Showing posts with label rear wheel. Show all posts
Showing posts with label rear wheel. Show all posts

Sunday, July 15, 2018

Waking Up An Old Soldier



Today's project was - revive an old soldier, a foot soldier to be precise. They go to sleep but they never die. This is the cycle on which I learnt to balance and ride about forty five or six years ago when I was about eight years old. Half pedal only though. I couldn't sit astride the saddle back then. I could hardly reach both the ends of the handle and instead would hold the saddle with my right hand. I cannot remember the countless miles of sheer joy this bike gave me when I would go to Shantiniketan. My uncle Popul who owned it rode it till he was past 80 and I think this bike is one of the reasons why he hardly ever had any disease. 

I had stopped Mezda from scrapping it and took it from him a few years ago when they closed down their establishment in Shantiniketan and sold off most of the stuff and brought back some unsellable things over. This was one of them. 

It was lying idle at home in Metro Park. Yesterday (a Saturday that was a holiday) when Kushuda brought our washing machine from home on a mini truck, I had requested him to bring the cycle over also, which he did. 

The adapter
My first priority (after dusting it, particularly the seat and handle grips) was to pump up the two wheels. I had to push it to the tyre repair shop to blow in some air. I had thought that these old style valves (they call it Woods or Dunlop valves) work like Schrader valves because all tyre repair shops use the same nozzle to fill these in as they do with cars. But I soon realised that it doesn't work like that. At least my 12 volt car tyre inflator didn't fit on it. I later learnt that you use the Presta to Schrader adapter on it and then you can use those 12 volt car tyre inflators. So these have the same thread as the Presta. It didn't strike me why the Presta nozzle of my pump wouldn't work. Will check that out later. (Later addition: I checked out. These Dunlop valves work perfectly with the pump in Presta filling mode). 

Anyway, I pushed the bike to the tyre repair shop next to Mudiali Meat Shop. They inflated the front wheel fine but said the rear tube is punctured. No air was going in. Again I pushed it back home. I thought I would take the wheel off and take it to a cycle repair shop to see what was wrong. I had no clue how it is done. I have never even seen any mechanic take these wheels off.

Someswar, my dial-in advisor for bike repair (he is a fantastic, properly trained and educated mechanic but lives quite far) told me how to take the wheel off. But he gave only half the advice. He said take the brake pads off and then take out the nuts on either end of the rear axle. The brake pads came off fine but taking the axle nuts off seemed like a near impossibility. The drive side nut was not as obstinate as the non-drive side one. This side had the added problem of the kick stand which was limiting the range of motion for the spanner to work. 
Anyway, I put in a lot of WD 40 on both the nuts and closed the project down for the day. I shall revisit the project another day.

The thin tube for valves
Later during the day I had a brainwave. Why was air not going in at all? I thought may be the valve-tube was damaged. Unscrewed it from the valve and checked it. I had sort of melted. I had some spare thin tube in my IceToolz repair kit. I used it to change the valve tube (our local mechanics use this term. I have no clue if it is correct.) I used the Presta to Schrader adapter and used the car tyre inflator. Nothing doing. Nothing went in.

I thought now that I have a way to inflate the tube at home let me try to repair it without removing the wheel. Prying the tyre out with a plastic tyre lever near the valve I realised the tube had almost melted. It was pointless trying to repair it. The tube has to be changed.

I tested the rear axle lock nuts. Today they had softened up it seemed and turned relatively easily. I was quietly ecstatic. Today is the day to learn this intimidating subject of taking the rear wheel off an old soldier.

I called Someswar up again. Hell bent on taking the tyre off. There is no youtube videos showing how to take off the rear wheel of an old style fixie with a mudguard and carrier rack. Someswar told me the rest of the story to really take off the wheel. I think yesterday he didn't take it too seriously and had given me a very superficial advice.

What I did is as follows. Step by step.

