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Old 10-13-2009, 09:55 PM   #1186
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Quote:
Originally Posted by TommyAfrica View Post
You are going have straight line bursts maybe but no chance of turning.
I know with 14T brushed I can't control it but at half throttle it is ok
but you should try it anyhow cuz it's just so darn fun to rip it up
oh yeah by the way that is with stock gearing
Surely if you gear it more towards top speed though it will be easier to control at slower speeds?

The only restrictions i can imagine are.
1/ Physical limitations of gear size
2/ What gear the motor can happily pull before over heating.



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Old 10-14-2009, 08:40 AM   #1187
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I still have not received mine yet. but I Plann on running 13.5. I can always set the EPA down lower to limit the top speed and better throttle control.
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Old 10-14-2009, 12:36 PM   #1188
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[QUOTE=gixer;6470201]Hi Guys,

I ready to ditch my M04M and am interested in buying a cup racer.


A few questions though please.

1/ My M-04M Roadster body (226mm) will fit straight on right (except maybe some faffing with body mounts).

2/ What's the highest gearing you can fit on the CR (as in for top speed)?

3/ I have a 9T 4300kv Ezron motor and Esc sitting here, it's far too much of a motor for the M04M, how would the CR handle it?

I just switched from an M04M as well. I was running the Alfa GTA body. Will fit just fine, there are plenty of body posts for the cup racer

As far as motor, I was running a Havoc 13.5 in the M04M and transferred it right over to the cup racer. Ran mine with a 37T pinion and 60T spur (bought it used and was already in it). Car was fast but had no problem handling the motor. Motor did warm up towards the end of the run but I did not have my temp gun to check it. If I was on a track, I would probably dial down the EPA though.

I have a lot of Tamiya 0.4 pitch spurs and pinions from TA04 and TRF416. I am going to see if I can fit the 105T 0.4, diameter is about the same as the stock 67.... and since 0.4 are finer pitch, I will be able to fine tune the drive ratio a lot more.

I'm going to miss the M04 rear wheel drive.. although just for kicks Im going to try running it 2 wheel drive.. for true 60 / 70s style rear end steering.. especially with the Carrera RSR body
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Old 10-14-2009, 02:30 PM   #1189
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Looks like the Porsche 911 Carrera kit is in stock at Tower Hobbies. Whos getting one!? wish i had the money
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Old 10-14-2009, 02:34 PM   #1190
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Body parts set is not though... Hpi site shows out of stock. They haven't listed part number for wheels either
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Old 10-14-2009, 05:02 PM   #1191
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Tamiya is releasing 2 more M Chassis cars, Fiat 500 Abarth Assetto Corse and a Datsun 280ZX with a resin driver figure.. 280ZX looks good but its on a M05 chassis? Front wheel drive?

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Old 10-14-2009, 05:38 PM   #1192
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Thanks raman,

Is that the fastest motor being run in a Cup Racer then?
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Old 10-14-2009, 05:49 PM   #1193
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I sure hope they come out with a BMW 2002 body car. I would buy one just to have it. 2002 Turbo, that would be shizzle..
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Old 10-14-2009, 06:51 PM   #1194
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Quote:
Originally Posted by Micro-E View Post
I sure hope they come out with a BMW 2002 body car. I would buy one just to have it. 2002 Turbo, that would be shizzle..
How about in 190mm flavour?





Available from here:
http://www.retroracing.com/epages/OV...ories/Products



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Old 10-14-2009, 11:10 PM   #1195
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Default just got one!

just purchased an assembled rolling chassis cup racer, with some upgrades. i am gonna throw in my ezrun 6000KV combo, i will be just bashing for now and only have experience with tamiya TT-01. i am curious what parts people have been breaking, with the TT01 i have been breaking the occasional diff cover/upright, front knuckle (till i switched to aluminium) and used to bend wheel axles before i learned comtrol. i found that ordering parts ahead of time was useful and would like to do the same for this chassis, i have had several datsun 510's and am VERY excited to get a scale version in a few days! also, spare parts, where do i get them for the most reasonable price?
thanks for your time.
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Old 10-15-2009, 03:30 AM   #1196
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Thumbs up waaaaaaaw i like this car kit but ...

its very nice
good point
1- shaft drive 4x4
2-loke like its lighte
3-the air from down will make the motor & battery coler

but week point
1- the rer diff is ball diff can be fix ( replase to gear diff )
2- its not 1/10 its betwen ( 1/10 and 1/12 )

i hope if hpi make new kit
with two gear diff and 1/10 s
it will be the best car for brushless motor
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Old 10-15-2009, 07:00 AM   #1197
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I don't have one yet, but I'm seriously considering getting one. Isn't the whole point that it's "true" 1/10, not standard size? And as far as the rear diff, rear ball diffs are the norm for 1/10 sedan chassis.

Also, a question for CR owners: if I run a mabuchi or similar 540, will it be comparable in speed to a Tamiya M series? My track races a Mini class (M03s mainly) and I was wondering what I could do to make a Cup Racer run as close to the same speed as possible.


Quote:
Originally Posted by musaed View Post
its very nice
good point
1- shaft drive 4x4
2-loke like its lighte
3-the air from down will make the motor & battery coler

but week point
1- the rer diff is ball diff can be fix ( replase to gear diff )
2- its not 1/10 its betwen ( 1/10 and 1/12 )

i hope if hpi make new kit
with two gear diff and 1/10 s
it will be the best car for brushless motor
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Old 10-15-2009, 12:27 PM   #1198
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Thanks, Mark! Appreciate the tip on the 2002 body..
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Old 10-16-2009, 04:23 AM   #1199
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No worries.

Is there a more active HPI Cup Racer thread on another forum?



This forum is fantastic and pretty much 95% of all my questions i was able to answer from a quick search.
But it does seem a little slow on certain models compared to other forums.

Any other good CR threads out there?



Cheers
Mark
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Old 10-16-2009, 11:37 PM   #1200
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is there spool for cup racer? thanks.
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