Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

User Tag List

Reply
 
Thread Tools Search this Thread
Old 04-20-08, 10:11 PM   #1
dayvan cowboy
Senior Member
Thread Starter
 
Join Date: Dec 2007
Location: Athens, Ohio
Bikes: Fuji Track, Half built 70s Azuki
Posts: 1,568
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Silca Pista

So i just got this pump a few days ago and I tried using it for the first time and I got mad leakage and now my tire has less air than before.



That's the head i've got, just curious if anyone knew anything that'd be useful.
dayvan cowboy is offline   Reply With Quote
Old 04-20-08, 10:14 PM   #2
solbrothers
Banned.
 
Join Date: Mar 2008
Location: on the moon
Bikes: Cinelli Mash
Posts: 2,022
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i can has a pump?
solbrothers is offline   Reply With Quote
Old 04-20-08, 10:18 PM   #3
666pack
tarck bike.com exile
 
666pack's Avatar
 
Join Date: Jul 2006
Location: lancaster, pennsylvania
Bikes: bfssfg iro--black.
Posts: 2,058
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
are you seating the pump valve on your tube valve properly?
666pack is offline   Reply With Quote
Old 04-20-08, 10:29 PM   #4
Ziemas
Senior Member
 
Ziemas's Avatar
 
Join Date: Nov 2004
Location: Riga, Latvia
Bikes:
Posts: 10,082
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by 666pack View Post
are you seating the pump valve on your tube valve properly?
+1

Make sure to open the valve (I'm assuming you have a presta valve) and press the pump head down until you feel it seat. You should only have to push it a few mm. If you loose air while pumping try pressing it down a bit further or wiggling it a bit; soon you'll find what you need to do to pump with no problems.
Ziemas is offline   Reply With Quote
Old 04-21-08, 07:37 AM   #5
piwonka
park ranger
 
Join Date: Aug 2006
Location: mars
Bikes: recumbents
Posts: 1,794
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i put a new head on one. the seal inside didn't work too well. same problems as you. i tightened the head up some. still no workie. i cleaned the rubber seal with a q tip and rubbing alcohol. still no workie. i took a drill bit that was just a bit tight in the seal and drilled the seal a bit. it will still leak just a bit but it works ok. and as soon as i pull on the head it pops right off the stem (which i like better than it being stuck on there which is a risk to the health of your valvestem to tube relationship).

i bet if you play with the tension on the head you can get it to work right.
piwonka is offline   Reply With Quote
Old 04-21-08, 07:33 PM   #6
GeraldChan
road curmudgeon, FG rider
 
GeraldChan's Avatar
 
Join Date: Nov 2006
Location: Gaithersburg, MD
Bikes: 1973 Nishiki Professional, 1990 Serotta Colorado II, 2002 Waterford Track
Posts: 677
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you unscrew the brass head you will find a black rubber gasket. As the rubber ages it hardens and can thus leak air at that spot.

If you go to a quality LBS you should be able to purchase a kit for your Silca Pista pump to renew all the parts which help to make a good air seal. Those Silca pumps can go on indefinitely if maintained properly.
GeraldChan is offline   Reply With Quote
Old 04-21-08, 07:38 PM   #7
marqueemoon
or tarckeemoon, depending
 
marqueemoon's Avatar
 
Join Date: Dec 2005
Location: the pesto of cities
Bikes: Davidson Impulse, Merckx Titanium AX, Bruce Gordon Rock & Road, Cross Check custom build, On-One Il Pomino, Shawver Cycles cross, Zion 737, Mercian Vincitore, Brompton S1L, Charge Juicer
Posts: 7,020
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Ziemas View Post
+1

Make sure to open the valve (I'm assuming you have a presta valve) and press the pump head down until you feel it seat. You should only have to push it a few mm. If you loose air while pumping try pressing it down a bit further or wiggling it a bit; soon you'll find what you need to do to pump with no problems.
That's what I'm thinking too. It just takes a little getting used to.

I usually let a little air out of he tire before inflating. This seems to help the valve open.
marqueemoon is offline   Reply With Quote
Old 04-22-08, 06:09 AM   #8
piwonka
park ranger
 
Join Date: Aug 2006
Location: mars
Bikes: recumbents
Posts: 1,794
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
ok, if his valve didn't open, why did he have less air pressure than he started out with?
piwonka is offline   Reply With Quote
Old 04-22-08, 06:26 AM   #9
sp00ki
partly metal, partly real
 
sp00ki's Avatar
 
Join Date: Aug 2005
Location: Philadelphia.
Bikes: Hummer H2
Posts: 3,597
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
THAT PUMP IS GARBAGE.
return it immediately.
using it to get air into your tires involves finding a tiny sliver of a window between losing air while you're pumping, and losing air after you're done. finding it requires screwing the presta head just so, then screwing the schrader head to close the seal. undoing it to pull your valve out is a mess. not just that, but only ~35% of your stroke actually pushes air into the tube. Don't bother getting an exchange, it'll be the same issue.
THAT pump is a cheap knockoff of the original, which is (from what i've read) a spectacular tool. I'm inclined to believe that silca sold the rights to manufacture the pump to different standards.
Save yourself the money-- go to your lbs, see what they use and ask them to order you one.
sp00ki is offline   Reply With Quote
Old 04-22-08, 08:19 AM   #10
Ziemas
Senior Member
 