1. Turned the bike upside down.
Two chain tensioners and a bit of kickstand
2. Took off the two brake pads using spanner size
3. Took the lock nuts off from either side of the axle using spanner size 15
4. Took the kick-stand off, removed the stays for the mudguard and the carrier rack. The entire mudguard or carrier do not need to be taken off. They keep hanging from the bolts that attach them to the frame.
5. Take the chain tensioners off using spanner size (see pic)
6. Just pull the damn wheel out
7. Take photographs for viewing later and for showing off to friends who walk home after a puncture on the road
8. Forgot to mention - one has to take the chain off the free wheel at some point of time. In my case I didn't have to do anything as it was already off the gear.

Broken Park Tool tyre lever
Now, I tried to take off the old tyre - off the rim. Idea was to take it to a cycle repair shop and buy replacement tube and tyre (the tyre also looks brittle now) as per the size. I didn't realise how hard it is to take the tyre off from these old style bicycles. The beads are really deep. In the process I broke one of my Park Tools tyre levers :-( . The plastic tyre levers are fine for road bikes. For mountain bikes and these sort of older bikes one would need metallic levers. I have to order for them.

As of now the wheel is waiting to be taken to a shop and replaced. I shall put it in the boot of the car and see who can help. I would love to go to this store near Biplav's house in Golf Gardens. The guy is a gentleman there. I once asked for an old tube to cover my locking chain. He gave me one and refused to take any money for it.

Let me see how the reassembly goes. I am feeling a little intimidated. Far too many parts were taken off. They have to be reassembled one by one. Keeping my fingers crossed.


Like a beetle turned over

Sunday Night

I went to the cycle shop in Golf Gardens with the wheel. The shop owner was quietly impressed that I had taken the wheel off all by myself. He said he had the tyre and tube but it was behind a lot of stuff. It would be nice if I could come tomorrow. I didn't leave the wheel there because a. I would love to do the replacement myself. b. I want to come tomorrow on my motorcycle and taking the wheel back on my motorbike would be difficult. It will cost me Rs 310 (Rs 220 for tyre and 90 for tube). 

I also ordered for two steel tyre levers on Amazon for Rs 270 plus Rs 80 for delivery. Let me see when they arrive. I am not in any particular hurry. These can be used for my MTB Hero as well.

Sunday Afternoon (22nd July 2018)

Much as I would have loved to get the tyre and tube from the shop in Golf Gardens, ultimately I couldn't. I had called the shop up on Monday and they said the owner wasn't around and he is never around after 6.30 or so in the evening. I went to the shop on Saturday evening - at around 6.30 pm. He wasn't there. His old mother was at the cash counter. The assistants at the shop didn't seem too interested to understand what exactly I needed. And they started asking irrelevant questions. This is a hall mark of illiterates who know a little bit of something. I have dealt with many of them in the past.

The new tyre
The Tube
I muttered a quiet "fuck you" and came home. This shop is quite a distance from my house and I have no reason to go there except from a sense of gratitude. But beyond a point I cannot keep visiting it in search of an ordinary tyre and tube, especially when I have so many cycle shops closer to home. I also have a feeling that the owner probably goes for a drink every evening. Otherwise, it is not believable that he goes to the market every evening for buying supplies for the store. That's what the boys were trying to make me believe. The cycle market in Calcutta is in Bentinck Street and no one in his sane mind goes there in the evenings, leaving a busy shop. Anyway, enough is enough. I closed the chapter.

This afternoon I bought the tube and tyre from the shop in Kalighat called Bipul Cycle Stores.  Before that I had called up Someswar and he told me to check the tyre wall for the size. If it's too large then it's possibly 28x1.5. That was what was written, I found on the old tyre (on the tyre wall it's actually written one and a half and not 1.5. I believe when it comes to tyres there is a difference between the two though mathematically both are same). . So there was no more confusion and no need to take the old one to the shop.

Together they cost me Rs 355 at Bipul. The tyre is some brand called Varosa and the tube is Fargo. Obviously these are more expensive than quoted by Golf Gardens store (I think the shop name is Lokenath). They folded the tyre in a figure of 8 and it was quite handy for Mampu to hold it while sitting pillion on my motorbike. We came home. I have told them that if I cannot fit it to the rim I will come back with the rim and get it fitted by them. They assured me that they would stand by me :-) Now I am waiting for the steel tyre levers. Hopefully by next week they should be with me.
28 by one and a half - that's the size
Monday 23rd July, 2018

I finished a Herculean task this evening. Took the old tyre and tube off the rim. Put the new tyre and tube on. And then pumped it up. Believe it or not, it was a huge task and had to learn something new at every step of this process.

