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Old 8th February 2010, 14:28   #1
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Default 1988 model RX100 - Bringing back to Glory

As I have mentioned in the thread, I bought a 1989 model RX100 in my home town.

http://www.team-bhp.com/forum/motorb...d-pics-15.html (The Yamaha 'RX' Thread (with pics))

I could not upload the pics in that thread as I was not in town for last two months and I was not able to do
anything to the bike also.

Here are some pictures of the bike when I got the bike.

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Bike requires lot of work to bring back to it's glory.

I request all the members to provide help and pour your comments on the restoration.

I will be doing the restoration in my home town itself. My mechanic told me that the most of the spares are available there.
If not I will try to source it from Bangalore or some where else.

Wish me luck guys
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Old 9th February 2010, 10:04   #2
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Hi Friends,

I have few doubts.

The engine in my bike is stock, no reboring or replacement done as far as I know.
How to check is any replacement done on the engine parts?

The original electricals are 6V and I heared that the wiring set for RX100 is not available. I want to upgrade to 12V electricals. What is the best way to do? Should I buy a 135 wiring kit and a new battery.

What's your suggestions?
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Old 9th February 2010, 11:38   #3
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Welcome to the club of restoring Rx100 my friend. Except the cylinder, you'll get most of the parts. Do a compression test to check your cylinder & stay along with mechs when they do the compression test. I suggest you to befriend with some Yamaha A.S.S & then get this done than doing it at any local garage.

Yes, pls change the electricals to 12V & Rx135's wiring kit will suffice. And oh!!! you need to change the magneto coil wiring harness you'll not be able to get this one too. I mean, you'll be able to get it from the grey market but not from any distributor or through Yamaha A.S.S with the bill & yes go in for a new battery.

How about your speedo meter assembly? Do you like the stock looks or the Rx135's? Try to change that one too. Also the plate that holds the ignition, turn lights & meter assembly seems to be bent, replace that one too. If you're happy with Samurai's doom, keep it or else go for new stock Rx100 doom.

If you like TBTS RVM's go for it, it would give your bike a good classy look, if not retain the current mirrors & put the mirrors on both sides

Last edited by aargee : 9th February 2010 at 11:39.
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Old 9th February 2010, 20:21   #4
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Quote:
Originally Posted by aargee View Post
Welcome to the club of restoring Rx100 my friend. Except the cylinder, you'll get most of the parts. Do a compression test to check your cylinder & stay along with mechs when they do the compression test. I suggest you to befriend with some Yamaha A.S.S & then get this done than doing it at any local garage.

Yes, pls change the electricals to 12V & Rx135's wiring kit will suffice. And oh!!! you need to change the magneto coil wiring harness you'll not be able to get this one too. I mean, you'll be able to get it from the grey market but not from any distributor or through Yamaha A.S.S with the bill & yes go in for a new battery.

How about your speedo meter assembly? Do you like the stock looks or the Rx135's? Try to change that one too. Also the plate that holds the ignition, turn lights & meter assembly seems to be bent, replace that one too. If you're happy with Samurai's doom, keep it or else go for new stock Rx100 doom.

If you like TBTS RVM's go for it, it would give your bike a good classy look, if not retain the current mirrors & put the mirrors on both sides
Thanks friend. I will tell mechanic to perform the compression test when I go next time to my hometown. i do not have any plans to touch the engine now as I feel it is running good. I will use the bike for some time and get a hang of it and put a detailed plan for the things to do.

When I change to 12V, do I need to R.R unit and flasher ? Any idea about how much I have to spend to change magneto coil wiring harness ?

About speedometer, I would like to keep stock look of RX100. I am planning to change the entire assembly with the plate and all as the current one is little broken. Same case with doom. Mirrors, I am planning to keep the current one.

Any idea how much the stock speedometer assembly?
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Old 9th February 2010, 21:13   #5
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Rahul,

An year back when I converted my brother's RX100 to 12V, I spent almost 1.2K.

Also, the price of the speedometer an year back was approx. 600 bucks. I'm saying the time period since prices of most of the spares have shot up.

If you want I can scan you the price list of spares I bought in the last 3 years.

Can you tell me how much did you pay for this bike? The bike looks like Kottayam reg. Right?

I would advise you not to spent anything on the cosmetic parts but work on the mechanicals, electricals and tires. Since this is an new old bike, it's better to open the engine. Because once you start using it, chances are likely that issues can crop up from the engine and mechanicals.

Thanks,
Jose.
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Old 9th February 2010, 21:23   #6
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Well, I'm not sure on RR unit & flasher, but rectifier, yes, you need to change, however, I'll find that info for you.

Magneto coil - frankly I don't know as I'm unable to get these parts & I'm not sure how long this is going to take. Wiring harness, well, not sure though, I think I got it somewhere for 250 about 6-8 months ago. But again, that was not OE for Rx135.

