Picture Attachments Fixed? (18 Feb 2023)
Hopefully, the pictures uploads are fixed for the time being. Let me know if you continue to have issues. I am looking into a more permanent solution. Thanks for your patience. - Makotosun
SC500 build
- turbodan
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Replied by turbodan on topic SC500 build
The motor is assembled and sitting on the bench. I did have a little trouble with the clutch side cover. Turns out the SC cases were not drilled as deeply as the DT where the tach drive post mounts. The side cover refused to fully seat until I drilled the hole in the side cover about 8mm deeper. All good now.
The clutch got some oil holes drilled. That's another thing you see on modern stuff that I believe helps alleviate the clutch drag with the lever pulled in..
Went with the blue painted DT360 springs in the clutch. Of all the ones I have these had the longest free length and were the stiffest under compression. We'll see how it holds under power, hopefully soon.
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- turbodan
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Replied by turbodan on topic SC500 build
Apparently it's being sold by the guy that's always taking pictures of the Loch Ness Monster and Bigfoot. Can't see shit. I can tell from the few pics that are decent that it's got holes in it and will need some general repair. Still far easier to fix one than to make one. It does look like the proper 500 pipe though. The joint between the stamped body and the head pipe is in the right spot. When it gets here I'll have a better idea of what needs to be done. Thank God somebody finally put one up though. I've been scouring the Earth for several months. Missed a pristine one back in May by filtering my eBay search to "used" condition only. Who could have known that somebody was going to find a BRAND NEW NOS pipe in an old bike shop. Whatever. Someday I'll find a way to get over that,
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- turbodan
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Replied by turbodan on topic SC500 build
I am also having some difficulty determining which dents are damage and which were intentional for clearance. This one, for example, appears to have been done intentionally. I will take it out though because it seriously disrupts the first half of the baffle cone.
I also splurged on some proper clutch springs. Barnett had them in stock. Good quality parts and much stiffer than the best used springs I have. I have little concern for clutch slippage at this point.
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- turbodan
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Replied by turbodan on topic SC500 build
I was almost expecting to be disappointed considering how well the 360 is running. Didn't really want to pull that motor out but the time had come to wrap this up.
The power is there, this thing hauls serious ass. Geared 17/44 like I had on the 360 and you cannot keep the front wheel on the ground in first gear. The low end torque is a little soft, comparable to the 360. The midrange hit is very strong and it signs off abruptly around 6500. The four speed box isn't bad but I would prefer the five speed if not for the question of durability.
I will get some video as soon as the jetting is sorted out, provided it doesn't grenade before then. So far so good though, I've put about 20 miles on it and a few 80+ mph pulls with no distress.
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- jsaul53
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Replied by jsaul53 on topic SC500 build
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- turbodan
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Replied by turbodan on topic SC500 build
My 500 motor is back on the bench. It was not street appropriate in it's existing state, imagine that. I did make some improvements in porting that should improve it's character but I have not put the motor back in to test it again. The 360 with the custom pipe is running extremely well with gobs of power. It is also perfectly happy cruising at part throttle. The SC is more of an "on or off" type of delivery. It should be better with improved porting, my first time around didn't make many changes. Wanted to see what the stock baseline was and go from there, and the stock baseline is pretty rough.
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- automan
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Replied by automan on topic SC500 build
Funny it is identical
cliff
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- Ht1kid
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Replied by Ht1kid on topic SC500 build
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- Ht1kid
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Replied by Ht1kid on topic SC500 build
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- turbodan
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Replied by turbodan on topic SC500 build
The pipe on my 360 starts to come on at 2800 RPM and pulls to 6500. If I could have gotten the 500 to make power that low I would have been stoked. Might have helped me overlook the generally poor part throttle manners.
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