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Post by scottyrob on Feb 17, 2024 9:25:11 GMT -5
Lighter grey than I thought it would be, giving a stronger contrast with your black parts. Always exciting to see a build with a non black frame. Keep the pics coming! (Did you loosen the frame filter at the base of the downtube either before or after the coating? Needs to be investigated before running the machine in case it's choked with goo.) Steve, it's lighter grey than I wanted! When I was at the powder coater I ran into this - if you want it darker, it will be gloss! There's an xs 650 tracker build at my moto collective that has this frame color, it looks good - and darker with all the dark bits on it, so i'm acting like I'm OK with it. I DID loosen the frame filter, and also stuffed a plug up in there as well as all the other frame oil reservoir openings. But first task today is to blast the frame tank with solvent and get old oil and gunk out of there. Which I've been dreading because mess, and even though we have lots of tools and machines etc, we don't have a big cleanup area that we can get filthy. Going to wear my nastiest work clothes today.  Will have a variety of fasteners in the ultrasonic cleaner while I wrestle with the frame. BTW, you all will get a laugh out of this. I was showing one of the collective the center stand after I got our sandblaster working again, to prove that it was working. He grabbed the center stand and said "What this? This can't be an OEM part, the welds are terrible." Hahahahahahahaha |
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Post by scottyrob on Feb 24, 2024 19:46:40 GMT -5
Thought I had a lead on rear caliper bracket and stay arm for the brembo rear caliper I have in spares. Omega racer makes a nice spoked rear hub and sells the bracket and stay, but only as package with their hub as it turns out.
Still looking for rear brake solution, don't really want to use the OE bracket/stay/caliper/rotor.
If someone has an autocad file for a bracket, i can 3d print one!
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pops
New Member
Posts: 22
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Post by pops on Feb 27, 2024 7:42:24 GMT -5
Nice build, I'll be following! You noted earlier that you've purchased electrical bits from Rick's, and that your stator's been rewound. Did Rick's do that for you too? My SR has a bum stator and I'm looking for a shop here in the US that does a good job.
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Post by skyshadow on Feb 28, 2024 9:12:13 GMT -5
Cool build. looking forward to the finished product. Shared work spaces still exist? I remember using one when I lived in Cali, was a cool concept. But that one and all others I knew about closed over the years.
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Post by scottyrob on Mar 1, 2024 18:15:02 GMT -5
Nice build, I'll be following! You noted earlier that you've purchased electrical bits from Rick's, and that your stator's been rewound. Did Rick's do that for you too? My SR has a bum stator and I'm looking for a shop here in the US that does a good job. Pops, yes Rick's rewound the stator, I posted a pic earlier in the thread, work was spot on and wiring is excellent! |
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Post by scottyrob on Mar 1, 2024 18:17:44 GMT -5
Skyshadow, this particular one does and I know of a couple others (tho smaller) in the twin cities area here in Minnesota. Winters can be long here, storage is a must, that prob plays into it here.
A great thing about our garage is that we have positive air pressure in the hvac, with air exchange every hour, no need to drain gas tanks etc!
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Post by scottyrob on Apr 14, 2024 18:31:05 GMT -5
   Been away a bit, had some travel in there. Got back to some of my rattle can odds and ends. And made a swingarm bearing press at the hardware store and successfully pressed in fresh bearings. Next I have to figure out steering head bearings, I had loose ball bearings on removable races, I have a nice set of cartridge roller bearings replacements from thumper stuff but they're too narrow for the lower steering neck flare. |
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Post by stevep on Apr 15, 2024 10:55:41 GMT -5
I'll bet the roller bearings are also too tall. Go for more caged balls. Lovely light steering.
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Post by scottyrob on Apr 16, 2024 19:37:47 GMT -5
Sorry, why don't they fit? Were there different sized steering necks and lower bearing seats for different model years? I have one set yamaha OE cartridge roller bearings from a dealer, and one set aftermarket cartridge roller bearings from thumper stuff. The sets are the same size/fitment. Seems unlikely that they both got the part spec wrong, esp since thumper stuff only dealt with four models of motorcycles?
And the originals were not CAGED ball bearings, they were loose balls.
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Post by stevep on Apr 18, 2024 8:44:57 GMT -5
Well if you've got Yamaha roller bearings and they match the thumper stuff ones for height then great. My experience height-wise was similar to others (posted on the old version of the forum.)
My test was to stack the upper & lower bearings on top of each other and read the height. The roller bearings came out 3mm taller overall, than the loose balls in their cones that came off the bike. That 3mm height difference is a problem when reassembling!
The issue with the neck fitting is a mystery, unless the tight interference fit of the originals is easily achieved in the factory with a press, which none of us have at home. When I tried fitting the inner race of some aftermarket roller bearings I had the same problem you have. That was the clincher for me and instead fitted cones/balls, except I used caged balls.
I'm guessing you could take a file to the neck until the inner race fits. Not elegant but strength of the part would not be reduced by the removal of such a small amount of material. Just a thought.
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Post by scottyrob on Apr 18, 2024 18:35:10 GMT -5
We have a bridgeport mill, I could use it to take material off the steering neck taper. But that seems like a lot of surgery for some bearings!
I'm looking at the Yamaha Parts schematic right now, 19 loose balls on top @ $5.59ea, 22 loose balls on the bottom @ $2.95ea! Anybody know the size of these balls? They're generally a few cents each.
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Post by stevep on Apr 19, 2024 5:00:43 GMT -5
I have some to hand: they are 6mm (19 of) 4.5mm (22 of) Edit: unless some clever clogs comes along and says theyre not even metric.....  |
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neal
Junior Member
We may need a bigger hammer.
Posts: 37
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Post by neal on Apr 19, 2024 8:41:43 GMT -5
I have some to hand: they are 6mm (19 of) 4.5mm (22 of) Hey Lads, Not trying to sound like a cleverclogs here but steering head bearings on my 78 SR are not metric. 22 x 3/16" (4.76mm) top race, 19 x 1/4" (6.35mm) bottom race. Hope this helps and not confuses the issue further. |
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Post by scottyrob on Apr 20, 2024 12:48:08 GMT -5
And I can buy a 100 pack of both sizes of loose balls for $2.99, or pay Yamaha parts outlets at least $2.99 for each ball!
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Post by scottyrob on Apr 20, 2024 22:48:15 GMT -5
Got some quality time at the garage on a windy, chilly day. Managed to degrease, scrub, vapor blast, and scrub the crankcase covers and countersprocket cover. Looks good! Now to apply some two stage clearcoat so they don't oxidize. The kickstart oil seal in the right side cover was essentially "cooked on" the cover, had to scrape it out of the alloy methodically, what a PITA. Replacement on the way. Also made good headway on removing the aluminum spray coating on my supertrapp. Lots of grinding, sparks for days! And put another coat on some rattle can satin black parts. And ordered more o-rings, gaskets, and rubber frame inserts.   |
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