just re-loaded with Parma Cyan/Magentas. Last time we ran, I was on Parma Cyan/Magenta, not the usual Parma Plaid/Purple I've been using. Even with the softer foams, if it's glued well, it shouldn't peel! I was ready to go all Jacos, but after peeling ALL my sets, I'm done.
Do you have any new Dbl Pink, Dbl Pink/Orange sets from Jaco, I'd be interested.
Randy Caster is offline   Reply With Quote
Old 12-26-2004, 12:24 PM   #5935
Tech Adept
 
Join Date: Sep 2004
Location: Tampa, FL
Posts: 218
Send a message via AIM to JackinTampa
Default

Just painted this....

JackinTampa is offline   Reply With Quote
Old 12-26-2004, 12:27 PM   #5936
Tech Prophet
 
Randy Caster's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2003
Location: Costa Mesa, CA
Posts: 16,675
Trader Rating: 46 (100%+)
Default

What color blue is that?
Randy Caster is offline   Reply With Quote
Old 12-26-2004, 12:41 PM   #5937
Tech Master
 
KREATOR1's Avatar
 
Join Date: Sep 2003
Location: Malaysia
Posts: 1,706
Trader Rating: 8 (100%+)
Send a message via Yahoo to KREATOR1
Default

thats a nice blue car you got there!!!
__________________
TA04ss / TA04TRF / TB EvoIII/ TB02 /DF02 / M03L / TRF414m2 / TRF415 / TRF415MS / TRF415MSX / MRE
KREATOR1 is offline   Reply With Quote
Old 12-26-2004, 01:14 PM   #5938
Tech Adept
 
Join Date: Sep 2004
Location: Tampa, FL
Posts: 218
Send a message via AIM to JackinTampa
Default

I have been looking for a "tamiya" blue forever.

I went to a Hobby shop I dont normally go to...

I was like..."heeey, this looks kinda coooool..."

Its faspearl blue...it sure is pretty. Never have used it before. I always use testors paint. It was a PITA to paint. Its much different than anything else I have used. I'll get the hang of it though.
JackinTampa is offline   Reply With Quote
Old 12-26-2004, 01:17 PM   #5939
Tech Prophet
 
Randy Caster's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2003
Location: Costa Mesa, CA
Posts: 16,675
Trader Rating: 46 (100%+)
Default

I like the color, thanks.
Randy Caster is offline   Reply With Quote
Old 12-26-2004, 01:17 PM   #5940
Tech Master
 
FW-05RR's Avatar
 
Join Date: May 2004
Location: SoCal
Posts: 1,384
Default

nice body there jack
FW-05RR is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
TAMIYA TRF415 Xray XB8 R/C Items: For Sale/Trade 32 04-04-2008 08:50 PM
Tamiya TRF415 Crashmaster R/C Items: For Sale/Trade 19 12-13-2006 04:48 PM
Tamiya TRF415 MS NIB koabich R/C Items: For Sale/Trade 8 11-11-2005 07:28 AM
F/S Tamiya TRF415 rraden R/C Items: For Sale/Trade 20 06-10-2005 09:02 PM
Tamiya Evo IV or TRF415 TheDevil Electric On-Road 23 10-15-2004 07:27 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 12:57 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net