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Old 14th June 2015, 15:45   #2626
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Thanks Fintail! I checked the tyre specifcations, it says 26 X 1.6. Will that be a problem for the 26X2 wheels of rockrider 5.1?
Nope; to the best of my knowledge.
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Old 14th June 2015, 22:27   #2627
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Im looking to a get a 29er for myself, which one should I buy ? Budget is max 50k, lower the better! Have checked out Firefox, Trek, Giant, Merida, etc. so far. Was keen on Btwin 29er, but they stopped importing the bike. So which one should I opt for ? My height is 6 ft. so please suggest the right frame size also..
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Old 15th June 2015, 11:22   #2628
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Thanks Fintail! I checked the tyre specifcations, it says 26 X 1.6. Will that be a problem for the 26X2 wheels of rockrider 5.1?
Depends on your rims. Specifically the inner diameter between the bead seats of your rims. There is a bit of leeway on either side (thinner and fatter).

Sheldon brown has chart which gives you the possible tyre widths that can fit onto rims of different rim inner widths.

But in general, most 26 inch MTBs will take a 1.6 comfortably. Maybe even a 1.5. Translating to 44 and 40 mm respectively.
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Old 15th June 2015, 11:37   #2629
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After my Poona – Bombay ride two months back, cycle was lying idle. As monsoon is on doors and weather is somewhat pleasant now. I resumed cycling 3 days back. Did around 30 kms yesterday. Time to build stamina and do Poona – Gateway of India ride (one of my dream ride during monsoon) in next 2 months.
There was ‘blessing in a disguise’ incident happened last evening, I was looking for cycle shops to top up air (My Montra Blues have a different air valve) and one over enthu cycle shop owner drained air from front tyre and I had to walk with cycle for 1-2 kms and I found a crowded cycle shop in a bye-lanes of PCMC. After getting air field, I asked one mechanic of my pedal noise and top gear engaging issue (I did half Poona-Bombay trip on one gear less of top gears) and within few minutes he did both.
And to top it up, I paid INR 10/- for the same. I am happy for now !!!
I need help from Puneri cyclists, where can I find that adaptor which I need to put on existing tyre valves for air filling. It’s a pain to get air top up as no one in my area has that adaptor and I do take my cycle out to highways and fringe areas of Poona.

Regards,
Shubhendra Singh
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Old 15th June 2015, 12:39   #2630
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Default Re: The Bicycles thread

Shubhendra

I had a similar issue with my Montra. Checked with Surinder Cycles and they suggested getting the tube changed to one having a normal valve. This ensured, I can get air filled at any of the road side shops


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Old 15th June 2015, 12:57   #2631
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I need help from Puneri cyclists, where can I find that adaptor which I need to put on existing tyre valves for air filling.
I assume you're talking about the Presta-to-Schrader valve adapter. You can get it in any of the many bicycle shops located around Phadke Houd Chowk in Pune. It should cost a mere 10/20 bucks. I got one for myself and it works just fine.
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Old 15th June 2015, 13:01   #2632
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I assume you're talking about the Presta-to-Schrader valve adapter. You can get it in any of the many bicycle shops located around Phadke Houd Chowk in Pune. It should cost a mere 10/20 bucks. I got one for myself and it works just fine.
Is there one where I can get air filled into my tyres from the digital machines at tyre shops and at petrol pumps?

P.S. I have the normal Indian cycle type valves. Not those ultra long ones of imported bikes.
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Old 15th June 2015, 13:54   #2633
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Is there one where I can get air filled into my tyres from the digital machines at tyre shops and at petrol pumps?

P.S. I have the normal Indian cycle type valves. Not those ultra long ones of imported bikes.
By normal Indian cycle type valves, do you mean the ones where you rotate a ring to let the air off? If so, I'm not sure if a Schrader adapter is available for that. Will have to check.

My bicycle (Montra) tubes have Presta valves (may be the ones you're referring to as ultra long ones). The adapter makes it fit for the motorcycle-tube-style pumps (which cater to Schrader valves).

