01-20-2016, 03:59 AM | #1 |
Pebble Pounder Join Date: Jun 2011 Location: Le Mas Petit 81 France
Posts: 189
| semi rigid frame
Hi! I builded a shafty with a semi rigid frame. the front axle is mounted with fix links. I have fixed gearbox and motor inside the frame transmission shaft is a solid axle screwed between axle and gearbox. I can unmount front axle without get out gearbox of the frame When i look at the rules, for me, this is a MOB. Is it ok to pass technical control in crawler comp? Thank you Last edited by tgenial58; 01-20-2016 at 04:01 AM. |
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01-22-2016, 07:31 AM | #2 |
Pebble Pounder Join Date: Jun 2011 Location: Le Mas Petit 81 France
Posts: 189
| Re: semi rigid frame
Nobody has answer? :( I would like RCC certification for never be refused in comp. |
01-22-2016, 08:28 AM | #3 |
RCC Addict Join Date: Oct 2011 Location: British Columbia
Posts: 1,487
| Re: semi rigid frame
Post up a couple more pics...top view and side view.
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01-22-2016, 09:16 AM | #4 |
Pebble Pounder Join Date: Jun 2011 Location: Le Mas Petit 81 France
Posts: 189
| Re: semi rigid frame |
01-22-2016, 07:15 PM | #5 |
Rock Crawler Join Date: May 2011 Location: SoCal
Posts: 949
| Re: semi rigid frame
"▪ 2.5.8 - Motor must be chassis mounted. Motor mount cannot be part of or directly coupled to an axle."
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01-23-2016, 04:45 AM | #6 |
Pebble Pounder Join Date: Jun 2011 Location: Le Mas Petit 81 France
Posts: 189
| Re: semi rigid frame |
01-23-2016, 02:51 PM | #7 |
Quarry Creeper Join Date: Feb 2009 Location: French Guiana
Posts: 433
| Re: semi rigid frame
Hi, It's not a problem of shaft. The transmission must be articulated compared to the front and rear axle. For exemple, take a legal shafty with 4 shocks, and you remplace the 2 front shocks by 2 rigide link. The trany are now not articulated any more compared the front axle and the shafty are now illegal |
01-23-2016, 04:00 PM | #8 |
RCC Addict Join Date: May 2012 Location: Folsom
Posts: 1,867
| Re: semi rigid frame
Cool stuff but thats clearly an MOA. Your motor and Trans are mounted to the axle.
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01-24-2016, 12:02 AM | #9 |
Pebble Pounder Join Date: Jun 2011 Location: Le Mas Petit 81 France
Posts: 189
| Re: semi rigid frame
So, semi rigid frame is illegal.
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01-24-2016, 06:13 AM | #10 |
RCC Addict Join Date: May 2012 Location: Folsom
Posts: 1,867
| Re: semi rigid frame
Its not the frame thats illegal... your trans and motor are rigidly mounted to your axle.
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01-24-2016, 07:19 AM | #11 |
Pebble Pounder Join Date: Jun 2011 Location: Le Mas Petit 81 France
Posts: 189
| Re: semi rigid frame
ok, so I need to add plates to fix frame directly on axle, and get out links fixed on trans and it will be legal. I could keep this shaft to link axle on trans? I have done well to ask the question then. It's just a little bit complicated for a french pebble pounder |
01-24-2016, 09:07 AM | #12 |
RCC Addict Join Date: May 2012 Location: Folsom
Posts: 1,867
| Re: semi rigid frame
Draw a picture and post what you're thinking.
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01-24-2016, 09:35 AM | #13 |
Pebble Pounder Join Date: Jun 2011 Location: Le Mas Petit 81 France
Posts: 189
| Re: semi rigid frame Last edited by tgenial58; 01-24-2016 at 10:23 AM. |
01-24-2016, 10:24 AM | #14 |
RCC Addict Join Date: May 2012 Location: Folsom
Posts: 1,867
| Re: semi rigid frame
Looks like trans and motor will still be attached to the axle. Reminds me of the moa conversion for the losi axles.
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01-24-2016, 10:33 AM | #15 |
Pebble Pounder Join Date: Jun 2011 Location: Le Mas Petit 81 France
Posts: 189
| Re: semi rigid frame
so could you tell me how attach frame on axle, because at this moment, I don't see any solution :(
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01-24-2016, 10:53 AM | #16 |
Pebble Pounder Join Date: Jun 2011 Location: Le Mas Petit 81 France
Posts: 189
| Re: semi rigid frame |
01-24-2016, 12:05 PM | #17 |
RCC Addict Join Date: May 2012 Location: Folsom
Posts: 1,867
| Re: semi rigid frame
Without changing what you currently have here this could easily compete in the 2.2 mod/pro class.
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01-24-2016, 12:26 PM | #18 |
Pebble Pounder Join Date: Jun 2011 Location: Le Mas Petit 81 France
Posts: 189
| Re: semi rigid frame
I already have a pro, with a similar frame . I know i can do that with a MOA. So it's impossible to build a semi rigid frame shafty if there isn't solution to link frame and axle. So it's illegal. It's sad to be restricted like that. We end up having the same crawler everywhere |
01-24-2016, 12:50 PM | #19 |
RCC Addict Join Date: May 2012 Location: Folsom
Posts: 1,867
| Re: semi rigid frame
Depending upon who you talk to thats the point of the shafty class. Not my cup of tea personally. If you dont want any restrictions thats where unlimited class comes in....
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01-24-2016, 03:18 PM | #20 |
I wanna be Dave Join Date: Dec 2006 Location: here
Posts: 3,042
| Re: semi rigid frame Quote: ▪ 2.5.8 - Motor must be chassis mounted. Motor mount cannot be part of or directly coupled to an axle. IMO not legal because trans is bolted to front axle. looks like you could remove 4 screws and trans and motor will stay "directly coupled" to front axle. (post 4 pic #1) very creative and great build, hopeful we will have a board in place soon to make a decision, for now I'd ask your local club you crawl with, or run in unlimited class. just my 2cents Last edited by tapped-out; 01-24-2016 at 03:44 PM. |
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