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Sip Brake Caliper PROBLEM.

Posted: Sat Aug 31, 2013 10:05 pm
by H,POOL GADGE
Hi, px200e anybody experienced any problems with the sip caliper catching the inner tube valve!!! the back of the caliper rubs/catches the bend on the valve, why's that...only solution is to me is to re-drill the rim, closer to were the 2 wheel rims come together, should'n have to do that should ye, or do ye????? plus they take forever to bleed!!!!!
ps all me rim valve holes are all in the same place...

Re: Sip Brake Caliper PROBLEM.

Posted: Sat Aug 31, 2013 10:17 pm
by CutdownSpence
The tube takes ages to bleed the pressure out ?

Re: Sip Brake Caliper PROBLEM.

Posted: Sat Aug 31, 2013 10:28 pm
by goldeneye
used to get this problem quite often on some Piaggio Grimeca calipers as well. had to gently grind the back of the pad locating pin , to stop the innertube valve hitting it. happened mainly with Michelin Airstop inner tubes. dunno about the SIP version, as ive never fitted one. (but I'm in the market for one for my T5 , so watching the outcome.......)

Re: Sip Brake Caliper PROBLEM.

Posted: Sat Aug 31, 2013 10:33 pm
by goldeneye
is this with split rims ? or SIP tubeless? the SIP tubeless on mine (T5, drums front and rear at the minute) I had to grind away a bit of the drum hubs front and back, as the valves were sitting "on the pi,ss" , and would have popped otherwise.

Re: Sip Brake Caliper PROBLEM.

Posted: Sat Aug 31, 2013 11:21 pm
by H,POOL GADGE
split rims Gadge!!! i don't see any other option apart from re-drill the valve hole in the rim, closer to where the 2 rims meet!!! £85's worth of Fookin tackle fanny shite again Bah!!!
and Sip says....fits existing brake system no modifications are required. WELL i ..............

Re: Sip Brake Caliper PROBLEM.

Posted: Sun Sep 01, 2013 9:42 am
by goldeneye
any chance of a fotie dinger?

Re: Sip Brake Caliper PROBLEM.

Posted: Sun Sep 01, 2013 9:58 am
by Jack221
Change the make of innertube! Some rub on the caliper and some dont! :geek:

Re: Sip Brake Caliper PROBLEM.

Posted: Sun Sep 01, 2013 11:04 am
by H,POOL GADGE
brightened the pic up so ye can see valve catching caliper, valve hole needs to be moved at least 5mm/1/4''...Bah!
G/eye, in the past i've had to file the back of the brake pad pin on the grimeca in the past!
What inner tubes out there have the tightest 90 deg valves on them anyone??????

[img][IMG]http://i265.photobucket.com/albums/ii22 ... photo9.jpg[/img][/img]

Re: Sip Brake Caliper PROBLEM.

Posted: Sun Sep 01, 2013 11:49 am
by goldeneye
if you could get a tube with a shorter valve it would miss. better than drilling rims etc. try someone elses wheel on it, see if that does it. easy stuff first.

Re: Sip Brake Caliper PROBLEM.

Posted: Sun Sep 01, 2013 4:13 pm
by H,POOL GADGE
Sorted nearly...theres 2/3 different rim types!!! U TYPE - means the valve hole is further away from where the 2 rims meet (therefore rubs the back of the caliper [img][IMG]http://i265.photobucket.com/albums/ii22 ... hoto10.jpg[/img][/img]
V TYPE - means the hole is closer to where the rims meet (which means the valve passes caliper) [img][IMG]http://i265.photobucket.com/albums/ii22 ... mage8.jpeg[/img][/img]

What a fookin carry on :x :x :x