Club 380 - RC Buggy Racing

[Zippotech]

Ich bin völlig begeistert von dieser Idee und lasse sie gerade absolut eskalieren auch wenn es in Deutschland keine Rennen dafür geben wird. 

Teile sind schon bestellt und es wird so etwas wie wenn Tamiya einen extremen HopUp Umbau für den Grasshopper angeboten hätte. 😉

 

Gruß Zippo 

[Grumpy pants]

1 hour ago, JimBear said:

Hey, that's cool! Keep us posted, Mr Pants.

(also a cool one from the video)

I’ve got a set of wheels just like this ones as well ⬆️🎉

[toyolien]

3 hours ago, Grumpy pants said:

I’ve got a set of wheels just like this ones as well ⬆️🎉

I foresee a build thread coming up 👌

[JimBear]

Does the DT-02 need something extra to be able to fit a 380, or is it a straight fit?

[Carmine A]

24 minutes ago, JimBear said:

Does the DT-02 need something extra to be able to fit a 380, or is it a straight fit?

Just a Hopper/Hopper II motor adapter.... and maybe a gear puller and 2mm pinion gears

[toyolien]

@JimBear

Nice range of aluminium 380 motor mounts available from Pinebeach Raceway (and other DT-02 parts) here:

https://shop.pbrw.net/categories/4342358

[JimBear]

11 minutes ago, toyolien said:

Nice range of aluminium 380 motor mounts available from Pinebeach Raceway (and other DT-02 parts) here:

https://shop.pbrw.net/categories/4342358

Yep, I was in there nosing around - it gets expensive! 85 euros for an adapter and 2 decel sheets ... oh-eee. May have to ponder a bit before going ahead - it would double the price of a "budget build", blowing the aforementioned budget into space.

(I might just start with the H sprue from the Holiday Buggy, #19005989 and go from there)

[BuggyDad]

Looks like the motor mounts for DT-02/3 are offset for a different pinion size. Do you need to go for a different gear ratio when moving from a 540 to a 380? I wasn't going for a DT, fancy a Wild One instead for this. 

[toyolien]

6 minutes ago, BuggyDad said:

Looks like the motor mounts for DT-02/3 are offset for a different pinion size. Do you need to go for a different gear ratio when moving from a 540 to a 380? I wasn't going for a DT, fancy a Wild One instead for this. 

10t pinion is what people use i think.

 

[Carmine A]

52 minutes ago, JimBear said:

 - it would double the price of a "budget build", blowing the aforementioned budget into space.

(I might just start with the H sprue from the Holiday Buggy, #19005989 and go from there)

Yeah.... does defeat the purpose. But nice stuff. 

I didn't even think about the HB H tree!! I'll have to look through my Oliday Buggy box. If I've still got it, I'd be happy to send it! 😀

[BuggyDad]

6 minutes ago, toyolien said:

10t pinion is what people use i think.

 

It would depend on the car wouldn't it? 

Could create a challenge for what adapter to get depending on model. 

The one I found looks to me like it keeps the same pinion size as for the 540, so could be an issue. 

https://www.ebay.co.uk/itm/286065925310

An offset non model specific one I don't think I've seen in stock. 

 

[No Slack]

There is an adapter made by Yeah. It comes with a sleeve to use the standard pinions.

[JimBear]

55 minutes ago, Carmine A said:

 If I've still got it, I'd be happy to send it! 😀

It would blow the postage budget!

[toyolien]

1 hour ago, BuggyDad said:

It would depend on the car wouldn't it? 

Could create a challenge for what adapter to get depending on model. 

The one I found looks to me like it keeps the same pinion size as for the 540, so could be an issue. 

https://www.ebay.co.uk/itm/286065925310

An offset non model specific one I don't think I've seen in stock. 

 

Have a read through the draft rules. Not the easiest to read, but it does mention which motor and pinion are allowed.

https://www.facebook.com/groups/1216365429429239/permalink/1216386562760459/

 

[BuggyDad]

14 minutes ago, toyolien said:

Have a read through the draft rules. Not the easiest to read, but it does mention which motor and pinion are allowed.

https://www.facebook.com/groups/1216365429429239/permalink/1216386562760459/

 

Gotcha. Compulsory 10t pinion regardless of car. Makes me wonder whether that means some cars will be more suitable than others, but if I do this I'll probably still run a wild one, just because it's what I fancy. And that's what it's all about! 

[ThunderDragonCy]

2 hours ago, BuggyDad said:

It would depend on the car wouldn't it? 

Could create a challenge for what adapter to get depending on model. 

The one I found looks to me like it keeps the same pinion size as for the 540, so could be an issue. 

https://www.ebay.co.uk/itm/286065925310

An offset non model specific one I don't think I've seen in stock. 

 

Mark at Tamiya Junkies asked me to look at adaptors and I have modelled something up best I can. Got some samples coming next week. Will keep you informed.

