.187 without teflone question

[video200]

I been running with teflone for years but figured sinse i snapped a few .150 cables i would go up 1 notch and go for .187 and try without teflone.
Now with 7/32" tube and .187 flex it snags and feels like there is restisance in the tube and it feels like there is WAY more resistance now then when i run with a teflone. is this normal for the first runs as things wear them self to a good fit ? the tube\flex is well oiled up and after about 10 secconds dry run the oil came out gray when i took the flex out again.
the 7/32" tube is a realy tight fit.

klaus

[JimClark]

check here
http://www.offshoreelectrics.com/pro...at=Flex+Cables

[video200]

what am i looking for there jimclark ?

[properchopper]

It's possible to use a .187 cable without teflon in a 7/32 cable IF there's no bends which slightly collapse the cable, but switching to a .250 stuffing tube liberally greased will work fine.

[video200]

i just took out the 1/4" to replace it with a 7/32" tube as recomended on OSE. the 7/32" tube have a slight bend to it to get it up to the correct hight

[HOTWATER]

Yep, I agree with Tony....187 flex, 1/4" tube, no Teflon...no problem....

-Kent

[Gary]

I agree aswell but also do this. I ALWAYS put the cable into a drill and spin it in sand paper. First with 180 grit and than 220 grit sliding it up and down as its spinning. This makes the cable smooth and I believe ceates less drag within the tube wich means less wear on the brass tube itself.

[video200]

that might work. id hate to take the 7/32" tube out again to put the 1/4" back in lol.

[detox]

I been running with teflone for years but figured sinse i snapped a few .150 cables i would go up 1 notch and go for .187 and try without teflone.
Now with 7/32" tube and .187 flex it snags and feels like there is restisance in the tube and it feels like there is WAY more resistance now then when i run with a teflone. is this normal for the first runs as things wear them self to a good fit ? the tube\flex is well oiled up and after about 10 secconds dry run the oil came out gray when i took the flex out again.
the 7/32" tube is a realy tight fit.

klaus

Brass tube will bend LOTS easier without kinking if you anneal (heat cherry red) the brass tubing before bending. I use a propane torch.

The .187" cable will work in .250" brass tube, but it seems to wobble more because of loose fit. I first anneal then insert 7/32" brass tube into .250" brass tube. I will anneal tubing in bend area only.

[properchopper]

I agree aswell but also do this. I ALWAYS put the cable into a drill and spin it in sand paper. First with 180 grit and than 220 grit sliding it up and down as its spinning. This makes the cable smooth and I believe ceates less drag within the tube wich eqeates to less wear on the brass tube itself.

Good suggestion when clearance between the cable and tube are in question, but overall a good thing to do anytime. FWIW I run .187 / .250 in all my raceboats and customer builds. One of my teammates has been running a .187 / 7/32 in his spec FE30 and has toasted two motor/speedy packages in a row and the suspicion is this may be attributed to too much drag between cable & stuffing tube which is evidenced by hand-spinning the cable. Not 100% sure, but it's entirely possible this is the culprit. Do what Gary says and hand-twirl to test.

[JimClark]

It gives you the proper tube size for just bare tube and with Teflon for each flex size

[AlanN]

If you put a lot of bend in the tubing....like an S bend go with the larger diameter tubing. If the bends are mild....the tighter fitting tube works well.

[HOTWATER]

...IMO 7/32" tube is great for .150 cable w/no teflon...too tight for .187

[steveo]

on my cat i have a long 1/4 tube and used it with no teflon at first and it was noisy as hell i though there was a problem in the driveline, so i just inserted a peice of 7/32 through up until the bend and left the rest 1/4 the drag is minimal

[Jeff Wohlt]

There is a size from 1/4 to 7/32 I think that may be better.