Topic: 1966 S90 - FRONT END SWAP SUGGESTIONS * PLAN B

[grcamna2]

Do CB350 front drums stop well? I liek the look of the entire front end on those bikes. It look liek I could pick up the entire front end and a front drum hub for not too much.

Would lacing the hub to an 18" wheel be a nightmare? I guess that might involve custom spokes?

The CB350K4 twin & early CB360 front-end and drum wheel will be a nice choice;they do stop very strong and it's an 18" front wheel stock.

[RAFster122s]

You will likely need to install new stops for your forks so they do not smash/smack the beautiful S90 tank.

David

[SKTP]

Great news...problem solved...search is on. Since the brake and clutch will both be cable, I am thinking inverted levers with internal cable routing...

[grcamna2]

That 350/360 front drum wheel is a nice part but heavy-looking for the S90.

[SKTP]

You mean the S190

https://tboltusa.com/store/daytona-anima-190cc-flx-engine-p-908.html

[grcamna2]

You mean the S190

https://tboltusa.com/store/daytona-anima-190cc-flx-engine-p-908.html

Yeah 

[SKTP]

Here's a quick photoshopping of a CB360 drum

[grcamna2]

The Super 90 was a screamer back in the day even stock! I can just imagine what it's like w/ the 190 engine,you could easily bury the speedo  What's the Bore & Stroke work out to ?

[SKTP]

From that link:

This 4 valve, 62mm bore x 62mm stroke engine is the newest edition directly from Daytona Motor Co. The new FLX-190 comes stock with an updated close ratio transmission, an AUTO-DECOMPRESSION CAMSHAFT and reinforced crankcases.
The FLX motor is manufactured and assembled as a 190 at the Daytona factory.

    Roller Rocker Arms
    10mm oil cooler connection
    Honda type exhaust port
    Lighting coil

Engine Includes:

    (1) Daytona FLX 190 engine with Lighting output stator
    (1) Intake manifold
    (1) Wire Harness
    (1) CDI: ( 4 selectable timing settings & 5 selectable Rev Limiter setting)
    (1) Ignition Coil
    (1) Intake manifold carb boot

*New Updated Features!:

    Improved decompression feature
    Reinforced crankcase design
    New clutch with new forged gear
    Improved CDI with a max 12900 RPM limit

[SKTP]

Here it is in action

[grcamna2]

That one looks like it has the large front drum.I like that little bike !

[strynboen]

nice ..its a cd 50..like mine.. 2 bolt engine..he had thanged the fork..think to a zundapp..and the main light is from it too

[SKTP]

I agree about the Zundapp headlight. I Wish I was a 2 bolt...but I think the frame-mods won't be too crazy and I am actually looking forward to the re-wire challenge. I think I have a line on a 68 CB350 Front end....I actually love the fork ears and the fork-covers and plan on painting everything on the bike Porsche Bahama-yellow...so lots of paintable metal on the fork is an added bonus...I wonder if the S90 finder will still fit? I do not want chrome...could I lace the 350 hub to an s90 rim? Lots to learn on this one

[grcamna2]

I agree about the Zundapp headlight. I Wish I was a 2 bolt...but I think the frame-mods won't be too crazy and I am actually looking forward to the re-wire challenge. I think I have a line on a 68 CB350 Front end....I actually love the fork ears and the fork-covers and plan on painting everything on the bike Porsche Bahama-yellow...so lots of paintable metal on the fork is an added bonus...I wonder if the S90 finder will still fit? I do not want chrome...could I lace the 350 hub to an s90 rim? Lots to learn on this one

I would want the CB350K4(72')front end as the top triple uses pinch bolts and the fork tubes are the same O.D. all the way to the top;the K4 twin uses 'tins' also if you like them.

[SKTP]

So you're saying I could lower the front at the triple like when people have their fork-tubes sticking up over the triple? I have a line on a 68 full front end (no wheel) for $100. Seem like it might be a good deal (waiting on condition photos)

[grcamna2]

So you're saying I could lower the front at the triple like when people have their fork-tubes sticking up over the triple? I have a line on a 68 full front end (no wheel) for $100. Seem like it might be a good deal (waiting on condition photos)

Yes.
The 68' front-end has different triples which don't allow movement to slide the tubes up and the top of the forks are machined-down to fit into the top triple tightly;it doesn't used pinch bolts which I prefer as on the CB350K4-K5 twins.The CB350K5/G was the last year(73') for the CB350 twin and that one used a front disc caliper the same as the CB360 disc.and the CB350K5(they also called it a 'G')didn't have 'tins' as the previous ones.I think the CB350K4 twin w/ the drum front(last yr. for that nice drum)and top triple,tins was the nicest one plus you can install the front disc brake onto the left lower/slider from the CB350G to it which is the same as the CB400F and CB360: 18" front wheel.

[SKTP]

Inspiration photo

[grcamna2]

Yes !  That S90 has a nice CB125S motor w/ great looking(I'd install different tires for riding it though..) rims.That must have been a little work    The caf'e seat looks excellent !
I'm curious what his front disc brake is ?

[firebane]

So your bike looks to come with 27mm fork tubes. You could look at something like a SR250 which has 32mm fork tubes and has drum and can easily take a 18" wheel.

Other option is to source GN125 forks which are 32mm and has a disc option.

[strynboen]

Suzuki gn-??  those forks is far to long and too heavy build..my vife had one..braking vas real good..

[grcamna2]

Suzuki gn-??  those forks is far to long and too heavy build..my vife had one..braking vas real good..

similar to a mini-chopper 

[strynboen]

yes topspeed 60 miles/100 kmt ..so no speeding..save a lot of Money...

[firebane]

Suzuki gn-??  those forks is far to long and too heavy build..my vife had one..braking vas real good..

I am trying to actually track down a set of forks and disc setup for a project of mine but we didn't get many of them up here in Canada

[strynboen]

e bay germany.

.they had milions of them..even have a gn forum dovn there...or had..think it dyes aut this years.

..the tubes is thinvalled in the top..and have no theeds in the top..just a Lock ring..and a o ring to hold the oil inside..its a press dovn(against the spring) and remove the Lock system. and it jumps up.a bit tricy first time i thanged the oil..but solid and vell funktionel bike..

[SKTP]

http://s90partspuzzler.blogspot.com/