[BuggyDad]

18 minutes ago, ThunderDragonCy said:

Mark at Tamiya Junkies asked me to look at adaptors and I have modelled something up best I can. Got some samples coming next week. Will keep you informed.

Nice. 3d prints? I guess with the low power of a 380 3d printed plastic might be strong enough? Might just need to embed nuts in the back - in fact I think with that my home printer would even suffice.

[gt6++]

Oh how I wish I lived in Japan, and near pinebeach raceway

[Carmine A]

4 hours ago, JimBear said:

It would blow the postage budget!

OOPS!! 😯🙄🤣

[BuggyDad]

Thinking a bit more on this, the Wild One is a bit unusual in its gear ratio and I have a feeling that might stuff it for this.

From my quick research:

Wild One - 15t pinion - FDR 9.05.

DT-02/3 - 17t pinion - FDR 9.28

So on 10t pinion the WO would have an FDR of 13.6, while the DT-03's would be 15.8. I have a feeling that the Wild One's gearing will just be too tall for the 380 motor. And for good racing you presumably want to see ratios similar as well as a common motor. The WO also has large diameter wheels (oval blocks are bigger than modern 2.2 tyres).

I see reference to an FDR of 9.33 on a 18t pinion for the Grasshopper/Hornet although I can't confirm it. That'd give it 16.8 on a 10t pinion. lower geared still. 

What do you think? Have I got this right?

The Wild One is the car that interests me the most. The Scorpion does very much too. That's too much money for this but perhaps I could think of another excuse... 😜

[JimBear]

I am sort of confused by the 10t pinion rule - it makes it iffy to run a bunch of stuff since many of the cars originally have 15, 17, 19t pinion options (although with a 540). Can you even have a 10t meshing correctly?

I had the passing idea to get the ex-Brat off the bench, possibly re-fitting it with Frog gears but that sounds unlikely now. Not sure if the Monster Beetle pinion would work?

@BuggyDad - swapping in the DT-02 gearbox, perhaps?

[BuggyDad]

3 minutes ago, JimBear said:

I am sort of confused by the 10t pinion rule - it makes it iffy to run a bunch of stuff since many of the cars originally have 15, 17, 19t pinion options (although with a 540). Can you even have a 10t meshing correctly?

I had the passing idea to get the ex-Brat off the bench, possibly re-fitting it with Frog gears but that sounds unlikely now. Not sure if the Monster Beetle pinion would work?

@BuggyDad - swapping in the DT-02 gearbox, perhaps?

Yes I wonder whether the 10t pinion rule came from a series which specified a smaller number of chassis/kit options? It pays I think to check these things now.

The rules essentially say you have to have a stock kit, with a few minor mods allowed, so gearbox swapping is out.

And I don't know where to start on gearing for the Scorpion. I think I read that's got a stock 28t pinion in a different tooth profile - if that's right it would need a rule change to be operable.

The most practical answer perhaps a DT-02. The Sand Viper is cheap as chips on Tamico and it even has bearings, so it's barely over half the cost of most other options. I don't think that's any different from the specified DT-02 options except it adds the mods you're allowed for no extra money - any body is allowed (and it comes with quite a nice one albeit not much fun). All it needs is a 380 motor mount and the pinion, and it'll be about the most common gearbox so the series will have a motor mount solution for it for sure - and since it seems to be the chassis of choice in the Japanese series it stands to reason that it suits the 10t pinion reasonably gearing-wise. I may end up doing that and fitting my Scorcher body. It could look great actually. Or shamelessly nicking the DT-02 Rough Rider idea which is still dead cool even if it's been done a lot.

[JimBear]

If I understand it correctly (I don't have one - shame on me!) the Grasshopper comes with a 10t pinion fitted on the 380 motor - maybe that's one of the reasons?

But yes, as you write, it limits the possible chassis combos.

As for the Scorpion, the Pine Beach Raceway shop has a motor mount and a specific "Ro Mans" 380S, so I would assume it would be possible to use. Have to check if it says anything about it in the (japanese) blurb.

The H sprue for the 'Oliday Buggy would be useful for a DT-02, since it contains the 380 spacer.

Edit: Having a quick look, it shows that the Ro Mans motor has a 48p 15t pinion for the Scorpion.

[JimBear]

@BuggyDad - perhaps there are some clues in this video, for the Wild One? (use autotranslate/subtitles unless you are proficient in japanese):

 

[BuggyDad]

12 minutes ago, JimBear said:

@BuggyDad - perhaps there are some clues in this video, for the Wild One? (use autotranslate/subtitles unless you are proficient in japanese):

 

Ah. Thanks.

So we either need that adapter or a local source or 3d print model. I imagine plastic would do, and for a defined pinion we could refine the model for a perfect mesh with some trial and error rather than leaving it as a slot. Although, I'm still confused as to how it's OK to race the Wild One with the others with such different ratios.

Gotta love how he says ref the 540 silver can: "It is big. It is scary. If I put such a big motor in it I won't be able to drive it. So I'm going to explain how to change it to a haircut motor that's just right for you".