First taking the tyre off. Actually this I found was the most difficult part. I guess because it's an old tyre. Success came after I did two things. A. I loosened up the tyre sitting on the tube by pressing it all around and moving it a bit. B. I held the lever close to each other. Like 5/6 inches apart only. Even after half the tyre came out of the wheel and was hanging out of the rim it took me some time to actually take it off the rim.

Next was putting the tyre back on. I had thought this would be a lot more tough. In the end I managed to put it on. It took a lot of back  and forth pushing but I succeeded in getting the entire tire to sit on the rim properly. I had used some talcum on the new tube before putting it on. I inserted the tube in the tyre and then put the tyre on.

Next step was pumping the tyre up. This turned out to be the most challenging part. Air was just not going in. I would pump in and could hear the hiss of the air flowing back out.  I was quite at my wits end and was about to opt for "dial a mechanic" - my all time dependable Someswar Rao. I was using my good old Fire Fox floor standing pump in Schrader mode and added the Presta/Schrader adapter. It would just not work. Tried several different things including replacing the inner core with the old inner core of the old valve.

Dunlop Valve
Promptly returned with full refund
Finally a simple solution did the trick. If you look carefully at the
photograph of the valve (to the left) there is a small nut at the base of the valve. This sits on the rim. I tightened it against the rim with a spanner. Before that I was keeping it a bit loose, thinking I might need to take it out some time in future and it might get jammed. Turns out, this has to be really tight against the rim. Look at the raised edges of the base of the valve. That creates a space between the valve base and the rim. If you don't tighten the screw the pressure in the tube pushes the air out through the valve. These are very very old systems and have probably survived only in the Third World.

Earlier in the day, the tyre levers had arrived but much to my disappointment I found they were totally different from what was promised. Just a pair of cheap rusty screwdrivers. I did the job with them but am definitely going to return them. Learnt a lesson. Never buy anything that is not Amazon fulfilled.

Wednesday 25th July, 2018
Chain Tensioners

Although I didn't write about it, I fitted the tyre back to the bicycle on Monday night itself. However, I didn't quite like the fit. The chain is a bit lose. I should have pulled the wheel back a bit and adjusted the chain tensioner. That part of the bike is so old and jammed that the screw had to be tightened and loosened using a spanner. Somehow managed to put everything back on but as I said it didn't quite fit properly.

On Tuesday, I went to Bipul Cycles and bought a pair of chain tensioners. It cost me a royal sum of Rs 30 for the pair. On Amazon there is some joker who sells it for Rs 180 plus Rs 60 for courier. The guy at the shop told me an interesting thing. Keep the bulging side on the outside. The ring kind of thing that sits on top of the screw is not welded to the middle of the screw. It is on one side of the screw. That side should be on the interior part of the bike. The side that is bulging out should be on the exterior part. I don't know if this is clear to someone who has not seen the tensioner closely. Incidentally, in the shop I didn't ask them to give me a pair of chain tensioners. I was more than certain that they had some local name for it. So I showed it to them fitted on a cycle. They said it's called a "chain chabi". Chabi means key. Some call it chain adjuster also, he said.

Wednesday, May 23, 2018

Happy To Get A Puncture !!!



I was actually happy to discover a puncture in the rear wheel of my bike tonight. I accidentally realised it had gone flat while hanging on the stand. I was more than certain it was a flat. I couldn't be more glad by this opportunity to test my newly acquired skill of fixing punctures. After all we don't get punctures to repair every day. So off I went to fix it. I felt so alive to be doing this, when all my friends I know are watching cricket.

Incidentally, this is Wednesday. I had gone cycling on Saturday. Should I be worried about the quality of the OE tubes and replace both of them - front and rear? Probably yes, if I was going on a long tour. But since I stay more or less within the city and carry two tubes, there is no need to panic.

