originally cone shaped tubes rear part design to oval shape

[sameh]

Hi
I am starting in a process of ordering new RIB (actually good quality from china!!!)

here in the middle east is semi desert and very hot in summer. problem with cone tubes is that the joint between the hypalon and the plastic part in the cone rear part gets dissolved by heat and hence demanding fixing from inside of the tube by making a big cut in the tube! that happens here even with the best quality RIBS such as zodiac or quicksilver.

there fore, I was advised by someone here who deals with tube repair to order a tube with an oval shaped rear part with no foreign plastic piece joined in the center instead of regular cone shaped so to avoid the dissolving problem by heat.

saying that, it turns the tube into shorter tube due to taking down the cone part and hence about 20-25 cm loss of tube length.

my question is: do you think this would affect plaining due to lack of support from the cone part that helps raising the rib back part above water and plaining faster?


Would you recommend compensating for the tube shortening by originally have a longer tubes so that the oval rear part of the tubes would still be same length as original tube design?

or you believe it would not matter much!


hope my question was clear. would appreciate your help

[jeffstevens763@g]

https://www.google.co.uk/imgres?imgu...act=mrc&uact=8

i dont think it makes much differance this type you mean

[sameh]

Originally Posted by jeffstevens763@g

https://www.google.co.uk/imgres?imgu...act=mrc&uact=8

i dont think it makes much differance this type you mean

yes exactly
anyway, i was advised now by the factory that the length stays the same! so maybe after all the length doesnot change!

[jeffstevens763@g]

thats right i have a mercury 365 which is the same length as the quicksilver 380 in terms of forward of the transom all they have done is make a stubbie cone rarther than a pointed one keeping the tube diameter for longer going to the stern keeping the same amount of buoyancy in the tube to support the engine and thrust

[sameh]

Originally Posted by jeffstevens763@g

thats right i have a mercury 365 which is the same length as the quicksilver 380 in terms of forward of the transom all they have done is make a stubbie cone rarther than a pointed one keeping the tube diameter for longer going to the stern keeping the same amount of buoyancy in the tube to support the engine and thrust

problem solved! many thanks