Author Topic: Let's go roadracing...continuing saga  (Read 194031 times)

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Offline Tintop

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Re: Picture Time...track update.
« Reply #250 on: October 14, 2011, 07:31:33 AM »
Guess brent is blushing with all this attention, it is really impressive for a first season out, we all know how hard is to bring a new race bike into the sweet spot, keep it in one piece and of course ride the wheels off the thing

so sorry B, but you deserve this!

:)

TG

+1  The apples are green with envy. ;) :)
1977 CB550/4 Cafe - Speed Warrior / BOTM 03/11
1980 CB750F (project)
Whittaker GBF Vintage Racing Sidecar (XS750 power) - ITG / 151's / CMR Racing Products (SOLD)
1976 CB400 SS - stock / BOTM 04/11 (SOLD)
1973 CB750 K - basket case (SOLD)
77 CB550 Cafe build
550/750 Filter Thread
Sidecar Rebuild Thread

Offline MRieck

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Re: Picture Time...track update.
« Reply #251 on: October 14, 2011, 08:26:24 AM »
Brent is even in the current issue of http://www.insidemotorcycles.com/(Page 50    NEVER TOO LATE
     Quebec racer back in the saddle after 35-year hiatus). I cant find it online, but in the same issue, there's an article on the CR750s, built by M3 Racing .

You can find it here: http://www.insidemotorcycles.com/images/Features/1406/Page%2044-45%20-%20Win%20On%20Sunday%20Sell%20On%20Monday.pdf

I'm bringing my issue to our AGM/Banquet next month to the superstar's autograph.  :P
I'd like to read that article on Brent....can anybody with a subscription post it?
Owner of the "Million Dollar CB"

Offline bwaller

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Re: Picture Time...track update.
« Reply #252 on: October 14, 2011, 09:12:23 AM »
Hey guys thanks for the kind thoughts.

The idea behind the magazine interview was that my little story might spark interest in other people (like me I quess) to get out & go vintage racing. It was the idea of one guy I pitted with at Mosport that races both vintage & an XR1200 in the national series who is involved with marketing for the VRRA. It is an attempt at increasing membership, certainly not to pay homage to my limited talents.  ::) But for Tim... I'll sign your copy for a drink at the banquet buddy.  ::)

I have the magazine here but never had much luck scanning these things so I'll leave it to someone with some of that kind of savvy. Mike, if Deb gets to a store that carries it there may be no copies left anyway!  ;)

I received a couple more pictures and seeing that's what this is all about here goes. This is how close we were most of the P3 final. That's the young gun who won on a GPZ550.





Here is how close the bellypan comes. It just barely touches the weld on the way by. (back exhaust side)






This is when Henderson got by for good in the P2 final. He went inside & I outside on a lapped rider into the lefthander of the chicane. I tried to stay ahead of him but went in way hot & tooo deep and finally had to straighten it up and exercise my motocross skills. I told him I tried to get back by him anyway I could and we nearly pissed ourselves laughing.   ;D  Not very flattering, but that's racing I suppose. Of course the joke around the pits later was I should install a mower deck.


« Last Edit: October 14, 2011, 09:36:23 AM by bwaller »

Offline FunJimmy

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Re: Picture Time...track update.
« Reply #253 on: October 14, 2011, 11:16:41 AM »


Brent

It doesn't take much to see who has the correct race posture and who just so badly wants to drop a knee.   ;D
You never see a motorcycle parked outside of a psychiatrist's office!

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http://forums.sohc4.net/index.php?topic=27159.0

Offline bwaller

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Re: Picture Time...track update.
« Reply #254 on: October 14, 2011, 12:23:33 PM »
Jimmy, he has stock bars on that bike so it's a real "sit up & beg" position. He's fast indeed.

Offline TimV840

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Re: Picture Time...track update.
« Reply #255 on: October 14, 2011, 05:19:09 PM »
I'd like to read that article on Brent....can anybody with a subscription post it?

I'll try to copy it for all to see over the weekend, if someone else doesn't get to it first.

But for Tim... I'll sign your copy for a drink at the banquet buddy.  ::)

Hahaa! I'll be buying you(and Deb) more than one for what you did for me at the last race.

Jimmy, he has stock bars on that bike so it's a real "sit up & beg" position. He's fast indeed.

Yes, Lee is one of the faster guys in the club. The Period 3 Superbike class requires the bars to be attached above the yoke. They look kinda goofy to me, but I guess that's how they ran them in the early eighties. He gets around the track pretty good for being so high up on the bike...

