Topic: The 1970 Daytona CR750s.

[Sam Green Racing]

Here's some old CR750 kit spec and parts data from member Ken736.

http://data.sohc4.net/SM750/CR750Specifications.pdf

Sam.

[Ricky_Racer]

Kudos to everyone who is contributing to this and similar threads. This is to me what the SOHC community is, has been, and hopefully will be all about: sharing information and personal knowledge learned from experience.

We are all richer in friendships for it. Thanks!    RR

[JohnN]

Attached is a photo of my seat from Mead Speed, which has the slots described. Thanks, and I hope this helps Eric as well.

[kos]

Yes the Airtech seats do not have these slots.

KOS

[CPHjimm]

Kudos to everyone who is contributing to this and similar threads. This is to me what the SOHC community is, has been, and hopefully will be all about: sharing information and personal knowledge learned from experience.

We are all richer in friendships for it. Thanks!    RR

+1 RR -

But I just wished I had these informations like 6 years ago, that would have saved me a lot of time    but again, at least every change has been done at least 3 or 4 times now!! 

[kos]

Here is photo of the kit seat bracket bolted to frame on the bike I sold to Barber Museum. Also in picture is the kit oil/air separator or "breather" tank and it's plumbing to the oil tank. Also, note the cross brace under where the seat goes. This square tube goes right under the seat where there was a cross brace molded into the factory fiberglass works part that I had in my inventory, but no on subsequent knock off/copies that have been reproduced. Also, shown in picture are the proper oil tank upper mounts from alloy with rubber grommets and steel bosses welded to frame.

KOS

Mark@M3Racing

[JohnN]

Very helpful- thanks Mark. What type of oil tank is that? I can't see the filler in this photo. I thought the kit parts list did not include an oil tank and was wondering if there are other options besides the Daytona style tanks.

I pulled out the Summer 1970 issue of Motorcycle Sport Quarterly with an article on Daytona and noticed they captured a photo of a non-factory 750 that they describe as a kit version; it has a stock CB750 oil tank. Was that typical at the time?

John

[lordmoonpie]

Very nice Mark - I sooo need one of those oil breather tanks  

[H2Eric]

Attached is a photo of my seat from Mead Speed, which has the slots described. Thanks, and I hope this helps Eric as well.

Thanks for the pic John, that's most helpful

Regards
Eric

[kos]

Very helpful- thanks Mark. What type of oil tank is that? I can't see the filler in this photo. I thought the kit parts list did not include an oil tank and was wondering if there are other options besides the Daytona style tanks.

I pulled out the Summer 1970 issue of Motorcycle Sport Quarterly with an article on Daytona and noticed they captured a photo of a non-factory 750 that they describe as a kit version; it has a stock CB750 oil tank. Was that typical at the time?

John

Originally there were three versions of kits produced. A amateur, a junior and a senior. 

Amateur Model

Carb
Seat Comp
Front Brake
Rear Brake
Handle comp (ie: Clip ons)
Megaphones
Step (rear set brackets and foot pegs)
Front cushion (forks)
Rear cushion (shocks)

Junior Model
The following assemblies in addition to those listed for the Amateur Model above:

Camshaft
Valves
Valve springs
Crankshaft AC generator (large version went into std dyno cover)
Point cam (fixed advance)
Drive chain

Senior Model

The following assemblies in addition to those listed for Junior and Amateur model:

Cylinder head comp
Cylinder
Transmission
Oil Cooler comp
Piston
Piston rings

In later bulletins, they made oil tanks and other parts such as tacho, oil gauge fairing etc, available. You must remember, at this time Honda was relatively still a small company and sales of the street going CB750 were going thru the roof... so it was hard for the rather small RSC division to keep up with orders for these parts. Later they just came with one large very complete list that had all the parts need to complete the bike.

KOS

[Sam Green Racing]

I seem to think I've seen all that before Mark..................











































































like at the top of this page   http://data.sohc4.net/SM750/CR750Specifications.pdf

Sam.

[lordmoonpie]

Stop bigging up your own posts Sam 

Mark - do you have any diagrams or plans for that oil breather tank? I could get one made and complete my bike with one of those...?

[Sam Green Racing]

I somtimes wonder is it worth it.

Sam.

[kos]

I seem to think I've seen all that before Mark..................

OOOOOps...me bad


KOS









































































like at the top of this page  http://data.sohc4.net/SM750/CR750Specifications.pdf

Sam.

[Sam Green Racing]

Very helpful- thanks Mark. What type of oil tank is that? I can't see the filler in this photo. I thought the kit parts list did not include an oil tank and was wondering if there are other options besides the Daytona style tanks.

I pulled out the Summer 1970 issue of Motorcycle Sport Quarterly with an article on Daytona and noticed they captured a photo of a non-factory 750 that they describe as a kit version; it has a stock CB750 oil tank. Was that typical at the time?

John

Originally there were three versions of kits produced. A amateur, a junior and a senior. 