I started the work at 9:35 pm. Finished it at 10:25 without any particular hurry (meaning I could've done it faster). But please take about 15 minutes out of this. Because I had sent Monisha to Nishi to get some lime for marking. She in turn sent Nishi to get it from a paan shop because he had none. All this took some time. So to take the wheel off, tyre off, discover the puncture, repair it, put everything back on, it took me 35 minutes. The first time on road just to change the tube took me more than 40 minutes. Of course at home I was using the floor standing Firefox pump. 

I am still a little iffy with changing the rear tyre, particularly when it comes to putting it back on. I prefer putting the cycle upside down to do this. This time I tried to do it standing straight but failed. I guess once the trainer comes in and I get the training wheel, I will become more adept at it.

This time the puncture happened in a better location, away from the valve stem. I didn't commit the same mistakes of the first time. Marked the area with wet lime. Put the solution thin. Didn't peel off the plastic from top. Used a small patch. Put the tube back on right away and pumped the tyre. Let me see if it lasts. I didn't even test it. 

May 24, 2018

As of this morning, there is no perceptible air pressure loss.

May 27, 2018 

As of this morning also, there is no perceptible air pressure loss. I guess I have reached that stage where you can just repair the puncture and go. But I am still iffy with putting the back wheel on. I have to learn how to get the brake loose a bit. I think the brake pads are too close to the rim in the rear wheel. Need to widen the gap just a bit. I have no clue how that is done. Let me see. 

Sunday, October 22, 2017

Why You Should Learn To Take Off Your Wheels

One of the first things I taught myself after deciding to go on longish trips with my car out of town, was how to replace a wheel. Those were the pre-tubeless days. A flat meant an immediate halt and replacement of the wheel. How to change the wheel is a critical thing to know if you are travelling on your own. This knowledge has come in pretty handy for me on several occasions. It's my good luck that I have never had a flat while travelling long distances in India. But I know if needed I can do it. 

While changing the wheel of a car is relatively easy, changing the wheel of a bike is not. Different bikes use different techniques to fix the wheels. Taking them off was never easy when we were young. You needed wrenches. You needed to take this off and that off etc etc. But it wasn't so critically important for us because a. we were not travelling long distance on our cycles. b. the road side mechanic could get the flat fixed without taking the wheel off. 

However, modern bikes come with a very simple quick release system that makes the job of replacing the wheel like a piece of cake. My Merida has such a system and today, well after owning the bike for more than a year, I mustered up enough courage to take the two wheels off. 

While taking off and putting the front wheel back on was really a piece of cake, the rear wheel wasn't so easy, particularly putting it back on. Finally it happened. But I couldn't quite understand how exactly it happened. I guess I will have to do it several times more to be able to do it confidently. There is no rocket science involved here. 

Now comes the questions why I want to learn this. 

A. It is a cool thing to do/know. If someone did this in my childhood in front of me, I would have been very envious of him and would have wanted to do it and would have made my father's life miserable asking him to get me a cycle with quick release mechanism. 

B. It makes cleaning the bike very easy and you can do a thorough job of it if you can take the wheels off. Not only can you clean the wheels nicely, you can also clean the insides of the fork, brakes, chain stays, seat stays, derailleurs, cassettes etc. These places gather a lot of dirt and it is a good thing to give the bike a thorough shampoo after a dirty run. 

In fact today's decision to take off the wheel was prompted by this morning's ride over a wet patch of road near Science City. The bike's frame was literally plastered with dirt - essentially sand particles. Terrible to look at and would have surely spoilt the bike's paint if I allowed them to sit there for long. 

I had to see the various youtube videos several times to gather the confidence but in the end I did it. Youtube videos make everything look very simple. Real life is not always so simple, but except for putting the rear wheel back on, there is nothing that requires any special ability or knowledge or experience. Any ten year old can also do these. 

C. You can confidently go anywhere with your bike, a spare tube, a couple of levers to take out your tyre and a handy pump. That's it. You can easily fix a flat. I have all these except the pump. It's on my Amazon wish list though. 

Essentially you are not fixing the flat (even that can be done) but on the road you are replacing your tube really. You do that on the desolate section of your road and then the moment you see a tyre repair shop (they are everywhere), get the punctured tube fixed. To fix a punctured tube you need the additional help of some water and of course the patches. 

