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View Full Version : Another 250R swingarm fab job



Billy Golightly
11-07-2010, 07:21 PM
Its not quit a 100% done, but you can get the jist of it. This one is +5.5 over and it'll be for me as it has a few little issues here and there being the first one this style I've built. The intended use is just general all-around without any heavy jumping. This will probably go on my 500R and be an arm for hill climbing at Hernando. Uses stock 250R linkage and suspension geometry.



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D-dub
11-07-2010, 07:39 PM
Looks awesome, expecially for a prototype. Beautiful tigs. I can hardly wait to see it mounted.

Billy Golightly
11-07-2010, 08:52 PM
Thanks Man! I really enjoy building this stuff...have a lot of fun doing it. You'll see a few more of these around I think in the near future.

Iprefer3
11-07-2010, 09:01 PM
That looks killer and strong. Man I wish I could fabricate. If I could only find someone to teach me.

Billy Golightly
12-28-2010, 11:19 PM
Coulda swore I posted some with this thing mounted up...guess not :confused:

harryredtrike
12-29-2010, 01:48 AM
looks great Billy.paint or chrome?i assume you made a jig for this prototype right.how much you thinking for retail?

torker
12-29-2010, 02:17 AM
Looks very well made. Chro-Mo? What are the weight differences? How strong you figure it will be? (comparing to stock) 1.5 times stronger? Twice as strong? Same?
Certainly looks very different man. Nice.
Keep the great work up.
TORKER.

NOS_350X
12-29-2010, 03:38 AM
Just an FYI, i have built a handfull of swingers very simular to that. I would recommend putting the two back cross braces so they touch, then weld them together. It will take alot of flex out of it, just overall make it more Rigid.

IMO the ladder style is awesome, When they are done right they can be super strong and extremely light, and they look cool.

Good job.

Kintore
12-29-2010, 09:23 AM
Dang Billy, that thing looks MINT!

Billy Golightly
12-29-2010, 09:57 AM
I want to make a few more and get all the kinks worked out before I really start going with them. That is a +5.5 over stock and it is about 3/4 of pound heavier than a stock one. Its made from .083 material which is heavier than what a lot of other builders use. It is Chromoly, too.

NOS, thanks for the input. My theory with spacing the X braces out was the fact that there was going to be pretty much zero flex inbetween to the two, as close as they were, so I opted to spread them out a little bit to help reduce the flex on either side of it;between the back one and the carrier and the front one and the shock mount cross bar. They are actually very close together, I had thought about spacing them about 1/2in or so further apart when I was building it.

Toledo_Tommy
12-29-2010, 10:13 AM
I'd buy one , I can't find anything for my 84R around here. I almost picked up a stock swinger and took it to a local shop that extends swingarms maybe in the future . Very nice work man !

NOS_350X
12-30-2010, 03:14 AM
Betwen the shock mount and the carrier you need something tying in the Upper and lower rails. The other option that i think would work well since you already have the braces in there is just put something from the upper rail to the lower rail right in the middle. Just take this as constructive criticism. Just trying to stop you from having the headaches that i had building them.

Buster Brown
01-01-2011, 04:53 AM
Very cool Billy!
Nice work!

MonroeMike
01-01-2011, 08:21 AM
Coulda swore I posted some with this thing mounted up...guess not :confused:

http://www.3wheelerworld.com/showthread.php?121638-Some-changes-to-my-86-250R

Enginerd
01-03-2011, 01:34 AM
Dang Billy, that thing looks MINT!

Agreed! It looks great!

Have you given any more thought to producing some of these for us? Any idea of price?

Billy Golightly
01-03-2011, 10:56 AM
I can make them probably for just about anything. The problem I run into is that the carrier housings I am using now (250R, and 450R soon to accept modern cheaper parts) are pretty common and easy to get. There isn't any CNC programming required to make them, and I get them from well known aftermarket company nearby and I'm able to get them with just a phone call. If we go to some oddball sizes I have to buy pretty much an entire 20ft length of the material the carrier housings would be made out of, and spend some money on turning code to machine them to right dimensions. I was going to do some in 85 250R carrier styles, but the material worked out to be about $28 bucks a foot, plus machining. So then I did some figuring and decided to keep the regular 250R front pivot spacing, shock mounting and make a style of arm with the 450R carrier housing instead of the one off 85 250R setup. Thats maybe a possibility on the aircooled arms.

And then I have to build a fixture for any new arms as well to get the correct front pivot widths, and locate teh shock mount, the default length of the arm with a center line through the carrier housing, etc. Its a very involved process and I've been one in the past that shunned the aftermarket for some of their ridiculous prices but I understand the reasoning behind it a whole lot better now. If I could get an order for something say like, 10 of them. I could probably do it. Under $500 powdercoated as a ball park idea but don't hold me to it.

tecat-z
01-03-2011, 09:13 PM
Looks great! Your tig skillzzz are really showing. Practice, practice, and more practice. Foot or hand controller?

Billy Golightly
01-03-2011, 10:01 PM
Foot control, always. A hand control would be cool in some out of position stuff I do occasionally one bigger things, but I've never used one and would probably be terrible with it until I had a few hours under my belt.

willrideanythin
01-07-2011, 11:59 PM
Looking good, I cant wait for the 2 wheel conversions to hit the market.







































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