Amateur Model

Carb
Seat Comp
Front Brake
Rear Brake
Handle comp (ie: Clip ons)
Megaphones
Step (rear set brackets and foot pegs)
Front cushion (forks)
Rear cushion (shocks)

Junior Model
The following assemblies in addition to those listed for the Amateur Model above:

Camshaft
Valves
Valve springs
Crankshaft AC generator (large version went into std dyno cover)
Point cam (fixed advance)
Drive chain

Senior Model

The following assemblies in addition to those listed for Junior and Amateur model:

Cylinder head comp
Cylinder
Transmission
Oil Cooler comp
Piston
Piston rings

In later bulletins, they made oil tanks and other parts such as tacho, oil gauge fairing etc, available. You must remember, at this time Honda was relatively still a small company and sales of the street going CB750 were going thru the roof... so it was hard for the rather small RSC division to keep up with orders for these parts. Later they just came with one large very complete list that had all the parts need to complete the bike.

KOS

Think of all the wear and tear to your fingers and keyboard you could have saved if you had read my post.

Sam.

[lordmoonpie]

I guess JohnN and KOS have covered this already Eric but as it's a rare event when I get my camera out I'm not going to waste these shots

First is the slots cut in my seat (mine didn't come pre-prepared) which you have to do carefully and slowly so as not to punch a hole through the seat cover.
Next is the frame from the side showing 1. How dusty it is! and 2. the rear facing angled bracket that slots into the hole in the seat
Finally the above shot which is a bit dark but you can see the two brackets either side of the oil filler.

[malcolmgb]

Hi Simon, I think you said on a post you may take it to Stafford, any thoughts on this year?

[lordmoonpie]

Hi Simon, I think you said on a post you may take it to Stafford, any thoughts on this year?

Hi Malcolm - well I'd love to! I've got the ignition upgrade to complete (slow progress, won't bore you with why) and then I have to find a way to get it in there. I fell out with Classic Mechanics new editor becuas ethey said they wanted to do an article and pestered me to set it up then left me hanging for months. I tried to enter it in Stafford last October and CMM wrote back and said they didn't consider it special enough to get an entry! Having seen some of the shiny but run of the mill stuff they do allow there I was gobsmacked to say the least.

So - plan is to get it sorted this year and iron out all the minor niggles and we'll see where we go from that point. I might even just sell it 

[malcolmgb]

Not special enough , sounds like it is a bit of an old boys network going on, how about Mallory Park Parade of 1000 bikes now that would be special. King Kenny is there this year along with Steve Baker, I believe Ferry Brouwer has his Classic Yamaha's too.

http://www.vmcc.net/1000bikes/

[lordmoonpie]

Not special enough , sounds like it is a bit of an old boys network going on, how about Mallory Park Parade of 1000 bikes now that would be special. King Kenny is there this year along with Steve Baker, I believe Ferry Brouwer has his Classic Yamaha's too.

http://www.vmcc.net/1000bikes/

Yeah I think so too. Maybe they didn't understand the difficulty of putting a DOHC crank in a SOHC engine? Festival of 1000 bikes is a must when we're all up and running - I love that event and won my first concours prize there with my Van veen Kreidler. Would be nice to give the CR its legs on track 

[HondaMan]

Hi Simon, I think you said on a post you may take it to Stafford, any thoughts on this year?

Hi Malcolm - well I'd love to! I've got the ignition upgrade to complete (slow progress, won't bore you with why) and then I have to find a way to get it in there. I fell out with Classic Mechanics new editor becuas ethey said they wanted to do an article and pestered me to set it up then left me hanging for months. I tried to enter it in Stafford last October and CMM wrote back and said they didn't consider it special enough to get an entry! Having seen some of the shiny but run of the mill stuff they do allow there I was gobsmacked to say the least.

So - plan is to get it sorted this year and iron out all the minor niggles and we'll see where we go from that point. I might even just sell it 

LMP: what is this tricky gizmo? 

[lordmoonpie]

LMP: what is this tricky gizmo? 

You mean the Kreidler HM? It's a 1973 50cc Grand Prix bike - 50cc disc valve two-stroke with 6 speeds(reduced from 12 gears on the full van veens). The van Veen team tuned the German Kreidler moped engines in Holland and got loads of GP success with the likes of Jan de Vries etc on them. Revs to 16000 rpm and the power band starts at 15250 rpm! You start it by putting in in first gear, clutch in and flick the back wheel by hand and it sounds like an angry hornet in a biscuit tin. I owned it for about 4 years then sold it as my back injury got worse, it was a tiny bike and wrapping my 6'3" onto it was hilarious for any onlookers. Man though it was awesome fun. Can you imagine doing 110 mph with what amounts to a pair of small bicycle tyres between your bum cheeks!!? 

[veloce430]

Well, it's not a Daytona bike, but these are pictures I took at the AMA national at Seattle back in either '71 or '72. Gary Fisher's Yoshimura bikes. Dick Mann was on a BSA that year and the Suzuks were still 500 twins.

Stu

[voxonda]

Hey Stu,

You just made me one happy man. Great pictures.

Thanks, Rob

[MRieck]

I agree...great photos. Funny to see rubber brake lines and hose clamps on oil lines.