deepwaterimports
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Try this one
http://vimeo.com/jmckay/handbuiltshow
Your bike is 30 odd seconds in
http://vimeo.com/jmckay/handbuiltshow
Your bike is 30 odd seconds in
Father Son 75 CB200T Rise From the Ruins
- Thread starter Texasstar
- Start date
Texasstar
Can't is a four letter dirty word
didnt work in taptalk but it did in safari. I have good news to report other than having a heart attack when I turned around and found Zeke sitting on Shinya Kimura's bike. One of Shinya's artist friends took Zeke over to sit on it. His bike was on a pedestal the first day and then he got wind of it and made them take it down and put a sign on it that said "touch me" One of the show proctors came over to ask Zeke to get off and Shinya's friend showed her the sign.deepwaterimports said:
So Zeke made friends with Jeremy the guy who did these drawing for the show and Jeremy face timed his son with Zeke and now Jeremy and his son are going to do a build together!
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Tex,
The H&C Roller cam was a special cam for the CB72/77 that came with forged aluminum rocker arms. Each rocker arm had a roller tip to reduce wear. For the time, they were amazing technology, but the cam wasn't anything very special despite the myths that have grown around them.
As for Steve Brown's latest incarnation of his CB350, yes front end is TD3/TZ 260mm, heavy as a ll get out front drum, but they look sooooo good. The rear is really interesting and it's hard to see in that picture but it's probably a full floating rear brake plate. A simpler way is to bore the center to take a steel sleeve and allow the plate to rotate and then anchor it to the frame with a rod with heim joints at both ends.
On a CB72 that's important because it has an 8" TLS rear brake ie more brake on the rear than a CB350 front drum. So it locks up too easily. That's why I learned to keep my foot away from the brake pedal unless it's raining or snowing.
Do you have any more shots of his rear brake to confirm that hypothesis?
The H&C Roller cam was a special cam for the CB72/77 that came with forged aluminum rocker arms. Each rocker arm had a roller tip to reduce wear. For the time, they were amazing technology, but the cam wasn't anything very special despite the myths that have grown around them.
As for Steve Brown's latest incarnation of his CB350, yes front end is TD3/TZ 260mm, heavy as a ll get out front drum, but they look sooooo good. The rear is really interesting and it's hard to see in that picture but it's probably a full floating rear brake plate. A simpler way is to bore the center to take a steel sleeve and allow the plate to rotate and then anchor it to the frame with a rod with heim joints at both ends.
On a CB72 that's important because it has an 8" TLS rear brake ie more brake on the rear than a CB350 front drum. So it locks up too easily. That's why I learned to keep my foot away from the brake pedal unless it's raining or snowing.
Do you have any more shots of his rear brake to confirm that hypothesis?
Texasstar
Can't is a four letter dirty word
lorenzo is so full of crap..."I made a mental error...I had bugs on my visor" the only way he stood a chance was off the start and he knew it. Marquez broke his own track record every lap of qualifying...talk about demoralizing.Texasstar said:Oh and it looks like Marquez finally adopted your braking style. He was just amazing on the edge EVERY turn.
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Not exactly. Pops bikes featured light cranks, his own cams etc etc. His bikes won a bunch of races, but I wasn't around to see how they compared head to head against CR72s ridden by comparable riders. In fact the CR72 and 77 were made in very small numbers and were typically used by works and semi works riders and were not exactly available to the public.
CR93 and CR110 by comparison were much more available.
Race Kit parts were nice and I had most of them at one time or another, but the cam was so mild it didn't add a whole lot of top end. I tried 4 or 5 different cams over the years until I found one that really worked with my particular head/barrel/shape. It's a continuous development program. Some things work and some don't and you learn from all of them.
The ultimate CB72 were built by Jerry Kooistra. No others were as clean or as fast.
CR93 and CR110 by comparison were much more available.
Race Kit parts were nice and I had most of them at one time or another, but the cam was so mild it didn't add a whole lot of top end. I tried 4 or 5 different cams over the years until I found one that really worked with my particular head/barrel/shape. It's a continuous development program. Some things work and some don't and you learn from all of them.
The ultimate CB72 were built by Jerry Kooistra. No others were as clean or as fast.
Marquez almost lost the plot on the last turn. As for George: He managed to upset his own OCD behavior and went when the light came on. Racers watch for changes and the change they are waiting for is lights OFF. Lorenzo distracted himself when he did something he never does (tore off a tear off vizor on the grid), and when the lights came on, his brain registered a change in status and off he went. Game over.
Texasstar
Can't is a four letter dirty word
he almost caught Rossi... So engineering wise what is wrong with the Yamaha why can't they handle the tires whereas the Hondas could perform on the hard or the soft compound ... Rossi fell off dramatically towards the end of the raceteazer said:
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Texasstar
Can't is a four letter dirty word
Teazer I just found this on Michael Moores Eurospares http://www.eurospares.com/yoshbro1.jpg a yoshimura brochure claiming that they beat the the cr72 and cr77 of course those could of been dnfs so I guess this substantiates Bill Silvers article. Back page http://www.eurospares.com/yoshbro2.jpg
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Crank HP as far as I know. Very few people had dynos and even less had a chassis dyno. I figure that 31-33 crank HP is possible with a high revving min CB motor. The highest figure I have heard so far is 27 from a breathed on 175 but who knows what anyone is making and not telling us about....
BTW, there's a great booklet that Pops published back in the day telling all his CB72 secrets. Makes for good reading.
BTW, there's a great booklet that Pops published back in the day telling all his CB72 secrets. Makes for good reading.
jamiebridge
New Member
I am purely commenting on this as it is 155 pages... 155... this thread is a book! 
simo
Been Around the Block
teazer said:
I totally agree the dumbest thing people do is not ask questions, followed by not listening to the answers
I bet anyone who's delved into this log has learnt something even if it's been how to be a better teacher
My only issue with the 155 pages is I wish it had a contents page and chapters
Here's a link to a link for CYB350 engine parts for sale in Jp if you've got the $
http://www.hondatwins.net/forums/8-pictures-videos/29442-honda-cyb350-rsc-engine-parts.html
Texasstar
Can't is a four letter dirty word
We think we found another place we can reduce friction and heat. Teazer sent us on a quest and we have been researching Pops Yoshimura and found out from a YouTube video that Yoshimura uses a REM machine that does an isotropic superfinish on cams, cranks, transmissions. Have y'all tried this? Why has Superbike racing banned it? Why wouldn't we want do this to our megacycle cam, tranny, crank, etc?
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