K&B 7.5 Outboard flex shaft durability

Advertise with us
Shop deals on ebay
shop deals on amazon
Intlwaters

Help Support Intlwaters:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Ronnie Lerew

Ronnie Lerew

Well-Known Member
Joined
Nov 11, 2011
Messages
772
I have two K&B 7.5 factory made Outboard flex shafts one is more stiffer and a different color then the other. Which one wears better?

Ron
 
Although it's been a couple of years since I ran 7.5 outboard, I don't think I could say that two flex cable with differing flexibility wear any different.

I would run a cable with greater flexibility if there was a choice. I did twist up some 7.5 cables, but never had one break.

JD
 
The older cables (3.5/7.5) had a lot of flexability to them. I think they stopped making that wind of cable for the market. The newer ones are much stiffer. I hold onto the older ones and use those on special occasions. Like nats. Regular racing I use the stiff ones. I think I only have 1 of each left.
 
Last edited by a moderator:
I actually prefer the stiffer Hyperformance shafts. last longer than K&B. The fine wound soft shafts seem to become twisted like a "curly fry" in time. Once a shaft is rotating I do not think stiffness is a power robing issue. Prepping a coarse shaft by chucking in a hand drill and wet sanding 220-400 grit will spin easier with less friction.

Mic
 
HTV Boats said:
I actually prefer the stiffer Hyperformance shafts. last longer than K&B. The fine wound soft shafts seem to become twisted like a "curly fry" in time. Once a shaft is rotating I do not think stiffness is a power robing issue. Prepping a coarse shaft by chucking in a hand drill and wet sanding 220-400 grit will spin easier with less friction.

Mic
Click to expand...
X2 on the HyperPerformance shafts. They last better than anything else we have tried in the newer high performance 46 and 67 outboard engines.
 

Similar threads

T
Flex shaft Setup??
Replies
6
Views
646
Mark Anderson
M
Ron Drake
Parts For Sale K&B 7.5 Outboard Headers
Replies
0
Views
414
Ron Drake
Ron Drake
G
Parts For Sale K&B 7.5 OB header
Replies
1
Views
372
Jonathan DeMaria
J
S
Sold Batch of K&B outboard parts.
Replies
9
Views
922
Thomas Hulbert
Thomas Hulbert
G
Sold K&B Redhead
Replies
6
Views
819
Dennis Caines
Dennis Caines

Latest posts

Back
Top