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-   -   17mm wheel adapter (https://www.rc-monster.com/forum/showthread.php?t=23433)

david lamontagn 09.08.2009 07:51 PM

17mm wheel adapter
 
i've order 2 set of this.
Slash axle and pin are same dimension as crt.5 one.

I hope this work:whistle:

http://www.amainhobbies.com/product_...Front-Only-Kit

Foxracin 09.08.2009 09:32 PM

Slash axle is not the same size as the crt.5 Its close but not exact. I am using a set of Slash adapters on mine and there is a good bit of play from the hole being too big.

david lamontagn 09.08.2009 09:49 PM

But why crt.5 and slash use the same inner diameter hub bearing (5mm):neutral:

david lamontagn 09.08.2009 10:49 PM

OK i just take my caliper and mesure the crt.5 axle.............the section under the bearing is 5mm but just pass the bearing area, the axle down to 4.75mm:whip::whip::whip:

WHY????????? OFNA' WHY???????????????:diablo:

I've send an email to cancel my order at A Main Hobbie, i hope they'll see my message before to ship it:oh:

Now i just have to wait for the FLM ones:whistle::whistle::whistle:

Foxracin 09.09.2009 09:37 AM

Quote:

Originally Posted by david lamontagn (Post 319292)
No i just have to wait for the FLM ones:whistle::whistle::whistle:

Me and you both.

david lamontagn 09.09.2009 09:55 AM

I have some extend Jammin X1 crt 17mm adapter sitting here, i think i will gona see my machinist friend and make modify it to fit my crt.5:yes:

suicideneil 09.09.2009 07:53 PM

Question:

If you use the slash axles though, which are 5mm all the way along, then wont they still fit the crt.5 knuckles and bearings, allowing you to use the slash 17mm hex adaptors? Or am I missing something important?

david lamontagn 09.09.2009 10:19 PM

Quote:

Originally Posted by suicideneil (Post 319572)
Question:

If you use the slash axles though, which are 5mm all the way along, then wont they still fit the crt.5 knuckles and bearings, allowing you to use the slash 17mm hex adaptors? Or am I missing something important?


I've think about it, but the crt.5 use universal steel drive shaft, and on the front, the drive shaft pass thrue the C-Hub, and the Traxxas slash axle is mount on the plastic slider who'll never pass thrue the C-Hub of the crt.5.

If somebody would want a 2wd crt.5, maybe it was possible, because i'am sure that the rear slider of the slash could be fit on the rear of the crt.5, but not up front:neutral:

suicideneil 09.10.2009 02:20 PM

Ah, I understand now.

It almost sounds like tamiya & their bizzarre use of splined axles that can only work with splined 12mm hexes, that than using a normal cross pin like traxxas for example.

lincpimp 09.10.2009 02:28 PM

You could find some .125 shim stock and wrap that around the axle to make it up to 5mm... Not sure what would be that thin commonly available, but I am sure it is available, maybe in brass or something easy to bend?

brushlessboy16 09.10.2009 02:48 PM

Wrap some aluminum foil on it.

david lamontagn 09.10.2009 02:53 PM

Not sure James if i could find 0.125mm:gasp:
But for aluminium foil, i've think to try it.
When i'll recieve the adapter next week, i'll try to wrap something around the axle to remove any slop.:yes:

My crt.5 is ridiculously fast and powerfull with the MMM/Neu 1515 2200Kv and 5s with 1/10 truck tire, so i can't imagine what it'll do with 1/8 badland tires on it:surprised:

david lamontagn 09.10.2009 02:55 PM

Don't know if a good aluminium welder could fill the hole in the adapter and re-drill it to the proper size?????????

II'll ask to my machinist friend.

The AKA adapter is made of 7075-T6 alum.

Foxracin 09.10.2009 09:29 PM

Anything can be done. Just make sure to get the hole dead center or it will wobble.

I have tried some heat shrink to get rid of the slop using slash adapter buts it was to think and couldnt get the adapter on. Ill have to try some aluminum foil like mentioned.

We still need some video of you monster crt.5. lol

david lamontagn 09.10.2009 11:07 PM

Quote:

Originally Posted by Foxracin (Post 319831)
Anything can be done. Just make sure to get the hole dead center or it will wobble.

I have tried some heat shrink to get rid of the slop using slash adapter buts it was to think and couldnt get the adapter on. Ill have to try some aluminum foil like mentioned.

We still need some video of you monster crt.5. lol

Yah Fox, i'll make drill it on a lath, so it'll be realy precise.
And you just give me an idea about de heat shrink, i'll put heat shrink on the axle, mesure it and drill the adapter to fit over the shrink:party:
And when the wheel start to take some slack because the shrink start to desintegrate, i'll only remove the old shrink and put new one:party:

Thank you Fox:yipi:

And i've no digicam to make video but a friend of me have one, so i'll ask him to make the video:yes:

ta_man 09.11.2009 07:20 PM

Quote:

Originally Posted by david lamontagn (Post 319866)
Yah Fox, i'll make drill it on a lath, so it'll be realy precise.
And you just give me an idea about de heat shrink, i'll put heat shrink on the axle, mesure it and drill the adapter to fit over the shrink:party:
And when the wheel start to take some slack because the shrink start to desintegrate, i'll only remove the old shrink and put new one:party:

Thank you Fox:yipi:

And i've no digicam to make video but a friend of me have one, so i'll ask him to make the video:yes:

If you are going to drill out the adapters anyway a better solution would be to get some K&S brass tubing one size too small to fit over the axle. Cut a piece long enough to fit inside the adapter then slit the tubing lengthwise so it can expand to fit over the axle. Then you can drill (or better: ream) the adapter to fit exactly over the brass tubing (which will not disintegrate over time).