D. No knowledge goes unused in life. However, trivial it might be.

My next target is to learn how to take the tube out and put it back on. 

  

The First Non-Stop 50K

Today I achieved two cycling firsts. As the title suggests, I cycled non-stop to cover a distance of 50+ km. In terms of time, it took me 2:26 min to cover a little over 51 km. Sitting constant on the saddle for close to two and a half hours without a break is not easy. But surprisingly I don't feel any soreness on the ass. In fact I noticed this last Thursday (Kalipujo holiday) also when I felt the bum was remarkably pain free after the 35 km ride. The Sunday before that - which is just last Sunday - I felt the pain on the ass for two days.
Actually after that Sunday pain, I did a lot of stretches for the glutes. I guess that helped. It's a remarkable thing really to not feel any pain after non-stop two and a half hours of sitting on a saddle.  Coming back to the other cycling first - I took off the front wheel of my bike and surprise surprise - I put it back on as well (after washing it nicely in the bathroom) !!! While it took about ten seconds to do the first job, it took about 20 seconds to put it back on. I have never owned a cycle with clip on type wheels. This is the first time I did this. It's a nice feeling :-) Like finally doing something that you always wanted to do as a child but were afraid to try.
My next ambition is to take off the rear wheel, which is slightly more complicated because the chain and derailleur come into play there. But I will do it. I would have done it today itself but I have to go out to attend to a lunch invitation party for a colleague's son's annaprashan. 
Next on my "to do" list is taking the tube out and putting it back on. If I can do this I can confidently go for long road trips. I will need a portable pump for that though.
Now back to the morning's ride. I had meant to do this yesterday with Chenku. But due to really bad weather we couldn't go out. So I went out alone today to do what I had intended to do earlier. I think I started off at around 5.15 am. I got a little delayed waiting for the Garmin to get a fix on the satellites. It took an inordinately long time. In fact I turned it off and turned it on again. This trick often works. The Forerunner can be totally unpredictable when it comes to getting a fix on satellites. 



The route had a few bad sections and we learn from our mistakes. Like I will never take the short cut to Bijan Setu through Kakulia. That section is full of bumps. The section in front of Science City on the Park Circus connector had water logging. This made riding difficult as only the central part of the road was dry and the small pick up trucks drive at break neck speed there. Riding here made the bike and my back very dirty. This is the reason why I took off the wheel. I gave the bike a thorough wash,  with the pipe jet downstairs. But I did it without any shampoo. I will get a foam and some shampoo for this soon.

I felt a little hungry when I hit the VIP Road. This is after around 30 km, I think. I had started the morning with 4 biscuits. I think I was feeling a little extra hungry today. I didn't feel thirsty at all. Towards the end perhaps yes but then I had to prove that I could ride non-stop. So I didn't stop for any water break. Since I use a normal water bottle I need to stop to drink from it.

I guess I am now going to go for 100 km quite seriously. I will go step by step. Next Sunday will be 60, followed by 70 and then 80 etc. No point hastening things up and invite an unnecessary injury.

I also need to learn to ride with both the hands off. When I was in class XI I could ride for hours on end with the hands off. Even in the dark (on familiar roads, of course). But on this bike riding with hands off will take some time to learn. All I need to do is practice a bit. But I was afraid, it would slow down my average time. So I kept on pushing.

A major advantage of being able to ride hands free is that you can give your back a little rest. Let me see.

5 PM: Sunday, 22nd October 2017

After writing this far, I went to Sankhadeep's son's annaprashan. After coming back home at around 3 I did the rear wheel with some help from Monisha. Now taking the rear wheel off is easy but putting it back in wasn't so. The wheel has to be perfectly aligned between the brake pads. Then you have to engage it on the chain. But while doing it the wheel has to be held in such a position that the rest of the things fall in place perfectly.
That wasn't happening smoothly. After some struggle, suddenly things got engaged properly. I am not sure exactly what I did right but it happened. This means I will have to take the wheel off several times and truly master it. Because what happened today was more by fluke. I must know how it works.
Initially I tried with the cycle upright. Monisha was holding it. Then I turned it upside down with the cycle sitting on the saddle. Anyway, managed to clean the wheel nicely when it was off the bike.