Ziemas's Avatar
 
Join Date: Nov 2004
Location: Riga, Latvia
Bikes:
Posts: 10,082
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by sp00ki View Post
THAT PUMP IS GARBAGE.
return it immediately.
using it to get air into your tires involves finding a tiny sliver of a window between losing air while you're pumping, and losing air after you're done. finding it requires screwing the presta head just so, then screwing the schrader head to close the seal. undoing it to pull your valve out is a mess. not just that, but only ~35% of your stroke actually pushes air into the tube. Don't bother getting an exchange, it'll be the same issue.
THAT pump is a cheap knockoff of the original, which is (from what i've read) a spectacular tool. I'm inclined to believe that silca sold the rights to manufacture the pump to different standards.
Save yourself the money-- go to your lbs, see what they use and ask them to order you one.
Sounds like you have no idea how to use this pump. There is no schrader head involved, and it pumps up to 120psi very quickly.

Last edited by Ziemas; 04-22-08 at 09:48 AM.
Ziemas is offline   Reply With Quote
Old 04-22-08, 09:02 AM   #11
piwonka
park ranger
 
Join Date: Aug 2006
Location: mars
Bikes: recumbents
Posts: 1,794
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
haha. well said.
piwonka is offline   Reply With Quote
Old 04-22-08, 09:14 AM   #12
SeanBonham
Senior Member
 
SeanBonham's Avatar
 
Join Date: Jun 2005
Location: Louisville, Ky
Bikes: Surly Cross-Check, 1983 Specialized Stumpjumper
Posts: 486
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
I have this pump, it rules...
JUST PUSH DOWN - on the head and the pump
SeanBonham is offline   Reply With Quote
Old 04-22-08, 10:02 AM   #13
thiskidgotmoxie
Dazzler
 
thiskidgotmoxie's Avatar
 
Join Date: May 2006
Location: Worldwide
Bikes: All of them
Posts: 197
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
They're just a bit temperamental. You have to be a bit gentle when you push the head onto the valve, or you'll damage the rubber gasket people have already mentioned, which causes the leakage. I damaged the gasket on mine and just went to Freewheel to get a new one. It works perfectly now, pumps quickly and to a high psi.
thiskidgotmoxie is offline   Reply With Quote
Old 04-22-08, 12:57 PM   #14
sp00ki
partly metal, partly real
 
sp00ki's Avatar
 
Join Date: Aug 2005
Location: Philadelphia.
Bikes: Hummer H2
Posts: 3,597
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Ziemas View Post
Sounds like you have no idea how to use this pump. There is no schrader head involved, and it pumps up to 120psi very quickly.
once again, captain clueless to the rescue.
the silica pista is a schrader pump with an oversized pista adapter screwed onto the end. And no, it doesn't go to 120 easily. the original model does, but that's not what OP is discussing.
sp00ki is offline   Reply With Quote
Old 04-22-08, 01:16 PM   #15
Ziemas
Senior Member
 
Ziemas's Avatar
 
Join Date: Nov 2004
Location: Riga, Latvia
Bikes:
Posts: 10,082
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by sp00ki View Post
once again, captain clueless to the rescue.
the silica pista is a schrader pump with an oversized pista adapter screwed onto the end. And no, it doesn't go to 120 easily. the original model does, but that's not what OP is discussing.
Actually owning and using one daily once again I will stick by what I say. You simply are mistaken.

BTW, the personal attacks are not needed; there is enough BS already on BFSSFG.
Ziemas is offline   Reply With Quote
Old 04-22-08, 01:23 PM   #16
DARTHVADER
the darkness
 
DARTHVADER's Avatar
 
Join Date: Oct 2007
Bikes:
Posts: 391
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by sp00ki View Post
once again, captain clueless to the rescue.
the silica pista is a schrader pump with an oversized pista adapter screwed onto the end. And no, it doesn't go to 120 easily. the original model does, but that's not what OP is discussing.
i don't know. the silca pump i've used goes to 160psi easily...you're silica must be a cheap imitation or something. dumbass.

and what is this pista adapter and where can i buy one. will that make my road bike a track bike?

Last edited by DARTHVADER; 04-22-08 at 01:32 PM.
DARTHVADER is offline   Reply With Quote
Old 04-22-08, 02:28 PM   #17
sp00ki
partly metal, partly real
 
sp00ki's Avatar
 
Join Date: Aug 2005
Location: Philadelphia.
Bikes: Hummer H2
Posts: 3,597
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
sorry. silca/presta. i'd just gotten back from my lunchtime group ride.

bottom line is, i'm smarter than both of you. ergo, the pump is junk and you're mistaken and attempting to cover up for making a poor purchase.
sp00ki is offline   Reply With Quote
Old 04-22-08, 07:21 PM   #18
marqueemoon
or tarckeemoon, depending
 
marqueemoon's Avatar
 
Join Date: Dec 2005
Location: the pesto of cities
Bikes: Davidson Impulse, Merckx Titanium AX, Bruce Gordon Rock & Road, Cross Check custom build, On-One Il Pomino, Shawver Cycles cross, Zion 737, Mercian Vincitore, Brompton S1L, Charge Juicer
Posts: 7,020
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Can we stop with the personal attacks already?

