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Author Topic: SR 250 Mono Build  (Read 947 times)

Offline Brodie

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Re: SR 250 Mono Build
« Reply #10 on: Oct 24, 2018, 15:07:29 »
Yep. I know the feeling. They do bump start well though. Just make sure the carb is in good tune and you should be right with a 4 cell.
« Last Edit: Oct 24, 2018, 22:11:14 by Brodie »
I'm not sure, but don't ask Brodie.

Way to many build and half done projects to list here.
Sr250, Gs750, Z50A, XV1100, A10, Z160A.

Offline 2Planks

  • Posts: 18
Re: SR 250 Mono Build
« Reply #11 on: Oct 25, 2018, 11:12:27 »
Anyone know where I can find the riser dampener? Looking for the rubber insert with the metal sleeve the riser bolt goes thru?
"I'd take years off my life, before life off my years"

Offline Hurco550

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  • Keep er' Between the ditches
Re: SR 250 Mono Build
« Reply #12 on: Oct 26, 2018, 11:47:50 »
Anyone know where I can find the riser dampener? Looking for the rubber insert with the metal sleeve the riser bolt goes thru?

usually a local Yamaha dealership. Looks like your in Denver, so I just searched the parts fiche at that vickery which appears to be a Yamaha dealer in Denver. Unfortunately it appears that they do not sell just the dampers separate from the top triple, which leads me to believe that they may be cast into the triple and non replaceable. I am not sure of this though, as I have never boogered with a sr250 before.

http://shop.vickerymotorsports.com/fiche_section_detail.asp?section=1140537&category=Motorcycles&make=Yamaha&year=1981&fveh=30686
"If you just picked up a drug habbit instead of a kawasaki triple at least you could get high while you waste money"
~ bradj
1988 tw200, the swamp donkey: http://www.dotheton.com/forum/index.php?topic=75455.0
2006 Suzuki DR650 Adventure monowheel trailer build: http://www.dotheton.com/forum/index.php?topic=75033.0
1976 BMW R90/6 farkilitious: http://www.dotheton.com/forum/index.php?topic=74349.msg882477#msg882477
1975 RD350 Road Racer: http://www.dotheton.com/forum/index.php?topic=70652.msg833688#msg833688
1976 GT250 Rebuild: http://www.dotheton.com/forum/index.php?topic=64973.new#new
Full Custom Pit Bike: http://www.dotheton.com/forum/index.php?topic=66954.new#new
1971 Yamaha 90cc twin HS1: http://www.dotheton.com/forum/index.php?topic=70498.0
"much ingenuity with a little money is more profitable and amusing than much money without ingenuity" - Arnold Bennet

Offline 2Planks

  • Posts: 18
Re: SR 250 Mono Build
« Reply #13 on: Oct 26, 2018, 12:14:52 »
I don't know why I didn't think of that! HAHA thanks man they had them and are on there way!!
"I'd take years off my life, before life off my years"

Offline 2Planks

  • Posts: 18
Re: SR 250 Mono Build
« Reply #14 on: Oct 30, 2018, 10:44:52 »
I thought it was Jadus on here that had some posts on removing the bottom bolt from the fork. I believe its just spinning took all my brain power engineering tools to get the caps off.  Was It Cosworth that had a post on fork rebuilds? any help  thanks guys.
"I'd take years off my life, before life off my years"

Offline irk miller

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Re: SR 250 Mono Build
« Reply #15 on: Oct 30, 2018, 11:47:40 »
After I've pulled the spring out and drained them through the top cap, I take a broom stuck cut down a few inches above the top of the fork tube, taper the end of it, then hammer it into the the hole in the damper rod.  There are other ways to do it, but that's what has always worked for me.  You just need something to hold the damper rod, which is what the screw at the bottom of the fork is holding.

Offline 2Planks

  • Posts: 18
Re: SR 250 Mono Build
« Reply #16 on: Oct 30, 2018, 12:00:23 »
Thanks ! My impact drill will be here tomorrow. I will craft something up! appreciate the help.
"I'd take years off my life, before life off my years"

Online pidjones

  • Posts: 498
Re: SR 250 Mono Build
« Reply #17 on: Oct 30, 2018, 19:32:40 »
I just use my air impact and a hex bit BEFORE taking the rest apart (drain it of course). The spring holds it enough to prevent spinning.
"Love 'em all.... Let God sort 'em out!"

Offline 2Planks

  • Posts: 18
Re: SR 250 Mono Build
« Reply #18 on: Nov 01, 2018, 09:30:56 »
Got the forks apart last night. Use a bolt extractor bit to hold the dampener rod in place. Will find some thing to fit the top of it for the re install. These shocks are in rough shape haha. Also started to prep my frame for welding. I think I check the tracking info every ten min.

Debating on putting a spacer or not any thoughts on putting it on top or bottom?

Also finger is healed from the cut off wheel. Don't take the guard off its there for a reason.
"I'd take years off my life, before life off my years"

Offline 2Planks

  • Posts: 18
Re: SR 250 Mono Build
« Reply #19 on: Nov 13, 2018, 09:12:59 »
Made some progress on the bike yesterday! Got the top shock mount pieces cut out. As well as a brace, built the seat as well. Other than than my welds needing some practice i'm happy with the ways its coming along. Still need to decide where I want my seat to come back, am thinking of keeping it parallel with the bottom of the tank( a little high in the pic). Still need to make some more braces. Also make the tank mounts. 


Questions,

Should I brace the swing arm? I think it will be fine.

Not a frame question but I started to de-lace the rims. Spokes will need to be replaced. Anyone know where I can get some spokes?? Also debating on bumping up the rear rim to an 18"? Thoughts? 
"I'd take years off my life, before life off my years"