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Old 11-17-2009, 06:34 PM   #1246
LJH
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Hello all,
been lurking here for a few weeks now and have finally bite the bullet and purchased the 2.7RS, by the way this is the most informative thread on the CR on the NET, thanks guys. I have been involved in RC for some 25+ years starting off with cars and then moved onto gliders and planes. I have had a number of RC cars over the years and most recently have had a TA-03 and a F201 which was just stolen when my wife and I had our house robbed. As you can guess from the F201 I love really well done scale cars and that is what got me interested in the Cup Racer...they look fantastic. Anyhow I am starting to look at what to power it with and from reading every post, that took awhile, it seems that people like these with with a milder set up. I am totally comfortable specing power systems for my RC planes but when it come to cars I am at a bit of a loss especially with the difference between brushed and brushless systems wind count. I am guessing something like a 10.5 turn brushless system would be what I am looking for? Could be totally wrong here though as I do better when using the KV of a motor then the turns. Also wondering what Lipo packs people have used that fit the battery holder.

Thanks and looking forward to the build, attached is a 2.7RS that I saw up at Lime Rock over the summer, what a cool color.


Cheers,
Jim
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HPI Cup Racer 1M-porsche-carrera1-small.jpg  
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Old 11-18-2009, 02:32 AM   #1247
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I do think I want one of these.
But a 4WD 240Z or Datto 1600 (510)? WRONG!

Has anyone tried running one of these as a RWD? Maybe with a reversed spool in the front so you have some brakes?

Would be cool, especially as a rally car
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Old 11-18-2009, 06:49 AM   #1248
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Originally Posted by azenis View Post
I do think I want one of these.
But a 4WD 240Z or Datto 1600 (510)? WRONG!

Has anyone tried running one of these as a RWD? Maybe with a reversed spool in the front so you have some brakes?

Would be cool, especially as a rally car
Yes, it works quite well as RWD. I had to lock the diff as the motor only has to turn the rear wheels.
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Old 11-18-2009, 11:57 AM   #1249
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But a 4WD 240Z or Datto 1600 (510)? WRONG!
I guess all the Touring Cars using all those bodies from RWD or FWD bodied cars are wrong too.
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Old 11-18-2009, 01:03 PM   #1250
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I guess all the Touring Cars using all those bodies from RWD or FWD bodied cars are wrong too.
Heh. In a way. But there is a 4WD Mazda 6, and they are not really realistic looking, and designed as a race car. Yup anything with a realistic looking body I reckon would be heaps cooler with the appropriate drivetrain, especially a car which is meant to be for fun and does not need ultimate grip.

Just sayin.
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Old 11-18-2009, 01:56 PM   #1251
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Maybe with a reversed spool in the front so you have some brakes?
Isn't a spool a solid axle?

I ran Tamiya M04 for long time.. no need for front brakes.. if you set it up right it will handle well as a 2wd drive. Have been planning on testing the CR that way as well.. especially when running the RSR body..

I also run a TC electric with one ways.. for brakes all you need to do is apply it progressively and it works great. If you slam them, yes the tail will spin out.

As for 4wd.. well this entire Hobby has gone that way to make these cars easier to drive.. take 1/8 scale on roads.. not many 1:1 scale GTP cars are awd with exception of audis
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Old 11-18-2009, 02:01 PM   #1252
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Originally Posted by azenis View Post
I do think I want one of these.
But a 4WD 240Z or Datto 1600 (510)? WRONG!

Has anyone tried running one of these as a RWD? Maybe with a reversed spool in the front so you have some brakes?

Would be cool, especially as a rally car
Maybe Im barking up the wrong tree, but I just dont think you should let something like that bother you. It's 4WD it runs great and drifts well. Looks good.
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Old 11-18-2009, 02:11 PM   #1253
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Isn't a spool a solid axle?
Ah yes it is. I meant a one-way. Apologies, have been out of R/C for a few years....
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Old 11-18-2009, 03:35 PM   #1254
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especially a car which is meant to be for fun and does not need ultimate grip.

Just sayin.


I think a lot of guys getting the HPI Cup Racer, note the word "Racer," are getting them to go racing. If ya wanna "play," then do whatever ya want.

just sayin
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Old 11-18-2009, 03:42 PM   #1255
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I certainly dont think its aimed overly at such a serious level of racing. And if it is being used as such, keep it 4WD by all means.
I would just like a RWD Datto :P

No need to get aggressive.
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Old 11-18-2009, 04:13 PM   #1256
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This is a fun car hands down.. whether you want to race it or just have fun. Has great looking scale bodies too. Right now I have the Datsun 510, ABC Celica 1600 (not painted yet) Tamiya Alfa Romeo GTA (my fav body) Tamiya Mini Cooper.. and will be picking up the Porsche RSR soon as well.

If you want to run it as a 2wd, do it by all means and have a blast. Remove that prop shaft and disassemble the CVDs to the front. Slap on the Porsche RSR and steer with the back wheels 70s style.. its all good!

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Ok: Now let me get my head around this, since I don't have one to test.. a one-way installed back words... the effect would be free wheels on throttle and what would happen off throttle?
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Old 11-18-2009, 04:29 PM   #1257
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Quote:
Originally Posted by Raman View Post
This is a fun car hands down.. whether you want to race it or just have fun. Has great looking scale bodies too. Right now I have the Datsun 510, ABC Celica 1600 (not painted yet) Tamiya Alfa Romeo GTA (my fav body) Tamiya Mini Cooper.. and will be picking up the Porsche RSR soon as well.

If you want to run it as a 2wd, do it by all means and have a blast. Remove that prop shaft and disassemble the CVDs to the front. Slap on the Porsche RSR and steer with the back wheels 70s style.. its all good!
Thats exactly my thoughts

Quote:
Ok: Now let me get my head around this, since I don't have one to test.. a one-way installed back words... the effect would be free wheels on throttle and what would happen off throttle?
Yeah. It has been 4 years since I have played with one, and probably didnt think it through. I dont know what happens off throttle, I would have hoped it would freewheel, and then brake with the brakes but then that would require reverse so it would not work at all.

So forget I mentioned it

Rally tyres, 510 body, lifted suspension, RWD, brakes on the back only (handbrake style) and gravel sounds like a LOT of fun to me!
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Old 11-18-2009, 05:31 PM   #1258
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Bodies I would love to see for the Cup Racer

4WD Cars

Jensen FF
Audi Quattro
Porsche Carrera 4 (the first one)
Porsche 959
Early Subaru Impreza WRX STi 4 door
Early Mitsubishi EVO


2WD Cars

Ford Escort
Mazda RX3
Mazda RX7 (First generation)
AC Cobra
Holden Torana XU1 (that will NEVER happen )

I did see on the net somewhere a Hillman Imp body for some sort of mini chassis, anyone know it and if it would fit?
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Old 11-19-2009, 12:38 PM   #1259
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Tamiya Alfa Romeo GTA (my fav body)

Mine too, really wish Tamiya would offer this as a body only again.

Cheers,
Jim
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Old 11-19-2009, 02:16 PM   #1260
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Originally Posted by LJH View Post
Mine too, really wish Tamiya would offer this as a body only again.

Cheers,
Jim
The odd thing is they still make the kit!! It almost seems like an over sight.. lets make the kit but leave the body discontinued LOL
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