Frame mounting. - Page 2

Bruce's · 05-03-2017, 10:13 PM

Your picture just doesn't answer enough questions for our crackpot armchair engineering team of engine swappers , can you get a better shot or ten of the blue circle area ?Just guessing ,but all the bikes I have with aluminum mounts are in the 1/4" range ,other than the cast aluminum ones which are thicker and in some places thinner

Weldangrind · 05-04-2017, 01:04 PM

I was also thinking of mounts in the 1/4" range. I'd love to see a sketch of the mount you have in your head; I'm struggling to visualize it.

crackerjac · 06-24-2017, 03:59 PM

Weld and others that have welded to CR/CRF frames, what type of aluminum is it made from and what type of rod material did you use to tig weld to it???

pete · 06-24-2017, 07:39 PM

build a rear mount that comes off the swing arm bolt that picks up both
rear engine mounts...
a tube over the swing arm bolt with 2 triangle plates to bolt to the motor mounts..

..

crackerjac · 06-24-2017, 08:16 PM

Thanks I have all that. MY question was more about the TIG welding itself. I can't seem to find any definitive answers for the aluminum alloy the 05 CRF450X frames are made of. Some say 7000 series aluminum and have had good luck with 4043 filler rod and other 5356 filler rod but in either case you have to be very careful.

pete · 06-24-2017, 08:28 PM

welded a couple of alloy swing arms... always used 5356 filler rod
& pre heated the area...
one was welding the cast linkage mount area...
other was filling grooves left by the chain when the chain slider
wore though...

..

b44 · 06-25-2017, 11:47 PM

Quote:

Originally Posted by crackerjac

I need some opinions on frame mounts. I'm using a Zongshen 250 (232) air cooled motor and a 05 Honda 450X frame for a trail bike build. I was wondering if it would be strong enough to have just the head stay mounted, the two front (red) engine mounts, and the rear lower (blue) mounts mounted to the frame but leave the top rear mount (green) unmounted?

Otherwise I will be doing what others have done and make a C - type bracket for the back mounts that attaches to

the rear swingarm pivot bolt. It just wouldn't look as clean.

Can you use the original c-mount clamp ?from the zong? Your right about rotational force, so i think it is needed, when fitting my z250 to crfclone frame i just fitted those same highlighted bolts & still moved slightly,

Awesome project mate ill follow,

05-04-2017, 01:04 PM	#17
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	I was also thinking of mounts in the 1/4" range. I'd love to see a sketch of the mount you have in your head; I'm struggling to visualize it. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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06-24-2017, 07:39 PM	#19
pete Join Date: Jan 2012 Location: ChCh , NZ Posts: 2,266	build a rear mount that comes off the swing arm bolt that picks up both rear engine mounts... a tube over the swing arm bolt with 2 triangle plates to bolt to the motor mounts.. .. __________________ 09 XT660R ... 06 TTR250 ... 80 Montesa H6 125 Enduro... 77 Montesa Cota 348 MRR "Malcom Rathnell Replica"... Current resto projects.. 81 Honda CT110... 80 Kawasaki KL250A1... 11 Husaburg TE125 enduro... "sold" along with another 31... Lifan 125 Pitbike.. "stolen" ... KIWI BIKER FORUM...... http://www.kiwibiker.co.nz/forums/content.php All the best offroad rides in NZ... http://www.remotemoto.com/ E-mail... xtpete1@gmail.com
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06-24-2017, 08:28 PM	#21
pete Join Date: Jan 2012 Location: ChCh , NZ Posts: 2,266	welded a couple of alloy swing arms... always used 5356 filler rod & pre heated the area... one was welding the cast linkage mount area... other was filling grooves left by the chain when the chain slider wore though... .. __________________ 09 XT660R ... 06 TTR250 ... 80 Montesa H6 125 Enduro... 77 Montesa Cota 348 MRR "Malcom Rathnell Replica"... Current resto projects.. 81 Honda CT110... 80 Kawasaki KL250A1... 11 Husaburg TE125 enduro... "sold" along with another 31... Lifan 125 Pitbike.. "stolen" ... KIWI BIKER FORUM...... http://www.kiwibiker.co.nz/forums/content.php All the best offroad rides in NZ... http://www.remotemoto.com/ E-mail... xtpete1@gmail.com
	0

05-03-2017, 10:13 PM	#16
Bruce's Join Date: Apr 2015 Location: Sudbury ,Ontario Posts: 855	Your picture just doesn't answer enough questions for our crackpot armchair engineering team of engine swappers , can you get a better shot or ten of the blue circle area ?Just guessing ,but all the bikes I have with aluminum mounts are in the 1/4" range ,other than the cast aluminum ones which are thicker and in some places thinner
	2

06-24-2017, 03:59 PM	#18
crackerjac Join Date: Sep 2016 Posts: 104	Weld and others that have welded to CR/CRF frames, what type of aluminum is it made from and what type of rod material did you use to tig weld to it???
	0

06-24-2017, 08:16 PM	#20
crackerjac Join Date: Sep 2016 Posts: 104	Thanks I have all that. MY question was more about the TIG welding itself. I can't seem to find any definitive answers for the aluminum alloy the 05 CRF450X frames are made of. Some say 7000 series aluminum and have had good luck with 4043 filler rod and other 5356 filler rod but in either case you have to be very careful.
	0