Or you could wait for adapters that fit properly.

david lamontagn 09.11.2009 07:41 PM

Quote:

Originally Posted by ta_man (Post 320095)
If you are going to drill out the adapters anyway a better solution would be to get some K&S brass tubing one size too small to fit over the axle. Cut a piece long enough to fit inside the adapter then slit the tubing lengthwise so it can expand to fit over the axle. Then you can drill (or better: ream) the adapter to fit exactly over the brass tubing (which will not disintegrate over time).

Or you could wait for adapters that fit properly.

:yes:Is the K&S is the tubing that we can buy at LHS in the plane section?

Thank you for the good tips:wink:

david lamontagn 09.11.2009 08:03 PM

I have find it at tower hobbies
http://www3.towerhobbies.com/cgi-bin...?&I=LXR826&P=7

The crt.5 axle diameter is 0.1875".

the 7/32 brass tubing have an outer diameter = 0.21875", with a wall of 0.014" (x2 to have the total wall tickness).
So 0.21875" - (2 x 0.014") = 0.19075" is the insinde diameter of brass tubing.

The gap between the inside brass tubing and outer axle diameter will be:
0.19075" - 0.1875 = 0.00325" (0.08255mm:whistle:) i'am sure that all the slop will be eliminated :yes:

The only thing i'll have to do will be to put the adapter on the lathe and ream it to 0.21865" and press fit the brass tubing in the adapter with a dab of green lock-tite. And drill the hole for the lock pin:yipi:

Foxracin 09.11.2009 09:32 PM

One more thing. The Slash adapters have a different offset for the fronts and rear so you need the same one either front or rear all the way around for it to be the same width.

david lamontagn 09.11.2009 10:10 PM

Quote:

Originally Posted by Foxracin (Post 320129)
One more thing. The Slash adapters have a different offset for the fronts and rear so you need the same one either front or rear all the way around for it to be the same width.


Yes, i've order 2 set of front one, the larger one:wink:

Foxracin 09.11.2009 11:37 PM

Good deal. Just making sure your were aware.

david lamontagn 09.12.2009 12:00 AM

Yes, thank you Fox:wink:

Foxracin 09.12.2009 09:37 AM

No problem.

ta_man 09.12.2009 10:38 AM

Quote:

Originally Posted by david lamontagn (Post 320109)
I have find it at tower hobbies
http://www3.towerhobbies.com/cgi-bin...?&I=LXR826&P=7

The crt.5 axle diameter is 0.1875".

the 7/32 brass tubing have an outer diameter = 0.21875", with a wall of 0.014" (x2 to have the total wall tickness).
So 0.21875" - (2 x 0.014") = 0.19075" is the insinde diameter of brass tubing.

The gap between the inside brass tubing and outer axle diameter will be:
0.19075" - 0.1875 = 0.00325" (0.08255mm:whistle:) i'am sure that all the slop will be eliminated :yes:

The only thing i'll have to do will be to put the adapter on the lathe and ream it to 0.21865" and press fit the brass tubing in the adapter with a dab of green lock-tite. And drill the hole for the lock pin:yipi:

I think you would be better of getting the 3/16 O.D. brass tubing and slitting it as I suggested. You would be surprised how much wobble that .00325 of play will translate to at the outer edge of the tire. With the "one size smaller" tubing you can eliminate all the play. Also keep in mind that the dimensions on the K&S tubing are "nominal" and could vary a few thousandths, leaving you with more slop that you expect.

If you didn't already know, you can order custom size reamers from McMaster-Carr (www.mcmaster.com) in half-thou increments.

justpassedu 10.26.2009 10:18 AM

if anyone would like my adapters and mohawk 17mm buggy tires id be willing to get rid of them for $55 shipped , selling my car soon and dont need them , email me at wurydaz@aol.com

jhautz 10.26.2009 02:48 PM

Mike had CRT.5 17mm adapters on display in the FLM/RCM booth this weekend at iHobby. They said they should be available in a couple weeks from what I remember. They looked sweet. Much better than shimming up the slash adapters. Return the ones from amain and hold out for the ones intended for CRT.5 is my opinion.

RC-Monster Mike 11.14.2009 01:01 PM

http://rc-monster.com/proddetail.php?prod=crt.517mm

Design works equally well with the crt.5 or mini hyper - the adapter fits over any 12mm wheel hex. The 17mm nut includes a locking set screw to prevent loosening, and is threaded to the stock axle(m4 threads). We may offer different offsets and perhaps different nuts(for 5mm axle, for example) in the future, depending on demand.


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