TimV
'71 CB350 - Race
'72 CB175 - Pitbike
'75 TR750 Replica - NEW Race
'85 Interceptor 500 - Street
'86 VFR 750 - Street
'96 VFR 840 - Street
'88 FZR400 - 1st Race Bike / Now Street

Offline MRieck

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Re: Picture Time...track update.
« Reply #256 on: October 14, 2011, 06:29:18 PM »
Brent's bike can be made to go faster and quicker....I guarantee. I don't know about those other guys equipment.
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Offline TimV840

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Offline fastbroshi

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Re: Picture Time...track update.
« Reply #258 on: October 16, 2011, 09:22:08 AM »
Uh oh Brent, now we've got a picture of you to Photoshop  ;D
Just call me Timmaaaaay!!!

Offline turboguzzi

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Re: Picture Time...track update.
« Reply #259 on: October 16, 2011, 03:47:56 PM »
OK, now i know why you are so fast 'brent'.....

steve parrish in disguise!

:)

TG

Offline bwaller

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Re: Picture Time...track update.
« Reply #260 on: October 16, 2011, 09:05:06 PM »
Yea, those are three of the handsomest faces you'll see anywhere.  ;) Parrish huh?

Hey guys by the way, Tim (4hundred4racer) finished 1st in one class & 2nd in another. Well done Tim.

Online scottly

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Re: Picture Time...track update.
« Reply #261 on: October 16, 2011, 09:46:58 PM »
Well done, Brent! Perhaps we could see a pic of Tim? Turnabout is fair play.. ;) ;)
Don't fix it if it ain't broke!
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Offline TimV840

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Re: Picture Time...track update.
« Reply #262 on: October 17, 2011, 04:43:34 AM »
Hey now, this is Brent's thread! Let's concentrate on poking fun at him, ok?  ;D

I haven't been in a fancy magazine article in almost 10 years, so here's a photo(link only) you can doodle on.  :P

I'm on the left.

http://i418.photobucket.com/albums/pp262/whitebeast840/VRRA/Mid-Ohio%2009/IMG_0227-web.jpg

Cheers,

TimV
'71 CB350 - Race
'72 CB175 - Pitbike
'75 TR750 Replica - NEW Race
'85 Interceptor 500 - Street
'86 VFR 750 - Street
'96 VFR 840 - Street
'88 FZR400 - 1st Race Bike / Now Street

Offline Flying J

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Re: Picture Time...track update.
« Reply #263 on: October 17, 2011, 04:54:03 PM »
Very nice, peeks my intrest in racing but i dont think i own  bike that fits into any class at the AHRMA. Maybe ill start looking for a pre 72 125 twin.

Edit: Looks like my cb550 will work in the Formula Vintage 500
« Last Edit: October 17, 2011, 05:14:22 PM by ffJMoore »

Offline paulages

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Re: Picture Time...track update.
« Reply #264 on: October 21, 2011, 12:11:47 PM »
Congrats again, Brent! This is nice ending to a long-awaited first season back. I bet those apples are keeping you busy now...
paul
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1974 CB550 (735cc)
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Offline bwaller

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Re: Picture Time...track update.
« Reply #265 on: October 21, 2011, 12:30:48 PM »
Yea Paul it was kinda cool.

Apples are done....I won't tell you where I'm at right now.  ::)

Offline iomtt9

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Re: Picture Time...track update.
« Reply #266 on: October 21, 2011, 02:37:28 PM »
Well done Brent, and all the very best for next seasons racing .
Col ;)

Offline bwaller

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Re: Picture Time...track update.
« Reply #267 on: November 04, 2011, 05:45:06 AM »
I wonder if someone could show me a picture of cylinder sleeves grooved for separate fire rings, as well how the head gasket surrounds these o-rings? I believe MRieck groooved the original billet blocks, any view of these? What do you use for ring material? On the 500/550 Cometic's gasket is a sloppy fit, oversize holes around studs, bore holes didn't align, o-ringing might be a solution. No one is willing to spend the money on tooling to produce MLS gaskets so with higher compression copper is the only answer.

I did a leakdown and lost air through the gasket on both 1&2 so no useful numbers. I had 7% loss on 3&4, figure this might be borderline ok to re use piston rings, but this gasket deal needs a re-think.

The pic clearly shows where my air & oil leak originated!