The speedo bracket, again I don't know how much, can confirm it to you on Thursday when I get buy them, have just ordered one today
Stock speedo assembly MRP is 472, depends how much they could charge you.

Turn lights costs about 70 bucks each, make is Minda, you'll get it without Yamaha hologram but original Minda, again, you may not be able to get to buy only the plastic chromes. Hope you got what I mean.

Ignition, petrol cap lock, side lock & additional lock on the frame - all put together will cost about 470 & you'll not get the key as what you've now, now Minda makes it with plastic cover like the attached pic.



Let me know if you need any other info.

Quote:
Originally Posted by josejoseph View Post
An year back when I converted my brother's RX100 to 12V, I spent almost 1.2K.
IMHO, its worth spending, if you love the bike & plan to keep it for some more time.

Quote:
Originally Posted by josejoseph View Post
Also, the price of the speedometer an year back was approx. 600 bucks. I'm saying the time period since prices of most of the spares have shot up.
Yes, the prices have gone about 2.5 times. However the current MRP on OE speedometer is 472.25 manufactured by Pricol. This is the price as of Jan 2010.

Quote:
Originally Posted by josejoseph View Post
If you want I can scan you the price list of spares I bought in the last 3 years.
Yes, please; appreciate your help.

Quote:
Originally Posted by josejoseph View Post
Since this is an new old bike, it's better to open the engine. Because once you start using it, chances are likely that issues can crop up from the engine and mechanicals.
Beg to differ here. IMHO, if the compression is good, then, half your headache is over. Only if there's a considerable difference in the compression, then open up the engine. If you're looking for the next size which is .25, then, trust me you're going to have tough time finding the OE (Goetze). There're plenty of standard available off the shelves, however, most oversize are found only for Rx135 now.

Regarding the barel - Never even think of it as people all over India are waiting since Oct 2009, so be happy if your compression test is good.

My sincere request to you is - Never, never touch the cylinder unless & until it is absolutely required.
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Last edited by Dippy : 10th February 2010 at 10:47. Reason: Back to back posts
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Old 10th February 2010, 11:54   #7
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Quote:
Originally Posted by josejoseph View Post
Rahul,

An year back when I converted my brother's RX100 to 12V, I spent almost 1.2K.
I already bought the new wiring kit (non OEM) and a 12V battery. I have to get the rest of the required items for converting to 12V.

@Jose: Let me know what are all the spares changed for this if you remember.

Quote:
Originally Posted by josejoseph View Post
Also, the price of the speedometer an year back was approx. 600 bucks. I'm saying the time period since prices of most of the spares have shot up.
For Speedometer, the price you mentioned is the entire assembly includes the left lurn light, neutral light and highbeam on the left side and the key hole and right turn light on the right and the cnter speedo?

or just the center speedo console?

Quote:
Originally Posted by josejoseph View Post
If you want I can scan you the price list of spares I bought in the last 3 years.
It would be a great help and also we can compare the prices of the spares now

Quote:
Originally Posted by josejoseph View Post
Can you tell me how much did you pay for this bike? The bike looks like Kottayam reg. Right?
I have paid 10K for the bike. Only I have to pay the tax comes around 1100 INR, all other documents are perfect.

Quote:
Originally Posted by josejoseph View Post
I would advise you not to spent anything on the cosmetic parts but work on the mechanicals, electricals and tires. Since this is an new old bike, it's better to open the engine. Because once you start using it, chances are likely that issues can crop up from the engine and mechanicals.

Thanks,
Jose.
I will sort out out all the mechanical and electrical issues now. About opening the engine, as aargee told I will check the compression and if there is some problem then only I will open the engine.



Quote:
Originally Posted by aargee View Post
Well, I'm not sure on RR unit & flasher, but rectifier, yes, you need to change, however, I'll find that info for you.
That wuold be very helpful.

Quote:
Originally Posted by aargee View Post
The speedo bracket, again I don't know how much, can confirm it to you on Thursday when I get buy them, have just ordered one today
Stock speedo assembly MRP is 472, depends how much they could charge you.
Let me know the price once you buy them. Any way I am going search here in Bangalore as the speedo console is not available in mu hometown.

Quote:
Originally Posted by aargee View Post
Turn lights costs about 70 bucks each, make is Minda, you'll get it without Yamaha hologram but original Minda, again, you may not be able to get to buy only the plastic chromes. Hope you got what I mean.

Ignition, petrol cap lock, side lock & additional lock on the frame - all put together will cost about 470 & you'll not get the key as what you've now, now Minda makes it with plastic cover like the attached pic.

Let me know if you need any other info.
I got what you mean. I already bought the new set of lock & keys. Have to confirm the price. I will put the pictures of the key's this week end.

Thanks a lot for your help guys.
Hope my bike will come out good.
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Old 11th February 2010, 19:33   #8
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Rahul, here are my answers to your queries.