I've got an al-cheapo cycle pump with two holes; one for Schrader and the other for classic valve (where you rotate a ring to let the air off). I use this adapter on the Montra along with the Schrader hole.
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Old 15th June 2015, 14:05   #2634
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Originally Posted by RishikeshK View Post
By normal Indian cycle type valves, do you mean the ones where you rotate a ring to let the air off? If so, I'm not sure if a Schrader adapter is available for that. Will have to check.

My bicycle (Montra) tubes have Presta valves (may be the ones you're referring to as ultra long ones). The adapter makes it fit for the motorcycle-tube-style pumps (which cater to Schrader valves).

I've got an al-cheapo cycle pump with two holes; one for Schrader and the other for classic valve (where you rotate a ring to let the air off). I use this adapter on the Montra along with the Schrader hole.
This type .....

The Bicycles thread-201505310005.jpeg
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Old 15th June 2015, 14:23   #2635
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Default Re: The Bicycles thread

From the photo, it looks like the rotate-a-ring-to-let-the-air-off type valve. Recent Google search revealed that it is called Dunlop valve or Woods valve. I haven't checked personally but am sure you'll get a Dunlop-to-Schrader adapter in Phadke Houd Chowk shops.
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Old 15th June 2015, 15:37   #2636
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Default Re: The Bicycles thread

Yup, that's the name.

So Schrader is the car/bike air pump filling type valve right?

Asking for two reasons. Right now I have the old type pump at home which I use on all our cycles. And check pressure with hand. Because the tyre sidewall just has "inflate hard" written.

But there are tyres which have the exact pressure written (in psi and bar) so if I shift to them would like to know exactly how much I'm filling and not to over-inflate. The latter is always a fear when filling by "feel" that you will burst your tube or valve.
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Old 15th June 2015, 16:19   #2637
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Default Re: The Bicycles thread

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Originally Posted by ebonho View Post
Yup, that's the name.

So Schrader is the car/bike air pump filling type valve right?

Asking for two reasons. Right now I have the old type pump at home which I use on all our cycles. And check pressure with hand. Because the tyre sidewall just has "inflate hard" written.

But there are tyres which have the exact pressure written (in psi and bar) so if I shift to them would like to know exactly how much I'm filling and not to over-inflate. The latter is always a fear when filling by "feel" that you will burst your tube or valve.
Doc, go for foot pumps with integrated pressure gauge. They cost around Rs.500/- and they come along with an adapter to suit your bicycles valves. You can use them on your car and motorcycle as well.

edit : The only drawback when using in old type bicycles valves is that the gauge will show correct reading momentarily when the rubber valve tube opens. And one more thing - the neck of the valve in your bicycle is misaligned. You will have to tighten the lower ring.
regards Arun

Last edited by adrian : 15th June 2015 at 16:26.
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Old 15th June 2015, 16:38   #2638
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And one more thing - the neck of the valve in your bicycle is misaligned. You will have to tighten the lower ring.
regards Arun
Yup, thanks Arun. Been riding it like that for some time now. The lower ring is fully tightened against the rim.

I'll have to get the tyre deflated and the tube repositioned by removing the tyre bead from one side because I tried doing it by removing all the air and pushing the valve into the tyre after loosening the check ring but its not happening.

P.S. Discovered a totally new kind on slow puncture last week. My front tyre was losing air very slowly (I could feel, even hear, it becoming softer on the ride) and would become completely soft over about 2 days.

Finally the puncture was traced to the metal valve housing that is fixed (bolted) to the tube. The actual metal tube was leaking tiny air froth/bubbles from a micrometer split in the casing body (not the joint). First time I've come across this type of puncture.

Last edited by ebonho : 15th June 2015 at 16:41.
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Old 16th June 2015, 15:09   #2639
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+1 to Adrian for foot pumps with pressure gauge for filling up to an exact pressure value. That got me thinking. I may get one for myself if it has all the required adapters!
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Old 16th June 2015, 16:12   #2640
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Originally Posted by RishikeshK View Post
+1 to Adrian for foot pumps with pressure gauge for filling up to an exact pressure value. That got me thinking. I may get one for myself if it has all the required adapters!
I read somewhere that inherent to their design, foot pumps cannot effectively fill to or beyond pressures above 50-60 PSI. Not a roblem for cars or bikes, but some cycle tyres (especially the thinner they get) need quite a bit more.
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