   

Offline City Boy

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Re: Picture Time...track update.
« Reply #268 on: November 04, 2011, 06:09:12 AM »
Hi.The RC grooved barrel in my 1000 uses 1.10 mm copper wire.  Rock On
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Offline MRieck

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Re: Picture Time...track update.
« Reply #269 on: November 04, 2011, 07:27:20 AM »
My cylinders run .032 stainless safety wire Brent. .040 stainless wire can be used as well. That groove can be cut about .060 (inside edge) or so off the bore edge into the sleeve flange. The wire will definitely hold the gasket in place and eliminate slippage.
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Offline turboguzzi

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Re: Picture Time...track update.
« Reply #270 on: November 04, 2011, 10:38:13 AM »
well, the copper HG in my 500 held 4 seasons, annealed it with a torch every time it was off

expect it to sweat a little though... spraying both sides with HT paint helps a bit

TG

Offline paulages

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Re: Picture Time...track update.
« Reply #271 on: November 04, 2011, 08:44:25 PM »
Brent, My Cometic gasket looked exactly the same, with both surfaces freshly milled and copper spray on both sides. I could not get it to seal, even when annealed until it was very soft. I don't know what the problem was- never had a problem with the Brit bikes running copper head gaskets. Maybe it was too thin? Dunno. Let me know if you figure it out...

BTW, another week with no call back from Fast By Gast. I've refrained from saying anything publicly, but has anyone else had turnaround problems with them? I sent in two transmissions for undercutting (one a "core return" for Brent) a YEAR ago....
paul
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1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
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Offline MRieck

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Re: Picture Time...track update.
« Reply #272 on: November 04, 2011, 09:15:38 PM »
Brent, My Cometic gasket looked exactly the same, with both surfaces freshly milled and copper spray on both sides. I could not get it to seal, even when annealed until it was very soft. I don't know what the problem was- never had a problem with the Brit bikes running copper head gaskets. Maybe it was too thin? Dunno. Let me know if you figure it out...

BTW, another week with no call back from Fast By Gast. I've refrained from saying anything publicly, but has anyone else had turnaround problems with them? I sent in two transmissions for undercutting (one a "core return" for Brent) a YEAR ago....
YES.....BIG TIME. I'M PISSED.
Owner of the "Million Dollar CB"

Offline paulages

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Re: Picture Time...track update.
« Reply #273 on: November 04, 2011, 11:05:09 PM »
Brent, My Cometic gasket looked exactly the same, with both surfaces freshly milled and copper spray on both sides. I could not get it to seal, even when annealed until it was very soft. I don't know what the problem was- never had a problem with the Brit bikes running copper head gaskets. Maybe it was too thin? Dunno. Let me know if you figure it out...

BTW, another week with no call back from Fast By Gast. I've refrained from saying anything publicly, but has anyone else had turnaround problems with them? I sent in two transmissions for undercutting (one a "core return" for Brent) a YEAR ago....
YES.....BIG TIME. I'M PISSED.

Well Jeez... that's good to know. They've been telling me, "yeah, they're next in line" for 9 months. Last week they told me they were scattered on the mill table and would be done by the end of the week. Now it's the end of the next week. Time to find somewhere new to use?
paul
SOHC4 member #1050

1974 CB550 (735cc)
1976 CB550 (590cc) road racer
1973 CB750K3
1972 NORTON Commando Combat
1996 KLX650 R

Offline bwaller

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Re: Picture Time...track update.
« Reply #274 on: November 05, 2011, 04:40:33 AM »
It's kind of a shame about F by G. I've only used them twice but the work was excellent and turnaround time the same. Hopefully whatever problem they're having gets resolved.

Part of my gasket leak issue is that the machine shop that I used originally screwed up and had to make new sleeves. After the first race I pulled it apart found the sleeves had settled. At that point I did try pressing (gingerly) to finish seat them and them worked the deck straight on a surface plate. I expect the sleeve top flange edges weren't chamfered and I find that they have settled ever so slightly again.

That said I expect the gasket is possibly thin in one spot because both times the leak is at exactly the same spot. The stud holes are too large on this Cometic gasket, which to me leads to sealing issues, (check the pic)plus the bore holes were "only close" to matching the cylinder. It required some work.  :P I may o-ring  the sleeves this time and call Cometic to see if they can help with a better copper head gasket or I'll look elsewhere.  I will say Cometic offers viton coated steel base gaskets in different thicknesses that are excellent.





CB & Mike mentioned using copper or SS wire for a fire ring. Do you overlap the wire ends or just let them meet flush? Too bad there isn't a place to buy one piece fire rings. I foresee more trial & error figuring the groove depth & wire thickness to match the head gasket thickness I'm using.