To convert to 12v I bought RR unit (525 bucks), Flasher Relay (109 bucks), and wiring harness (300 bucks), fuse unit (25 bucks).

The price I mentioned for the speedometer is only for the center unit. The other parts called the left and right pilot lamp assembly is around 100 bucks per unit.

I'm sorry for making the statement to scan the price lists I have with me. The list is too long . Please let me know the unit and I'll let you know the price.

10K for the bike is too good (compared with the price in Cochin). An year ago, I bought a '90 model RX100 for 14K which was just in running condition.

Regarding opening the engine, well, I'm not an expert. I just spoke from my personal experience . When you check the mechanicals, do check the oil pump as well.

Thanks,
Jose.
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Old 12th February 2010, 03:08   #9
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for a sucess full conversion from 6 V to 12 V you have to get a new magnet, Coils, RR unit and every thing else.

we have converted two of them in the same manner costs around 3 K

reason being is that if you change just the RR unit and the battery what difference would it make if the coil is not giving out enough charge.

i may be wrong if some one can correct me here
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Old 12th February 2010, 12:36   #10
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@ josejoseph, have you measured it delivering 12 volt?
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Old 13th February 2010, 11:44   #11
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Quote:
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@ josejoseph, have you measured it delivering 12 volt?
Nope . How do I check it?
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Old 13th February 2010, 18:02   #12
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Quote:
Originally Posted by desideep View Post
for a sucess full conversion from 6 V to 12 V you have to get a new magnet, Coils, RR unit and every thing else.

we have converted two of them in the same manner costs around 3 K

reason being is that if you change just the RR unit and the battery what difference would it make if the coil is not giving out enough charge.

i may be wrong if some one can correct me here
you are right dd.you need to source the magnet drum,stator plate with coils and idealy a 5 spped harness,handle bar switch and RR for a clean work i.e, without cutting and taping etc...

Quote:
Originally Posted by josejoseph View Post
Nope . How do I check it?
get a multimeter,disconnect battery and check at the +ve wire coming from the RR at say 3000 rpm (tighten the idle screw on the carb to set 3000 rpm) with lights on. the meter should show at least 13-13.5 volt. by just replacing the RR on a 6volt system you may get it, but only at high rpm.s. that is the problem.

Last edited by georgev : 13th February 2010 at 18:04.
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Old 16th February 2010, 12:32   #13
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Quote:
Originally Posted by josejoseph View Post
Rahul, here are my answers to your queries.

To convert to 12v I bought RR unit (525 bucks), Flasher Relay (109 bucks), and wiring harness (300 bucks), fuse unit (25 bucks).

The price I mentioned for the speedometer is only for the center unit. The other parts called the left and right pilot lamp assembly is around 100 bucks per unit.

I'm sorry for making the statement to scan the price lists I have with me. The list is too long . Please let me know the unit and I'll let you know the price.

10K for the bike is too good (compared with the price in Cochin). An year ago, I bought a '90 model RX100 for 14K which was just in running condition.

Regarding opening the engine, well, I'm not an expert. I just spoke from my personal experience . When you check the mechanicals, do check the oil pump as well.

Thanks,
Jose.
Thanks a lot for the inputs. I have managed to source the parts and converted to 12V and installed a new battery as well.

Quote:
Originally Posted by desideep View Post
for a sucess full conversion from 6 V to 12 V you have to get a new magnet, Coils, RR unit and every thing else.

we have converted two of them in the same manner costs around 3 K

reason being is that if you change just the RR unit and the battery what difference would it make if the coil is not giving out enough charge.

i may be wrong if some one can correct me here
Thanks for the details.

One more query: I have repaint the entire bike chasis (Got some rust) and other parts. Planning to rub entire paint and paint again. Also planning to do minor plating works on the kick lever, silenser etc. Also wanted to paint the engine. Any idea how much it will cost me. Painter in my town quoted 2.5k - 3K for this job.

Please provide your suggestions.

I have some more pictures of the bike. I will post it when I got to home.
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Old 16th February 2010, 13:19   #14
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Quote:
Originally Posted by rahul20_6 View Post
One more query: I have repaint the entire bike chasis (Got some rust) and other parts. Planning to rub entire paint and paint again. Also planning to do minor plating works on the kick lever, silenser etc. Also wanted to paint the engine. Any idea how much it will cost me. Painter in my town quoted 2.5k - 3K for this job.
Get a new frame & mount the bike; you can source a new frame for about 4.5K
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Old 16th February 2010, 14:10   #15
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Quote:
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Get a new frame & mount the bike; you can source a new frame for about 4.5K
Is it really required to change the frame. The frame seems ok to me eventhough there is some rust on the frame ?

One more update is that I was wrong with the model of the bike. Actually it is a 1988 model Escorts RX 100.

I request the mod's to change the title as "1988 Escorts RX100 - Bringing back to Glory"

Is there any other way to request the title change ?
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