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Tamiya mini cooper

Old 10-06-2008, 05:50 AM
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Tony mentioned in his article "Damping and springs are separate". I assume this means in separate locations on the car? If so they would not show on the drawings
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Old 10-06-2008, 06:19 AM
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Looks very interesting. I think I see some coils peeking through on top of the front/rear hubs... Maybe the separate springs?
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Old 10-06-2008, 07:49 AM
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sosidge - I think you may be right about sharing parts or designs with the E10. I've heard they're coming out with a buggy based on the E10.
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Old 10-06-2008, 02:31 PM
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Tokyo Hobby show is on the 16th October, it's unlikely that HPI would miss an opportunity like that so I imagine we'll see the production version of the car there.

As for the springs, they're situated on top of the hubs. They sit in between the hub/uprights and the upper arm. A variation of the classic 12th scale design.

In this pic I've highlighted where the spring is on the rear.

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Old 10-06-2008, 02:50 PM
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Hmmm...Depending on the lower arm position (which looks level in the CAD rendering) then this would have a negative camber gain as the suspension compresses...That's just really odd and not good for handling. Also back to having the battery on one side again...yuck
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Old 10-06-2008, 02:51 PM
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I've been in contact with HPI in California. The customer service people don't know a lot about the HPI mini, but it is in development and should be out next year. It's being desigend by the same person who worked on the new Baja truck. There comment was "you won't be disappointed."
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Old 10-06-2008, 03:25 PM
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Originally Posted by InspGadgt
Hmmm...Depending on the lower arm position (which looks level in the CAD rendering) then this would have a negative camber gain as the suspension compresses...That's just really odd and not good for handling. Also back to having the battery on one side again...yuck
Well strictly speaking - yes... But I reckon it'll be like the bump steer on an M03. Looks horrendous when you're holding the car up off the ground, but in practice when the car is actually moving the impact would be minimal.
Don't forget that (with an M03 at least) the suspension only moves a few mm and the change in geometry over that small distance I'd suggest would have very little effect.
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Old 10-06-2008, 04:34 PM
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Possibly...but bump steer was quite prominate in pan cars back before the angled steering mounts and didn't really effect the handling much there either...but changes in camber gain had a pretty noticeable effect on the handling.
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Old 10-06-2008, 08:26 PM
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It's pretty cool and everything, and I want one right freakin' now, but it's not an M chassis is it?

I suppose the only real issue I see is that someone will show up with one at our club for a race night, and I'll have to explain to them why either A) they can't race, or B) they can race, but their laps won't be counted. Had to deal with this sort of thing before.

The upshot: This means more tires will become available for minis, maybe even in N. America!

Jim
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Old 10-07-2008, 03:10 AM
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I've already had people asking here too Jim.

Rest assured as soon as they hit the shops we'll have one (maybe even before ) and we'll see how they stack up against the M03.
There may be a way of achieving parity between the two, who knows...
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Old 10-07-2008, 03:45 AM
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Out here we run any mini chassis so long as they run mini sized rims and tires. FWD, RWD, 4WD all together. We've found on our track with the Mabuchi can motor restriction that the 4wd cars have too much drag in the drive train so they do not have an advantage over the other mini cars. The wins get traded back and forth between all of the chassis types quite evenly.
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Old 10-07-2008, 11:07 AM
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tony,

i recall reading about some guy race mini set up where every mods will save about 1 second, its the page deleted?

would be so kind to forward me the link?

thanks ya....

initialy i was not able to set up my mini, it will just lose control and crash, and parts are broken, recently i got it to run smoothly....thanks to all the tips here....

and also the "virus" spreading here.....

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Old 10-07-2008, 02:12 PM
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Ahh, that article was an 'April Fools Day' joke Edwin... It's still on the site but I don't think you want to be following any of the tips....

Now, for those who want some more pics of the new HPI... Here we are.

Scanned copies will be up on rc-mini in a day or two (when Tim gets back from o/s)
Attached Thumbnails Tamiya mini cooper-hpi-mini01.jpg  
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Old 10-07-2008, 02:21 PM
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Hopefully Hpi will make some more bodies now. id like to see a re-release of the GTI
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Old 10-08-2008, 02:16 PM
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I think what it does prove is that the 'Mini' class is very much alive and well. For HPI to go to the trouble of doing an all new car, they must think that there's a real future for the class.

And you have to wonder, will Tamiya respond with a new design M03 maybe?
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