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-   -   semi rigid frame (http://www.rccrawler.com/forum/wrcca-rules/554715-semi-rigid-frame.html)

tgenial58 01-20-2016 03:59 AM

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

http://img11.hostingpics.net/pics/848834IMG4558.jpg

When i look at the rules, for me, this is a MOB.
Is it ok to pass technical control in crawler comp?

Thank you :)

tgenial58 01-22-2016 07:31 AM

Re: semi rigid frame
 
Nobody has answer?
:(

I would like RCC certification for never be refused in comp.

Solitaire 01-22-2016 08:28 AM

Re: semi rigid frame
 
Post up a couple more pics...top view and side view.

tgenial58 01-22-2016 09:16 AM

Re: semi rigid frame
 
for me, these 2 pictures give answer, but when I present it at technical control, it's not time to discuss

http://img11.hostingpics.net/pics/386277IMG7494.jpg

http://img11.hostingpics.net/pics/606329IMG7495.jpg

So, if I get a RCC validation and i keep a copy with me, nobody could contest and it will make it easier for me in comp

WAM 01-22-2016 07:15 PM

Re: semi rigid frame
 
"▪ 2.5.8 - Motor must be chassis mounted. Motor mount cannot be part of or directly coupled to an axle."

tgenial58 01-23-2016 04:45 AM

Re: semi rigid frame
 
Ok :'(
So Can i mount something like that

http://img11.hostingpics.net/pics/349428IMG7496.jpg

or a sliding driveshaft is compulsory to link axle and gearbox?

TotoRax 01-23-2016 02:51 PM

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 :flipoff:

Curcal 01-23-2016 04:00 PM

Re: semi rigid frame
 
Cool stuff but thats clearly an MOA. Your motor and Trans are mounted to the axle.

tgenial58 01-24-2016 12:02 AM

Re: semi rigid frame
 
So, semi rigid frame is illegal.

Curcal 01-24-2016 06:13 AM

Re: semi rigid frame
 
Its not the frame thats illegal... your trans and motor are rigidly mounted to your axle.

tgenial58 01-24-2016 07:19 AM

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 :D

Curcal 01-24-2016 09:07 AM

Re: semi rigid frame
 
Draw a picture and post what you're thinking.

tgenial58 01-24-2016 09:35 AM

Re: semi rigid frame
 
something like that, without alu links
http://img15.hostingpics.net/pics/94...etlienpont.jpg

Curcal 01-24-2016 10:24 AM

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.

tgenial58 01-24-2016 10:33 AM

Re: semi rigid frame
 
so could you tell me how attach frame on axle, because at this moment, I don't see any solution :(

tgenial58 01-24-2016 10:53 AM

Re: semi rigid frame
 
http://img11.hostingpics.net/pics/51...etlienpont.jpg

Curcal 01-24-2016 12:05 PM

Re: semi rigid frame
 
Without changing what you currently have here this could easily compete in the 2.2 mod/pro class.

tgenial58 01-24-2016 12:26 PM

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 :cry:

Curcal 01-24-2016 12:50 PM

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....

tapped-out 01-24-2016 03:18 PM

Re: semi rigid frame
 
Quote:

Originally Posted by tgenial58 (Post 5427113)
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

http://img11.hostingpics.net/pics/848834IMG4558.jpg

When i look at the rules, for me, this is a MOB.
Is it ok to pass technical control in crawler comp?

Thank you :)
















▪ 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


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