Topic: New cam chain tensioner from CycleX

[turboguzzi]

taken form here...
http://www.ebay.com/itm/ROLLER-for-CB750-K1-K8-F0-F1-CAM-CHAIN-TENSIONER-PA6G-polyamide-ROLLER-CNC-/251055829266?pt=Motorcycles_Parts_Accessories&hash=item3a7417f112

PROPERTIES OF POLIKES®:

100°C Service Temperature

an air cooled motor's service temp is considerably higher than 100 C...

[Bill/BentON Racing]

TG, my thoughts exactly!! Kennys 250-300C @ LEAST! Costs of material high but worth it. Bill

[simon#42]

sorry to go against the flow but i dont think this type of tensioner is a good idea in a high performance engine , the weakness will always be the wheels regardless of what they are made of .

[bwaller]

sorry to go against the flow but i dont think this type of tensioner is a good idea in a high performance engine , the weakness will always be the wheels regardless of what they are made of .

I tend to agree and why I asked if they used this set-up in their roadrace engine.

[MRieck]

In a perfect world I would like a set up like the 550 ....a long blade with a gentle arc and sizable contact area. Honda did it for the 750 when they were using the double cam head on the SOHC case. They also used a primary gear as opposed to chains (another thing I'd like in a perfect world).
 The problem with the KA Performance piece is when you really mill and deck it moves the tensioner in an there is less contact area. Th chain also comes close to the retaining pin.
 Everything is a compromise I guess.

[simon#42]

yes alas everything is a compromise , but look on the bright side mike if these engines were perfect you would need to find a new hobby !

[Bill/BentON Racing]

No they didn't, but it was the rr engine and the slipper type tensioner that got Kenny looking for something better....like the mls headgasket! The dragracer will have one in it, Kenny believes in it, so do I. Wheels always the weak pt.....yes, if they wear out or distort cause of heat.100C going to distort or melt! Its the lower wheel that's the key along with material used.My .02. Bill