The Pista model I have has a head that will do presta or schraeder. To set it up for schraeder to unscrew the top of the head. take out the plastic washer and the plastic piece inside, put the plastic washer back in first, them insert the plastic piece so the pin part is sticking out. If the OP has the version I have (doesn't look like it) and it's not set up correctly this could be causing the problem.

Otherwise it is either user error or there is something actually wrong with the pump. Since the OP hasn't chimed in since starting this thread we don't know anything more about the pump's age or general condition. For all we know it may not be new.
marqueemoon is offline   Reply With Quote
Old 04-22-08, 07:31 PM   #19
dayvan cowboy
Senior Member
Thread Starter
 
Join Date: Dec 2007
Location: Athens, Ohio
Bikes: Fuji Track, Half built 70s Azuki
Posts: 1,568
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Well, i'll admit a good part of the problem was the fact I had been smoking large amounts of marijuana when I tried using it the other day. The pump is new, but I had to replace head because the one that was on it was broken when it arrived. I think it was mostly my fault but it was more when I put the new head back on because I think the air is leaking from the point where the little clamp is holding the head on the hose.
dayvan cowboy is offline   Reply With Quote
Old 04-22-08, 07:35 PM   #20
marqueemoon
or tarckeemoon, depending
 
marqueemoon's Avatar
 
Join Date: Dec 2005
Location: the pesto of cities
Bikes: Davidson Impulse, Merckx Titanium AX, Bruce Gordon Rock & Road, Cross Check custom build, On-One Il Pomino, Shawver Cycles cross, Zion 737, Mercian Vincitore, Brompton S1L, Charge Juicer
Posts: 7,020
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by dayvan cowboy View Post
Well, i'll admit a good part of the problem was the fact I had been smoking large amounts of marijuana when I tried using it the other day. The pump is new, but I had to replace head because the one that was on it was broken when it arrived. I think it was mostly my fault but it was more when I put the new head back on because I think the air is leaking from the point where the little clamp is holding the head on the hose.
Sounds likely. Did you buy it locally or is there a local shop that might be able to check it out for you?
marqueemoon is offline   Reply With Quote
Old 04-22-08, 07:51 PM   #21
hockeyteeth
Senior Member
 
hockeyteeth's Avatar
 
Join Date: Sep 2006
Location: Gnv, FL
Bikes:
Posts: 1,890
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
My friend has a Super Pista and it works amazingly well. I had never heard of a Silca pump when I first used it and I was absolutely amazed by how smoothly and effortlessly it got my tires to full pressure.
hockeyteeth is offline   Reply With Quote
Old 04-22-08, 07:53 PM   #22
dayvan cowboy
Senior Member
Thread Starter
 
Join Date: Dec 2007
Location: Athens, Ohio
Bikes: Fuji Track, Half built 70s Azuki
Posts: 1,568
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I ordered it online(it was on sale). There are two fairly good bike shops(i've never been to the one but I am friends with one of their mechanics so they seem good) that i could probably take it to for help. Unfortunately i won't have free time to do something like that until this weekend.
dayvan cowboy is offline   Reply With Quote
Old 04-22-08, 08:05 PM   #23
delicious 
dork
 
delicious's Avatar
 
Join Date: Jun 2006
Location: berkeley
Bikes:
Posts: 1,563
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
i have one from the 70's that is pretty awesome. it's eddie merck orange and made of columbus tubing! ;-)
delicious is offline   Reply With Quote
Old 04-22-08, 11:43 PM   #24
Ziemas
Senior Member
 
Ziemas's Avatar
 
Join Date: Nov 2004
Location: Riga, Latvia
Bikes:
Posts: 10,082
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by dayvan cowboy View Post
Well, i'll admit a good part of the problem was the fact I had been smoking large amounts of marijuana when I tried using it the other day. The pump is new, but I had to replace head because the one that was on it was broken when it arrived. I think it was mostly my fault but it was more when I put the new head back on because I think the air is leaking from the point where the little clamp is holding the head on the hose.
Go to an auto parts or hardware store and buy a small hose clamp that closes with a screwdriver if you are having problems with the clamp you currently have. They are very cheap and effective.
Ziemas is offline   Reply With Quote
Old 04-22-08, 11:45 PM   #25
Ziemas
Senior Member
 
Ziemas's Avatar
 
Join Date: Nov 2004
Location: Riga, Latvia
Bikes:
Posts: 10,082
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by sp00ki View Post
sorry. silca/presta. i'd just gotten back from my lunchtime group ride.

bottom line is, i'm smarter than both of you. ergo, the pump is junk and you're mistaken and attempting to cover up for making a poor purchase.
I'm actually trying to help someone here, not stoke my ego. Please don't continue to bring the forums down any further.
Ziemas is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 04:00 AM.